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Diffstat (limited to 'metapost/context/base/mpiv')
29 files changed, 15144 insertions, 0 deletions
diff --git a/metapost/context/base/mpiv/metafun.mpiv b/metapost/context/base/mpiv/metafun.mpiv new file mode 100644 index 000000000..b1d4f32e7 --- /dev/null +++ b/metapost/context/base/mpiv/metafun.mpiv @@ -0,0 +1,58 @@ +%D \module +%D [ file=metafun.mp, +%D version=2000.07.15, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=format generation file, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA / Hans Hagen \& Ton Otten}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +%D First we input John Hobby's metapost plain file. However, because we want to +%D prevent dependency problems and in the end even may use a patched version, +%D we prefer to use a copy. + +prologues := 0 ; +mpprocset := 1 ; + +input "mp-base.mpiv" ; +input "mp-tool.mpiv" ; +input "mp-mlib.mpiv" ; +% "mp-core.mpiv" ; % todo: namespace and cleanup +input "mp-luas.mpiv" ; % experimental +input "mp-page.mpiv" ; % todo: namespace and cleanup +input "mp-butt.mpiv" ; % todo: namespace and cleanup +input "mp-shap.mpiv" ; % will be improved +input "mp-grph.mpiv" ; % todo: namespace and cleanup +input "mp-grid.mpiv" ; % todo: namespace and cleanup +input "mp-form.mpiv" ; % under (re)construction +input "mp-figs.mpiv" ; % obsolete, needs checking +input "mp-func.mpiv" ; % under construction +% "mp-text.mpiv" ; % loaded on demand +% "mp-char.mpiv" ; % loaded on demand +% "mp-step.mpiv" ; % loaded on demand +% "mp-chem.mpiv" ; % loaded on demand + +string metafunversion ; metafunversion = + "metafun iv" & " " & + decimal year & "-" & + decimal month & "-" & + decimal day & " " & + if ((time div 60) < 10) : "0" & fi + decimal (time div 60) & ":" & + if ((time-(time div 60)*60) < 10) : "0" & fi + decimal (time-(time div 60)*60) ; + +let normalend = end ; + +if known mplib : + def end = ; message "" ; message metafunversion ; message "" ; endinput ; enddef ; + def bye = ; message "" ; message metafunversion ; message "" ; endinput ; enddef ; +else : + def end = ; message "" ; message metafunversion ; message "" ; normalend ; enddef ; +fi ; + +% dump ; % obsolete in mplib diff --git a/metapost/context/base/mpiv/mp-abck.mpiv b/metapost/context/base/mpiv/mp-abck.mpiv new file mode 100644 index 000000000..abd7d8848 --- /dev/null +++ b/metapost/context/base/mpiv/mp-abck.mpiv @@ -0,0 +1,269 @@ +%D \module +%D [ file=mp-abck.mpiv, +%D version=2012.02.19, % was mp-core: 1999.08.01, anchoring +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=anchored background macros, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +if known context_abck : endinput ; fi ; + +boolean context_abck ; context_abck := true ; + +path multiregs[], % region used for multipar (tracing only) + multipars[], % effective area (shape) + multibox ; % main boundingbox (of main region) + +string multikind[] ; % region state: single | first | middle | last (new method) + +numeric multilocs[], % 1=begin 2=between 3=end (old method) + nofmultipars ; % number of calculated areas + +numeric par_strut_height, + par_strut_depth, + par_line_height ; + +nofmultipars := 0 ; +par_strut_height := 0 ; +par_strut_depth := 0 ; +par_line_height := 0 ; + +def boxgridoptions = withcolor .8red enddef ; +def boxlineoptions = withcolor .8blue enddef ; +def boxfilloptions = withcolor .8white enddef ; + +numeric boxgridtype ; boxgridtype := 0 ; +numeric boxlinetype ; boxlinetype := 1 ; +numeric boxfilltype ; boxfilltype := 1 ; +numeric boxdashtype ; boxdashtype := 0 ; +pair boxgriddirection ; boxgriddirection := up ; +numeric boxgridwidth ; boxgridwidth := 1pt ; +numeric boxlinewidth ; boxlinewidth := 1pt ; +numeric boxlineradius ; boxlineradius := 0 ; +numeric boxlineoffset ; boxlineoffset := 0 ; +numeric boxfilloffset ; boxfilloffset := 0 ; +numeric boxgriddistance ; boxgriddistance := .5cm ; +numeric boxgridshift ; boxgridshift := 0 ; + +def abck_show_path(expr p, r, c) = + draw p withpen pencircle scaled .5pt withcolor c ; + if length(p) > 2 : + begingroup ; save _c_ ; path _c_ ; _c_ := fullcircle scaled r ; + for i=0 upto length(p) if cycle p : -1 fi : + fill _c_ shifted point i of p withcolor white ; + draw _c_ shifted point i of p withpen pencircle scaled .5pt withcolor c ; + endfor ; + fi ; +enddef ; + +vardef abck_draw_path(expr p) = + if (length p > 2) and (bbwidth(p) > 1) and (bbheight(p) > 1) : + save pp ; path pp ; + pp := p if (boxlineradius>0) and (boxlinetype=2) : cornered boxlineradius fi ; + if boxfilltype > 0 : + if boxfilloffset > 0 : + interim linejoin := mitered ; + filldraw pp boxfilloptions withpen pencircle scaled (2*boxfilloffset) ; + else : + fill pp boxfilloptions ; + fi ; + fi ; + if boxlinetype > 0 : + draw pp boxlineoptions withpen pencircle scaled boxlinewidth ; + fi ; + fi ; +enddef ; + +def abck_grid_line(expr start, width) = + % 1 = normal, 2 = with background (i.e. no shine-through) + if boxdashtype = 2 : + draw start -- start shifted (width,0) + withpen pencircle scaled boxgridwidth + boxfilloptions ; + fi ; + draw start -- start shifted (width,0) + if boxdashtype > 0 : + dashed evenly + fi + withpen pencircle scaled boxgridwidth + boxgridoptions ; +enddef ; + +vardef abck_baseline_grid(expr pxy, pdir, at_baseline) = + save width ; width := bbwidth(pxy) ; + save height ; height := bbheight(pxy) ; + if (par_line_height > 0) and (height > 1) and (width > 1) and (boxgridwidth > 0) : + save i, grid, bb ; picture grid ; pair start ; path bb ; + grid := image ( % fails with inlinespace + if pdir = up : + for i = if at_baseline : par_strut_depth else : 0 fi step par_line_height until max(height,par_line_height) : + abck_grid_line(llcorner pxy shifted (0,+i),width) ; + endfor ; + else : + for i = if at_baseline : par_strut_height else : 0 fi step par_line_height until height : + abck_grid_line(ulcorner pxy shifted (0,-i),width) ; + endfor ; + fi ; + ) ; + clip grid to pxy ; + bb := boundingbox grid ; + grid := grid shifted (0,boxgridshift) ; + setbounds grid to bb ; + grid + else : + nullpicture + fi +enddef ; + +vardef abck_graphic_grid(expr pxy, dx, dy, x, y) = + if (bbheight(pxy) > dy) and (bbwidth(pxy) > dx) and (boxgridwidth > 0) : + save grid ; picture grid ; + grid := image ( + for i = xpart llcorner pxy step dx until xpart lrcorner pxy : + draw (i,ypart llcorner pxy) -- (i,ypart ulcorner pxy) withpen pencircle scaled boxgridwidth ; + endfor ; + for i = ypart llcorner pxy step dy until ypart ulcorner pxy : + draw (xpart llcorner pxy,i) -- (xpart lrcorner pxy,i) withpen pencircle scaled boxgridwidth ; + endfor + ) shifted (x,y) ; + clip grid to pxy ; + grid + else : + nullpicture + fi +enddef ; + +def draw_multi_pars = + for i=1 upto nofmultipars : + abck_draw_path(multipars[i]) ; + if boxgridtype = 1 : + draw abck_baseline_grid(multipars[i],if multilocs[i]=1: down else: up fi,true) ; + elseif boxgridtype = 2 : + draw abck_baseline_grid(multipars[i],if multilocs[i]=1: down else: up fi,false) ; + elseif boxgridtype = 3 : + draw abck_baseline_grid(multipars[i],if multilocs[i]=1: down else: up fi,true) ; + draw abck_baseline_grid(multipars[i],if multilocs[i]=1: down else: up fi,true) shifted (0,ExHeight) ; + elseif boxgridtype = 4 : + draw abck_baseline_grid(multipars[i],if multilocs[i]=1: down else: up fi,true) shifted (0,ExHeight/2) ; + elseif boxgridtype = 11 : + draw abck_graphic_grid(multipars[i],boxgriddistance,boxgriddistance,boxgriddistance/2,boxgriddistance/2) ; + elseif boxgridtype = 12 : + draw abck_graphic_grid(multipars[i],boxgriddistance,boxgriddistance,0,0) ; + fi ; + endfor ; +enddef ; + +def show_multi_pars = + for i=1 upto nofmultipars : + abck_show_path(multipars[i], 6pt, .5blue) ; + endfor ; +enddef ; + +def show_multi_kind = + for i=1 upto nofmultipars : + fill multipars[i] + withcolor + if multikind[i] = "single" : yellow + elseif multikind[i] = "first" : red + elseif multikind[i] = "middle" : green + elseif multikind[i] = "last" : blue + fi + withtransparency (1,.5) + ; + endfor ; +enddef ; + +def multi_side_draw_options = enddef ; + +def draw_multi_side = + begingroup ; save p ; picture p ; + for i=1 upto nofmultipars : + p := image ( fill leftboundary multipars[i] + shifted (-boxlineoffset,0) + rightenlarged boxlinewidth boxlineoptions ; + ) ; + setbounds p to multipars[i] ; + draw p ; + endfor ; + endgroup ; +enddef ; + +def draw_multi_side_path text t = + begingroup ; save p ; picture p ; + for i=1 upto nofmultipars : + p := image ( draw leftboundary multipars[i] + shifted (-boxlineoffset,0) + withpen pensquare scaled boxlinewidth boxlineoptions t ; + ) ; + setbounds p to multipars[i] ; + draw p ; + endfor ; + endgroup ; +enddef ; + +% some extras + +path posboxes[], + posregions[] ; + +numeric multipages[], + nofposboxes ; + +nofposboxes := 0 ; + +% For the moment we keep these as they can be in use but they will +% disappear. + +pair lxy[], rxy[], cxy[], llxy[], lrxy[], ulxy[], urxy[] ; +path pxy[] ; +numeric hxy[], wxy[], dxy[], nxy[] ; + +def box_found (expr n,x,y,w,h,d) = + not ((x=0) and (y=0) and (w=0) and (h=0) and (d=0)) +enddef ; + +def initialize_box_pos (expr pos,n,x,y,w,h,d) = + pair lxy, rxy, cxy, llxy, lrxy, ulxy, urxy ; + path pxy ; numeric hxy, wxy, dxy, nxy; + lxy := (x,y) ; + llxy := (x,y-d) ; + lrxy := (x+w,y-d) ; + urxy := (x+w,y+h) ; + ulxy := (x,y+h) ; + wxy := w ; + hxy := h ; + dxy := d ; + rxy := lxy shifted (wxy,0) ; + pxy := llxy--lrxy--urxy--ulxy--cycle ; + cxy := center pxy ; + nxy := n ; + freeze_box(pos) ; +enddef ; + +def freeze_box (expr pos) = + lxy[pos] := lxy ; + llxy[pos] := llxy ; + lrxy[pos] := lrxy ; + urxy[pos] := urxy ; + ulxy[pos] := ulxy ; + wxy[pos] := wxy ; + hxy[pos] := hxy ; + dxy[pos] := dxy ; + rxy[pos] := rxy ; + pxy[pos] := pxy ; + cxy[pos] := cxy ; + nxy[pos] := nxy ; +enddef ; + +def initialize_box (expr n,x,y,w,h,d) = + numeric bpos ; bpos := 0 ; initialize_box_pos(bpos,n,x,y,w,h,d) ; +enddef ; + +def anchor_box (expr n,x,y,w,h,d) = + currentpicture := currentpicture shifted (-x,-y) ; +enddef ; diff --git a/metapost/context/base/mpiv/mp-apos.mpiv b/metapost/context/base/mpiv/mp-apos.mpiv new file mode 100644 index 000000000..7b7737754 --- /dev/null +++ b/metapost/context/base/mpiv/mp-apos.mpiv @@ -0,0 +1,102 @@ +%D \module +%D [ file=mp-apos.mpiv, +%D version=2012.02.19, % was mp-core: 1999.08.01, anchoring +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=anchored background macros, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +if known context_apos : endinput ; fi ; + +boolean context_apos ; context_apos := true ; + +path posboxes[], + posregions[] ; + +numeric multipages[], + nofposboxes ; + +nofposboxes := 0 ; + +def boxlineoptions = withcolor .8blue enddef ; +def boxfilloptions = withcolor .8white enddef ; + +def connect_positions = + if nofposboxes = 2 : + pickup pencircle scaled boxlinewidth ; + path pa ; pa := posboxes[1] enlarged boxlineoffset ; + path pb ; pb := posboxes[2] enlarged boxlineoffset ; + if pospages[1] = pospages[2] : + draw posboxes[1] boxlineoptions ; + path pc ; pc := center pa {up} .. {down} center pb ; + pair cc ; cc := (pc intersection_point pa) ; + if intersection_found : + pc := pc cutbefore cc ; + cc := (pc intersection_point pb) ; + if intersection_found : + pc := pc cutafter cc ; + drawarrow pc boxlineoptions ; + drawarrow reverse pc boxlineoptions ; + fi ; + fi ; + elseif pospages[1] == RealPageNumber : + draw posboxes[1] boxlineoptions ; + path pc ; pc := center pa {up} ... {right} urcorner (posregions[1] enlarged (20pt,20pt)) ; + pair cc ; cc := (pc intersection_point pa) ; + if intersection_found : + pc := pc cutbefore cc ; + drawarrow pc boxlineoptions ; + fi ; + elseif pospages[2] == RealPageNumber : + draw posboxes[2] boxlineoptions ; + path pc ; pc := ulcorner (posregions[2] enlarged (20pt,20pt)) {right} ... {down} center pb ; + pair cc ; cc := (pc intersection_point pb) ; + if intersection_found : + pc := pc cutafter cc ; + drawarrow pc boxlineoptions ; + fi ; + fi ; + fi ; +enddef ; + +% anch-bar: + +def anch_sidebars_draw (expr p_b_self, p_e_self, y_b_self, y_e_self, h_b_self, d_e_self, + x, y, w, h, alternative, distance, linewidth, linecolor, topoffset, bottomoffset) = + % beware, we anchor at (x,y) + begingroup ; + if alternative = 1 : + interim linecap := rounded ; + else : + interim linecap := butt ; + fi ; + save a, b ; pair a, b ; + if p_b_self = p_e_self : + a := (-distance,y_b_self+h_b_self-y) ; + b := (-distance,y_e_self-d_e_self-y) ; + elseif RealPageNumber = p_b_self : + a := (-distance,y_b_self+h_b_self-y) ; + b := (-distance,0) ; + elseif RealPageNumber = p_e_self : + a := (-distance,h) ; + b := (-distance,y_e_self-d_e_self-y) ; + else : + a := (-distance,h) ; + b := (-distance,0) ; + fi ; + a := (xpart a, min(ypart a + topoffset, h)) ; + b := (xpart b, max(ypart b - bottomoffset,0)) ; + draw + a -- b + if alternative = 1 : + dashed (withdots scaled (linewidth/2)) + fi + withpen pencircle scaled linewidth + withcolor linecolor ; + endgroup ; +enddef ; diff --git a/metapost/context/base/mpiv/mp-asnc.mpiv b/metapost/context/base/mpiv/mp-asnc.mpiv new file mode 100644 index 000000000..2626e4d58 --- /dev/null +++ b/metapost/context/base/mpiv/mp-asnc.mpiv @@ -0,0 +1,177 @@ +%D \module +%D [ file=mp-asnc.mpiv, +%D version=2012.02.19, % was mp-core: 1999.08.01, anchoring +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=anchored background macros, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +if known context_asnc : endinput ; fi ; + +boolean context_av ; context_asnc := true ; + +% will be replaced + +numeric sync_n[], sync_p[][], sync_w[][], sync_h[][], sync_d[][], sync_t[][] ; +pair sync_xy[][] ; color sync_c[][] ; + +def ResetSyncTasks = + path SyncPaths[] ; numeric SyncTasks[], NOfSyncPaths, CurrentSyncClass ; + NOfSyncPaths := CurrentSyncClass := 0 ; + if unknown SyncLeftOffset : numeric SyncLeftOffset ; SyncLeftOffset := 0 ; fi ; + if unknown SyncWidth : numeric SyncWidth ; SyncWidth := 0 ; fi ; + if unknown SyncThreshold : numeric SyncThreshold ; SyncThreshold := LineHeight ; fi ; + if unknown SyncColor : color SyncColor ; SyncColor := .5white ; fi ; + if (SyncLeftOffset = 0) and (SyncWidth = 0) : + SyncWidth := if known TextWidth : TextWidth else : -1cm fi ; + fi ; +enddef ; + +ResetSyncTasks ; + +vardef SyncBox(expr n, i, leftoffset, width, topoffset, bottomoffset) = + save o ; pair o ; o := (xpart llcorner PlainTextArea,ypart sync_xy[n][i]) ; + o shifted (leftoffset,sync_h[n][i]+topoffset) -- + o shifted (width+leftoffset,sync_h[n][i]+topoffset) -- + o shifted (width+leftoffset,bottomoffset) -- + o shifted (leftoffset,bottomoffset) -- cycle +enddef ; + +def SetSyncColor(expr n, i, c) = + sync_c[n][i] := c ; +enddef ; + +def SetSyncThreshold(expr n, i, th) = + sync_th[n][i] := th ; +enddef ; + +vardef TheSyncColor(expr n, i) = + if known sync_c[n][i] : sync_c[n][i] else : SyncColor fi +enddef ; + +vardef TheSyncThreshold(expr n, i) = + if known sync_th[n][i] : sync_th[n][i] else : SyncThreshold fi +enddef ; + +vardef PrepareSyncTasks(expr n, collapse, extendtop, prestartnext) = + ResetSyncTasks ; + if known sync_n[n] : + CurrentSyncClass := n ; + save ok, l, d ; boolean ok ; ok := false ; NOfSyncPaths := l := 0 ; + for i=1 upto sync_n[n] : + if RealPageNumber > sync_p[n][i] : + l := i ; + elseif RealPageNumber = sync_p[n][i] : + NOfSyncPaths := NOfSyncPaths + 1 ; + if not ok : + if i>1 : + if sync_t[n][i-1] = sync_t[n][i] : + SyncPaths[NOfSyncPaths] := SyncBox(n, i, SyncLeftOffset, SyncWidth, PaperHeight, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i ; + else : + SyncPaths[NOfSyncPaths] := SyncBox(n, i-1, SyncLeftOffset, SyncWidth, PaperHeight, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i-1 ; + NOfSyncPaths := NOfSyncPaths + 1 ; + SyncPaths[NOfSyncPaths] := SyncBox(n, i, SyncLeftOffset, SyncWidth, 0, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i ; + fi ; + else : + SyncPaths[NOfSyncPaths] := SyncBox(n, i, SyncLeftOffset, SyncWidth, 0, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i ; + fi ; + else : + SyncPaths[NOfSyncPaths] := SyncBox(n, i, SyncLeftOffset, SyncWidth, 0, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i ; + fi ; + ok := true ; + fi ; + endfor ; + if (NOfSyncPaths = 0) and (l > 0) : + NOfSyncPaths := 1 ; + SyncPaths[NOfSyncPaths] := SyncBox(n, l, SyncLeftOffset, SyncWidth, PaperHeight, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := l ; + fi ; + if NOfSyncPaths > 0 : + for i = 1 upto NOfSyncPaths-1 : + SyncPaths[i] := topboundary SyncPaths[i] -- reverse topboundary SyncPaths[i+1] -- cycle ; + endfor ; + if unknown SyncThresholdMethod : + numeric SyncThresholdMethod ; SyncThresholdMethod := 2 ; + fi ; + if extendtop : + if SyncThresholdMethod = 1 : + if NOfSyncPaths>1 : + d := ypart (ulcorner PlainTextArea - sync_xy[n][SyncTasks[2]]) ; + if (SyncTasks[2]>1) and (d > 0pt) and (d <= TheSyncThreshold(n,sync_t[n][SyncTasks[2]])) and (sync_p[n][SyncTasks[2]] = RealPageNumber) : + SyncPaths[2] := SyncPaths[2] topenlarged PaperHeight ; + fi ; + fi ; + else : + for i = 1 upto NOfSyncPaths : + d := ypart (ulcorner PlainTextArea - sync_xy[n][SyncTasks[i]]) ; + if (d > 0) and (d <= TheSyncThreshold(n,sync_t[n][SyncTasks[i]])) and (sync_p[n][SyncTasks[i]] = RealPageNumber) : + SyncPaths[i] := SyncPaths[i] topenlarged PaperHeight ; + fi ; + endfor ; + fi ; + fi ; + if prestartnext : + if NOfSyncPaths>1 : + if SyncTasks[NOfSyncPaths] < sync_n[n] : % there is a next one + d := ypart (ulcorner PlainTextArea - sync_xy[n][SyncTasks[NOfSyncPaths]+1]) ; + if (d > 0) and (d <= TheSyncThreshold(n, sync_t[n][SyncTasks[i]])) and (sync_p[n][SyncTasks[NOfSyncPaths]+1] = RealPageNumber+1) : + SyncPaths[NOfSyncPaths+1] := + (xpart ulcorner SyncPaths[NOfSyncPaths],ypart llcorner PlainTextArea) -- + (xpart urcorner SyncPaths[NOfSyncPaths],ypart llcorner PlainTextArea) -- + lrcorner SyncPaths[NOfSyncPaths] -- + llcorner SyncPaths[NOfSyncPaths] -- cycle ; + SyncTasks[NOfSyncPaths+1] := SyncTasks[NOfSyncPaths]+1 ; + NOfSyncPaths := NOfSyncPaths + 1 ; + fi ; + fi ; + fi ; + else : + if NOfSyncPaths>1 : + d := ypart (sync_xy[n][SyncTasks[NOfSyncPaths]] - llcorner PlainTextArea) ; + if (d < TheSyncThreshold(n, SyncTasks[NOfSyncPaths])) : + NOfSyncPaths := NOfSyncPaths - 1 ; + SyncPaths[NOfSyncPaths] := SyncPaths[NOfSyncPaths] bottomenlarged PaperHeight ; + fi ; + fi ; + fi ; + if (NOfSyncPaths>1) and collapse : + save j ; numeric j ; j := 1 ; + for i = 2 upto NOfSyncPaths : + if sync_t[n][SyncTasks[i]] = sync_t[n][SyncTasks[j]] : + SyncPaths[j] := boundingbox image (draw SyncPaths[i] ; draw SyncPaths[j] ; ) ; + SyncTasks[j] := SyncTasks[i] ; + else : + j := j + 1 ; + SyncPaths[j] := SyncPaths[i] ; + SyncTasks[j] := SyncTasks[i] ; + fi ; + endfor ; + NOfSyncPaths := j ; + fi ; + fi ; + fi ; +enddef ; + +def SyncTask(expr n) = + if known SyncTasks[n] : SyncTasks[n] else : 0 fi +enddef ; + +def FlushSyncTasks = + for i = 1 upto NOfSyncPaths : + ProcessSyncTask(SyncPaths[i], TheSyncColor(CurrentSyncClass,sync_t[CurrentSyncClass][SyncTasks[i]])) ; + endfor ; +enddef ; + +def ProcessSyncTask(expr p, c) = + fill p withcolor c ; +enddef ; diff --git a/metapost/context/base/mpiv/mp-back.mpiv b/metapost/context/base/mpiv/mp-back.mpiv new file mode 100644 index 000000000..f588adea9 --- /dev/null +++ b/metapost/context/base/mpiv/mp-back.mpiv @@ -0,0 +1,205 @@ +%D \module +%D [ file=mp-back.mp, +%D version=2000.05.31, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=backgrounds, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA / Hans Hagen \& Ton Otten}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +if known context_back : endinput ; fi ; + +boolean context_back ; context_back := true ; + +def some_hash ( expr hash_width , + hash_height , + hash_linewidth , + hash_linecolor , + hash_angle , + hash_gap ) = + + stripe_gap := hash_gap ; + stripe_angle := hash_angle ; + drawoptions (withpen pencircle scaled hash_linewidth + withcolor hash_linecolor) ; + path p ; p := unitsquare xscaled hash_width yscaled hash_height ; + stripe_path_a () (draw) p ; % next we move it all to quadrant 1 + currentpicture := currentpicture shifted urcorner currentpicture ; + +enddef ; + +def some_double_back (expr back_type , + back_width , + back_height , + back_delta , + back_linewidth , + back_linecolor , + back_fillcolor , + back_topcolor , + back_bottomcolor , + back_leftcolor , + back_rightcolor ) = + + numeric ww ; ww := back_width ; + numeric hh ; hh := back_height ; + numeric dd ; dd := back_delta ; + + color back_nillcolor ; back_nillcolor := back_topcolor ; + + path p ; p := fullsquare xscaled ww yscaled hh ; + path q ; q := fullsquare xscaled (ww-2dd) yscaled (hh-2dd) ; + path r ; r := llcorner p -- + lrcorner p shifted (-3dd,0) .. controls lrcorner p .. + lrcorner p shifted (0, 3dd) -- + urcorner p shifted (0,-3dd) .. controls urcorner p .. + urcorner p shifted (-3dd,0) -- + ulcorner p -- cycle ; + path s ; s := r xscaled ((ww-2dd)/ww) yscaled ((hh-2dd)/hh) ; + path t ; t := llcorner p -- + lrcorner p -- + urcorner p shifted (0,-3dd) .. controls urcorner p .. + urcorner p shifted (-3dd,0) -- + ulcorner p shifted ( 3dd,0) .. controls ulcorner p .. + ulcorner p shifted (0,-3dd) -- + llcorner p -- cycle ; + path u ; u := t xscaled ((ww-2dd)/ww) yscaled ((hh-2dd)/hh) ; + path v ; v := llcorner p shifted ( 3dd,0) -- + lrcorner p shifted (-3dd,0) .. controls lrcorner p .. + lrcorner p shifted (0, 3dd) -- + urcorner p shifted (0,-3dd) .. controls urcorner p .. + urcorner p shifted (-3dd,0) -- + ulcorner p shifted ( 3dd,0) .. controls ulcorner p .. + ulcorner p shifted (0,-3dd) .. + llcorner p shifted (0, 3dd) .. controls llcorner p .. cycle ; % {down} .. cycle ; + path w ; w := t xscaled ((ww-2dd)/ww) yscaled ((hh-2dd)/hh) ; + path a ; a := llcorner p -- ulcorner p -- + ulcorner q -- llcorner q -- cycle ; + path b ; b := llcorner p -- lrcorner p -- + lrcorner q -- llcorner q -- cycle ; + path c ; c := lrcorner p -- urcorner p -- + urcorner q -- lrcorner q -- cycle ; + path d ; d := ulcorner p -- urcorner p -- + urcorner q -- ulcorner q -- cycle ; + path e ; e := llcorner p -- lrcorner p -- + urcorner p -- urcorner q -- + lrcorner q -- llcorner q -- cycle ; + path f ; f := llcorner p -- ulcorner p -- + urcorner p -- urcorner q -- + ulcorner q -- llcorner q -- cycle ; + + linecap := butt ; pickup pencircle scaled back_linewidth ; + + if back_type=1 : + + fill p withcolor back_fillcolor ; + fill a withcolor back_leftcolor ; + fill b withcolor back_bottomcolor ; + fill c withcolor back_rightcolor ; + fill d withcolor back_topcolor ; + draw a withcolor back_linecolor ; + draw d withcolor back_linecolor ; + draw b withcolor back_linecolor ; + draw c withcolor back_linecolor ; + + elseif back_type=2 : + + fill p withcolor back_fillcolor ; + fill e withcolor back_bottomcolor ; + fill f withcolor back_topcolor ; + draw e withcolor back_linecolor ; + draw f withcolor back_linecolor ; + + elseif back_type=3 : + + fill v withcolor back_nillcolor ; + fill w withcolor back_fillcolor ; + draw v withcolor back_linecolor ; + draw w withcolor back_linecolor ; + + elseif back_type=4 : + + fill t withcolor back_nillcolor ; + fill u withcolor back_fillcolor ; + draw t withcolor back_linecolor ; + draw u withcolor back_linecolor ; + + elseif back_type=5 : + + t := t rotatedaround(center t,180) ; + u := u rotatedaround(center u,180) ; + + fill t withcolor back_nillcolor ; + fill u withcolor back_fillcolor ; + draw t withcolor back_linecolor ; + draw u withcolor back_linecolor ; + + elseif back_type=6 : + + r := r rotatedaround(center r,180) ; + s := s rotatedaround(center s,180) ; + + fill r withcolor back_nillcolor ; + fill s withcolor back_fillcolor ; + draw r withcolor back_linecolor ; + draw s withcolor back_linecolor ; + + elseif back_type=7 : + + fill r withcolor back_nillcolor ; + fill s withcolor back_fillcolor ; + draw r withcolor back_linecolor ; + draw s withcolor back_linecolor ; + +fi ; + +enddef ; + +endinput ; + +beginfig (1) ; + +some_double_back (1, 4.5cm, 1.5cm, .25cm, 1mm, + .5white, .8white, .7white, .6white, .7white, .6white) + +currentpicture := currentpicture shifted (0,-3cm) ; + +some_double_back (2, 4.5cm, 1.5cm, .25cm, 1mm, + .5white, .8white, .7white, .6white, white, white) + +currentpicture := currentpicture shifted (0,-3cm) ; + +some_double_back (3, 4.5cm, 1.5cm, .25cm, 1mm, + .5white, .8white, .7white, white, white, white) + +currentpicture := currentpicture shifted (0,-3cm) ; + +some_double_back (4, 4.5cm, 1.5cm, .25cm, 1mm, + .5white, .8white, .7white, white, white, white) + +currentpicture := currentpicture shifted (0,-3cm) ; + +some_double_back (5, 4.5cm, 1.5cm, .25cm, 1mm, + .5white, .8white, .7white, white, white, white) + +currentpicture := currentpicture shifted (0,-3cm) ; + +some_double_back (6, 4.5cm, 1.5cm, .25cm, 1mm, + .5white, .8white, .7white, white, white, white) + +currentpicture := currentpicture shifted (0,-3cm) ; + +some_double_back (7, 4.5cm, 1.5cm, .25cm, 1mm, + .5white, .8white, .7white, white, white, white) + +currentpicture := currentpicture shifted (0,-3cm) ; + +some_double_back (8, 4.5cm, 1.5cm, .25cm, 1mm, + .5white, .8white, .7white, white, white, white) + +endfig ; + +end . diff --git a/metapost/context/base/mpiv/mp-bare.mpiv b/metapost/context/base/mpiv/mp-bare.mpiv new file mode 100644 index 000000000..c6194b1ee --- /dev/null +++ b/metapost/context/base/mpiv/mp-bare.mpiv @@ -0,0 +1,93 @@ +%D \module +%D [ file=mp-bare.mpiv, +%D version=2014.10.31, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=plain plugins, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +if known context_bare : endinput ; fi ; +boolean context_bare ; context_bare := true ; + +numeric mfun_tt_w[], mfun_tt_h[], mfun_tt_d[] ; +numeric mfun_tt_n ; mfun_tt_n := 0 ; +picture mfun_tt_p ; mfun_tt_p := nullpicture ; +picture mfun_tt_o ; mfun_tt_o := nullpicture ; +picture mfun_tt_c ; mfun_tt_c := nullpicture ; + +if unknown mfun_trial_run : + boolean mfun_trial_run ; + mfun_trial_run := false ; +fi ; + +if unknown mfun_first_run : + boolean mfun_first_run ; + mfun_first_run := true ; +fi ; + +def mfun_reset_tex_texts = + mfun_tt_n := 0 ; + mfun_tt_p := nullpicture ; + mfun_tt_o := nullpicture ; % redundant + mfun_tt_c := nullpicture ; % redundant +enddef ; + +def mfun_flush_tex_texts = + addto currentpicture also mfun_tt_p +enddef ; + +extra_beginfig := extra_beginfig & "mfun_reset_tex_texts ;" ; +extra_endfig := "mfun_flush_tex_texts ; mfun_reset_tex_texts ; " & extra_endfig ; + +vardef colordecimals primary c = + if cmykcolor c : + decimal cyanpart c & ":" & decimal magentapart c & ":" & decimal yellowpart c & ":" & decimal blackpart c + elseif rgbcolor c : + decimal redpart c & ":" & decimal greenpart c & ":" & decimal bluepart c + else : + decimal c + fi +enddef ; + +vardef rawtextext(expr str) = % todo: avoid currentpicture + if str = "" : + nullpicture + else : + mfun_tt_n := mfun_tt_n + 1 ; + mfun_tt_c := nullpicture ; + if mfun_trial_run : + mfun_tt_o := nullpicture ; + addto mfun_tt_o doublepath origin _op_ ; % save drawoptions + addto mfun_tt_c doublepath unitsquare + withprescript "tx_number=" & decimal mfun_tt_n + withprescript "tx_stage=trial" + withprescript "tx_color=" & colordecimals colorpart mfun_tt_o + withpostscript str ; + addto mfun_tt_p also mfun_tt_c ; + elseif known mfun_tt_d[mfun_tt_n] : + addto mfun_tt_c doublepath unitsquare + xscaled mfun_tt_w[mfun_tt_n] + yscaled (mfun_tt_h[mfun_tt_n] + mfun_tt_d[mfun_tt_n]) + shifted (0,-mfun_tt_d[mfun_tt_n]) + withprescript "tx_number=" & decimal mfun_tt_n + withprescript "tx_stage=final" ; + else : + addto mfun_tt_c doublepath unitsquare ; % unitpicture + fi ; + mfun_tt_c + fi +enddef ; + +primarydef str infont name = % nasty hack + if name = "" : + rawtextext(str) + else : + rawtextext("\definedfont[" & name & "]" & str) + fi +enddef ; + diff --git a/metapost/context/base/mpiv/mp-base.mpiv b/metapost/context/base/mpiv/mp-base.mpiv new file mode 100644 index 000000000..28eb57fb8 --- /dev/null +++ b/metapost/context/base/mpiv/mp-base.mpiv @@ -0,0 +1,956 @@ +% This is a reformatted copy of the plain.mp file. We use a copy +% because (1) we want to make sure that there are no unresolved +% dependencies, and (2) we may patch this file eventually. + +% This file gives the macros for plain MetaPost It contains all the +% features of plain METAFONT except those specific to font-making. +% There are also a number of macros for labeling figures, etc. + +% For practical reasons I have moved some new code here (and might +% remove some code as well). After all, there is no development in +% this format. + +string base_name, base_version ; + +base_name := "plain" ; +base_version := "1.004 for metafun iv" ; + +message "loading metafun, including plain.mp version " & base_version ; + +delimiters () ; % this makes parentheses behave like parentheses + +def upto = step 1 until enddef ; +def downto = step -1 until enddef ; + +def exitunless expr c = + exitif not c +enddef ; + +let relax = \ ; % ignore the word relax, as in TeX +let \\ = \ ; % double relaxation is like single + +def [[ = [ [ enddef ; +def ]] = ] ] enddef ; + +def -- = + {curl 1} .. {curl 1} +enddef ; + +def --- = + .. tension infinity .. +enddef ; + +def ... = + .. tension atleast 1 .. +enddef ; + +def gobble primary g = +enddef ; + +primarydef g gobbled gg = +enddef ; + +def hide(text t) = + exitif numeric begingroup t ; endgroup ; +enddef ; + +def ??? = + hide ( + interim showstopping := 1 ; + showdependencies + ) +enddef ; + +def stop expr s = + message s ; + gobble readstring +enddef ; + +warningcheck :=1 ; +tracinglostchars :=1 ; + +def interact = % sets up to make "show" commands stop + hide ( + showstopping := 1 ; + tracingonline := 1 ; + ) +enddef ; + +def loggingall = % puts tracing info into the log + tracingcommands := 3 ; + tracingtitles := 1 ; + tracingequations := 1 ; + tracingcapsules := 1 ; + tracingspecs := 2 ; + tracingchoices := 1 ; + tracinglostchars := 1 ; + tracingstats := 1 ; + tracingoutput := 1 ; + tracingmacros := 1 ; + tracingrestores := 1 ; +enddef ; + +def tracingall = % turns on every form of tracing + tracingonline := 1 ; + showstopping := 1 ; + loggingall ; +enddef ; + +def tracingnone = % turns off every form of tracing + tracingcommands := 0 ; + tracingtitles := 0 ; + tracingequations := 0 ; + tracingcapsules := 0 ; + tracingspecs := 0 ; + tracingchoices := 0 ; + tracinglostchars := 0 ; + tracingstats := 0 ; + tracingoutput := 0 ; + tracingmacros := 0 ; + tracingrestores := 0 ; +enddef ; + +%% dash patterns + +vardef dashpattern(text t) = + save on, off, w ; + let on = _on_ ; + let off = _off_ ; + w = 0 ; + nullpicture t +enddef ; + +tertiarydef p _on_ d = + begingroup save pic ; + picture pic; + pic = p ; + addto pic doublepath (w,w) .. (w+d,w) ; + w := w + d ; + pic shifted (0,d) + endgroup +enddef ; + +tertiarydef p _off_ d = + begingroup w := w + d ; + p shifted (0,d) + endgroup +enddef ; + +%% basic constants and mathematical macros + +% numeric constants + +newinternal eps, epsilon, infinity, _ ; + +eps := .00049 ; % this is a pretty small positive number +epsilon := 1/256/256 ; % but this is the smallest +infinity := 4095.99998 ; % and this is the largest +_ := -1 ; % internal constant to make macros unreadable but shorter + +% linejoin and linecap types + +newinternal mitered, rounded, beveled, butt, squared ; + +mitered := 0 ; rounded := 1 ; beveled := 2 ; +butt := 0 ; rounded := 1 ; squared := 2 ; + +% pair constants + +pair right, left, up, down, origin; + +origin = (0,0) ; +up = -down = (0,1) ; +right = -left = (1,0) ; + +% path constants + +path quartercircle, halfcircle, fullcircle, unitsquare ; + +fullcircle = makepath pencircle ; +halfcircle = subpath (0,4) of fullcircle ; +quartercircle = subpath (0,2) of fullcircle ; +unitsquare = (0,0) -- (1,0) -- (1,1) -- (0,1) -- cycle ; + +% transform constants + +transform identity ; + +for z=origin,right,up : + z transformed identity = z ; +endfor + +% color constants (all in rgb color space) + +color black, white, red, green, blue, cyan, magenta, yellow, background; + +black := (0,0,0) ; +white := (1,1,1) ; +red := (1,0,0) ; +green := (0,1,0) ; +blue := (0,0,1) ; +cyan := (0,1,1) ; +magenta := (1,0,1) ; +yellow := (1,1,0) ; + +background := white ; % obsolete + +let graypart = greypart ; +let greycolor = numeric ; +let graycolor = numeric ; + +% color part (will be overloaded) + +def colorpart primary t = + if colormodel t=7: + (cyanpart t, magentapart t, yellowpart t, blackpart t) + elseif colormodel t = 5 : + (redpart t, greenpart t, bluepart t) + elseif colormodel t = 3 : + (greypart t) + elseif colormodel t = 1 : + false + elseif defaultcolormodel = 7 : + (0,0,0,1) + elseif defaultcolormodel = 5 : + black + elseif defaultcolormodel = 3 : + 0 + else : + false + fi +enddef ; + +% picture constants + +picture blankpicture, evenly, withdots ; + +blankpicture = nullpicture ; % display blankpicture... +evenly = dashpattern(on 3 off 3) ; % dashed evenly +withdots = dashpattern(off 2.5 on 0 off 2.5) ; % dashed withdots + +% string constants + +string ditto, EOF ; + +ditto = char 34 ; % ASCII double-quote mark +EOF = char 0 ; % end-of-file for readfrom and write..to + +% pen constants + +pen pensquare, penrazor, penspeck ; + +pensquare = makepen(unitsquare shifted -(.5,.5)) ; +penrazor = makepen((-.5,0) -- (.5,0) -- cycle) ; +penspeck = pensquare scaled eps ; + +% nullary operators + +vardef whatever = + save ? ; + ? +enddef ; + +% unary operators + +let abs = length ; + +vardef round primary u = + if numeric u : + floor(u+.5) + elseif pair u : + (round xpart u, round ypart u) + else : + u + fi +enddef ; + +vardef ceiling primary x = + -floor(-x) +enddef ; + +vardef byte primary s = + if string s : + ASCII + fi s +enddef ; + +vardef dir primary d = + right rotated d +enddef ; + +vardef unitvector primary z = + z/abs z +enddef ; + +vardef inverse primary T = + transform T_ ; + T_ transformed T = identity ; + T_ +enddef ; + +vardef counterclockwise primary c = + if turningnumber c <= 0 : + reverse + fi c +enddef ; + +vardef tensepath expr r = + for k=0 upto length r - 1 : + point k of r --- + endfor + if cycle r : + cycle + else : + point infinity of r + fi +enddef ; + +vardef center primary p = + .5[llcorner p, urcorner p] +enddef ; + +% binary operators + +primarydef x mod y = + (x-y*floor(x/y)) +enddef ; + +primarydef x div y = + floor(x/y) +enddef ; + +primarydef w dotprod z = + (xpart w * xpart z + ypart w * ypart z) +enddef ; + +primarydef x**y = + if y = 2 : + x*x + else : + takepower y of x + fi +enddef ; + +def takepower expr y of x = + if x>0 : + mexp(y*mlog x) + elseif (x=0) and (y>0) : + 0 + else : + 1 + if y = floor y : + if y >= 0 : + for n=1 upto y : + *x + endfor + else : + for n=-1 downto y : + /x + endfor + fi + else : + hide(errmessage "Undefined power: " & decimal x & "**" & decimal y) + fi + fi +enddef ; + +% for big number systems: +% +% primarydef x**y = +% if y = 1 : +% x +% elseif y = 2 : +% x*x +% elseif y = 3 : +% x*x*x +% else : +% takepower y of x +% fi +% enddef ; +% +% vardef takepower expr y of x = +% if (x=0) and (y>0) : +% 0 +% else : +% 1 +% if y = floor y : +% if y >= 0 : +% for n=1 upto y : +% *x +% endfor +% else : +% for n=-1 downto y : +% /x +% endfor +% fi +% else : +% hide(errmessage "Undefined power: " & decimal x & "**" & decimal y) +% fi +% fi +% enddef ; + +vardef direction expr t of p = + postcontrol t of p - precontrol t of p +enddef ; + +vardef directionpoint expr z of p = + a_ := directiontime z of p ; + if a_ < 0 : + errmessage("The direction doesn't occur") ; + fi + point a_ of p +enddef ; + +secondarydef p intersectionpoint q = + begingroup + save x_, y_ ; + (x_,y_) = p intersectiontimes q ; + if x_ < 0 : + errmessage("The paths don't intersect") ; + origin + else : + .5[point x_ of p, point y_ of q] + fi + endgroup +enddef ; + +tertiarydef p softjoin q = + begingroup + c_ := fullcircle scaled 2join_radius shifted point 0 of q ; + a_ := ypart(c_ intersectiontimes p) ; + b_ := ypart(c_ intersectiontimes q) ; + if a_ < 0 : + point 0 of p{direction 0 of p} + else : + subpath(0,a_) of p + fi + ... + if b_ < 0 : + {direction infinity of q} point infinity of q + else : + subpath(b_,infinity) of q + fi + endgroup +enddef ; + +newinternal join_radius, a_, b_ ; path c_ ; + +path cuttings ; % what got cut off + +tertiarydef a cutbefore b = % tries to cut as little as possible + begingroup + save t ; + (t, whatever) = a intersectiontimes b ; + if t < 0 : + cuttings := point 0 of a ; + a + else : + cuttings := subpath (0,t) of a ; + subpath (t,length a) of a + fi + endgroup +enddef ; + +tertiarydef a cutafter b = + reverse (reverse a cutbefore b) + hide(cuttings := reverse cuttings) +enddef ; + +% special operators + +vardef incr suffix $ = $:=$+1; $ enddef ; +vardef decr suffix $ = $:=$-1; $ enddef ; + +def reflectedabout(expr w,z) = % reflects about the line w..z + transformed + begingroup + transform T_ ; + w transformed T_ = w ; + z transformed T_ = z ; + xxpart T_ = -yypart T_ ; + xypart T_ = yxpart T_ ; % T_ is a reflection + T_ + endgroup +enddef ; + +def rotatedaround(expr z, d) = % rotates d degrees around z + shifted -z rotated d shifted z +enddef ; + +let rotatedabout = rotatedaround ; % for roundabout people + +vardef min(expr u)(text t) = % t is a list of numerics, pairs, or strings + save u_ ; + setu_ u ; + for uu = t : + if uu < u_ : + u_ := uu ; + fi + endfor + u_ +enddef ; + +vardef max(expr u)(text t) = % t is a list of numerics, pairs, or strings + save u_ ; + setu_ u ; + for uu = t : + if uu > u_ : + u_ := uu ; + fi + endfor + u_ +enddef ; + +def setu_ primary u = + if pair u : + pair u_ + elseif string u : + string u_ + fi ; + u_=u +enddef ; + +def flex(text t) = % t is a list of pairs + hide ( + n_ := 0 ; + for z=t : + z_[incr n_] := z ; + endfor + dz_ := z_[n_]-z_1 + ) + z_1 for k=2 upto n_-1 : + ... z_[k]{dz_} + endfor ... z_[n_] +enddef ; + +newinternal n_; pair z_[],dz_; + +def superellipse(expr r,t,l,b,s) = + r { up } ... (s[xpart t,xpart r],s[ypart r,ypart t]) { t-r } ... + t { left } ... (s[xpart t,xpart l],s[ypart l,ypart t]) { l-t } ... + l { down } ... (s[xpart b,xpart l],s[ypart l,ypart b]) { b-l } ... + b { right } ... (s[xpart b,xpart r],s[ypart r,ypart b]) { r-b } ... cycle enddef ; + +vardef interpath(expr a,p,q) = + for t=0 upto length p-1 : + a[point t of p, point t of q] .. controls a[postcontrol t of p, postcontrol t of q] and a[precontrol t+1 of p, precontrol t+1 of q] .. + endfor + if cycle p : + cycle + else : + a[point infinity of p, point infinity of q] + fi +enddef ; + +vardef solve@#(expr true_x,false_x)= % @#(true_x)=true, @#(false_x)=false + tx_:=true_x; fx_:=false_x; + forever : + x_ := .5[tx_,fx_] ; + exitif abs(tx_-fx_) <= tolerance ; + if @#(x_) : + tx_ + else : + fx_ + fi := x_ ; + endfor + x_ % now x_ is near where @# changes from true to false +enddef ; + +newinternal tolerance, tx_, fx_, x_ ; + +tolerance := .01 ; + +vardef buildcycle(text ll) = + save ta_, tb_, k_, i_, pp_ ; path pp_[] ; + k_ = 0 ; + for q=ll : + pp_[incr k_] = q ; + endfor + i_ = k_ ; + for i=1 upto k_ : + (ta_[i], length pp_[i_]-tb_[i_]) = pp_[i] intersectiontimes reverse pp_[i_] ; + if ta_[i]<0 : + errmessage("Paths "& decimal i &" and "& decimal i_ &" don't intersect") ; + fi + i_ := i; + endfor + for i=1 upto k_ : + subpath (ta_[i],tb_[i]) of pp_[i] .. + endfor + cycle +enddef ; + +%% units of measure + +mm := 2.83464 ; +pt := 0.99626 ; +dd := 1.06601 ; +bp := 1 ; +cm := 28.34645 ; +pc := 11.95517 ; +cc := 12.79213 ; +in := 72 ; + +vardef magstep primary m = % obsolete + mexp(46.67432m) +enddef ; + +%% macros for drawing and filling + +def drawoptions(text t) = + def _op_ = t enddef +enddef ; + +% parameters that effect drawing + +linejoin := rounded ; +linecap := rounded ; +miterlimit := 10 ; + +drawoptions() ; + +pen currentpen ; +picture currentpicture ; + +def fill expr c = + addto currentpicture contour c _op_ +enddef ; + +def draw expr p = + addto currentpicture + if picture p : + also p + else : + doublepath p withpen currentpen + fi + _op_ +enddef ; + +def filldraw expr c = + addto currentpicture contour c withpen currentpen _op_ +enddef ; + +% def drawdot expr z = +% addto currentpicture contour makepath currentpen shifted z _op_ +% enddef ; +% +% testcase DEK: +% +% for j=1 upto 9 : +% pickup pencircle xscaled .4 yscaled .2 ; +% drawdot (10j,0) withpen pencircle xscaled .5j yscaled .25j rotated 45 ; +% pickup pencircle xscaled .5j yscaled .25j rotated 45 ; +% drawdot (10j,10); +% endfor ; +% +% or: +% +%\startMPpage +% +% def drawdot expr z = +% addto currentpicture contour (makepath currentpen shifted z) _op_ +% enddef; +% +% drawdot origin shifted (0,-3cm) withpen pencircle scaled 2cm ; +% pickup pencircle scaled 2cm ; drawdot origin withcolor red ; + +def drawdot expr p = + if pair p : + addto currentpicture doublepath p withpen currentpen _op_ + else : + errmessage("drawdot only accepts a pair expression") + fi +enddef ; + +def unfill expr c = fill c withcolor background enddef ; +def undraw expr p = draw p withcolor background enddef ; +def unfilldraw expr c = filldraw c withcolor background enddef ; +def undrawdot expr z = drawdot z withcolor background enddef ; + +def erase text t = + def _e_ = + withcolor background hide(def _e_ = enddef ;) + enddef ; + t _e_ +enddef ; + +def _e_ = enddef ; + +def cutdraw text t = + begingroup + interim linecap := butt ; + draw t _e_ ; + endgroup +enddef ; + +vardef image(text t) = + save currentpicture ; + picture currentpicture ; + currentpicture := nullpicture ; + t ; + currentpicture +enddef ; + +def pickup secondary q = + if numeric q : + numeric_pickup_ + else : + pen_pickup_ + fi q +enddef ; + +def numeric_pickup_ primary q = + if unknown pen_[q] : + errmessage "Unknown pen" ; + clearpen + else : + currentpen := pen_ [q] ; + pen_lft := pen_lft_[q] ; + pen_rt := pen_rt_ [q] ; + pen_top := pen_top_[q] ; + pen_bot := pen_bot_[q] ; + currentpen_path := pen_path_[q] + fi ; +enddef ; + +def pen_pickup_ primary q = + currentpen := q ; + pen_lft := xpart penoffset down of currentpen ; + pen_rt := xpart penoffset up of currentpen ; + pen_top := ypart penoffset left of currentpen ; + pen_bot := ypart penoffset right of currentpen ; + path currentpen_path ; +enddef ; + +newinternal pen_lft, pen_rt, pen_top, pen_bot, pen_count_ ; + +vardef savepen = + pen_[incr pen_count_] = currentpen ; + pen_lft_ [pen_count_] = pen_lft ; + pen_rt_ [pen_count_] = pen_rt ; + pen_top_ [pen_count_] = pen_top ; + pen_bot_ [pen_count_] = pen_bot ; + pen_path_[pen_count_] = currentpen_path ; + pen_count_ +enddef ; + +def clearpen = + currentpen := nullpen; + pen_lft := pen_rt := pen_top := pen_bot := 0 ; + path currentpen_path ; +enddef ; + +def clear_pen_memory = + pen_count_ := 0 ; + numeric pen_lft_[], pen_rt_[], pen_top_[], pen_bot_[] ; + pen currentpen, pen_[]; + path currentpen_path, pen_path_[] ; +enddef ; + +vardef lft primary x = x + if pair x: (pen_lft,0) else: pen_lft fi enddef ; +vardef rt primary x = x + if pair x: (pen_rt,0) else: pen_rt fi enddef ; +vardef top primary y = y + if pair y: (0,pen_top) else: pen_top fi enddef ; +vardef bot primary y = y + if pair y: (0,pen_bot) else: pen_bot fi enddef ; + +vardef penpos@#(expr b,d) = + (x@#r-x@#l,y@#r-y@#l) = (b,0) rotated d ; + x@# = .5(x@#l+x@#r) ; + y@# = .5(y@#l+y@#r) ; % ; added HH +enddef ; + +path path_.l, path_.r ; + +def penstroke text t = + forsuffixes e = l, r : + path_.e := t ; + endfor + fill path_.l -- reverse path_.r -- cycle +enddef ; + +%% High level drawing commands + +newinternal ahlength, ahangle ; + +ahlength := 4 ; % default arrowhead length 4bp +ahangle := 45 ; % default head angle 45 degrees + +vardef arrowhead expr p = + save q, e ; path q ; pair e ; + e = point length p of p ; + q = gobble(p shifted -e cutafter makepath(pencircle scaled 2ahlength)) cuttings ; + (q rotated .5ahangle & reverse q rotated -.5ahangle -- cycle) shifted e +enddef ; + +path _apth ; + +def drawarrow expr p = _apth := p ; _finarr enddef ; +def drawdblarrow expr p = _apth := p ; _findarr enddef ; + +def _finarr text t = + draw _apth t ; + filldraw arrowhead _apth t +enddef ; + +def _findarr text t = % this had fill in 0.63 (potential incompatibility) + draw _apth t ; + filldraw arrowhead _apth withpen currentpen t ; + filldraw arrowhead reverse _apth withpen currentpen t ; % ; added HH +enddef ; + +%% macros for labels + +newinternal bboxmargin ; + +bboxmargin := 2bp ; % this can bite you + +vardef bbox primary p = + llcorner p - ( bboxmargin, bboxmargin) -- + lrcorner p + ( bboxmargin,-bboxmargin) -- + urcorner p + ( bboxmargin, bboxmargin) -- + ulcorner p + (-bboxmargin, bboxmargin) -- cycle +enddef ; + +string defaultfont ; newinternal defaultscale, labeloffset ; + +defaultfont := "cmr10" ; +defaultscale := 1 ; +labeloffset := 3bp ; + +vardef thelabel@#(expr s,z) = % Position s near z + save p ; picture p ; + if picture s : + p = s + else : + p = s infont defaultfont scaled defaultscale + fi ; + p shifted (z + labeloffset*laboff@# - ( labxf@#*lrcorner p + labyf@#*ulcorner p + (1-labxf@#-labyf@#)*llcorner p) ) +enddef ; + +def label = + draw thelabel +enddef ; + +newinternal dotlabeldiam ; + +dotlabeldiam := 3bp ; + +vardef dotlabel@#(expr s,z) text t_ = + label@#(s,z) t_ ; + % label@#(s,z) ; + interim linecap := rounded ; + draw z withpen pencircle scaled dotlabeldiam t_ ; +enddef ; + +def makelabel = + dotlabel +enddef ; + +% this will be overloaded + +pair laboff, laboff.lft, laboff.rt, laboff.top, laboff.bot ; +pair laboff.ulft, laboff.llft, laboff.urt, laboff.lrt ; + +laboff = (0,0) ; labxf = .5 ; labyf = .5 ; +laboff.lft = (-1,0) ; labxf.lft = 1 ; labyf.lft = .5 ; +laboff.rt = (1,0) ; labxf.rt = 0 ; labyf.rt = .5 ; +laboff.bot = (0,-1) ; labxf.bot = .5 ; labyf.bot = 1 ; +laboff.top = (0,1) ; labxf.top = .5 ; labyf.top = 0 ; +laboff.ulft = (-.7,.7) ; labxf.ulft = 1 ; labyf.ulft = 0 ; +laboff.urt = (.7,.7) ; labxf.urt = 0 ; labyf.urt = 0 ; +laboff.llft = -(.7,.7) ; labxf.llft = 1 ; labyf.llft = 1 ; +laboff.lrt = (.7,-.7) ; labxf.lrt = 0 ; labyf.lrt = 1 ; + +vardef labels@#(text t) = + forsuffixes $=t : + label@#(str$,z$) ; + endfor +enddef ; + +% till lhere + +vardef dotlabels@#(text t) = + forsuffixes $=t: + dotlabel@#(str$,z$) ; + endfor +enddef ; + +vardef penlabels@#(text t) = + forsuffixes $$=l,,r : + forsuffixes $=t : + makelabel@#(str$.$$,z$.$$) ; + endfor + endfor +enddef ; + +% range 4 thru 10 + +def range expr x = + _numtok_[x] +enddef ; + +def _numtok_ suffix x = + x +enddef ; + +tertiarydef m thru n = + m for x=m+1 step 1 until n : + , _numtok_[x] + endfor +enddef ; + +%% Overall administration + +string extra_beginfig, extra_endfig ; + +extra_beginfig := "" ; +extra_endfig := "" ; + +def beginfig(expr c) = + begingroup + charcode := c ; + clearxy ; + clearit ; + clearpen ; + pickup defaultpen ; + drawoptions() ; + scantokens extra_beginfig ; +enddef ; + +def endfig = + ; % added by HH + scantokens extra_endfig ; + shipit ; + endgroup +enddef ; + +%% last-minute items + +vardef z@# = + (x@#,y@#) +enddef ; + +def clearxy = + save x, y +enddef ; + +def clearit = + currentpicture := nullpicture +enddef ; + +def shipit = + shipout currentpicture +enddef ; + +let bye = end ; +outer end, bye ; + +clear_pen_memory ; % initialize the savepen mechanism +clearit ; + +% set default line width + +newinternal defaultpen ; + +pickup pencircle scaled .5bp ; + +defaultpen := savepen ; diff --git a/metapost/context/base/mpiv/mp-butt.mpiv b/metapost/context/base/mpiv/mp-butt.mpiv new file mode 100644 index 000000000..6f5b90a7e --- /dev/null +++ b/metapost/context/base/mpiv/mp-butt.mpiv @@ -0,0 +1,77 @@ +%D \module +%D [ file=mp-butt.mpiv, +%D version=2000.05.31, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=buttons, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +if known context_butt : endinput ; fi ; + +boolean context_butt ; context_butt := true ; + +def predefinedbutton (expr button_type, button_size, button_linecolor, button_fillcolor) = + + begingroup ; + + save button_linewidth, p, d, l ; + + numeric button_linewidth ; button_linewidth := button_size/10 ; + + drawoptions (withpen pencircle scaled button_linewidth withcolor button_linecolor) ; + + path p ; p := unitsquare scaled button_size ; + numeric d ; d := button_size ; + numeric l ; l := button_linewidth ; + + fill p withcolor button_fillcolor ; + draw p ; + + if button_type = 101 : + draw (d-2l,2l)--(2l,.5d)--(d-2l,d-2l)--cycle ; + elseif button_type = 102 : + draw (2l,2l)--(d-2l,.5d)--(2l,d-2l)--cycle ; + elseif button_type = 103 : + for i=2l step 2l until d-2l : + draw (2l,i)--(2l ,i) ; + draw (4l,i)--(d-2l,i) ; + endfor ; + elseif button_type = 104 : + for i=2l step 2l until d-2l : + draw (2l ,i)--(d/2-l,i) ; + draw (d/2+l,i)--(d-2l ,i) ; + endfor ; + elseif button_type = 105 : + fill fullcircle scaled (.2d) shifted (.5d,.7d) ; + fill fullcircle xscaled (.6d) yscaled d shifted (.5d,0) ; + clip currentpicture to p ; + draw p ; + elseif button_type = 106 : + draw (2l,2l)--(d-2l,d-2l) ; + draw (d-2l,2l)--(2l,d-2l) ; + elseif button_type = 107 : + p := (3l,d-2l)--(d-3l,d-2l)--(.5d,4l)--cycle ; + fill p ; draw p ; + draw (.5d,2l) ; + elseif button_type = 108 : + draw (.5d,2l)--(d-2l,d-2l)--(2l,d-2l)--cycle ; + elseif button_type = 109 : + draw (.5d,d-2l)--(d-2l,2l)--(2l,2l)--cycle ; + elseif button_type = 110 : + button_linewidth := button_linewidth/2 ; + draw p enlarged (-2l,-l) ; + for i=2l step l until d-2l : + draw (3l,i)--(d-3l,i) ; + endfor ; + fi ; + + endgroup ; + +enddef ; + +let some_button = predefinedbutton diff --git a/metapost/context/base/mpiv/mp-char.mpiv b/metapost/context/base/mpiv/mp-char.mpiv new file mode 100644 index 000000000..f604accd8 --- /dev/null +++ b/metapost/context/base/mpiv/mp-char.mpiv @@ -0,0 +1,1116 @@ +%D \module +%D [ file=mp-char.mpiv, +%D version=2011.10.1, % 1998.10.10, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=charts, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +%D This is ancient code .. but I see no need to rewrite it. This is +%D already a partial rewrite but more could be delegated to \LUA\ +%D when used in \CONTEXT\ but it does not pay off now to look into +%D that. + +%D For historic reason we first build and then flush but we could +%D as well flush directly which would save us caching. + +if unknown context_shap : input "mp-shap.mpiv" ; fi ; +if known context_flow : endinput ; fi ; + +boolean context_flow ; context_flow := true ; + +%D settings + +numeric flow_grid_width ; flow_grid_width := 60pt ; +numeric flow_shape_width ; flow_shape_width := 45pt ; +numeric flow_grid_height ; flow_grid_height := 40pt ; +numeric flow_shape_height ; flow_shape_height := 30pt ; +numeric flow_chart_offset ; flow_chart_offset := 2pt ; +color flow_chart_background_color ; flow_chart_background_color := white ; +boolean flow_show_mid_points ; flow_show_mid_points := false ; +boolean flow_show_con_points ; flow_show_con_points := false ; +boolean flow_show_all_points ; flow_show_all_points := false ; +numeric flow_shape_line_width ; flow_shape_line_width := 2pt ; +color flow_shape_line_color ; flow_shape_line_color := .5white ; +color flow_shape_fill_color ; flow_shape_fill_color := .9white ; +color flow_connection_line_color ; flow_connection_line_color := .2white ; + +numeric flow_connection_line_width ; flow_connection_line_width := flow_shape_line_width ; + +numeric flow_connection_smooth_size ; flow_connection_smooth_size := 5pt ; +numeric flow_connection_arrow_size ; flow_connection_arrow_size := 4pt ; +numeric flow_connection_dash_size ; flow_connection_dash_size := 3pt ; + +numeric flow_max_x ; flow_max_x := 6 ; +numeric flow_max_y ; flow_max_y := 4 ; + +boolean flow_smooth ; flow_smooth := true ; +boolean flow_peepshape ; flow_peepshape := false ; +boolean flow_arrowtip ; flow_arrowtip := true ; +boolean flow_dashline ; flow_dashline := false ; +boolean flow_forcevalid ; flow_forcevalid := false ; +boolean flow_touchshape ; flow_touchshape := false ; +boolean flow_showcrossing ; flow_showcrossing := false ; +boolean flow_reverse_y ; flow_reverse_y := true ; + +picture flow_dash_pattern ; flow_dash_pattern := nullpicture ; + +numeric flow_shape_node ; flow_shape_node := 0 ; +numeric flow_shape_action ; flow_shape_action := 24 ; +numeric flow_shape_procedure ; flow_shape_procedure := 5 ; +numeric flow_shape_product ; flow_shape_product := 12 ; +numeric flow_shape_decision ; flow_shape_decision := 14 ; +numeric flow_shape_archive ; flow_shape_archive := 19 ; +numeric flow_shape_loop ; flow_shape_loop := 35 ; +numeric flow_shape_wait ; flow_shape_wait := 6 ; +numeric flow_shape_subprocedure ; flow_shape_subprocedure := 20 ; +numeric flow_shape_singledocument ; flow_shape_singledocument := 32 ; +numeric flow_shape_multidocument ; flow_shape_multidocument := 33 ; +numeric flow_shape_right ; flow_shape_right := 66 ; +numeric flow_shape_left ; flow_shape_left := 67 ; +numeric flow_shape_up ; flow_shape_up := 68 ; +numeric flow_shape_down ; flow_shape_down := 69 ; + +numeric flow_label_offset ; flow_label_offset := 0 ; +numeric flow_exit_offset ; flow_exit_offset := 0 ; +numeric flow_comment_offset ; flow_comment_offset := 0 ; + +% vardef some_shape_path (expr type) == imported from mp-shap + +def flow_show_shapes(expr n) = + flow_begin_chart(n,8,10) ; + flow_show_con_points := true ; + for i=0 upto 7 : + for j=0 upto 9 : + flow_new_shape(i+1,j+1,i*10+j); + endfor ; + endfor ; + flow_end_chart ; +enddef ; + +%D connections + +def flow_new_chart = + + flow_grid_width := 60pt ; + flow_shape_width := 45pt ; + flow_grid_height := 40pt ; + flow_shape_height := 30pt ; + flow_chart_offset := 2pt ; + flow_chart_background_color := white ; + flow_show_mid_points := false ; + flow_show_con_points := false ; + flow_show_all_points := false ; + flow_shape_line_width := 2pt ; + flow_shape_line_color := .5white ; + flow_shape_fill_color := .9white ; + flow_connection_line_color := .2white ; + flow_connection_line_width := flow_shape_line_width ; + flow_connection_smooth_size := 5pt ; + flow_connection_arrow_size := 4pt ; + flow_connection_dash_size := 3pt ; + flow_label_offset := 0 ; + flow_exit_offset := 0 ; + flow_comment_offset := 0 ; + + flow_max_x := 6 ; + flow_max_y := 4 ; + + flow_smooth := true ; + flow_peepshape := false ; + flow_arrowtip := true ; + flow_dashline := false ; + flow_forcevalid := false ; + flow_touchshape := false ; + flow_showcrossing := false ; + flow_reverse_y := true ; + + flow_dash_pattern := nullpicture ; + + numeric flow_xypoint ; flow_xypoint := 0 ; + numeric flow_cpath ; flow_cpath := 0 ; + + pair flow_xypoints [] ; + boolean flow_xyfree [][] ; + path flow_xypath [][] ; + numeric flow_xysx [][] ; + numeric flow_xysy [][] ; + color flow_xyfill [][] ; + color flow_xydraw [][] ; + numeric flow_xyline [][] ; + boolean flow_xypeep [][] ; + picture flow_xytext [][] ; + picture flow_xylabel [][] ; + picture flow_xyexit [][] ; + picture flow_xycomment [][] ; + path flow_cpaths [] ; + numeric flow_cline [] ; + color flow_ccolor [] ; + boolean flow_carrow [] ; + boolean flow_cdash [] ; + boolean flow_ccross [] ; + picture flow_tpicture [][] ; + picture flow_bpicture [][] ; + picture flow_lpicture [][] ; + picture flow_rpicture [][] ; + path flow_connections[][][] ; + + predefined_shapes[61] := (fullcircle scaled (1.5*predefined_shapes_yradius) xscaled (flow_grid_height/flow_grid_width)) ; + predefined_shapes[62] := (fullcircle scaled (2.0*predefined_shapes_yradius) xscaled (flow_grid_height/flow_grid_width)) ; + +enddef ; + +flow_new_chart ; + +def flow_y_pos(expr y) = +% if flow_reverse_y : + flow_max_y + 1 - y +% else : +% y +% fi +enddef ; + +def flow_initialize_grid(expr maxx, maxy) = + flow_max_x := maxx ; + flow_max_y := maxy ; + flow_dsp_x := 0 ; + flow_dsp_y := 0 ; + for x=1 upto flow_max_x : + for y=1 upto flow_max_y : + flow_xyfree[x][y] := true ; + flow_xyfill[x][y] := flow_shape_fill_color ; + flow_xydraw[x][y] := flow_shape_line_color ; + flow_xyline[x][y] := flow_shape_line_width ; + endfor ; + endfor ; +enddef ; + +def flow_scaled_to_grid = + xscaled flow_grid_width yscaled flow_grid_height +enddef ; + +def flow_xy_offset(expr x, y) = + (x+.5,y+.5) +enddef ; + +def flow_draw_shape(expr x, yy, p, sx, sy) = + begingroup ; + save y ; numeric y ; + y := flow_y_pos(yy) ; + flow_xypath [x][y] := (p xscaled sx yscaled sy) shifted flow_xy_offset(x,y) ; + flow_xyfree [x][y] := false ; + flow_xysx [x][y] := sx ; + flow_xysy [x][y] := sy ; + flow_xyfill [x][y] := flow_shape_fill_color ; + flow_xydraw [x][y] := flow_shape_line_color ; + flow_xyline [x][y] := flow_shape_line_width ; + flow_xypeep [x][y] := flow_peepshape ; + endgroup ; +enddef ; + +vardef flow_i_point (expr x, y, p, t) = + begingroup ; + save q, ok ; pair q ; boolean ok ; + q := flow_xypath[x][y] intersection_point ((p) shifted flow_xy_offset(x,y)) ; + ok := true ; + if not ok : + message (t & " of shape (" & decimal x & "," & decimal y & ") limited") ; + fi ; + q + endgroup +enddef ; + +vardef flow_trimmed (expr x, y, z, t) = + if flow_touchshape and t : + flow_xyline[x][y]/z + else : + epsilon + fi +enddef ; + +numeric flow_zfactor ; flow_zfactor := 1/3 ; + +vardef flow_xy_bottom (expr x, y, z, t) = + flow_i_point(x, y, ((0,0)--(0,-2)) shifted (flow_zfactor*z*flow_xysx[x][y],0), "bottom") + shifted(0,-flow_trimmed(x,y,flow_grid_height,t)) +enddef ; + +vardef flow_xy_top (expr x, y, z, t) = + flow_i_point (x, y, ((0,0)--(0,2)) shifted (flow_zfactor*z*flow_xysx[x][y],0), "top") + shifted(0,flow_trimmed(x,y,flow_grid_height,t)) +enddef ; + +vardef flow_xy_left (expr x, y, z, t) = + flow_i_point (x, y, ((0,0)--(-2,0)) shifted (0,flow_zfactor*z*flow_xysy[x][y]), "left") + shifted(-flow_trimmed(x,y,flow_grid_width,t),0) +enddef ; + +vardef flow_xy_right (expr x, y, z, t) = + flow_i_point (x, y, ((0,0)--(2,0)) shifted (0,flow_zfactor*z*flow_xysy[x][y]), "right") + shifted(flow_trimmed(x,y,flow_grid_width,t),0) +enddef ; + +def flow_flush_shapes = + for x=1 upto flow_max_x : + for y=1 upto flow_max_y : + flow_flush_shape(x, y) ; + endfor ; + endfor ; +enddef ; + +def flow_flush_pictures = + for x=1 upto flow_max_x : + for y=1 upto flow_max_y : + flow_flush_picture(x, y) ; + endfor ; + endfor ; +enddef ; + +def flow_draw_connection_point(expr x, y, z) = + pickup pencircle scaled if (z=0): 2 fi flow_xyline[x][y] ; + drawdot flow_xy_bottom(x,y,z,false) flow_scaled_to_grid withcolor (1,0,0) ; + drawdot flow_xy_top (x,y,z,false) flow_scaled_to_grid withcolor (0,1,0) ; + drawdot flow_xy_left (x,y,z,false) flow_scaled_to_grid withcolor (0,0,1) ; + drawdot flow_xy_right (x,y,z,false) flow_scaled_to_grid withcolor (1,1,0) ; +enddef ; + +def flow_flush_shape(expr x, yy) = + begingroup ; + save y ; numeric y ; + y := flow_y_pos(yy) ; + if not flow_xyfree[x][y] : + pickup pencircle scaled flow_xyline[x][y] ; + if flow_xypeep[x][y] : + fill (flow_xypath[x][y] peepholed (unitsquare shifted (x,y))) + flow_scaled_to_grid withpen pencircle scaled 0 + withcolor flow_chart_background_color ; + else : + fill flow_xypath[x][y] flow_scaled_to_grid withcolor flow_xyfill[x][y] ; + fi ; + draw flow_xypath[x][y] flow_scaled_to_grid withcolor flow_xydraw[x][y] ; + if flow_show_con_points or flow_show_all_points : + flow_draw_connection_point(x, y, 0) ; + fi ; + if flow_show_all_points : + for i=-1 upto 1 : + flow_draw_connection_point(x, y, i) ; + endfor ; + fi ; + fi ; + endgroup ; +enddef ; + +vardef flow_points_initialized(expr xfrom, yfrom, xto, yto, n) = + if unknown flow_xyfree[xfrom][yfrom] or unknown flow_xyfree[xto][yto] : + flow_xypoint := 0 ; false + elseif not flow_xyfree[xfrom][yfrom] and not flow_xyfree[xto][yto] : + flow_xypoint := n ; true + else : + flow_xypoint := 0 ; false + fi +enddef ; + +def flow_collapse_points = % this can become a core macro + begingroup ; + % remove redundant points + save n ; numeric n ; + n := 1 ; + for i=2 upto flow_xypoint : + if not (flow_xypoints[i] = flow_xypoints[n]) : + n := n + 1 ; + flow_xypoints[n] := flow_xypoints[i] + fi ; + endfor ; + flow_xypoint := n ; + % make straight lines + if flow_xypoints[2] = flow_xypoints[flow_xypoint-1] : + flow_xypoints[3] := flow_xypoints[flow_xypoint] ; + flow_xypoint := 3 ; + fi ; + endgroup ; +enddef ; + +vardef flow_smooth_connection(expr a,b) = + if ypart a = ypart b : + a shifted ( if xpart a >= xpart b : - fi (flow_connection_smooth_size/flow_grid_width ),0) + else : + a shifted (0,if ypart a >= ypart b : - fi (flow_connection_smooth_size/flow_grid_height) ) + fi +enddef ; + +vardef flow_trim_points = + begingroup + save p, a, b, d, i ; numeric a, b ; path p ; pair d ; + p := for i=1 upto flow_xypoint-1 : flow_xypoints[i]-- endfor flow_xypoints[flow_xypoint] ; + if flow_touchshape : + a := flow_shape_line_width/flow_grid_width ; + b := flow_shape_line_width/flow_grid_height ; + else : + a := epsilon ; + b := epsilon ; + fi ; + d := direction infinity of p ; + flow_xypoints[flow_xypoint] := flow_xypoints[flow_xypoint] shifted + if xpart d < 0 : (+a,0) ; + elseif xpart d > 0 : (-a,0) ; + elseif ypart d < 0 : (0,+b) ; + elseif ypart d > 0 : (0,-b) ; + else : origin ; + fi ; + d := direction 0 of p ; + flow_xypoints[1] := flow_xypoints[1] shifted + if xpart d < 0 : (-a,0) ; + elseif xpart d > 0 : (+a,0) ; + elseif ypart d < 0 : (0,-b) ; + elseif ypart d > 0 : (0,+b) ; + else : origin ; + fi ; + endgroup +enddef ; + +vardef flow_trim_points = enddef ; + +vardef flow_connection_path = + if flow_reverse_connection : reverse fi (flow_xypoints[1] -- + for i=2 upto flow_xypoint-1 : + if flow_smooth : + flow_smooth_connection(flow_xypoints[i],flow_xypoints[i-1]) .. + controls flow_xypoints[i] and flow_xypoints[i] .. + flow_smooth_connection(flow_xypoints[i],flow_xypoints[i+1]) -- + else : + flow_xypoints[i] -- + fi + endfor + flow_xypoints[flow_xypoint]) +enddef ; + +def flow_draw_connection(expr i,xfrom,yfrom,xto,yto) = % 'i' is a comment reference + if flow_xypoint > 0 : + flow_collapse_points ; + flow_trim_points ; + flow_cpath := flow_cpath + 1 ; % maybe also store as x,y + flow_cpaths[flow_cpath] := flow_connection_path flow_scaled_to_grid ; + flow_cline[flow_cpath] := flow_connection_line_width ; + flow_ccolor[flow_cpath] := flow_connection_line_color ; + flow_carrow[flow_cpath] := flow_arrowtip ; + flow_cdash[flow_cpath] := flow_dashline ; + flow_ccross[flow_cpath] := flow_showcrossing ; + if flow_reverse_connection : + flow_connections[xto] [yto] [i] := flow_cpaths[flow_cpath] ; + else : + flow_connections[xfrom][yfrom][i] := flow_cpaths[flow_cpath] ; + fi ; + else : + message("no connection defined") ; + fi ; + flow_reverse_connection := false ; +enddef ; + +def flow_flush_connections = % protect locals + begingroup ; + save ip, crossing, cp ; numeric ip ; boolean crossing ; path cp ; + ahlength := flow_connection_arrow_size ; + flow_dash_pattern := dashpattern(on flow_connection_dash_size off flow_connection_dash_size) ; + for i=1 upto flow_cpath : + if flow_ccross[i] : + crossing := false ; + for j=1 upto i : + if not (point infinity of flow_cpaths[i] = point infinity of flow_cpaths[j]) : + ip := flow_cpaths[i] intersection_point flow_cpaths[j] ; + if intersection_found : crossing := true fi ; + fi ; + endfor ; + if crossing : + pickup pencircle scaled 2flow_cline[i] ; + cp := flow_cpaths[i] ; + cp := cp cutbefore point .05 length cp of cp ; + cp := cp cutafter point .95 length cp of cp ; + draw cp withcolor flow_chart_background_color ; + fi ; + fi ; + pickup pencircle scaled flow_cline[i] ; + if flow_carrow[i] : + if flow_cdash[i] : + drawarrow flow_cpaths[i] withcolor flow_ccolor[i] dashed flow_dash_pattern ; + else : + drawarrow flow_cpaths[i] withcolor flow_ccolor[i] ; + fi ; + else : + if flow_cdash[i] : + draw flow_cpaths[i] withcolor flow_ccolor[i] dashed flow_dash_pattern ; + else : + draw flow_cpaths[i] withcolor flow_ccolor[i] ; + fi ; + fi ; + flow_draw_midpoint(i) ; + endfor ; + endgroup ; +enddef ; + +def flow_draw_midpoint (expr n) = + begingroup + save p ; pair p ; + p := point .5*length(flow_cpaths[n]) of flow_cpaths[n]; + pickup pencircle scaled 2flow_cline[n] ; + if flow_show_mid_points : + drawdot p withcolor .7white ; + fi ; + endgroup ; +enddef ; + +def flow_flush_picture(expr x, yy) = + begingroup ; + save y ; numeric y ; + y := flow_y_pos(yy) ; % maybe move this to the makers + if known flow_xytext[x][y] : + draw flow_xytext[x][y] ; + fi ; + if known flow_xylabel[x][y] : + draw flow_xylabel[x][y] ; + fi ; + if known flow_xyexit[x][y] : + draw flow_xyexit[x][y] ; + fi ; + if known flow_xycomment[x][y] : + draw flow_xycomment[x][y] ; + fi ; + endgroup ; +enddef ; + +vardef flow_offset(expr x, y) = + flow_xy_offset((x+0.5)*flow_grid_width,(flow_max_y-y+1.5)*flow_grid_height) + shifted (-flow_xyline[x][y]/4,-flow_xyline[x][y]/4) % terrible hack (some compensation) +enddef ; + +def flow_chart_draw_text(expr x, y, p) = + if known flow_xytext[x][y] : + addto flow_xytext[x][y] also + else : + flow_xytext[x][y] := + fi + p shifted flow_offset(x,y) ; +enddef ; + +def flow_chart_draw_label (expr x, y, loc, txt) = + begingroup ; + save p, s ; path p ; picture s ; + p := fullsquare xscaled flow_grid_width yscaled flow_grid_height ; + p := p shifted flow_offset(x,y) ; + s := txt ; + setbounds s to boundingbox s enlarged flow_label_offset ; + if known flow_xylabel[x][y] : + addto flow_xylabel[x][y] also + else : + flow_xylabel[x][y] := + fi + if loc = "tr" : anchored.llft(s,0.5[ulcorner p,urcorner p]) ; + elseif loc = "t" : anchored.bot (s,0.5[ulcorner p,urcorner p]) ; + elseif loc = "tl" : anchored.lrt (s,0.5[ulcorner p,urcorner p]) ; + elseif loc = "br" : anchored.ulft(s,0.5[llcorner p,lrcorner p]) ; + elseif loc = "b" : anchored.top (s,0.5[llcorner p,lrcorner p]) ; + elseif loc = "bl" : anchored.urt (s,0.5[llcorner p,lrcorner p]) ; + elseif loc = "lb" : anchored.urt (s,0.5[ulcorner p,llcorner p]) ; + elseif loc = "l" : anchored.rt (s,0.5[ulcorner p,llcorner p]) ; + elseif loc = "lt" : anchored.lrt (s,0.5[ulcorner p,llcorner p]) ; + elseif loc = "rb" : anchored.ulft(s,0.5[urcorner p,lrcorner p]) ; + elseif loc = "r" : anchored.lft (s,0.5[urcorner p,lrcorner p]) ; + elseif loc = "rt" : anchored.llft(s,0.5[urcorner p,lrcorner p]) ; + else : anchored (s,center p) ; + fi ; + endgroup ; +enddef ; + +def flow_chart_draw_exit (expr x, y, loc, txt) = + begingroup ; + save p, s ; path p ; picture s ; + p := fullsquare xscaled flow_grid_width yscaled flow_grid_height ; + p := p shifted flow_offset(x,y) ; + s := txt ; + setbounds s to boundingbox s enlarged flow_exit_offset ; + if known flow_xyexit[x][y] : + addto flow_xyexit[x][y] also + else : + flow_xyexit[x][y] := + fi + if loc = "t" : anchored.top(s,0.5[ulcorner p,urcorner p]) ; + elseif loc = "b" : anchored.bot(s,0.5[llcorner p,lrcorner p]) ; + elseif loc = "l" : anchored.lft(s,0.5[ulcorner p,llcorner p]) ; + elseif loc = "r" : anchored.rt (s,0.5[urcorner p,lrcorner p]) ; + else : anchored (s,center p) ; + fi ; + endgroup ; +enddef ; + +def flow_chart_draw_comment (expr x, y, i, loc, len, txt) = % per connection + begingroup ; + if known flow_connections[x][y][i] : + save p, q, s ; path p, q ; picture s ; + p := fullsquare xscaled flow_shape_width yscaled flow_shape_height ; + p := p shifted flow_offset(x,y) ; + q := flow_connections[x][y][i] ; % already relocated + s := txt ; + setbounds s to boundingbox s enlarged flow_comment_offset ; + if known flow_xycomment[x][y] : + addto flow_xycomment[x][y] also + else : + flow_xycomment[x][y] := + fi + if loc = "tr" : anchored.llft(s,if len = 0 : 0.5[ulcorner p,urcorner p] else : point len along q fi) ; + elseif loc = "t" : anchored.bot (s,if len = 0 : 0.5[ulcorner p,urcorner p] else : point len along q fi) ; + elseif loc = "tl" : anchored.lrt (s,if len = 0 : 0.5[ulcorner p,urcorner p] else : point len along q fi) ; + elseif loc = "br" : anchored.ulft(s,if len = 0 : 0.5[llcorner p,lrcorner p] else : point len along q fi) ; + elseif loc = "b" : anchored.top (s,if len = 0 : 0.5[llcorner p,lrcorner p] else : point len along q fi) ; + elseif loc = "bl" : anchored.urt (s,if len = 0 : 0.5[llcorner p,lrcorner p] else : point len along q fi) ; + elseif loc = "lb" : anchored.urt (s,if len = 0 : 0.5[ulcorner p,llcorner p] else : point len along q fi) ; + elseif loc = "l" : anchored.rt (s,if len = 0 : 0.5[ulcorner p,llcorner p] else : point len along q fi) ; + elseif loc = "lt" : anchored.lrt (s,if len = 0 : 0.5[ulcorner p,llcorner p] else : point len along q fi) ; + elseif loc = "rb" : anchored.ulft(s,if len = 0 : 0.5[urcorner p,lrcorner p] else : point len along q fi) ; + elseif loc = "r" : anchored.lft (s,if len = 0 : 0.5[urcorner p,lrcorner p] else : point len along q fi) ; + elseif loc = "rt" : anchored.llft(s,if len = 0 : 0.5[urcorner p,lrcorner p] else : point len along q fi) ; + elseif loc = "tr:*" : anchored.llft(s,point 0 of q) ; + elseif loc = "t:*" : anchored.bot (s,point 0 of q) ; + elseif loc = "tl:*" : anchored.lrt (s,point 0 of q) ; + elseif loc = "br:*" : anchored.ulft(s,point 0 of q) ; + elseif loc = "b:*" : anchored.top (s,point 0 of q) ; + elseif loc = "bl:*" : anchored.urt (s,point 0 of q) ; + elseif loc = "lb:*" : anchored.urt (s,point 0 of q) ; + elseif loc = "l:*" : anchored.rt (s,point 0 of q) ; + elseif loc = "lt:*" : anchored.lrt (s,point 0 of q) ; + elseif loc = "rb:*" : anchored.ulft(s,point 0 of q) ; + elseif loc = "r:*" : anchored.lft (s,point 0 of q) ; + elseif loc = "rt:*" : anchored.llft(s,point 0 of q) ; + else : anchored (s,point 0 of q) ; + fi ; + fi ; + endgroup ; +enddef ; + +boolean flow_reverse_connection ; flow_reverse_connection := false ; + +vardef flow_up_on_grid (expr n) = + (xpart flow_xypoints[n],(ypart flow_xypoints[n]+1) div 1) +enddef ; + +vardef flow_down_on_grid (expr n) = + (xpart flow_xypoints[n],(ypart flow_xypoints[n]) div 1) +enddef ; + +vardef flow_left_on_grid (expr n) = + ((xpart flow_xypoints[n]) div 1, ypart flow_xypoints[n]) +enddef ; + +vardef flow_right_on_grid (expr n) = + ((xpart flow_xypoints[n]+1) div 1, ypart flow_xypoints[n]) +enddef ; + +vardef flow_x_on_grid (expr n, xfrom, xto, zfrom) = + if (xfrom = xto) and not (zfrom = 0) : + if (zfrom=1) : flow_right_on_grid(2) else : flow_left_on_grid(2) fi + elseif xpart flow_xypoints[1] < xpart flow_xypoints[6] : + flow_right_on_grid(n) + else : + flow_left_on_grid(n) + fi +enddef ; + +vardef flow_y_on_grid (expr n, yfrom, yto, zfrom) = + if (yfrom = yto) and not (zfrom = 0) : + if (zfrom = 1) : flow_up_on_grid(2) else : flow_down_on_grid(2) fi + elseif ypart flow_xypoints[1] < ypart flow_xypoints[6] : + flow_up_on_grid(n) + else : + flow_down_on_grid(n) + fi +enddef ; + +vardef flow_xy_on_grid (expr n, m) = + (xpart flow_xypoints[n], ypart flow_xypoints[m]) +enddef ; + +vardef flow_down_to_grid (expr a,b) = + (xpart flow_xypoints[a], ypart flow_xypoints[if ypart flow_xypoints[a]<ypart flow_xypoints[b] : a else : b fi]) +enddef ; + +vardef flow_up_to_grid (expr a,b) = + (xpart flow_xypoints[a], ypart flow_xypoints[if ypart flow_xypoints[a]>ypart flow_xypoints[b] : a else : b fi]) +enddef ; + +vardef flow_left_to_grid (expr a,b) = + (xpart flow_xypoints[if xpart flow_xypoints[a]<xpart flow_xypoints[b] : a else : b fi], ypart flow_xypoints[a]) +enddef ; + +vardef flow_right_to_grid (expr a,b) = + (xpart flow_xypoints[if xpart flow_xypoints[a]>xpart flow_xypoints[b] : a else : b fi], ypart flow_xypoints[a]) +enddef ; + +vardef flow_valid_connection (expr xfrom, yfrom, xto, yto) = + begingroup ; + save ok, vc, pp ; boolean ok ; pair vc ; path pp ; + save flow_xyfirst, flow_xylast ; pair flow_xyfirst, flow_xylast ; + % check for slanted lines + ok := true ; + for i=1 upto flow_xypoint-1 : + if not ((xpart flow_xypoints[i]=xpart flow_xypoints[i+1]) or (ypart flow_xypoints[i]=ypart flow_xypoints[i+1])) : + ok := false ; + fi ; + endfor ; + if not ok : + % message("slanted"); + false + elseif flow_forcevalid : + % message("force"); + true + elseif (xfrom=xto) and (yfrom=yto) : + % message("self"); + false + else : + % check for crossing shapes + flow_xyfirst := flow_xypoints[1] ; + flow_xylast := flow_xypoints[flow_xypoint] ; + flow_trim_points ; + pp := for i=1 upto flow_xypoint-1 : flow_xypoints[i]-- endfor flow_xypoints[flow_xypoint] ; + flow_xypoints[1] := flow_xyfirst ; + flow_xypoints[flow_xypoint] := flow_xylast ; + for i=1 upto flow_max_x : + for j=1 upto flow_max_y : % was bug: xfrom,yto + if not ( ( (i,j)=(xfrom,yfrom) ) or ( (i,j)=(xto,yto) ) ) : + if not flow_xyfree[i][j] : + vc := pp intersection_point flow_xypath[i][j] ; + if intersection_found : + ok := false + fi ; + fi ; + fi ; + endfor ; + endfor ; + % if not ok: message("crossing") ; fi ; + ok + fi + endgroup +enddef ; + +def flow_connect_top_bottom (expr n) (expr xfrom, yyfrom, zfrom) (expr xto, yyto, zto) = + yfrom := flow_y_pos(yyfrom) ; + yto := flow_y_pos(yyto) ; + if flow_points_initialized(xfrom,yfrom,xto,yto,6) : + flow_xypoints[1] := flow_xy_top(xfrom,yfrom,zfrom,true) ; + flow_xypoints[6] := flow_xy_bottom(xto,yto,zto,true) ; + flow_xypoints[2] := flow_up_on_grid(1) ; + flow_xypoints[5] := flow_down_on_grid(6) ; + flow_xypoints[3] := flow_up_to_grid(2,5) ; + flow_xypoints[4] := flow_up_to_grid(2,5) ; + if not flow_valid_connection(xfrom,yfrom,xto,yto) : + flow_xypoints[3] := flow_x_on_grid(2,xfrom,xto,zfrom) ; + flow_xypoints[4] := flow_xy_on_grid(3,5) ; + fi ; + %%%% begin experiment + flow_xypoints[3] := flow_xypoints[3] shifted (flow_dsp_x,0) ; + flow_xypoints[4] := flow_xypoints[4] shifted (flow_dsp_x,0) ; + if flow_dsp_y>0 : + flow_xypoints[2] := flow_xypoints[2] shifted (0,flow_dsp_y) ; + flow_xypoints[3] := flow_xypoints[3] shifted (0,flow_dsp_y) ; + elseif flow_dsp_y<0 : + flow_xypoints[4] := flow_xypoints[4] shifted (0,flow_dsp_y) ; + flow_xypoints[5] := flow_xypoints[5] shifted (0,flow_dsp_y) ; + fi + %%%% end experiment + flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; + fi ; +enddef ; + +def flow_connect_left_right (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := flow_y_pos(yyfrom) ; + yto := flow_y_pos(yyto) ; + if flow_points_initialized(xfrom,yfrom,xto,yto,6) : + flow_xypoints[1] := flow_xy_left(xfrom,yfrom,zfrom,true) ; + flow_xypoints[6] := flow_xy_right(xto,yto,zto,true) ; + flow_xypoints[2] := flow_left_on_grid(1) ; + flow_xypoints[5] := flow_right_on_grid(6) ; + flow_xypoints[3] := flow_left_to_grid(2,5) ; + flow_xypoints[4] := flow_left_to_grid(2,5) ; + if not flow_valid_connection(xfrom,yfrom,xto,yto) : + flow_xypoints[3] := flow_y_on_grid(2,yfrom,yto,zfrom) ; + flow_xypoints[4] := flow_xy_on_grid(5,3) ; + fi ; + %%%% begin experiment + if flow_dsp_y <> 0 : + flow_xypoints[3] := flow_xypoints[3] shifted (0,-flow_dsp_y) ; + flow_xypoints[4] := flow_xypoints[4] shifted (0,-flow_dsp_y) ; + fi ; + %%%% end experiment + flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; + fi ; +enddef ; + +def flow_connect_left_top (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := flow_y_pos(yyfrom) ; + yto := flow_y_pos(yyto) ; + if flow_points_initialized(xfrom,yfrom,xto,yto,5) : + flow_xypoints[1] := flow_xy_left(xfrom,yfrom,zfrom,true) ; + flow_xypoints[5] := flow_xy_top(xto,yto,zto,true) ; + flow_xypoints[2] := flow_left_on_grid(1) ; + flow_xypoints[4] := flow_up_on_grid(5) ; + flow_xypoints[3] := flow_left_to_grid(2,5) ; + if not flow_valid_connection(xfrom,yfrom,xto,yto) : + flow_xypoints[3] := flow_xy_on_grid(2,4) ; + fi ; + flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; + fi ; +enddef ; + +def flow_connect_left_bottom (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := flow_y_pos(yyfrom) ; + yto := flow_y_pos(yyto) ; + if flow_points_initialized(xfrom,yfrom,xto,yto,5) : + flow_xypoints[1] := flow_xy_left(xfrom,yfrom,zfrom,true) ; + flow_xypoints[5] := flow_xy_bottom(xto,yto,zto,true) ; + flow_xypoints[2] := flow_left_on_grid(1) ; + flow_xypoints[4] := flow_down_on_grid(5) ; + flow_xypoints[3] := flow_left_to_grid(2,5) ; + if not flow_valid_connection(xfrom,yfrom,xto,yto) : + flow_xypoints[3] := flow_xy_on_grid(2,4) ; + fi ; + flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; + fi ; +enddef ; + +def flow_connect_right_top (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := flow_y_pos(yyfrom) ; + yto := flow_y_pos(yyto) ; + if flow_points_initialized(xfrom,yfrom,xto,yto,5) : + flow_xypoints[1] := flow_xy_right(xfrom,yfrom,zfrom,true) ; + flow_xypoints[5] := flow_xy_top(xto,yto,zto,true) ; + flow_xypoints[2] := flow_right_on_grid(1) ; + flow_xypoints[4] := flow_up_on_grid(5) ; + flow_xypoints[3] := flow_right_to_grid(2,5) ; + if not flow_valid_connection(xfrom,yfrom,xto,yto) : + flow_xypoints[3] := flow_xy_on_grid(2,4) ; + fi ; + flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; + fi ; +enddef ; + +def flow_connect_right_bottom (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := flow_y_pos(yyfrom) ; + yto := flow_y_pos(yyto) ; + if flow_points_initialized(xfrom,yfrom,xto,yto,5) : + flow_xypoints[1] := flow_xy_right(xfrom,yfrom,zfrom,true) ; + flow_xypoints[5] := flow_xy_bottom(xto,yto,zto,true) ; + flow_xypoints[2] := flow_right_on_grid(1) ; + flow_xypoints[4] := flow_down_on_grid(5) ; + flow_xypoints[3] := flow_right_to_grid(2,5) ; + if not flow_valid_connection(xfrom,yfrom,xto,yto) : + flow_xypoints[3] := flow_xy_on_grid(2,4) ; + fi ; + %%%% begin experiment + flow_xypoints[2] := flow_xypoints[2] shifted (flow_dsp_x,0) ; + flow_xypoints[3] := flow_xypoints[3] shifted (flow_dsp_x,0) ; + if flow_dsp_y>0 : + flow_xypoints[3] := flow_xypoints[3] shifted (0,-flow_dsp_y) ; + flow_xypoints[4] := flow_xypoints[4] shifted (0,-flow_dsp_y) ; + elseif flow_dsp_y<0 : + flow_xypoints[3] := flow_xypoints[3] shifted (0,flow_dsp_y) ; + flow_xypoints[4] := flow_xypoints[4] shifted (0,flow_dsp_y) ; + fi + %%%% end experiment + flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; + fi ; +enddef ; + +def flow_connect_left_left (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := flow_y_pos(yyfrom) ; + yto := flow_y_pos(yyto) ; + if flow_points_initialized(xfrom,yfrom,xto,yto,6) : + flow_xypoints[1] := flow_xy_left(xfrom,yfrom,zfrom,true) ; + flow_xypoints[6] := flow_xy_left(xto,yto,zto,true) ; + flow_xypoints[2] := flow_left_on_grid(1) ; + flow_xypoints[5] := flow_left_on_grid(6) ; + flow_xypoints[3] := flow_left_to_grid(2,5) ; + flow_xypoints[4] := flow_left_to_grid(5,2) ; + if not flow_valid_connection(xfrom,yfrom,xto,yto) : + flow_xypoints[3] := flow_y_on_grid(2,yfrom,yto,zfrom) ; + flow_xypoints[4] := flow_xy_on_grid(5,3) ; + fi ; + flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; + fi ; +enddef ; + +def flow_connect_right_right (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := flow_y_pos(yyfrom) ; + yto := flow_y_pos(yyto) ; + if flow_points_initialized(xfrom,yfrom,xto,yto,6) : + flow_xypoints[1] := flow_xy_right(xfrom,yfrom,zfrom,true) ; + flow_xypoints[6] := flow_xy_right(xto,yto,zto,true) ; + flow_xypoints[2] := flow_right_on_grid(1) ; + flow_xypoints[5] := flow_right_on_grid(6) ; + flow_xypoints[3] := flow_right_to_grid(2,5) ; + flow_xypoints[4] := flow_right_to_grid(5,2) ; + if not flow_valid_connection(xfrom,yfrom,xto,yto) : + flow_xypoints[3] := flow_y_on_grid(2,yfrom,yto,zfrom) ; + flow_xypoints[4] := flow_xy_on_grid(5,3) ; + fi ; + flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; + fi ; +enddef ; + +def flow_connect_top_top (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := flow_y_pos(yyfrom) ; + yto := flow_y_pos(yyto) ; + if flow_points_initialized(xfrom,yfrom,xto,yto,6) : + flow_xypoints[1] := flow_xy_top(xfrom,yfrom,zfrom,true) ; + flow_xypoints[6] := flow_xy_top(xto,yto,zto,true) ; + flow_xypoints[2] := flow_up_on_grid(1) ; + flow_xypoints[5] := flow_up_on_grid(6) ; + flow_xypoints[3] := flow_up_to_grid(2,5) ; + flow_xypoints[4] := flow_up_to_grid(5,2) ; + if not flow_valid_connection(xfrom,yfrom,xto,yto) : + flow_xypoints[3] := flow_x_on_grid(2,xfrom,xto,zfrom) ; + flow_xypoints[4] := flow_xy_on_grid(3,5) ; + fi ; + %%%% begin experiment (todo: not value but just + and ) + if flow_dsp_y <> 0 : + flow_xypoints[2] := flow_xypoints[2] shifted (0,flow_dsp_y) ; + flow_xypoints[3] := flow_xypoints[3] shifted (0,flow_dsp_y) ; + flow_xypoints[4] := flow_xypoints[4] shifted (0,flow_dsp_y) ; + flow_xypoints[5] := flow_xypoints[5] shifted (0,flow_dsp_y) ; + fi ; + %%%% end experiment + flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; + fi ; +enddef ; + +def flow_connect_bottom_bottom (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := flow_y_pos(yyfrom) ; + yto := flow_y_pos(yyto) ; + if flow_points_initialized(xfrom,yfrom,xto,yto,6) : + flow_xypoints[1] := flow_xy_bottom(xfrom,yfrom,zfrom,true) ; + flow_xypoints[6] := flow_xy_bottom(xto,yto,zto,true) ; + flow_xypoints[2] := flow_down_on_grid(1) ; + flow_xypoints[5] := flow_down_on_grid(6) ; + flow_xypoints[3] := flow_down_to_grid(2,5) ; + flow_xypoints[4] := flow_down_to_grid(5,2) ; + if not flow_valid_connection(xfrom,yfrom,xto,yto) : + flow_xypoints[3] := flow_x_on_grid(2,xfrom,xto,zfrom) ; + flow_xypoints[4] := flow_xy_on_grid(3,5) ; + fi ; + %%%% begin experiment + flow_xypoints[3] := flow_xypoints[3] shifted (flow_dsp_x,0) ; + flow_xypoints[4] := flow_xypoints[4] shifted (flow_dsp_x,0) ; + if flow_dsp_y<0 : + flow_xypoints[2] := flow_xypoints[2] shifted (0,-flow_dsp_y) ; + flow_xypoints[3] := flow_xypoints[3] shifted (0,-flow_dsp_y) ; + elseif flow_dsp_y>0 : + flow_xypoints[4] := flow_xypoints[4] shifted (0,flow_dsp_y) ; + flow_xypoints[5] := flow_xypoints[5] shifted (0,flow_dsp_y) ; + fi + %%%% end experiment + flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; + fi ; +enddef ; + +def flow_connect_bottom_top (expr n) (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = + flow_reverse_connection := true ; + flow_connect_top_bottom (n) (xto,yto,zto) (xfrom,yfrom,zfrom) ; +enddef ; + +def flow_connect_right_left (expr n) (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = + flow_reverse_connection := true ; + flow_connect_left_right (n) (xto,yto,zto) (xfrom,yfrom,zfrom) ; +enddef ; + +def flow_connect_top_left (expr n) (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = + flow_reverse_connection := true ; + flow_connect_left_top (n) (xto,yto,zto) (xfrom,yfrom,zfrom) ; +enddef ; + +def flow_connect_bottom_left (expr n) (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = + flow_reverse_connection := true ; + flow_connect_left_bottom (n) (xto,yto,zto) (xfrom,yfrom,zfrom) ; +enddef ; + +def flow_connect_top_right (expr n) (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = + flow_reverse_connection := true ; + flow_connect_right_top (n) (xto,yto,zto) (xfrom,yfrom,zfrom) ; +enddef ; + +def flow_connect_bottom_right (expr n) (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = + flow_reverse_connection := true ; + flow_connect_right_bottom (n) (xto,yto,zto) (xfrom,yfrom,zfrom) ; +enddef ; + +def flow_draw_test_shape(expr x, y) = + flow_draw_shape(x,y,fullcircle, .7, .7) ; +enddef ; + +def flow_draw_test_shapes = + for i=1 upto flow_max_x : + for j=1 upto flow_max_y : + flow_draw_test_shape(i,j) ; + endfor ; + endfor ; +enddef; + +def flow_draw_test_area = + pickup pencircle scaled .5flow_shape_line_width ; + draw (unitsquare xscaled flow_max_x yscaled flow_max_y shifted (1,1)) flow_scaled_to_grid withcolor blue ; +enddef ; + +def flow_show_connection(expr n, m) = + + flow_begin_chart(100+n,6,6) ; + + flow_draw_test_area ; + + flow_smooth := true ; + flow_arrowtip := true ; + flow_dashline := true ; + + flow_draw_test_shape(2,2) ; flow_draw_test_shape(4,5) ; + flow_draw_test_shape(3,3) ; flow_draw_test_shape(5,1) ; + flow_draw_test_shape(2,5) ; flow_draw_test_shape(1,3) ; + flow_draw_test_shape(6,2) ; flow_draw_test_shape(4,6) ; + + if (m=1) : + flow_connect_top_bottom (0) (2,2,0) (4,5,0) ; + flow_connect_top_bottom (0) (3,3,0) (5,1,0) ; + flow_connect_top_bottom (0) (2,5,0) (1,3,0) ; + flow_connect_top_bottom (0) (6,2,0) (4,6,0) ; + elseif (m=2) : + flow_connect_top_top (0) (2,2,0) (4,5,0) ; + flow_connect_top_top (0) (3,3,0) (5,1,0) ; + flow_connect_top_top (0) (2,5,0) (1,3,0) ; + flow_connect_top_top (0) (6,2,0) (4,6,0) ; + elseif (m=3) : + flow_connect_bottom_bottom (0) (2,2,0) (4,5,0) ; + flow_connect_bottom_bottom (0) (3,3,0) (5,1,0) ; + flow_connect_bottom_bottom (0) (2,5,0) (1,3,0) ; + flow_connect_bottom_bottom (0) (6,2,0) (4,6,0) ; + elseif (m=4) : + flow_connect_left_right (0) (2,2,0) (4,5,0) ; + flow_connect_left_right (0) (3,3,0) (5,1,0) ; + flow_connect_left_right (0) (2,5,0) (1,3,0) ; + flow_connect_left_right (0) (6,2,0) (4,6,0) ; + elseif (m=5) : + flow_connect_left_left (0) (2,2,0) (4,5,0) ; + flow_connect_left_left (0) (3,3,0) (5,1,0) ; + flow_connect_left_left (0) (2,5,0) (1,3,0) ; + flow_connect_left_left (0) (6,2,0) (4,6,0) ; + elseif (m=6) : + flow_connect_right_right (0) (2,2,0) (4,5,0) ; + flow_connect_right_right (0) (3,3,0) (5,1,0) ; + flow_connect_right_right (0) (2,5,0) (1,3,0) ; + flow_connect_right_right (0) (6,2,0) (4,6,0) ; + elseif (m=7) : + flow_connect_left_top (0) (2,2,0) (4,5,0) ; + flow_connect_left_top (0) (3,3,0) (5,1,0) ; + flow_connect_left_top (0) (2,5,0) (1,3,0) ; + flow_connect_left_top (0) (6,2,0) (4,6,0) ; + elseif (m=8) : + flow_connect_left_bottom (0) (2,2,0) (4,5,0) ; + flow_connect_left_bottom (0) (3,3,0) (5,1,0) ; + flow_connect_left_bottom (0) (2,5,0) (1,3,0) ; + flow_connect_left_bottom (0) (6,2,0) (4,6,0) ; + elseif (m=9) : + flow_connect_right_top (0) (2,2,0) (4,5,0) ; + flow_connect_right_top (0) (3,3,0) (5,1,0) ; + flow_connect_right_top (0) (2,5,0) (1,3,0) ; + flow_connect_right_top (0) (6,2,0) (4,6,0) ; + else : + flow_connect_right_bottom (0) (2,2,0) (4,5,0) ; + flow_connect_right_bottom (0) (3,3,0) (5,1,0) ; + flow_connect_right_bottom (0) (2,5,0) (1,3,0) ; + flow_connect_right_bottom (0) (6,2,0) (4,6,0) ; + fi ; + + flow_end_chart ; + +enddef ; + +def flow_show_connections = + for f=1 upto 10 : + flow_show_connection(f,f) ; + endfor ; +enddef ; + +%D charts + +def flow_clip_chart(expr minx, miny, maxx, maxy) = + flow_cmin_x := minx ; + flow_cmax_x := maxx ; + flow_cmin_y := miny ; + flow_cmax_y := maxy ; +enddef ; + +def flow_begin_chart(expr n, maxx, maxy) = + flow_new_chart ; + flow_chart_figure := n ; + flow_chart_scale := 1 ; + if flow_chart_figure>0: + beginfig(flow_chart_figure) ; + fi ; + flow_initialize_grid (maxx, maxy) ; + bboxmargin := 0 ; + flow_cmin_x := 1 ; + flow_cmax_x := maxx ; + flow_cmin_y := 1 ; + flow_cmax_y := maxy ; +enddef ; + +def flow_end_chart = + begingroup ; + save p ; path p ; + flow_flush_shapes ; + flow_flush_connections ; + flow_flush_pictures ; + flow_cmin_x := flow_cmin_x ; + flow_cmax_x := flow_cmin_x+flow_cmax_x ; + flow_cmin_y := flow_cmin_y-1 ; + flow_cmax_y := flow_cmin_y+flow_cmax_y ; + if flow_reverse_y : + flow_cmin_y := flow_y_pos(flow_cmin_y) ; + flow_cmax_y := flow_y_pos(flow_cmax_y) ; + fi ; + p := (((flow_cmin_x,flow_cmin_y)--(flow_cmax_x,flow_cmin_y)-- + (flow_cmax_x,flow_cmax_y)--(flow_cmin_x,flow_cmax_y)--cycle)) + flow_scaled_to_grid ; + %draw p withcolor red ; + p := p enlarged flow_chart_offset ; + clip currentpicture to p ; + setbounds currentpicture to p ; + endgroup ; + currentpicture := currentpicture scaled flow_chart_scale ; + if flow_chart_figure>0: + endfig ; + fi ; +enddef ; + +def flow_new_shape(expr x, y, n) = + if known n : + if (x>0) and (x<=flow_max_x) and (y>0) and (y<=flow_max_y) : + flow_draw_shape(x,y,some_shape_path(n), flow_shape_width/flow_grid_width, flow_shape_height/flow_grid_height) ; + else : + message ("shape outside grid ignored") ; + fi ; + else : + message ("shape not known" ) ; + fi ; +enddef ; + +def flow_begin_sub_chart = + begingroup ; + save flow_shape_line_width, flow_connection_line_width ; + save flow_shape_line_color, flow_shape_fill_color, flow_connection_line_color ; + color flow_shape_line_color, flow_shape_fill_color, flow_connection_line_color ; + save flow_smooth, flow_arrowtip, flow_dashline, flow_peepshape ; + boolean flow_smooth, flow_arrowtip, flow_dashline, flow_peepshape ; +enddef ; + +def flow_end_sub_chart = + endgroup ; +enddef ; + diff --git a/metapost/context/base/mpiv/mp-chem.mpiv b/metapost/context/base/mpiv/mp-chem.mpiv new file mode 100644 index 000000000..b861d3f12 --- /dev/null +++ b/metapost/context/base/mpiv/mp-chem.mpiv @@ -0,0 +1,1731 @@ +%D \module +%D [ file=mp-chem.mpiv, +%D version=2009.05.13, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=chemicals, +%D author=Hans Hagen \& Alan Braslau, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +%D This module is incomplete and experimental. Okay, it's not that bad but we do need +%D some disclaimer. + +% either consistent setting or not + +if known context_chem : endinput ; fi ; + +boolean context_chem ; context_chem := true ; + +numeric + chem_num[], % scratch + chem_text_min, chem_text_max, + chem_rotation, chem_adjacent, chem_stack_n, + chem_substituent, chem_substituent.lft, chem_substituent.rt, + chem_setting_offset, chem_text_offset, + chem_center_offset, chem_dbl_offset, + chem_bb_angle, chem_axis_rulethickness, + chem_setting_l, chem_setting_r, chem_setting_t, chem_setting_b, + chem_setting_rotation, chem_emwidth, chem_b_length, + chem_front_b[] ; + +boolean + chem_setting_axis, + chem_doing_pb, chem_bd_wedge, + chem_star[], chem_front[], chem_stacked[], chem_tetra[] ; + +string + chem_previous ; + +path + chem_path[], % scratch + chem_b_path[], chem_c_path[], + chem_r_path[], chem_r_path.lft[], chem_r_path.rt[] ; + +pair + chem_origin, chem_mirror, + chem_pair[], % scratch + chem_sb_pair, chem_sb_pair.m, chem_sb_pair.p, chem_sb_pair.b ; + +picture + chem_pic, % scratch + % The use of dashpattern is found to dot the starting point with chem_sb_dash.m... + %chem_sb_dash, chem_sb_dash.m, chem_sb_dash.p, chem_sb_dash.b, + chem_axis_color ; + +transform + chem_t ; % scratch + +color lightblue ; lightblue := (173/255,216/255,230/255) ; + +% debugging + +boolean chem_trace_nesting ; chem_trace_nesting := false ; +boolean chem_trace_text ; chem_trace_text := false ; +boolean chem_trace_boundingbox ; chem_trace_boundingbox := false ; + +chem_axis_color := image(draw origin withcolor lightblue) ; +chem_setting_axis := false ; +chem_axis_rulethickness := 1pt ; +chem_emwidth := 10pt ; % EmWidth or \the\emwidth does not work... +chem_b_length := 3 chem_emwidth ; +chem_text_offset := -.3chem_emwidth ; % -.71chem_emwidth ; % 1/sqrt(2) +chem_center_offset := .5chem_emwidth ; +chem_dbl_offset := .05 ; +chem_bb_angle := angle(1,2chem_dbl_offset) ; +chem_text_min := 0.75 ; +chem_text_max := 1.25 ; +chem_dot_factor := 2 ; % *linewidth +chem_sb_pair := (0.25,0.75) ; %chem_sb_dash := dashpattern(off 0.25 on 0.5 off 0.25) ; +chem_sb_pair.m := (0.25,1 ) ; %chem_sb_dash.m := dashpattern(off 0.25 on 0.75) ; +chem_sb_pair.p := (0 ,0.75) ; %chem_sb_dash.p := dashpattern(on 0.75 off 0.25) ; +chem_sb_pair.b := (0 ,1 ) ; %chem_sb_dash.b := dashpattern(on 1) ; + +chem_bd_wedge := true ; % according to IUPAC 2005 + +def chem_reset = + chem_rotation := 0 ; + chem_mirror := origin ; + chem_adjacent := 0 ; + chem_substituent := 0 ; + chem_substituent.lft := 0 ; + chem_substituent.rt := 0 ; + chem_stack_n := 0 ; + chem_doing_pb := false ; + chem_origin := origin ; + chem_previous := "one" ; + pair chem_mark_pair[] ; +enddef ; + +chem_reset ; + +newinternal numeric + one, carbon, alkyl, newmanstagger, newmaneclipsed, + three, four, five, six, seven, eight, nine, + fivefront, sixfront, chair, boat ; + +vardef chem_init_some (suffix $) (expr e) = + if not known chem_star[$] : chem_star[$] := false ; fi + if not known chem_front[$] : chem_front[$] := false ; fi + if not known chem_stacked[$] : chem_stacked[$] := false ; fi + if not known chem_tetra[$] : chem_tetra[$] := false ; fi + + % We define all paths as closed, so that they may be indexed mod length. + if path(e) : + chem_b_path[$] := e if not cycle(e) : -- cycle fi ; + chem_num0 := length(chem_b_path[$]) ; + else : % polygon + chem_num0 := e ; + chem_num1 := 360/chem_num0 ; + chem_b_path[$] := + ( + for i=0 upto chem_num0-1 : + dir(if chem_star[$] : -i else : (.5-i) fi *chem_num1) -- + endfor + cycle + ) + if chem_front[$] : + rotated (chem_num1-90) + fi + if not chem_star[$] : + scaled (.5/(sind .5chem_num1)) + % carbon-carbon benzene bond length + scaled (1.4/1.54) + fi ; + fi ; + + if chem_front[$] and (not known chem_front_b[$]) : + chem_front_b[$] := floor(.5(length chem_b_path[$])) + 1 ; + fi + + chem_num2 := 0 ; + chem_c_path[$] := + reverse(fullcircle) rotated angle(point 0 of chem_b_path[$]) + if not chem_star[$] : + hide (for i=0 upto chem_num0-1: + if abs(point i+.5 of chem_b_path[$]) < + abs(point chem_num2+.5 of chem_b_path[$]) : + chem_num2 := i ; + fi + endfor) + scaled (2*(abs(point chem_num2+.5 of chem_b_path[$]) - 2chem_dbl_offset)) + fi ; + + chem_r_path[$] := + if chem_star[$] : + chem_b_path[$] + else : + ( + for i=0 upto chem_num0-1 : + (unitvector point i of chem_b_path[$]) + shifted point i of chem_b_path[$] -- + endfor + cycle + ) + fi ; + + chem_r_path.lft[$] := + ( + for i=0 upto chem_num0-1 : + if chem_front[$] : + up + scaled .5 + shifted point i of chem_b_path[$] + elseif chem_star[$] : + point i of chem_b_path[$] + else : + point i+1 of chem_b_path[$] + rotatedabout(point i of chem_b_path[$],180) + fi -- + endfor + cycle + ) ; + chem_r_path.rt[$] := + ( + for i=0 upto chem_num0-1 : + if chem_front[$] : + down + scaled .5 + shifted point i of chem_b_path[$] + elseif chem_star[$] : + point i+2 of chem_b_path[$] + else : + point i-1 of chem_b_path[$] + rotatedabout(point i of chem_b_path[$],180) + fi -- + endfor + cycle + ) ; + +enddef ; + +% The following is used only once: +def chem_init_all = +begingroup + save a, b, c, d, e ; numeric a, b, c, d, e ; + save lft, rt ; path lft, rt ; + + % tetrahedrial angle + a := 2angle(1,sqrt 2) ; + + % solve for chair + 2b = 180 - .5a ; + 4c = 180 - .5a ; + d + e = 360 - 2a ; + d = 5e ; % this is the one tunable parameter which fixes the perspective. + z2 = z1 shifted dir(90+a+d) ; + z3 = z2 shifted dir(270-a) ; + z4 = z3 shifted dir(90+a) ; + z6 = z1 shifted dir(90+a) ; + z5 = z6 shifted dir(270-a) ; + z4 = z1 xyscaled (-1,-1) ; + z5 = z2 xyscaled (-1,-1) ; + + save indx ; numeric indx ; indx = 2 ; % starting value doesn't matter, really. + % polygons + three := incr indx ; % 3 (these numbers don't matter - they are just indices) + four := incr indx ; % 4 + five := incr indx ; % 5 + six := incr indx ; % 6 + seven := incr indx ; % 7 + eight := incr indx ; % 8 + nine := incr indx ; % 9 + + chem_init_some(three,3) ; + chem_init_some(four, 4) ; + chem_init_some(five, 5) ; + chem_init_some(six, 6) ; + chem_init_some(seven,7) ; + chem_init_some(eight,8) ; + chem_init_some(nine, 9) ; + + % star-form + one := incr indx ; % 10 + carbon := incr indx ; % 11 + alkyl := incr indx ; % 12 + newmanstagger := incr indx ; % 13 + newmaneclipsed := incr indx ; % 14 + + chem_star[one] := true ; + chem_star[carbon] := true ; chem_tetra[carbon] := true ; + chem_star[alkyl] := true ; chem_tetra[alkyl] := true ; + chem_star[newmanstagger] := true ; chem_tetra[newmanstagger] := true ; + chem_star[newmaneclipsed] := true ; chem_tetra[newmaneclipsed] := true ; + chem_stacked[newmanstagger] := true ; + chem_stacked[newmaneclipsed] := true ; + chem_init_some(one, 8) ; + chem_init_some(carbon, dir(0)--dir(360-a)--dir(180-.5a+b)--dir(180-.5a)) ; + chem_init_some(alkyl, dir(0)--dir(360-a)--dir(360-a-90)--dir(90)) ; + chem_init_some(newmanstagger, dir(30)--dir(270)--dir(150)--dir(330)--dir(210)--dir(90)) ; + chem_init_some(newmaneclipsed, dir(30)--dir(270)--dir(150)--dir(0)--dir(240)--dir(120)) ; + + % front views + fivefront := incr indx ; % 15 + sixfront := incr indx ; % 16 + chair := incr indx ; % 17 + boat := incr indx ; % 18 + + chem_front[fivefront] := true ; chem_front_b[fivefront] := 3 ; + chem_front[sixfront] := true ; chem_front_b[sixfront] := 3 ; + chem_init_some(fivefront,5) ; + chem_init_some(sixfront, 6) ; + % chair + chem_front[chair] := true ; chem_front_b[chair] := 4 ; + chem_init_some(chair, z1--z2--z3--z4--z5--z6) ; + lft := dir(90-a)--down--dir(90+a+d)--down--dir(90+a)--down ; + rt := up--dir(270+a)--up--dir(270-a)--up--dir(90+e) ; + chem_r_path.lft[chair] := + for i=0 upto 5 : point i of lft shifted point i of chem_b_path[chair] -- endfor + cycle ; + chem_r_path.rt[chair] := + for i=0 upto 5 : point i of rt shifted point i of chem_b_path[chair] -- endfor + cycle ; + % boat + chem_front[boat] := true ; chem_front_b[boat] := 4 ; + chem_init_some(boat, + for i=1 upto 4 : point i-1 of chem_b_path[sixfront] -- endfor + point 2 of chem_b_path[sixfront] yscaled .5 -- + point 1 of chem_b_path[sixfront] yscaled .5 + ) ; + lft := dir(30+.5a)--dir(330+.5a)--dir(210-.5a)--dir(150-.5a)--dir(120)--dir(60) ; + rt := dir(30-.5a)--dir(330-.5a)--dir(210+.5a)--dir(150+.5a)--dir(120+a)--dir(60-a) ; + chem_r_path.lft[boat] := + for i=0 upto 5 : point i of lft shifted point i of chem_b_path[boat] -- endfor + cycle ; + chem_r_path.rt[boat] := + for i=0 upto 5 : point i of rt shifted point i of chem_b_path[boat] -- endfor + cycle ; +endgroup +enddef ; + +chem_init_all ; % WHY does this not work unless defined and then called? + +% Like most often in ConTeXt, we will trap but then silently ignore mistaken use, +% unless of course the error be too harmful... + +% \startchemical + +def chem_start_structure(expr i, l, r, t, b, rotation, unit, bond, scale, offset, axis, rulethickness, axiscolor) = + save chem_setting_l, chem_setting_r, chem_setting_t, chem_setting_b ; + + chem_emwidth := unit ; % dynamically set for each structure. + chem_text_offset := -.3chem_emwidth ; % -.71chem_emwidth ; % 1/sqrt(2) + chem_center_offset := .5chem_emwidth ; + chem_b_length := chem_emwidth * bond * scale ; + % scale (normally 1) scales the structure but not the text. + + if numeric l : + chem_setting_l := -l ; + fi + if numeric r : + chem_setting_r := r ; + fi + if numeric t : + chem_setting_t := t ; + fi + if numeric b : + chem_setting_b := -b ; + fi + chem_setting_rotation := rotation ; + chem_setting_offset := offset ; + chem_setting_axis := if boolean axis : axis else : (axis<>0) fi ; + chem_axis_rulethickness := .75*(rulethickness) ; % axis 50% thinner than frame and bonds. + chem_axis_color := image(draw origin withcolor axiscolor) ; % so we handle all color models + + chem_reset ; +enddef ; + +% \stopchemical + +vardef chem_stop_structure = + % Make sure that all of the saved stack has been restored... (this was a gotcha!) + forever : + exitif chem_stack_n=0 ; + chem_restore ; + endfor + + currentpicture := (currentpicture shifted -chem_origin) rotated chem_setting_rotation ; + + save l, r, b, t ; + l := min(xpart llcorner currentpicture, xpart lrcorner currentpicture) ; + r := max(xpart llcorner currentpicture, xpart lrcorner currentpicture) ; + b := min(ypart llcorner currentpicture, ypart ulcorner currentpicture) ; + t := max(ypart llcorner currentpicture, ypart ulcorner currentpicture) ; + + if unknown chem_setting_l : chem_setting_l := l ; fi + if unknown chem_setting_r : chem_setting_r := r ; fi + if unknown chem_setting_b : chem_setting_b := b ; fi + if unknown chem_setting_t : chem_setting_t := t ; fi + + if chem_setting_axis : % put it behind the picture + chem_pic := currentpicture ; currentpicture := nullpicture ; + chem_num0 := .5chem_b_length ; + chem_num1 := .2chem_num0 ; + % draw the axes to the bounding box of the entire structure, + % not necessarily the bounding box of the final figure + draw (l,0) -- (r,0) + withpen pencircle scaled chem_axis_rulethickness withcolor colorpart(chem_axis_color) ; + draw (0,b) -- (0,t) + withpen pencircle scaled chem_axis_rulethickness withcolor colorpart(chem_axis_color) ; + for i = 0 step chem_num0 until r : + draw (i,-chem_num1) -- (i,chem_num1) + withpen pencircle scaled chem_axis_rulethickness withcolor colorpart(chem_axis_color) ; + endfor + for i = 0 step -chem_num0 until l : + draw (i,-chem_num1) -- (i,chem_num1) + withpen pencircle scaled chem_axis_rulethickness withcolor colorpart(chem_axis_color) ; + endfor + for i = 0 step chem_num0 until t : + draw (-chem_num1,i) -- (chem_num1,i) + withpen pencircle scaled chem_axis_rulethickness withcolor colorpart(chem_axis_color) ; + endfor + for i = 0 step -chem_num0 until b : + draw (-chem_num1,i) -- (chem_num1,i) + withpen pencircle scaled chem_axis_rulethickness withcolor colorpart(chem_axis_color) ; + endfor + addto currentpicture also chem_pic ; + fi ; + if chem_trace_boundingbox : + fill boundingbox currentpicture withcolor blue withtransparency(1,.25) ; + fi ; + setbounds currentpicture to + ((chem_setting_l,chem_setting_b) -- (chem_setting_r,chem_setting_b) -- + (chem_setting_r,chem_setting_t) -- (chem_setting_l,chem_setting_t) -- cycle) ; + if chem_trace_boundingbox : + fill boundingbox currentpicture withcolor red withtransparency(1,.25) ; + fi ; +enddef ; + +% \chemical + +vardef chem_start_component = enddef ; +vardef chem_stop_component = enddef ; + +vardef chem_pb = % PB : + if chem_trace_nesting : + draw boundingbox currentpicture + withpen pencircle scaled 1mm withcolor colorpart(chem_axis_color) ; + draw origin withpen pencircle scaled 2mm withcolor colorpart(chem_axis_color) ; + fi ; + chem_doing_pb := true ; +enddef ; + +vardef chem_pe = % PE + if chem_trace_nesting : + draw boundingbox currentpicture withpen pencircle scaled .5mm withcolor red ; + draw origin withpen pencircle scaled 1mm withcolor red ; + fi ; + currentpicture := currentpicture shifted -chem_origin ; + if chem_trace_nesting : + draw origin withpen pencircle scaled .5mm withcolor green ; + fi ; + chem_origin := origin ; + chem_doing_pb := false ; +enddef ; + +vardef chem_do (expr pos) = + if (unknown chem_doing_pb) or (not chem_doing_pb) : + pos + else : + chem_doing_pb := false ; + currentpicture := currentpicture shifted -pos ; + chem_origin := chem_origin shifted -pos ; + origin % nullpicture + fi +enddef ; + + +picture chem_stack_p[] ; +pair chem_stack_origin[], chem_stack_mirror[] ; +numeric chem_stack_rotation[] ; +string chem_stack_previous[] ; + +vardef chem_save = % SAVE + chem_stack_p [incr chem_stack_n] := currentpicture ; + chem_stack_origin [ chem_stack_n] := chem_origin ; chem_origin := origin ; + chem_stack_rotation[ chem_stack_n] := chem_rotation ; + chem_stack_mirror [ chem_stack_n] := chem_mirror ; + chem_stack_previous[ chem_stack_n] := chem_previous ; + currentpicture := nullpicture ; +enddef ; + +vardef chem_restore = % RESTORE + if chem_stack_n>0 : + currentpicture := currentpicture shifted -chem_origin ; + addto chem_stack_p [chem_stack_n] also currentpicture ; + currentpicture := chem_stack_p [chem_stack_n] ; + chem_stack_p[chem_stack_n] := nullpicture ; + chem_origin := chem_stack_origin [chem_stack_n] ; + chem_rotation := chem_stack_rotation[chem_stack_n] ; + chem_mirror := chem_stack_mirror [chem_stack_n] ; + chem_previous := chem_stack_previous[chem_stack_n] ; + chem_stack_n := chem_stack_n - 1 ; + fi ; +enddef ; + +% chem_adj and chem_sub are to be followed by chem_set(n) which does all the work... + +vardef chem_adj (suffix $) (expr d, s) = % ADJ + % scale s is ignored (for now?) + if not chem_front[$] : + chem_substituent := 0 ; + chem_substituent.lft := 0 ; + chem_substituent.rt := 0 ; + chem_adjacent := d ; + fi +enddef ; + +vardef chem_lsub (suffix $) (expr d, s) = % LSUB + chem_sub.lft($,d,s) ; +enddef ; + +vardef chem_rsub (suffix $) (expr d, s) = % RSUB + chem_sub.rt ($,d,s) ; +enddef ; + +vardef chem_sub@# (suffix $) (expr d, s) = % SUB + % scale s is ignored (for now?) + chem_adjacent := 0 ; + chem_substituent := 0 ; + chem_substituent.lft := 0 ; + chem_substituent.rt := 0 ; + % then : + chem_substituent@# := d ; +enddef ; + +def chem_transformed (suffix $) = % not vardef! + scaled chem_b_length + if not chem_front[$] : + if chem_mirror<>origin : reflectedabout(origin,chem_mirror) fi + rotated chem_rotation + fi +enddef ; + +vardef chem_draw (expr what, r, c) (text extra) = + draw what + withpen pencircle scaled r + withcolor c %\MPcolor{c} + extra ; +enddef ; + +vardef chem_fill (expr what, r, c) (text extra) = + fill what + withpen pencircle scaled r + withcolor c %\MPcolor{c} + extra ; +enddef ; + +vardef chem_drawarrow (expr what, r, c) (text extra) = + drawarrow what + withpen pencircle scaled r + withcolor c %\MPcolor{c} + extra ; +enddef ; + +vardef chem_set (suffix $) = + forsuffixes P = scantokens chem_previous : + + % This is a fairly complicated optimization and ajustement. It took some + % thinking to get right, so beware! + + % And then even more time fixing a bug of a rotation +- half the symmetry + % angle of a structure depending on the scale and/or the font size + % (through chem_b_length). + + % first save the symmetry angle of the structure (as in chem_rot): + chem_num0 := if chem_stacked[$] : 3 else : 0 fi ; + chem_num9 := if chem_tetra[$] : 360 else : + abs(angle(point 0+chem_num0 of chem_b_path[$]) - + angle(point 1+chem_num0 of chem_b_path[$])) + fi ; + + if (chem_adjacent<>0) and chem_star[P] and chem_star[$] : + % nop + chem_adjacent := 0 ; + elseif (chem_adjacent<>0) and (chem_front[P] or chem_front[$]) : + % not allowed for FRONT + chem_adjacent := 0 ; + elseif chem_adjacent<>0 : + chem_substituent := 0 ; + chem_substituent.lft := 0 ; + chem_substituent.rt := 0 ; + % move to the bond midpoint of the first structure + chem_pair0 := center ( + if chem_star[P] : + origin -- point (chem_adjacent-1) + else : + subpath (chem_adjacent-1,chem_adjacent) + fi + of chem_b_path[P] + ) chem_transformed(P) ; + % find the closest opposite bond of the second structure + chem_pair1 := chem_pair0 rotated if chem_star[P] : 90 else : 180 fi ; + chem_num0 := abs(chem_pair1) ; + chem_num1 := if chem_tetra[$] : 1 else : length chem_b_path[$] fi ; + % only consider even indices (cardinal points) for ONE + chem_num2 := if chem_star[$] and not chem_tetra[$] : 2 else : 1 fi ; + for i=0 step chem_num2 until chem_num1 : + chem_pair2 := ( + ( + unitvector + center ( + if chem_star[$] : + origin -- point i + else : + subpath (i,i+1) + fi + of chem_b_path[$]) + ) + scaled chem_num0 + ) chem_transformed($) ; + if i=0 : + chem_pair3 := chem_pair2 ; + chem_num3 := 0 ; + elseif (abs(chem_pair1 shifted -chem_pair2)) < (abs(chem_pair1 shifted -chem_pair3)) : + chem_pair3 := chem_pair2 ; + chem_num3 := i ; + fi + endfor + if chem_star[$] : + chem_pair4 := chem_pair0 shifted + -((point (chem_adjacent-1) of chem_b_path[P]) chem_transformed(P)) ; + fi + % adjust the bond angles + chem_num4 := (angle(chem_pair1)-angle(chem_pair3)) zmod chem_num9 ; + chem_rotation := chem_rotation + chem_num4 ; + if not chem_star[$] : + chem_pair4 := + if chem_star[P] : + (point chem_num3 + else : + center(subpath (chem_num3,chem_num3+1) + fi + of chem_b_path[$]) + chem_transformed($) ; + fi + if not chem_star[P] : + chem_pair4 := chem_pair4 shifted -chem_pair0 ; + fi + currentpicture := currentpicture shifted chem_pair4 ; + chem_origin := chem_origin shifted chem_pair4 ; + chem_adjacent := 0 ; + fi ; + + % Insure that only one, if any, will be nonzero + if ((chem_substituent <> 0) and (chem_substituent.lft <> 0)) or + ((chem_substituent <> 0) and (chem_substituent.rt <> 0)) or + ((chem_substituent.lft <> 0) and (chem_substituent.rt <> 0)) : + chem_substituent := 0 ; + chem_substituent.lft := 0 ; + chem_substituent.rt := 0 ; + fi + if (chem_substituent <> 0) or (chem_substituent.lft <> 0) or (chem_substituent.rt <> 0) : + % move origin to radical endpoint of the first structure + if chem_substituent.lft > 0 : + chem_pair0 := point chem_substituent.lft-1 of chem_r_path.lft[P] ; + chem_substituent := chem_substituent.lft ; + chem_substituent.lft := 0 ; + elseif chem_substituent.rt > 0 : + chem_pair0 := point chem_substituent.rt-1 of chem_r_path.rt[P] ; + chem_substituent := chem_substituent.rt ; + chem_substituent.rt := 0 ; + else : + chem_pair0 := point chem_substituent-1 of chem_r_path[P] ; + fi + chem_pair1 := chem_pair0 if not chem_star[P] : + shifted -(point chem_substituent-1 of chem_b_path[P]) fi ; + chem_t := identity chem_transformed(P) ; + chem_pair0 := chem_pair0 transformed chem_t ; % radical + chem_pair1 := chem_pair1 transformed chem_t ; % recentered (see below) + currentpicture := currentpicture shifted -chem_pair0 ; + chem_origin := chem_origin shifted -chem_pair0 ; + if (not (chem_star[P] and chem_star[$])) or chem_tetra[P] or chem_tetra[$] : + if chem_tetra[P] and chem_tetra[$] and ((chem_substituent=1) or (chem_substituent=2)): + chem_rotation := (chem_rotation + 180) mod 360 ; % trans-alkane + chem_pair2 := (point .5 of chem_b_path[$]) ; % bisector, not chem_transformed + if chem_mirror=origin : + chem_mirror := chem_pair2 ; + else : + chem_num0 := angle(chem_mirror)-angle(chem_pair2) ; + if (chem_num0>0) and (chem_num0> 180) : + chem_num0 := 360 - chem_num0 ; + elseif (chem_num0<0) and (chem_num0<-180) : + chem_num0 := -360 - chem_num0 ; + fi + chem_rotation := (chem_rotation + 2chem_num0) mod 360 ; + chem_mirror := origin ; + fi + fi + chem_t := identity chem_transformed($) ; + chem_pair1 := chem_pair1 rotated 180 ; % opposite direction of radical bond + % find the closest node + chem_num0 := abs(chem_pair1) ; % distance + % search to find the nearest node of $; only consider 1 and 2 for CARBON,ALKYL + chem_num1 := if chem_tetra[$] : 1 else : length chem_b_path[$] fi ; + % only consider even indices (cardinal points) for ONE + chem_num2 := if chem_star[$] and not chem_tetra[$] : 2 else : 1 fi ; + for i=0 step chem_num2 until chem_num1 : + chem_pair2 := (unitvector(point i of chem_b_path[$]) scaled chem_num0) + transformed chem_t ; + if i=0 : + chem_pair3 := chem_pair2 ; + chem_num3 := 0 ; + elseif (abs(chem_pair1 shifted -chem_pair2)) < + (abs(chem_pair1 shifted -chem_pair3)) : + chem_pair3 := chem_pair2 ; + chem_num3 := i ; + fi + endfor + if not chem_front[$] : % adjust rotation + chem_num4 := angle(chem_pair1)-angle(chem_pair3) ; + chem_rotation := (chem_rotation + chem_num4) mod 360 ; + fi ; + chem_t := identity chem_transformed($) ; + chem_pair4 := (point chem_num3 of chem_b_path[$]) transformed chem_t ; + if not chem_star[$] : + currentpicture := currentpicture shifted chem_pair4 ; + chem_origin := chem_origin shifted chem_pair4 ; + fi + if not chem_front[$] : % adjust rotation + chem_rotation := chem_rotation zmod chem_num9 ; + fi + fi + chem_substituent := 0 ; + fi ; + endfor + chem_previous := str $ ; +enddef ; + +% line (f_rom, t_o, r_ule, c_olor) + +vardef chem_b@# (suffix $) (expr f, t, r, c) = % B + if chem_star[$] : + chem_r@#($,f,t,r,c) ; + elseif length(str @#)>0 : + chem_sb@#($,f,t,r,c) ; + else : + chem_draw( + (subpath (f-1,t) of chem_b_path[$]) chem_transformed($), + r,c,) ; + fi +enddef ; + +vardef chem_sb@# (suffix $) (expr f, t, r, c) = % SB + if chem_star[$] : + chem_sr@#($,f,t,r,c) ; + else : + %chem_draw( + % (subpath (f-1,t) of chem_b_path[$]) chem_transformed($), + % r,c,dashed chem_sb_dash@# scaled chem_b_length) ; + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_draw( + (subpath (chem_sb_pair@# shifted (i-1,i-1)) of chem_b_path[$]) + transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_sd@# (suffix $) (expr f, t, r, c) = % SD + if chem_star[$] : + chem_rd@#($,f,t,r,c) ; + else : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_draw( + (subpath (chem_sb_pair@# shifted (i-1,i-1)) of chem_b_path[$]) + transformed chem_t, + r,c,dashed evenly) ; + endfor + fi +enddef ; + +vardef chem_r_fragment@# (suffix $) (expr i) = + ( + if chem_star[$] : + origin + else : + point i-1 of chem_b_path[$] + fi -- + point i-1 of chem_r_path@#[$] + ) % no ; +enddef ; + +vardef chem_r@# (suffix $) (expr f, t, r, c) = % R + if length(str @#)>0 : + chem_sr@#($,f,t,r,c) ; + else : + chem_sr.b($,f,t,r,c) ; + fi +enddef ; + +vardef chem_er@# (suffix $) (expr f, t, r, c) = % ER + if length(str @#)>0: + chem_dr@#($,f,t,r,c) ; + else : + chem_dr.b($,f,t,r,c) ; + fi +enddef ; + +vardef chem_dr@# (suffix $) (expr f, t, r, c) = % DR + if not chem_front[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := (subpath chem_sb_pair@# of chem_r_fragment($,i)) ; + chem_draw( + (chem_path0 paralleled chem_dbl_offset) transformed chem_t, + r,c,) ; + chem_draw( + (chem_path0 paralleled -chem_dbl_offset) transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_lr@# (suffix $) (expr f, t, r, c) = % LR + if length(str @#)>0 : + chem_lsr@#($,f,t,r,c) ; + else : + chem_lsr.b($,f,t,r,c) ; + fi +enddef ; + +vardef chem_rr@# (suffix $) (expr f, t, r, c) = % RR + if length(str @#)>0 : + chem_rsr@#($,f,t,r,c) ; + else : + chem_rsr.b($,f,t,r,c) ; + fi +enddef ; + +vardef chem_eb@# (suffix $) (expr f, t, r, c) = % EB + if not chem_star[$] : + %chem_draw( + % ((subpath (f-1,t) of chem_b_path[$]) paralleled -2chem_dbl_offset) + % chem_transformed($), + % r,c,dashed chem_sb_dash scaled chem_b_length) ; + for i=f upto t : + chem_t := identity chem_transformed($) ; + chem_draw( + ((subpath (chem_sb_pair@# shifted (i-1,i-1)) of chem_b_path[$]) + paralleled -2chem_dbl_offset) transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_ad@# (suffix $) (expr f, t, r, c) = % AD + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_drawarrow( + ( + (subpath + if chem_star[$] : + chem_sb_pair@# of chem_r_fragment($,i) + ) paralleled 5chem_dbl_offset + else : + (chem_sb_pair@# shifted (i-1,i-1)) of chem_b_path[$] + ) paralleled 2chem_dbl_offset + fi + ) transformed chem_t, + r,c,) ; + endfor +enddef ; + +vardef chem_au@# (suffix $) (expr f, t, r, c) = % AU + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_drawarrow( + ((reverse + subpath + if chem_star[$] : + chem_sb_pair@# of chem_r_fragment($,i) + ) paralleled -5chem_dbl_offset + else : + (chem_sb_pair@# shifted (i-1,i-1)) of chem_b_path[$] + ) paralleled -2chem_dbl_offset + fi + ) transformed chem_t, + r,c,) ; + endfor +enddef ; + +vardef chem_es@# (suffix $) (expr f, t, r, c) = % ES + if chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_draw( + ((point i-1 of chem_r_path[$]) scaled (xpart chem_sb_pair)) transformed chem_t, + chem_dot_factor*r,c,) ; + endfor + fi +enddef ; + +vardef chem_ed@# (suffix $) (expr f, t, r, c) = % ED + chem_t := identity chem_transformed($) ; + for i=f upto t : + if chem_star[$] : + chem_path0 := subpath chem_sb_pair of chem_r_fragment($,i) ; + chem_draw( + (point 0 of (chem_path0 paralleled -chem_dbl_offset)) transformed chem_t, + chem_dot_factor*r,c,) ; + chem_draw( + (point 0 of (chem_path0 paralleled chem_dbl_offset)) transformed chem_t, + chem_dot_factor*r,c,) ; + else : + chem_draw( + ((subpath (chem_sb_pair shifted (i-1,i-1)) of chem_b_path[$]) + paralleled -2chem_dbl_offset) transformed chem_t, + r,c,dashed evenly) ; + fi + endfor +enddef ; + +vardef chem_ep@# (suffix $) (expr f, t, r, c) = % EP + if chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair of chem_r_fragment($,i) ; + chem_draw( + (point 0 of (chem_path0 paralleled -chem_dbl_offset) -- + point 0 of (chem_path0 paralleled chem_dbl_offset)) transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_et@# (suffix $) (expr f, t, r, c) = % ET + if chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair of chem_r_fragment($,i) ; + chem_draw( + (point 0 of (chem_path0 paralleled -2chem_dbl_offset)) transformed chem_t, + chem_dot_factor*r,c,) ; + chem_draw( + (point 0 of chem_path0) transformed chem_t, + chem_dot_factor*r,c,) ; + chem_draw( + (point 0 of (chem_path0 paralleled 2chem_dbl_offset)) transformed chem_t, + chem_dot_factor*r,c,) ; + endfor + fi +enddef ; + +vardef chem_db@# (suffix $) (expr f, t, r, c) = % DB + if chem_star[$] : + chem_dr@#($,f,t,r,c) ; + elseif not chem_front[$] : + chem_t := identity chem_transformed($) ; + %chem_draw( + % ((subpath (f-1,t) of chem_b_path[$]) paralleled -chem_dbl_offset) + % transformed chem_t, + % r,c,dashed chem_sb_dash@# scaled chem_b_length) ; + %chem_draw( + % ((subpath (f-1,t) of chem_b_path[$]) paralleled chem_dbl_offset) + % transformed chem_t, + % r,c,dashed chem_sb_dash@# scaled chem_b_length) ; + for i=f upto t : + chem_path0 := subpath (chem_sb_pair@# shifted (i-1,i-1)) of chem_b_path[$] ; + chem_draw( + (chem_path0 paralleled -chem_dbl_offset) transformed chem_t, + r,c,) ; + chem_draw( + (chem_path0 paralleled chem_dbl_offset) transformed chem_t, + r,c,) ; + % todo : this should be cut-off where it overlaps a neighboring standard bond. + endfor + fi +enddef ; + +vardef chem_tb@# (suffix $) (expr f, t, r, c) = % TB + if chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment($,i) ; + chem_draw( + (chem_path0 paralleled -2chem_dbl_offset) transformed chem_t, + r,c,) ; + chem_draw( + chem_path0 transformed chem_t, + r,c,) ; + chem_draw( + (chem_path0 paralleled 2chem_dbl_offset) transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_sr@# (suffix $) (expr f, t, r, c) = % SR + chem_t := identity chem_transformed($) ; + if chem_stacked[$] : + chem_num0 := length chem_b_path[$] ; chem_num1 := floor(.5chem_num0) ; + for i=f upto t : + chem_draw( + (subpath (if i>chem_num1: .5,ypart fi chem_sb_pair@#) of chem_r_fragment($,i)) + transformed chem_t, + r,c,) ; + endfor + else : + for i=f upto t : + chem_draw( + (subpath chem_sb_pair@# of chem_r_fragment($,i)) + transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_rd@# (suffix $) (expr f, t, r, c) = % RD + chem_t := identity chem_transformed($) ; + if chem_stacked[$] : + chem_num0 := length chem_b_path[$] ; chem_num1 := floor(.5chem_num0) ; + for i=f upto t : + chem_draw( + (subpath (if i>chem_num1: .5,ypart fi chem_sb_pair@#) of chem_r_fragment($,i)) + transformed chem_t, + r,c,dashed evenly) ; + endfor + else : + for i=f upto t : + chem_draw( + (subpath chem_sb_pair@# of chem_r_fragment($,i)) + transformed chem_t, + r,c,dashed evenly) ; + endfor + fi +enddef ; + +vardef chem_rh@# (suffix $) (expr f, t, r, c) = % RH + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_draw( + (subpath chem_sb_pair@# of chem_r_fragment($,i)) + transformed chem_t, + chem_dot_factor*r,c,dashed withdots scaled ((.5chem_b_length/3)/5bp)) ; + % not symmetric - needs to be tweaked... + endfor +enddef ; + +vardef chem_lrh@# (suffix $) (expr f, t, r, c) = % LRH + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_draw( + (subpath chem_sb_pair@# of chem_r_fragment.lft($,i)) + transformed chem_t, + chem_dot_factor*r,c,dashed withdots scaled ((.5chem_b_length/3)/5bp)) ; + % not symmetric - needs to be tweaked... + endfor +enddef ; + +vardef chem_rrh@# (suffix $) (expr f, t, r, c) = % RRH + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_draw( + (subpath chem_sb_pair@# of chem_r_fragment.rt($,i)) + transformed chem_t, + chem_dot_factor*r,c,dashed withdots scaled ((.5chem_b_length/3)/5bp)) ; + % not symmetric - needs to be tweaked... + endfor +enddef ; + +vardef chem_hb@# (suffix $) (expr f, t, r, c) = % HB + if chem_star[$] : + chem_rh@#($,f,t,r,c) + else : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_draw( + (subpath (chem_sb_pair@# shifted (i-1,i-1)) of chem_b_path[$]) + transformed chem_t, + chem_dot_factor*r,c,dashed withdots scaled ((.5chem_b_length/3)/5bp)) ; + % not symmetric - needs to be tweaked... + endfor + fi +enddef ; + +vardef chem_bb@# (suffix $) (expr f, t, r, c) = % BB + if chem_star[$] : + chem_rb@#($,f,t,r,c) ; + elseif chem_front[$] : + chem_t := identity chem_transformed($) ; + chem_draw( + (subpath (f-1,t) of chem_b_path[$]) transformed chem_t, + r,c,) ; + chem_num0 := length chem_b_path[$] ; % total number of bonds + chem_num1 := chem_front_b[$] ; % number of bonds to be made bold + % bold bonds within f and t + chem_num2 := if f<0 :((f+1) mod chem_num0) + chem_num0 else : ((f-1) mod chem_num0) + 1 fi ; + chem_num3 := if t<0 :((t+1) mod chem_num0) + chem_num0 else : ((t-1) mod chem_num0) + 1 fi ; + if chem_num3<chem_num2 : + chem_num4 := chem_num3 ; + chem_num3 := chem_num2 ; + chem_num2 := chem_num4 ; + fi + if chem_num2<chem_num1 : % Are there any bonds to be made bold? + if chem_num2=1 : % Skip the first bold bond. + chem_fill( + (point chem_num2-1 of chem_b_path[$] -- + point chem_num2 of chem_b_path[$] shifted (0,-chem_dbl_offset) -- + point chem_num2 of chem_b_path[$] shifted (0, chem_dbl_offset) -- + cycle) transformed chem_t, + r,c,) ; + fi + if (chem_num2<=chem_num1-1) and (chem_num3>1) : + chem_path0 := subpath (if chem_num2>2 : chem_num2-1 else : 1 fi, + if chem_num3<chem_num1 : chem_num3 else : chem_num1-1 fi) + of chem_b_path[$] ; + chem_fill( + (chem_path0 paralleled -chem_dbl_offset -- + reverse(chem_path0) paralleled -chem_dbl_offset -- + cycle) transformed chem_t, + r,c,) ; + fi + if chem_num3>=chem_num1 : + chem_fill( + (point chem_num1 of chem_b_path[$] -- + point chem_num1-1 of chem_b_path[$] shifted (0,-chem_dbl_offset) -- + point chem_num1-1 of chem_b_path[$] shifted (0, chem_dbl_offset) -- + cycle) transformed chem_t, + r,c,) ; + fi + fi + fi +enddef ; + +vardef chem_rb@# (suffix $) (expr f, t, r, c) = % RB + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment($,i) ; + chem_fill( + (point 0 of chem_path0 -- + point 1 of chem_path0 + rotatedaround(point 0 of chem_path0, -chem_bb_angle) -- + point 1 of chem_path0 + rotatedaround(point 0 of chem_path0, chem_bb_angle) -- + cycle) transformed chem_t, + r,c,) ; + endfor +enddef ; + +vardef chem_lrb@# (suffix $) (expr f, t, r, c) = % LRB + if not chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment.lft($,i) ; + chem_fill( + (point 0 of chem_path0 -- + point 1 of chem_path0 + rotatedaround(point 0 of chem_path0, -chem_bb_angle) -- + point 1 of chem_path0 + rotatedaround(point 0 of chem_path0, chem_bb_angle) -- + cycle) transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_rrb@# (suffix $) (expr f, t, r, c) = % RRB + if not chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment.rt($,i) ; + chem_fill( + (point 0 of chem_path0 -- + point 1 of chem_path0 + rotatedaround(point 0 of chem_path0, -chem_bb_angle) -- + point 1 of chem_path0 + rotatedaround(point 0 of chem_path0, chem_bb_angle) -- + cycle) transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_lsr@# (suffix $) (expr f, t, r, c) = % LSR + if not chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_draw( + (subpath chem_sb_pair@# of chem_r_fragment.lft($,i)) transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_rsr@# (suffix $) (expr f, t, r, c) = % RSR + if not chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_draw( + (subpath chem_sb_pair@# of chem_r_fragment.rt($,i)) transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_lrd@# (suffix $) (expr f, t, r, c) = % LRD + if not chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_draw( + (subpath chem_sb_pair@# of chem_r_fragment.lft($,i)) transformed chem_t, + r,c,dashed evenly) ; + endfor + fi +enddef ; + +vardef chem_rrd@# (suffix $) (expr f, t, r, c) = % RRD + if not chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_draw( + (subpath chem_sb_pair@# of chem_r_fragment.rt($,i)) transformed chem_t, + r,c,dashed evenly) ; + endfor + fi +enddef ; + +vardef chem_s@# (suffix $) (expr f, t, r, c) = % S + if length(str @#)>0 : + chem_ss@#($,f,t,r,c) ; + else : + chem_ss.b($,f,t,r,c) ; + fi +enddef ; + +vardef chem_ss@# (suffix $) (expr f, t, r, c) = % SS + if not (chem_star[$] or chem_front[$]) : + chem_draw( + subpath chem_sb_pair@# of (point f-2 of chem_b_path[$] -- point t of chem_b_path[$]) + chem_transformed($), + r,c,) ; + fi +enddef ; + +vardef chem_mid@# (suffix $) (expr f, t, r, c) = % MID + if length(str @#)>0 : + chem_mids@#($,f,t,r,c) ; + else : + chem_mids.b($,f,t,r,c) ; + fi +enddef ; + +vardef chem_mids@# (suffix $) (expr f, t, r, c) = % MIDS + if not (chem_star[$] or chem_front[$]) : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_draw( + (subpath chem_sb_pair@# of (origin -- point i-1 of chem_b_path[$])) + transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_cd (suffix $) (expr r, c) = % CD + chem_draw( + chem_c_path[$] chem_transformed($), + r,c,dashed evenly) ; +enddef ; + +vardef chem_c (suffix $) (expr r, c) = % C + chem_draw( + chem_c_path[$] chem_transformed($), + r,c,) ; +enddef ; + +vardef chem_ccd (suffix $) (expr f, t, r, c) = % CCD + chem_num0 := ypart((origin--center(subpath (f-2,f-1) of chem_b_path[$])) + intersectiontimes chem_c_path[$]) ; + chem_num1 := ypart((origin--center(subpath (t-1,t) of chem_b_path[$])) + intersectiontimes chem_c_path[$]) ; + if chem_num1>chem_num0 : + chem_num0 := chem_num0 + length chem_c_path[$] ; + fi + chem_draw( + subpath (chem_num1,chem_num0) of chem_c_path[$] chem_transformed($), + r,c,dashed evenly) ; +enddef ; + +vardef chem_cc (suffix $) (expr f, t, r, c) = % CC + chem_num0 := ypart((origin--center(subpath (f-2,f-1) of chem_b_path[$])) + intersectiontimes chem_c_path[$]) ; + chem_num1 := ypart((origin--center(subpath (t-1,t) of chem_b_path[$])) + intersectiontimes chem_c_path[$]) ; + if chem_num1>chem_num0 : + chem_num0 := chem_num0 + length chem_c_path[$] ; + fi + chem_draw( + subpath (chem_num1,chem_num0) of chem_c_path[$] chem_transformed($), + r,c,) ; +enddef ; + +vardef chem_ldb@# (suffix $) (expr f, t, r, c) = % LD + if chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment($,i) ; + chem_draw( + chem_path0 transformed chem_t, + r,c,) ; + chem_draw( + (chem_path0 paralleled 2chem_dbl_offset) transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_rdb@# (suffix $) (expr f, t, r, c) = % LD + if chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment($,i) ; + chem_draw( + chem_path0 transformed chem_t, + r,c,) ; + chem_draw( + (chem_path0 paralleled -2chem_dbl_offset) transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_ldd@# (suffix $) (expr f, t, r, c) = % LDD + if chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment($,i) ; + chem_draw( + chem_path0 transformed chem_t, + r,c,) ; + chem_draw( + (chem_path0 paralleled 2chem_dbl_offset) transformed chem_t, + r,c,dashed evenly) ; + endfor + fi +enddef ; + +vardef chem_rdd@# (suffix $) (expr f, t, r, c) = % RDD + if chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment($,i) ; + chem_draw( + chem_path0 transformed chem_t, + r,c,) ; + chem_draw( + (chem_path0 paralleled -2chem_dbl_offset) transformed chem_t, + r,c,dashed evenly) ; + endfor + fi +enddef ; + +vardef chem_oe@# (suffix $) (expr f, t, r, c) = % OE + if chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment($,i) ; + chem_path1 := chem_path0 paralleled -.5chem_dbl_offset ; + chem_path2 := chem_path0 paralleled .5chem_dbl_offset ; + chem_draw( + ( point 0 of chem_path0 -- + .2[point 0 of chem_path0, point infinity of chem_path0].. + .3[point 0 of chem_path1, point infinity of chem_path1].. + .4[point 0 of chem_path0, point infinity of chem_path0].. + .5[point 0 of chem_path2, point infinity of chem_path2].. + .6[point 0 of chem_path0, point infinity of chem_path0].. + .7[point 0 of chem_path1, point infinity of chem_path1].. + .8[point 0 of chem_path0, point infinity of chem_path0]-- + point infinity of chem_path0) transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_bw@# (suffix $) (expr f, t, r, c) = % BW + if chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment($,i) ; + chem_path1 := chem_path0 paralleled -.5chem_dbl_offset ; + chem_path2 := chem_path0 paralleled .5chem_dbl_offset ; + chem_draw( + ( point 0 of chem_path0.. + .1[point 0 of chem_path1, point infinity of chem_path1].. + .2[point 0 of chem_path0, point infinity of chem_path0].. + .3[point 0 of chem_path2, point infinity of chem_path2].. + .4[point 0 of chem_path0, point infinity of chem_path0].. + .5[point 0 of chem_path1, point infinity of chem_path1].. + .6[point 0 of chem_path0, point infinity of chem_path0].. + .7[point 0 of chem_path2, point infinity of chem_path2].. + .8[point 0 of chem_path0, point infinity of chem_path0].. + .9[point 0 of chem_path1, point infinity of chem_path1].. + point infinity of chem_path0) transformed chem_t, + r,c,) ; + endfor + fi +enddef ; + +vardef chem_bd@# (suffix $) (expr f, t, r, c) = % BD + if chem_star[$] : chem_rbd#@($,f,t,r,c) ; fi +enddef ; + +vardef chem_rbd@# (suffix $) (expr f, t, r, c) = % RBD + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment($,i) ; + if chem_bd_wedge : + chem_path1 := chem_path0 rotated -chem_bb_angle ; + chem_path2 := chem_path0 rotated chem_bb_angle ; + else : + chem_path1 := chem_path0 paralleled -chem_dbl_offset ; + chem_path2 := chem_path0 paralleled chem_dbl_offset ; + fi + for j=0 upto 3 : + chem_draw( + (point (j/3) of chem_path1 -- point (j/3) of chem_path2) transformed chem_t, + 2r,c,) ; + endfor + endfor +enddef ; + +vardef chem_lrbd@# (suffix $) (expr f, t, r, c) = % LRBD + if not chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment.lft($,i) ; + if chem_bd_wedge : + chem_path1 := chem_path0 rotated -chem_bb_angle ; + chem_path2 := chem_path0 rotated chem_bb_angle ; + else : + chem_path1 := chem_path0 paralleled -.5chem_dbl_offset ; + chem_path2 := chem_path0 paralleled .5chem_dbl_offset ; + fi + for j=0 upto 3 : + chem_draw( + (point (j/3) of chem_path1 -- point (j/3) of chem_path2) transformed chem_t, + 2r,c,) ; + endfor + endfor + fi +enddef ; + +vardef chem_rrbd@# (suffix $) (expr f, t, r, c) = % RRBD + if not chem_star[$] : + chem_t := identity chem_transformed($) ; + for i=f upto t : + chem_path0 := subpath chem_sb_pair@# of chem_r_fragment.rt($,i) ; + if chem_bd_wedge : + chem_path1 := chem_path0 rotated -chem_bb_angle ; + chem_path2 := chem_path0 rotated chem_bb_angle ; + else : + chem_path1 := chem_path0 paralleled -.5chem_dbl_offset ; + chem_path2 := chem_path0 paralleled .5chem_dbl_offset ; + fi + for j=0 upto 3 : + chem_draw( + (point (j/3) of chem_path1 -- point (j/3) of chem_path2) transformed chem_t, + 2r,c,) ; + endfor + endfor + fi +enddef ; + +% text, number (no alignment on number); + +vardef chem_z@#(suffix $) (expr p) (text t) = % Z + draw chem_text@# + (t,chem_do( + if p=0 : + origin + else : + (point p-1 of chem_b_path[$]) chem_transformed($) + fi + )) ; +enddef ; + +vardef chem_cz@#(suffix $) (expr p) (text t) = chem_z@#($,p,t) ; enddef ; % CZ ? + +vardef chem_midz@#(suffix $) (expr p) (text t) = % MIDZ + if not (chem_star[$] or chem_front[$]) : + draw chem_text@# + (t,chem_do( + (xpart chem_sb_pair, 0) scaled (xpart point 0 of chem_b_path[$]) + chem_transformed($) + )) ; + fi +enddef ; + +vardef chem_rz@#(suffix $) (expr p) (text t) = % RZ + draw chem_text@# + (t, chem_do((point p-1 of chem_r_path[$]) chem_transformed($))) ; +enddef ; + +vardef chem_lrz@#(suffix $) (expr p) (text t) = % LRZ + if not chem_star[$] : + draw chem_text@# + (t, + chem_do((point p-1 of chem_r_path.lft[$]) chem_transformed($))) ; + fi +enddef ; + +vardef chem_rrz@#(suffix $) (expr p) (text t) = % RRZ + if not chem_star[$] : + draw chem_text@# + (t, chem_do((point p-1 of chem_r_path.rt[$]) chem_transformed($))) ; + fi +enddef ; + +vardef chem_zn@#(suffix $) (expr p) (text t) = % ZN + chem_zt($,p,t) ; +enddef ; + +vardef chem_zt@#(suffix $) (expr p) (text t) = % ZT + draw chem_text@#(t,chem_do ((point p-1 of chem_b_path[$]) chem_transformed($) + scaled chem_text_min)) ; +enddef ; + +vardef chem_zln@#(suffix $) (expr p) (text t) = % ZLN + chem_zlt($,p,t) ; +enddef ; + +vardef chem_zlt@#(suffix $) (expr p) (text t) = % ZLT + draw chem_text@#(t, chem_do((point p-1.5 of chem_b_path[$]) chem_transformed($) + scaled chem_text_min)) ; +enddef ; + +vardef chem_zrn@#(suffix $) (expr p) (text t) = % ZRN + chem_zrt($,p,t) ; +enddef ; + +vardef chem_zrt@#(suffix $) (expr p) (text t) = % ZRT + draw chem_text@#(t, chem_do((point p-0.5 of chem_b_path[$]) chem_transformed($) + scaled chem_text_min)) ; +enddef ; + +vardef chem_crz@#(suffix $) (expr p) (text t) = % CRZ ???? + if chem_star[$] : + draw chem_text@#(t, chem_do((point p-1 of chem_b_path[$] enlonged chem_center_offset) + chem_transformed($))) ; + fi +enddef ; + +vardef chem_rn@#(suffix $) (expr i, t) = % RN + chem_rt($,i,t) ; +enddef ; + +vardef chem_rt@#(suffix $) (expr p) (text t) = % RT + draw chem_text@#(t, chem_do((center chem_r_fragment($,p)) chem_transformed($))) ; +enddef ; + +vardef chem_lrn@#(suffix $) (expr i, t) = % LRN + chem_lrt($,i,t) ; +enddef ; + +vardef chem_lrt@#(suffix $) (expr p) (text t) = % LRT + draw chem_text@#(t, chem_do((center chem_r_fragment.lft($,p)) chem_transformed($))) ; +enddef ; + +vardef chem_rrn@# (suffix $) (expr i, t) = % RRN + chem_rrt($,i,t) ; +enddef ; + +vardef chem_rrt@#(suffix $) (expr p) (text t) = % RRT + draw chem_text@#(t, chem_do((center chem_r_fragment.rt($,p)) chem_transformed($))) ; +enddef ; + +vardef chem_symbol(expr t) = draw textext(t) ; enddef ; + +vardef chem_align@#(expr pic) = + pic + if (mfun_labtype@# >= 10) : + shifted (0,ypart center pic) + fi + shifted (-(mfun_labxf@#*lrcorner pic + mfun_labyf@#*ulcorner pic + (1-mfun_labxf@#-mfun_labyf@#)*llcorner pic)) +enddef ; + +vardef chem_text@#(expr txt, z) = + chem_pic := textext(txt) ; + if length(str @#)=0 : + chem_pic := chem_align(chem_pic) ; + elseif (str @#) = "auto" : + if z<>origin : + chem_num0 := abs(angle(z rotated chem_setting_rotation)) ; + if chem_num0<=60 : + chem_pic := chem_align.rt (chem_pic) xshifted chem_text_offset ; + elseif chem_num0>=120 : + chem_pic := chem_align.lft(chem_pic) xshifted -chem_text_offset ; + else : + chem_pic := chem_align (chem_pic) ; + fi + else : + chem_pic := chem_align (chem_pic) ; + fi + else : + chem_pic := chem_align@#(chem_pic) shifted (chem_text_offset*mfun_laboff@#) ; + fi + chem_pic := (chem_pic rotated -chem_setting_rotation) shifted z ; + + if chem_trace_text : + draw z withpen pencircle scaled 2pt withcolor red ; + draw boundingbox chem_pic withpen pencircle scaled 1pt withcolor red ; + fi + + chem_pic +enddef ; + +% transform + +% rotations and reflections + +vardef chem_rot (suffix $) (expr d, s) = % ROT + if not chem_front[$] : + if d=0 : + chem_rotation := 0 + else : + chem_num0 := if chem_stacked[$] : 3 else : 0 fi ; + chem_num1 := .5(angle(point d+chem_num0 of chem_b_path[$]) - + angle(point d+chem_num0-1 of chem_b_path[$])) ; + chem_rotation := (chem_rotation + s*chem_num1) zmod 360 ; + fi + fi +enddef ; + +vardef chem_mir (suffix $) (expr d, s) = % MIR + % We take the scale factor s to multiply the rotation, but only ONCE. + % For example: CARBON,.5MIR12 will give a rotation by 104° + if not chem_front[$] : + if d=0 : % inversion + if chem_mirror=origin : + chem_rotation := (chem_rotation + 180*s) zmod 360 ; + else : + chem_mirror := chem_mirror rotated 90 ; + fi + else : + chem_pair0 := (point d-1 of chem_b_path[$]) scaled s ; % not chem_transformed + if chem_mirror=origin : + chem_mirror := chem_pair0 ; + else : + chem_num0 := angle(chem_mirror)-angle(chem_pair0) ; + if (chem_num0>0) and (chem_num0> 180) : + chem_num0 := 360 - chem_num0 ; + elseif (chem_num0<0) and (chem_num0<-180) : + chem_num0 := -360 - chem_num0 ; + fi + chem_num0 := chem_num0 * s ; + chem_rotation := (chem_rotation + 2chem_num0) zmod 360 ; + chem_mirror := origin ; + fi + fi + fi +enddef ; + +% translations + +vardef chem_dir (suffix $) (expr d, s) = % DIR (same as MOV(d-1)MOV(d+1)) + if not chem_front[$] : + if d=0 : + currentpicture := currentpicture shifted -chem_origin ; + chem_origin := origin ; + else : + chem_pair0 := + (((point d-2 of chem_b_path[$]) shifted (point d of chem_b_path[$])) scaled s) + chem_transformed($) ; + currentpicture := currentpicture shifted -chem_pair0 ; + chem_origin := chem_origin shifted -chem_pair0 ; + fi + fi +enddef ; + +vardef chem_mov (suffix $) (expr d, s) = % MOV + if d=0 : + currentpicture := currentpicture shifted -chem_origin ; + chem_origin := origin ; + else : + chem_pair0 := ((point d-1 of chem_b_path[$]) scaled s) chem_transformed($) ; + currentpicture := currentpicture shifted -chem_pair0 ; + chem_origin := chem_origin shifted -chem_pair0 ; + fi ; +enddef ; + +vardef chem_mark (suffix $) (expr d, s) = % MARK + % scale s is ignored + if d<>0 : + chem_mark_pair[d] := -chem_origin ; + fi +enddef ; + +vardef chem_marked (expr d) = + if d=0 : + chem_origin + elseif known chem_mark_pair[d] : + chem_mark_pair[d] shifted chem_origin + else : + origin + fi +enddef ; + +vardef chem_number@#(suffix $) (expr p) (text t) = chem_label@#($,p,t) enddef ; % NUMBER +vardef chem_label@# (suffix $) (expr p) (text t) = % LABEL + draw chem_text@#(t,chem_do(chem_marked(p))) ; +enddef ; + +vardef chem_move (suffix $) (expr d, s) = % MOVE + chem_pair0 := chem_marked(d) scaled s ; + currentpicture := currentpicture shifted -chem_pair0 ; + chem_origin := chem_origin shifted -chem_pair0 ; +enddef ; + +vardef chem_diff (suffix $) (expr d, s) = % DIFF + chem_pair0 := (chem_marked(d) shifted -chem_origin) scaled s ; + currentpicture := currentpicture shifted -chem_pair0 ; + chem_origin := chem_origin shifted -chem_pair0 ; +enddef ; + +vardef chem_line (suffix $) (expr f, t, r, c) = % LINE + draw if f=t : origin else : chem_marked(f) fi -- chem_marked(t) + % no chem_transformed + withpen pencircle scaled r + withcolor c %\MPcolor{c} +enddef ; + +vardef chem_dash (suffix $) (expr f, t, r, c) = % DASH + draw if f=t : origin else : chem_marked(f) fi -- chem_marked(t) + % no chem_transformed + withpen pencircle scaled r + withcolor c %\MPcolor{c} + dashed evenly ; +enddef ; + +vardef chem_arrow (suffix $) (expr f, t, r, c) = % ARROW + drawarrow if f=t : origin else : chem_marked(f) fi -- chem_marked(t) + % no chem_transformed + withpen pencircle scaled r + withcolor c %\MPcolor{c} +enddef ; + + +vardef chem_rm (suffix $) (expr d, s) = % RM + if (not chem_front[$]) and (d<>0) : + chem_pair0 := ((point d-1 of chem_r_path[$]) scaled s) chem_transformed($) ; + currentpicture := currentpicture shifted -chem_pair0 ; + chem_origin := chem_origin shifted -chem_pair0 ; + fi ; +enddef ; + +vardef chem_off (suffix $) (expr d, s) = % OFF + if d=0 : + currentpicture := currentpicture shifted -chem_origin ; + chem_origin := origin ; + else : + chem_pair0 := (unitvector(point d-1 of chem_b_path[one])) scaled chem_setting_offset*s ; + % not chem_transformed + currentpicture := currentpicture shifted -chem_pair0 ; + chem_origin := chem_origin shifted -chem_pair0 ; + fi ; +enddef ; diff --git a/metapost/context/base/mpiv/mp-core.mpiv b/metapost/context/base/mpiv/mp-core.mpiv new file mode 100644 index 000000000..9b7182908 --- /dev/null +++ b/metapost/context/base/mpiv/mp-core.mpiv @@ -0,0 +1,1561 @@ +%D \module +%D [ file=mp-core.mpiv, +%D version=1999.08.01, % anchoring +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=background macros, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +if known context_core : endinput ; fi ; + +boolean context_core ; context_core := true ; + +%D Copied to here .. not used any more. + +if unknown NOfTextColumns : numeric NOfTextColumns ; NOfTextColumns := 1 ; fi ; +if unknown NOfTextAreas : numeric NOfTextAreas ; NOfTextAreas := 1 ; fi ; + +def SaveTextAreas = + path SavedTextAreas [] ; + path SavedTextColumns[] ; + numeric NOfSavedTextAreas ; + numeric NOfSavedTextColumns ; + for i=1 upto NOfTextAreas : + SavedTextAreas[i] := TextAreas[i] ; + endfor ; + for i=1 upto NOfTextColumns : + SavedTextColumns[i] := TextColumns[i] ; + endfor ; + NOfSavedTextAreas := NOfTextAreas ; + NOfSavedTextColumns := NOfTextColumns ; +enddef ; + +def ResetTextAreas = + path TextAreas[], TextColumns[], PlainTextArea, RegionTextArea ; + numeric NOfTextAreas ; NOfTextAreas := 0 ; + numeric NOfTextColumns ; NOfTextColumns := 0 ; + numeric nofmultipars ; nofmultipars := 0 ; + TextAreas[0] := TextColumns[0] := origin -- cycle ; +enddef ; + +ResetTextAreas ; SaveTextAreas ; ; + +def RegisterTextArea (expr x, y, w, h, d) = + begingroup ; + save p ; path p ; + p := unitsquare xyscaled(w,h+d) shifted (x,y-d) ; + if NOfTextAreas>0 : + % if needed, concatenate areas + if (round(llcorner TextAreas[NOfTextAreas]) = round(ulcorner p)) and + (round(lrcorner TextAreas[NOfTextAreas]) = round(urcorner p)) : + p := + ulcorner TextAreas[NOfTextAreas] -- + urcorner TextAreas[NOfTextAreas] -- + lrcorner p -- + llcorner p -- cycle ; + else : + NOfTextAreas := NOfTextAreas + 1 ; + fi ; + else : + NOfTextAreas := NOfTextAreas + 1 ; + fi ; + TextAreas[NOfTextAreas] := p ; + if NOfTextColumns>0 : + if (round(xpart llcorner TextColumns[NOfTextColumns]) = round(xpart ulcorner p)) and + (round(xpart lrcorner TextColumns[NOfTextColumns]) = round(xpart urcorner p)) : + p := + ulcorner TextColumns[NOfTextColumns] -- + urcorner TextColumns[NOfTextColumns] -- + lrcorner p -- + llcorner p -- cycle ; + else : + NOfTextColumns := NOfTextColumns + 1 ; + fi ; + else : + NOfTextColumns := NOfTextColumns + 1 ; + fi ; + TextColumns[NOfTextColumns] := p ; + endgroup ; +enddef ; + +%D We store a local area in slot zero. + +def RegisterPlainTextArea(expr x,y,w,h,d) = + PlainTextArea := unitsquare xyscaled(w,h+d) shifted (x,y-d) ; +enddef ; + +def RegisterRegionTextArea(expr x,y,w,h,d) = + RegionTextArea := unitsquare xyscaled(w,h+d) shifted (x,y-d) ; + % RegionTextArea := RegionTextArea enlarged 2mm ; +enddef ; + +def RegisterLocalTextArea (expr x, y, w, h, d) = + TextAreas[0] := TextColumns[0] := unitsquare xyscaled(w,h+d) shifted (x,y-d) ; +enddef ; + +def ResetLocalTextArea = + TextAreas[0] := TextColumns[0] := origin -- cycle ; +enddef ; + +ResetLocalTextArea ; + +vardef InsideTextArea (expr _i_, _xy_) = + (round(xpart _xy_) >= round(xpart llcorner TextAreas[_i_])) and + (round(xpart _xy_) <= round(xpart lrcorner TextAreas[_i_])) and + (round(ypart _xy_) >= round(ypart llcorner TextAreas[_i_])) and + (round(ypart _xy_) <= round(ypart urcorner TextAreas[_i_])) +enddef ; + +vardef InsideSavedTextArea (expr _i_, _xy_) = + (round(xpart _xy_) >= round(xpart llcorner SavedTextAreas[_i_])) and + (round(xpart _xy_) <= round(xpart lrcorner SavedTextAreas[_i_])) and + (round(ypart _xy_) >= round(ypart llcorner SavedTextAreas[_i_])) and + (round(ypart _xy_) <= round(ypart urcorner SavedTextAreas[_i_])) +enddef ; + +vardef InsideSomeTextArea (expr _xy_) = + save ok ; boolean ok ; ok := false ; + for i := 1 upto NOfTextAreas : + if InsideTextArea(i,_xy_) : + ok := true ; % we can move the exit here + fi ; + exitif ok ; + endfor ; + ok +enddef ; + +vardef InsideSomeSavedTextArea (expr _xy_) = + save ok ; boolean ok ; ok := false ; + for i := 1 upto NOfSavedTextAreas : + if InsideSavedTextArea(i,_xy_) : + ok := true ; + fi ; + exitif ok ; + endfor ; + ok +enddef ; + +vardef TextAreaX (expr x) = + numeric _TextAreaX_ ; _TextAreaX_ := 0 ; + for i := 1 upto NOfTextAreas : + if (round(x) >= round(xpart llcorner TextAreas[i])) and + (round(x) <= round(xpart lrcorner TextAreas[i])) : + _TextAreaX_ := xpart llcorner TextAreas[i] ; + fi ; + endfor ; + _TextAreaX_ +enddef ; + +vardef TextAreaY (expr y) = + numeric _TextAreaY_ ; _TextAreaY_ := 0 ; + for i := 1 upto NOfTextAreas : + if (round(y) >= round(ypart llcorner TextAreas[NOfTextAreas])) and + (round(y) <= round(ypart ulcorner TextAreas[NOfTextAreas])) : + _TextAreaY_ := ypart llcorner TextAreas[NOfTextAreas] ; + fi ; + endfor ; + _TextAreaY_ +enddef ; + +vardef TextAreaXY (expr x, y) = + pair _TextAreaXY_ ; _TextAreaXY_ := origin ; + for i := 1 upto NOfTextAreas : + if (round(x) >= round(xpart llcorner TextAreas[i])) and + (round(x) <= round(xpart lrcorner TextAreas[i])) and + (round(y) >= round(ypart llcorner TextAreas[i])) and + (round(y) <= round(ypart ulcorner TextAreas[i])) : + _TextAreaXY_ := llconer TextAreas[i] ; + fi ; + endfor ; + _TextAreaXY_ +enddef ; + +vardef TextAreaW (expr x) = + numeric _TextAreaW_ ; _TextAreaW_ := 0 ; + for i := 1 upto NOfTextAreas : + if (round(x) >= round(xpart llcorner TextAreas[i])) and + (round(x) <= round(xpart lrcorner TextAreas[i])) : + _TextAreaW_ := bbwidth(TextAreas[i]) ; + fi ; + endfor ; + _TextAreaW_ +enddef ; + +vardef TextAreaH (expr y) = + numeric _TextAreaH_ ; _TextAreaH_ := 0 ; + for i := 1 upto NOfTextAreas : + if (round(y) >= round(ypart llcorner TextAreas[i])) and + (round(y) <= round(ypart ulcorner TextAreas[i])) : + _TextAreaH_ := bbheight(TextAreas[i]) ; + fi ; + endfor ; + _TextAreaH_ +enddef ; + +vardef TextAreaWH (expr x, y) = + pair _TextAreaWH_ ; _TextAreaWH_ := origin ; + for i := 1 upto NOfTextAreas : + if (round(x) >= round(xpart llcorner TextAreas[i])) and + (round(x) <= round(xpart lrcorner TextAreas[i])) and + (round(y) >= round(ypart llcorner TextAreas[i])) and + (round(y) <= round(ypart ulcorner TextAreas[i])) : + _TextAreaWH_ := (bbwidth(TextAreas[i]),bbheight(TextAreas[i])) ; + fi ; + endfor ; + _TextAreaWH_ +enddef ; + +%D Till here. + +pair lxy[], rxy[], cxy[], llxy[], lrxy[], ulxy[], urxy[] ; +path pxy[] ; +numeric hxy[], wxy[], dxy[], nxy[] ; + +def box_found (expr n,x,y,w,h,d) = + not ((x=0) and (y=0) and (w=0) and (h=0) and (d=0)) +enddef ; + +def initialize_box_pos (expr pos,n,x,y,w,h,d) = + pair lxy, rxy, cxy, llxy, lrxy, ulxy, urxy ; + path pxy ; numeric hxy, wxy, dxy, nxy; + lxy := (x,y) ; + llxy := (x,y-d) ; + lrxy := (x+w,y-d) ; + urxy := (x+w,y+h) ; + ulxy := (x,y+h) ; + wxy := w ; + hxy := h ; + dxy := d ; + rxy := lxy shifted (wxy,0) ; + pxy := llxy--lrxy--urxy--ulxy--cycle ; + cxy := center pxy ; + nxy := n ; + freeze_box(pos) ; +enddef ; + +def freeze_box (expr pos) = + lxy[pos] := lxy ; + llxy[pos] := llxy ; + lrxy[pos] := lrxy ; + urxy[pos] := urxy ; + ulxy[pos] := ulxy ; + wxy[pos] := wxy ; + hxy[pos] := hxy ; + dxy[pos] := dxy ; + rxy[pos] := rxy ; + pxy[pos] := pxy ; + cxy[pos] := cxy ; + nxy[pos] := nxy ; +enddef ; + +def initialize_box (expr n,x,y,w,h,d) = + numeric bpos ; bpos := 0 ; initialize_box_pos(bpos,n,x,y,w,h,d) ; +enddef ; + +def initialize_area (expr fn,fx,fy,fw,fh,fd, + tn,tx,ty,tw,th,td) = + numeric fpos ; fpos := 1 ; initialize_box_pos(fpos,fn,fx,fy,fw,fh,fd) ; + numeric tpos ; tpos := 2 ; initialize_box_pos(tpos,tn,tx,ty,tw,th,td) ; + do_initialize_area (fpos, tpos) ; +enddef ; + +def do_initialize_area (expr fpos, tpos) = + lxy := lxy[fpos] ; + llxy := (xpart llxy[fpos], ypart llxy[tpos]) ; + lrxy := lrxy[tpos] ; + urxy := (xpart urxy[tpos], ypart urxy[fpos]) ; + ulxy := ulxy[fpos] ; + wxy := xpart lrxy - xpart llxy ; + hxy := hxy[fpos] ; + dxy := dxy[tpos] ; + rxy := lxy shifted (wxy,0) ; + pxy := llxy--lrxy--urxy--ulxy--cycle ; + cxy := center pxy ; +enddef ; + +def set_par_line_height (expr ph, pd) = + par_strut_height := if ph>0 : ph elseif StrutHeight>0 : StrutHeight else : 8pt fi ; + par_strut_depth := if pd>0 : pd elseif StrutDepth >0 : StrutDepth else : 3pt fi ; + par_line_height := par_strut_height + par_strut_depth ; +enddef ; + +def initialize_par (expr fn,fx,fy,fw,fh,fd, + tn,tx,ty,tw,th,td, + mn,mx,my,mw,mh,md, + pn,px,py,pw,ph,pd, + rw,rl,rr,rh,ra,ri) = + + numeric fpos ; fpos := 1 ; initialize_box_pos(fpos,fn,fx,fy,fw,fh,fd) ; + numeric tpos ; tpos := 2 ; initialize_box_pos(tpos,tn,tx,ty,tw,th,td) ; + numeric mpos ; mpos := 3 ; initialize_box_pos(mpos,mn,mx,my,mw,mh,md) ; + numeric ppos ; ppos := 4 ; initialize_box_pos(ppos,pn,px,py,pw,ph,pd) ; + + numeric par_strut_height, par_strut_depth, par_line_height ; + + set_par_line_height (ph, pd) ; + + do_initialize_area (fpos, tpos) ; + do_initialize_par (fpos, tpos, mpos, ppos, rw,rl,rr,rh,ra,ri) ; + +enddef ; + +def initialize_area_par (expr fn,fx,fy,fw,fh,fd, + tn,tx,ty,tw,th,td, + wn,wx,wy,ww,wh,wd) = + + numeric fpos ; fpos := 1 ; initialize_box_pos(fpos,fn,fx,fy,fw,fh,fd) ; + numeric tpos ; tpos := 2 ; initialize_box_pos(tpos,tn,tx,ty,tw,th,td) ; + numeric wpos ; wpos := 3 ; initialize_box_pos(wpos,wn,wx,wy,ww,wh,wd) ; + + numeric par_strut_height, par_strut_depth, par_line_height ; + + set_par_line_height (wh, wd) ; + + numeric ffpos ; ffpos := 4 ; initialize_box_pos(ffpos,wn,wx,fy,0,wh,wd) ; + numeric ttpos ; ttpos := 5 ; initialize_box_pos(ttpos,wn,wx+ww,ty,0,wh,wd) ; + + do_initialize_area (ffpos, ttpos) ; + + numeric mpos ; mpos := 6 ; freeze_box(mpos) ; + + do_initialize_par (fpos, tpos, mpos, ffpos, 0,0,0,0,0,0) ; + +enddef ; + +def do_initialize_par (expr fpos, tpos, mpos, ppos, rw,rl,rr,rh,ra,ri) = + + pair lref, rref, pref, lhref, rhref ; + + % clip the page area to the left and right skips + + llxy[mpos] := llxy[mpos] shifted (+rl,0) ; + lrxy[mpos] := lrxy[mpos] shifted (-rr,0) ; + urxy[mpos] := urxy[mpos] shifted (-rr,0) ; + ulxy[mpos] := ulxy[mpos] shifted (+rl,0) ; + + % fixate the leftskip, rightskip and hanging indentation + + lref := (xpart llxy[mpos],ypart ulxy[ppos]) ; lhref := lref shifted (rh,0) ; + rref := (xpart lrxy[mpos],ypart urxy[ppos]) ; rhref := rref shifted (rh,0) ; + + pref := lxy[ppos] ; + + if nxy[tpos] > nxy[fpos] : + if nxy[fpos] = nxy[mpos] : + % first of multiple pages + llxy[tpos] := llxy[mpos] ; + lrxy[tpos] := lrxy[mpos] ; + urxy[tpos] := lrxy[mpos] shifted (0,par_line_height) ; + ulxy[tpos] := llxy[mpos] shifted (0,par_line_height) ; + boxgriddirection := down ; + elseif nxy[tpos] = nxy[mpos] : + % last of multiple pages + llxy[fpos] := ulxy[mpos] shifted (0,-par_line_height) ; + lrxy[fpos] := urxy[mpos] shifted (0,-par_line_height) ; + urxy[fpos] := urxy[mpos] ; + ulxy[fpos] := ulxy[mpos] ; + boxgriddirection := up ; + else : + % middle of multiple pages + llxy[fpos] := ulxy[mpos] shifted (0,-par_line_height) ; + lrxy[fpos] := urxy[mpos] shifted (0,-par_line_height) ; + urxy[fpos] := urxy[mpos] ; + ulxy[fpos] := ulxy[mpos] ; + llxy[tpos] := llxy[mpos] ; + lrxy[tpos] := lrxy[mpos] ; + urxy[tpos] := lrxy[mpos] shifted (0,par_line_height) ; + ulxy[tpos] := llxy[mpos] shifted (0,par_line_height) ; + boxgriddirection := up ; + fi ; + else : + % just one page + boxgriddirection := up ; + fi ; + + path txy, bxy, pxy, mxy ; + + txy := originpath ; % top + bxy := originpath ; % bottom + pxy := originpath ; % composed + + boolean lefthang, righthang, somehang ; + + % we only hang on the first of a multiple page background + + if nxy[mpos] > nxy[fpos] : + lefthang := righthang := somehang := false ; + else : + lefthang := (rh>0) ; righthang := (rh<0) ; somehang := false ; + fi ; + + if lefthang : + mxy := boundingbox (lref -- lref shifted (rh,ra*par_line_height)) ; + elseif righthang : + mxy := boundingbox (rref -- rref shifted (rh,ra*par_line_height)) ; + else : + mxy := originpath ; + fi ; + + if round(ypart llxy[fpos]) = round(ypart llxy[tpos]) : + + % We have a one-liner. Watch how er use the bottom pos for + % determining the height. + + llxy[fpos] := (xpart llxy[fpos], ypart llxy[tpos]) ; + ulxy[fpos] := (xpart ulxy[fpos], ypart ulxy[tpos]) ; + + else : + + % We have a multi-liner. For convenience we now correct the + % begin and end points for indentation. + + if lefthang and (round(ypart llxy[tpos]) >= round(ypart lrcorner mxy)) : + llxy[tpos] := (xpart lhref, ypart llxy[tpos]) ; + ulxy[tpos] := (xpart lhref, ypart ulxy[tpos]) ; + else : + llxy[tpos] := (xpart lref, ypart llxy[tpos]) ; + ulxy[tpos] := (xpart lref, ypart ulxy[tpos]) ; + fi ; + + if righthang and (round(ypart lrxy[fpos]) >= round(ypart llcorner mxy)) : + lrxy[fpos] := (xpart rhref, ypart lrxy[fpos]) ; + urxy[fpos] := (xpart rhref, ypart urxy[fpos]) ; + else : + lrxy[fpos] := (xpart rref, ypart lrxy[fpos]) ; + urxy[fpos] := (xpart rref, ypart urxy[fpos]) ; + fi ; + + fi ; + + somehang := (ypart ulxy[fpos]>ypart llcorner mxy) and + (ypart llxy[tpos]<ypart llcorner mxy) ; + + if round(ypart llxy[fpos]) = round(ypart llxy[tpos]) : + + % A (short) one-liner goes into the top box. + + txy := llxy[fpos] -- lrxy[tpos] -- urxy[tpos] -- ulxy[fpos] -- cycle ; + + elseif (round(ypart llxy[fpos]) = round(ypart ulxy[tpos])) and + (round(xpart lrxy[tpos]) < round(xpart llxy[fpos])) : + + % We have a sentence that spans two lines but with only end + % of line and begin of line segments. We need to take care of + % indentation. + + txy := llxy[fpos] -- lrxy[fpos] -- urxy[fpos] -- ulxy[fpos] -- cycle ; + bxy := llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- ulxy[tpos] -- cycle ; + + elseif (round(ypart llxy[fpos]) = round(ypart ulxy[tpos])) : + + % We have a sentence that spans two lines but with overlap. + + pxy := + llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- lrxy[fpos] -- + urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- ulxy[tpos] -- cycle ; + + elseif lefthang and somehang : + + % We have a sentence that spans more than two lines with + % left hanging indentation. + + pxy := + llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- + (xpart urxy[fpos],ypart urxy[tpos]) -- + urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- + if round(ypart urxy[tpos]) < round(ypart llcorner mxy) : + (xpart lrcorner mxy,ypart llxy[fpos]) -- + lrcorner mxy -- + (xpart llxy[tpos],ypart llcorner mxy) -- + else : + (xpart llxy[tpos],ypart llxy[fpos]) -- + fi + cycle ; + + elseif righthang and somehang : + + % We have a sentence that spans more than two lines with + % right hanging indentation. + + pxy := + llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- + if round(ypart urxy[tpos]) < round(ypart llcorner mxy) : + (xpart lrcorner mxy,ypart urxy[tpos]) -- + lrcorner mxy -- llcorner mxy -- + else : + (xpart urxy[fpos],ypart urxy[tpos]) -- + fi + urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- + (xpart llxy[tpos],ypart llxy[fpos]) -- + cycle ; + + else : + + % We have a sentence that spans more than two lines with + % no hanging indentation. + + pxy := + llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- + (xpart urxy[fpos],ypart urxy[tpos]) -- + urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- + (xpart llxy[tpos],ypart llxy[fpos]) -- + cycle ; + + fi ; + + pxy := simplified pxy ; + pxy := unspiked pxy ; + +enddef ; + +TopSkip := 0 ; % will move +StrutHeight := 0 ; % will move + +pair last_multi_par_shift ; last_multi_par_shift := origin ; + +def relocate_multipars (expr xy) = + last_multi_par_shift := xy ; + for i=1 upto nofmultipars : + multipars[i] := multipars[i] shifted last_multi_par_shift ; + endfor ; +enddef ; + +boolean compensate_multi_par_topskip ; +boolean span_multi_column_pars ; +boolean auto_multi_par_hsize ; +boolean enable_multi_par_fallback ; + +compensate_multi_par_topskip := true ; +span_multi_column_pars := false ; +auto_multi_par_hsize := false ; % true ; +enable_multi_par_fallback := true ; + +vardef multi_par_at_top (expr i) = + (round (ypart ulcorner multipars[i]) = round (ypart ulcorner (TextAreas[multirefs[i]] shifted last_multi_par_shift))) +enddef ; + +numeric nofmultipars ; nofmultipars := 0 ; + +boolean obey_multi_par_hang ; obey_multi_par_hang := true ; +boolean obey_multi_par_more ; obey_multi_par_more := true ; +boolean snap_multi_par_tops ; snap_multi_par_tops := true ; +boolean local_multi_par_area ; local_multi_par_area := false ; +boolean use_multi_par_region ; use_multi_par_region := false ; +boolean ignore_multi_par_page ; ignore_multi_par_page := false ; +boolean force_multi_par_chain ; force_multi_par_chain := true ; +boolean one_piece_multi_par ; one_piece_multi_par := false ; +boolean check_multi_par_chain ; check_multi_par_chain := true ; % extra page check + +boolean multi_column_first_page_hack; multi_column_first_page_hack := true ; % seems to work ok + +def simplify_multi_pars = % boundingbox ipv shape als optie + for i := 1 upto nofmultipars : + multipars[i] := boundingbox multipars[i] ; + endfor ; +enddef ; + +def save_multipar (expr i, l, p) = + nofmultipars := nofmultipars + 1 ; + multirefs[nofmultipars] := i ; + multilocs[nofmultipars] := l ; + multipars[nofmultipars] := unspiked (simplified p) ; +enddef ; + +def prepare_multi_pars (expr fn,fx,fy,fw,fh,fd, + tn,tx,ty,tw,th,td, + wn,wx,wy,ww,wh,wd, + pn,px,py,pw,ph,pd, + rw,rl,rr,rh,ra,ri) = + +% fill PlainTextArea withcolor red ; +% fill RegionTextArea withcolor green; + + if span_multi_column_pars : + begingroup ; + save TextAreas ; path TextAreas[] ; + save NOfTextAreas ; numeric NOfTextAreas ; + for i=1 upto NOfTextColumns : + TextAreas[i] := TextColumns[i] ; + endfor ; + NOfTextAreas := NOfTextColumns ; + fi ; + + last_multi_par_shift := origin ; + +% save _tx_, _ty_, _fx_, _fy_ ; +% if use_multi_par_region : +% _fx_ := fx ; %min(xpart ulcorner RegionTextArea,fx) ; +% _fy_ := fy ; %min(xpart ulcorner RegionTextArea,fy) ; +% _tx_ := min(xpart lrcorner RegionTextArea,tx) ; +% _ty_ := min(xpart lrcorner RegionTextArea,ty) ; +% else : +% _fx_ := fx ; +% _fy_ := fy ; +% _tx_ := tx ; +% _ty_ := ty ; +% fi ; + +% numeric fpos ; fpos := 1 ; initialize_box_pos(fpos,fn,_fx_,_fy_,fw,fh,fd) ; +% numeric tpos ; tpos := 2 ; initialize_box_pos(tpos,tn,_tx_,_ty_,tw,th,td) ; + numeric fpos ; fpos := 1 ; initialize_box_pos(fpos,fn,fx,fy,fw,fh,fd) ; + numeric tpos ; tpos := 2 ; initialize_box_pos(tpos,tn,tx,ty,tw,th,td) ; + numeric wpos ; wpos := 3 ; initialize_box_pos(wpos,wn,wx,wy,ww,wh,wd) ; + numeric ppos ; ppos := 4 ; initialize_box_pos(ppos,pn,px,py,pw,ph,pd) ; + + if local_multi_par_area : + RealPageNumber := fn ; + NOfTextAreas := 1 ; + NOfSavedTextAreas := 0 ; + TextAreas[1] := TextAreas[0] ; + TextColumns[1] := TextColumns[0] ; + nxy[fpos] := nxy[tpos] := nxy[wpos] := nxy[ppos] := RealPageNumber ; + elseif use_multi_par_region : + RealPageNumber := fn ; + NOfTextAreas := 1 ; + NOfSavedTextAreas := 0 ; + TextAreas[1] := RegionTextArea ; + TextColumns[1] := RegionTextArea ; + nxy[fpos] := nxy[tpos] := nxy[wpos] := nxy[ppos] := RealPageNumber ; + elseif ignore_multi_par_page : + RealPageNumber := fn ; + nxy[fpos] := nxy[tpos] := nxy[wpos] := nxy[ppos] := RealPageNumber ; + fi ; + + numeric par_strut_height, par_strut_depth, par_line_height ; + + set_par_line_height (ph, pd) ; + + numeric par_hang_indent, par_hang_after, par_indent, par_left_skip, par_right_skip ; + + par_hang_indent := rh ; + par_hang_after := ra ; + par_indent := ri ; + par_left_skip := rl ; + par_right_skip := rr ; + + pair par_start_pos ; + pair par_stop_pos ; + + par_start_pos := llxy[fpos] + if par_indent <0: shifted (-par_indent, 0) fi + if par_left_skip<0: shifted (-par_left_skip,0) fi ; + + par_stop_pos := lrxy[tpos] + if par_right_skip<0: shifted (par_right_skip,0) fi ; % nasty as the endpos can be shifted by rightskip + + if wxy[wpos]>0 : + left_skip := rl + xpart llxy[wpos] - xpart llxy[ppos] ; + right_skip := rw - left_skip - ww ; + else : + left_skip := rl ; + right_skip := rr ; + fi ; + + path multipar, multipars[] ; + numeric multiref, multirefs[] ; + numeric multiloc, multilocs[] ; % 1=begin 2=between 3=end + + numeric multi_par_pages ; multi_par_pages := nxy[tpos]-nxy[fpos]+1 ; + + % locals .. why can't i move these outside? + + vardef _pmp_set_multipar_ (expr i) = + ( (TextAreas[i] leftenlarged -left_skip) rightenlarged (-right_skip + if auto_multi_par_hsize : + rw - bbwidth(TextAreas[i]) fi) ) + enddef ; + + vardef _pmp_snapped_multi_pos_ (expr p) = + if snap_multi_par_tops : + if abs(ypart p - ypart ulcorner multipar) < par_line_height : + (xpart p,ypart ulcorner multipar) + else : + p + fi + else : + p + fi + enddef ; + + vardef _pmp_estimated_par_lines_ (expr h) = + round(h/par_line_height) + enddef ; + + vardef _pmp_top_multi_par_(expr p) = + (round(_pmp_estimated_par_lines_(bbheight(p)*par_line_height))=round(bbheight(p))) + enddef ; + + vardef _pmp_multi_par_tsc_(expr p) = + if _pmp_top_multi_par_(p) : TopSkipCorrection else : 0 fi + enddef ; + + vardef _pmp_estimated_multi_par_height_ (expr n, t) = + if round(par_line_height)=0 : + 0 + else : + save ok, h ; boolean ok ; + numeric h ; h := 0 ; + ok := false ; + if (nxy[fpos]=RealPageNumber-1) : + for i := 1 upto NOfSavedTextAreas : + if (InsideSavedTextArea(i,par_start_pos)) : + ok := true ; + h := h + _pmp_estimated_par_lines_(ypart ulxy[fpos] - ypart llcorner SavedTextAreas[i]) ; + elseif ok : + h := h + _pmp_estimated_par_lines_(bbheight(SavedTextAreas[i])) ; + fi ; + endfor ; + fi ; + if ok : + for i := 1 upto n-1 : + h := h + _pmp_estimated_par_lines_(bbheight(TextAreas[i])) ; + endfor ; + else : + % already: ok := false ; + for i := 1 upto n-1 : + if (InsideTextArea(i,par_start_pos)) : + ok := true ; + h := h + _pmp_estimated_par_lines_(ypart ulxy[fpos] - ypart llcorner TextAreas[i]) ; + elseif ok : + h := h + _pmp_estimated_par_lines_(bbheight(TextAreas[i])) ; + fi ; + endfor ; + fi ; + h + fi + enddef ; + + vardef _pmp_left_top_hang_ (expr same_area) = + + par_hang_after := ra + _pmp_estimated_par_lines_(py-fy) ; + + if (par_hang_indent>0) and (par_hang_after<0) and obey_multi_par_hang : + pair _ul_ ; _ul_ := (xpart ulcorner multipar, ypart _pmp_snapped_multi_pos_(ulxy[fpos])); + pair _pa_ ; _pa_ := _ul_ shifted (0,par_hang_after*par_line_height) ; + _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart llcorner multipar)) ; + if same_area : + _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart llxy[tpos])) ; + fi ; + if obey_multi_par_more and (round(par_line_height)>0) : + par_hang_after := min(0,round(par_hang_after + (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ; + fi ; + (xpart _ul_ + par_hang_indent, ypart lrxy[fpos]) -- + (xpart _ul_ + par_hang_indent, ypart _pa_) -- + (xpart ulcorner multipar, ypart _pa_) + else : + (xpart ulcorner multipar, ypart lrxy[fpos]) + fi + enddef ; + + vardef _pmp_right_top_hang_ (expr same_area) = + + par_hang_after := ra + _pmp_estimated_par_lines_(py-fy) ; + + if (par_hang_indent<0) and (par_hang_after<0) and obey_multi_par_hang : + pair _ur_ ; _ur_ := (xpart urcorner multipar, ypart _pmp_snapped_multi_pos_(urxy[fpos])) ; + pair _pa_ ; _pa_ := _ur_ shifted (0,par_hang_after*par_line_height) ; + _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart llcorner multipar)) ; + if same_area : + _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart _pmp_snapped_multi_pos_(ulxy[tpos]))) ; + fi ; + if obey_multi_par_more and (round(par_line_height)>0) : + par_hang_after := min(0,round(par_hang_after + (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ; + fi ; + (xpart urcorner multipar, ypart _pa_) -- + (xpart _ur_ + par_hang_indent, ypart _pa_) -- + (xpart _ur_ + par_hang_indent, ypart _pmp_snapped_multi_pos_(urxy[fpos])) + else : + (xpart urcorner multipar, ypart _pmp_snapped_multi_pos_(urxy[fpos])) + fi + enddef ; + + vardef _pmp_x_left_top_hang_ (expr i, t) = + par_hang_after := min(0,ra + _pmp_estimated_multi_par_height_(i,t)) ; + if (par_hang_indent>0) and (par_hang_after<0) : + pair _ul_ ; _ul_ := ulcorner multipar ; + pair _pa_ ; _pa_ := _ul_ shifted (0,par_hang_after*par_line_height) ; + _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ; + if t : + _pa_ := (xpart _pa_,max(ypart _pa_,ypart llxy[tpos])); + fi ; + if abs(ypart _pa_-ypart llxy[tpos])<par_line_height : + _pa_ := (xpart _pa_,ypart llxy[tpos]); + fi ; + if abs(ypart _pa_-ypart llcorner multipar)<par_line_height : + _pa_ := (xpart _pa_,ypart llcorner multipar); + fi ; + (xpart _ul_, ypart _pa_) -- + (xpart _ul_ + par_hang_indent, ypart _pa_) -- + (xpart _ul_ + par_hang_indent, ypart _ul_) + else : + ulcorner multipar + fi + enddef ; + + vardef _pmp_x_right_top_hang_ (expr i, t) = + par_hang_after := min(0,ra + _pmp_estimated_multi_par_height_(i,t)) ; + if (par_hang_indent<0) and (par_hang_after<0) : + pair _ur_ ; _ur_ := urcorner multipar ; + pair _pa_ ; _pa_ := _ur_ shifted (0,par_hang_after*par_line_height) ; + _pa_ := (xpart _pa_,max(ypart _pa_,ypart lrcorner multipar)) ; + if t : + _pa_ := (xpart _pa_,max(ypart _pa_,ypart _pmp_snapped_multi_pos_(urxy[tpos]))) ; + fi ; + (xpart _ur_ + par_hang_indent, ypart _ur_) -- + (xpart _ur_ + par_hang_indent, ypart _pa_) -- + (xpart _ur_, ypart _pa_) + else : + urcorner multipar + fi + enddef ; + + vardef _pmp_left_bottom_hang_ (expr same_area) = + pair _ll_, _sa_, _pa_ ; + _sa_ := if same_area : llxy[tpos] else : lrcorner multipar fi ; + if (par_hang_indent>0) and (par_hang_after>0) and obey_multi_par_hang : + _ll_ := (xpart ulcorner multipar, ypart _pmp_snapped_multi_pos_(ulxy[fpos])) ; + _pa_ := _ll_ shifted (0,-par_hang_after*par_line_height) ; + _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ; + if same_area : + _pa_ := (xpart _pa_,max(ypart _pa_,ypart _sa_)) ; + fi ; + if obey_multi_par_more and (round(par_line_height)>0) : + par_hang_after := max(0,round(par_hang_after - (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ; + fi ; + _pa_ -- + (xpart _pa_ + par_hang_indent,ypart _pa_) -- + (xpart _pa_ + par_hang_indent,ypart _sa_) + else : + (xpart llcorner multipar, ypart _sa_) + fi + enddef ; + + vardef _pmp_right_bottom_hang_ (expr same_area) = + pair _lr_, _sa_, _pa_ ; + _sa_ := if same_area : _pmp_snapped_multi_pos_(ulxy[tpos]) else : lrcorner multipar fi ; + if (par_hang_indent<0) and (par_hang_after>0) and obey_multi_par_hang : + _lr_ := (xpart urcorner multipar, ypart _pmp_snapped_multi_pos_(urxy[fpos])) ; + _pa_ := _lr_ shifted (0,-par_hang_after*par_line_height) ; + _pa_ := (xpart _pa_,max(ypart _pa_,ypart lrcorner multipar)) ; + if same_area : + _pa_ := (xpart _pa_,max(ypart _pa_,ypart _pmp_snapped_multi_pos_(ulxy[tpos]))) ; + fi ; + if obey_multi_par_more and (round(par_line_height)>0) : + par_hang_after := max(0,round(par_hang_after - (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ; + fi ; + (xpart _pa_ + par_hang_indent,ypart _sa_) -- + (xpart _pa_ + par_hang_indent,ypart _pa_) -- + _pa_ + else : + (xpart lrcorner multipar, ypart _sa_) + fi + enddef ; + + vardef _pmp_x_left_bottom_hang_ (expr i, t) = + pair _ll_, _sa_, _pa_ ; + _sa_ := if t : llxy[tpos] else : llcorner multipar fi ; + if (par_hang_indent>0) and (ra>0) : + par_hang_after := max(0,ra - _pmp_estimated_multi_par_height_(i,t)) ; + _ll_ := ulcorner multipar ; + _pa_ := _ll_ shifted (0,-par_hang_after*par_line_height) ; + _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ; + _pa_ := (xpart _pa_,max(ypart _pa_,ypart _sa_)) ; + % we need to compensate for topskip enlarged areas + if abs(ypart _pa_ - ypart _sa_) > par_line_height : + (xpart _pa_ + par_hang_indent,ypart _sa_) -- + (xpart _pa_ + par_hang_indent,ypart _pa_) -- + fi + _pa_ + else : + (xpart llcorner multipar, ypart _sa_) + fi + enddef ; + + vardef _pmp_x_right_bottom_hang_ (expr i, t) = + pair _lr_, _sa_, _pa_ ; + _sa_ := if t : _pmp_snapped_multi_pos_(ulxy[tpos]) else : llcorner multipar fi ; + if (par_hang_indent<0) and (ra>0) : + par_hang_after := max(0,ra - _pmp_estimated_multi_par_height_(i, t)) ; + _lr_ := urcorner multipar ; + _pa_ := _lr_ shifted (0,-par_hang_after*par_line_height) ; + _pa_ := (xpart _pa_,max(ypart _pa_,ypart lrcorner multipar)) ; + _pa_ := (xpart _pa_,max(ypart _pa_,ypart _sa_)) ; + % we need to compensate for topskip enlarged areas + _pa_ + if abs(ypart _pa_ - ypart _sa_) > par_line_height : + -- (xpart _pa_ + par_hang_indent,ypart _pa_) + -- (xpart _pa_ + par_hang_indent,ypart _sa_) + fi + else : + (xpart lrcorner multipar, ypart _sa_) + fi + enddef ; + + % def _pmp_test_multipar_ = + % multipar := boundingbox multipar ; + % enddef ; + + % first loop + + ii := 0 ; nn := NOfTextAreas+1 ; nofmultipars := 0 ; + + if enable_multi_par_fallback and (nxy[fpos]=RealPageNumber) + and (nxy[tpos]=RealPageNumber) and not (InsideSomeTextArea(lxy[fpos]) and InsideSomeTextArea(rxy[tpos])) : + + % fallback + + % multipar := + % llxy[fpos] -- + % lrxy[tpos] -- + % urxy[tpos] -- + % ulxy[fpos] -- cycle ; + % + % save_multipar (1,1,multipar) ; + + % we need to take the boundingbox because there can be + % more lines and we want a proper rectange + + multipar := + ulxy[fpos] -- + urxy[tpos] -- + lrxy[fpos] -- + llxy[tpos] -- cycle ; + + save_multipar (1,1,boundingbox(multipar)) ; + + else : + + % normal + + for i=1 upto NOfTextAreas : + + TopSkipCorrection := 0 ; + + multipar := _pmp_set_multipar_(i) ; + + % watch how we compensate for negative indentation + + if (nxy[fpos]=RealPageNumber) and (InsideTextArea(i,par_start_pos)) : + + % first one in chain + + ii := i ; + + if (nxy[tpos]=RealPageNumber) and (InsideTextArea(i,par_stop_pos)) : + + % in same area + + nn := i ; + + if compensate_multi_par_topskip and (round(LineHeight-ph-pd)=0) : + + TopSkipCorrection := TopSkip - StrutHeight ; + + if round(ypart ulxy[fpos] + TopSkipCorrection) = round(ypart ulcorner TextAreas[i]) : + ulxy[fpos] := ulxy[fpos] shifted (0,TopSkipCorrection) ; + urxy[fpos] := urxy[fpos] shifted (0,TopSkipCorrection) ; + else : + TopSkipCorrection := 0 ; + fi ; + + fi ; + + if ypart llxy[fpos] = ypart llxy[tpos] : + + multipar := + llxy[fpos] -- + lrxy[tpos] -- + _pmp_snapped_multi_pos_(urxy[tpos]) -- + _pmp_snapped_multi_pos_(ulxy[fpos]) -- + cycle ; + + save_multipar (i,1,multipar) ; + + elseif (ypart llxy[fpos] = ypart ulxy[tpos]) and (xpart llxy[tpos] < xpart llxy[fpos]) : + + % two loners + + multipar := if obey_multi_par_hang : + + _pmp_right_bottom_hang_(true) -- + _pmp_right_top_hang_(true) -- + _pmp_snapped_multi_pos_(urxy[fpos]) -- + lrxy[fpos] -- + + else : + + llxy[fpos] -- + (xpart urcorner multipar, ypart llxy[fpos]) -- + (xpart urcorner multipar, ypart ulxy[fpos]) -- + _pmp_snapped_multi_pos_(ulxy[fpos]) -- + + fi cycle ; + + save_multipar (i,1,multipar) ; + + multipar := _pmp_set_multipar_(i) ; + + multipar := if obey_multi_par_hang : + + _pmp_left_bottom_hang_(true) -- + llxy[tpos] -- + _pmp_snapped_multi_pos_(ulxy[tpos]) -- + _pmp_left_top_hang_(true) -- + + else : + + (xpart llcorner multipar, ypart llxy[tpos]) -- + llxy[tpos] -- + _pmp_snapped_multi_pos_(ulxy[tpos]) -- + (xpart llcorner multipar, ypart ulxy[tpos]) -- + + fi cycle ; + + save_multipar (i,1,multipar) ; + + else : + + multipar := if obey_multi_par_hang : + + _pmp_left_bottom_hang_(true) -- + llxy[tpos] -- + _pmp_snapped_multi_pos_(ulxy[tpos]) -- + _pmp_right_bottom_hang_(true) -- + _pmp_right_top_hang_(true) -- + _pmp_snapped_multi_pos_(urxy[fpos]) -- + lrxy[fpos] -- + _pmp_left_top_hang_(true) -- + + else : + + (xpart llcorner multipar, ypart llxy[tpos]) -- + llxy[tpos] -- + _pmp_snapped_multi_pos_(ulxy[tpos]) -- + (xpart lrcorner multipar, ypart ulxy[tpos]) -- + (xpart urcorner multipar, ypart urxy[fpos]) -- + _pmp_snapped_multi_pos_(urxy[fpos]) -- + lrxy[fpos] -- + (xpart ulcorner multipar, ypart lrxy[fpos]) -- + + fi cycle ; + + save_multipar (i,1,multipar) ; + + fi ; + + else : + + multipar := if obey_multi_par_hang : + + _pmp_left_bottom_hang_(false) -- + _pmp_right_bottom_hang_(false) -- + _pmp_right_top_hang_(false) -- + _pmp_snapped_multi_pos_(urxy[fpos]) -- + lrxy[fpos] -- + _pmp_left_top_hang_(false) -- + + else : + + llcorner multipar -- + lrcorner multipar -- + (xpart urcorner multipar, ypart urxy[fpos]) -- + _pmp_snapped_multi_pos_(urxy[fpos]) -- + lrxy[fpos] -- + (xpart ulcorner multipar, ypart lrxy[fpos]) -- + + fi cycle ; + + save_multipar (i,1,multipar) ; + + fi ; + + elseif (nxy[tpos]=RealPageNumber) and (InsideTextArea(i,par_stop_pos)) : + + % last one in chain + + nn := i ; + + if obey_multi_par_hang and obey_multi_par_more : + + multipar := + _pmp_x_left_top_hang_(i,true) -- + _pmp_x_right_top_hang_(i,true) -- + _pmp_x_right_bottom_hang_(i,true) -- + _pmp_snapped_multi_pos_(ulxy[tpos]) -- + llxy[tpos] -- + _pmp_x_left_bottom_hang_(i,true) -- + cycle ; + + else : + + multipar := + ulcorner multipar -- + urcorner multipar -- + (xpart lrcorner multipar, ypart urxy[tpos]) -- + _pmp_snapped_multi_pos_(ulxy[tpos]) -- + llxy[tpos] -- + (xpart llcorner multipar, ypart llxy[tpos]) -- + cycle ; + + fi ; + + save_multipar (i,3,multipar) ; + + elseif multi_column_first_page_hack and ((nxy[fpos]=RealPageNumber) and (nxy[tpos]>=RealPageNumber) and (NOfTextColumns>1)) : + + save_multipar (i,2,multipar) ; + + else : + % handled later + fi ; + + endfor ; + + + % second loop + + if force_multi_par_chain or (ii > 1) : + + for i=ii+1 upto nn-1 : + + % rest of chain / todo : hang + + % hm, the second+ column in column sets now gets lost in a NOfTextColumns + + if (not check_multi_par_chain) or ((nxy[fpos]<RealPageNumber) and (nxy[tpos]>RealPageNumber)) : + + multipar := _pmp_set_multipar_(i) ; + + if obey_multi_par_hang and obey_multi_par_more : + + multipar := + _pmp_x_left_top_hang_(i,false) -- + _pmp_x_right_top_hang_(i,false) -- + _pmp_x_right_bottom_hang_(i,false) -- + _pmp_x_left_bottom_hang_(i,false) -- + cycle ; + + fi ; + + save_multipar(i,2,multipar) ; + + fi ; + + endfor ; + + fi ; + + % end of normal/fallback + + fi ; + + if span_multi_column_pars : + endgroup ; + fi ; + + % potential safeguard: + + % for i=1 upto nofmultipars : + % if length p <= 4 : + % multipars[i] := boundingbox(multipars[i]) ; + % fi ; + % end ; + + % quick hack for gb: + + one_piece_multi_par := (nofmultipars=1) and (pn=tn) ; + +enddef ; + +def boxgridoptions = withcolor .8red enddef ; +def boxlineoptions = withcolor .8blue enddef ; +def boxfilloptions = withcolor .8white enddef ; + +numeric boxgridtype ; boxgridtype := 0 ; +numeric boxlinetype ; boxlinetype := 1 ; +numeric boxfilltype ; boxfilltype := 1 ; +numeric boxdashtype ; boxdashtype := 0 ; +pair boxgriddirection ; boxgriddirection := up ; +numeric boxgridwidth ; boxgridwidth := 1pt ; +numeric boxlinewidth ; boxlinewidth := 1pt ; +numeric boxlineradius ; boxlineradius := 0pt ; +numeric boxfilloffset ; boxfilloffset := 0pt ; +numeric boxgriddistance ; boxgriddistance := .5cm ; +numeric boxgridshift ; boxgridshift := 0pt ; + +def draw_box = + draw pxy boxlineoptions withpen pencircle scaled boxlinewidth ; + draw lxy -- rxy boxlineoptions withpen pencircle scaled boxgridwidth ; +enddef ; + +def draw_par = % 1 2 3 11 12 + do_draw_par(pxy) ; do_draw_par(txy) ; do_draw_par(bxy) ; + for i = pxy, txy, bxy : + if boxgridtype = 1 : + boxgriddirection := origin ; + draw baseline_grid (i,boxgriddirection,true ) boxgridoptions ; + elseif boxgridtype = 2 : + boxgriddirection := origin ; + draw baseline_grid (i,boxgriddirection,false) boxgridoptions ; + elseif boxgridtype = 3 : + boxgriddirection := origin ; + draw baseline_grid (i,boxgriddirection,true ) boxgridoptions ; + draw baseline_grid (i,boxgriddirection,true ) shifted (0,ExHeight) boxgridoptions ; + elseif boxgridtype = 4 : + boxgriddirection := origin ; + draw baseline_grid (i,boxgriddirection,true ) shifted (0,ExHeight/2) boxgridoptions ; + elseif boxgridtype = 11 : + draw graphic_grid(i,boxgriddistance,boxgriddistance,boxgriddistance/2,boxgriddistance/2) ; + elseif boxgridtype = 12 : + draw graphic_grid(i,boxgriddistance,boxgriddistance,0,0) ; + fi ; + endfor ; +enddef ; + +def do_show_par (expr p, r, c) = + if length(p) > 2 : + for i=0 upto length(p) : + draw fullcircle scaled r shifted point i of p withpen pencircle scaled .5pt withcolor c ; + endfor ; + fi ; + draw p withpen pencircle scaled .5pt withcolor c ; +enddef ; + +def show_par = + if length(mxy) > 2 : + draw mxy dashed evenly withpen pencircle scaled .5pt withcolor .5white ; + fi ; + do_show_par(txy, 4pt, .5green) ; + do_show_par(bxy, 6pt, .5blue ) ; + do_show_par(pxy, 8pt, .5red ) ; + draw pref withpen pencircle scaled 2pt ; +enddef ; + +def sort_multi_pars = + if nofmultipars>1 : + begingroup ; + save _p_, _n_ ; path _p_ ; numeric _n_ ; + for i := 1 upto nofmultipars : + if multilocs[i] = 3 : + _p_ := multipars[nofmultipars] ; + multipars[nofmultipars] := multipars[i] ; + multipars[i] := _p_ ; + _n_ := multirefs[nofmultipars] ; + multirefs[nofmultipars] := multirefs[i] ; + multirefs[i] := _n_ ; + _n_ := multilocs[nofmultipars] ; + multilocs[nofmultipars] := multilocs[i] ; + multilocs[i] := _n_ ; + fi ; + endfor ; + endgroup ; + fi ; +enddef ; + +def collapse_multi_pars = + if nofmultipars>1 : + begingroup ; + save _nofmultipars_ ; numeric _nofmultipars_ ; + _nofmultipars_ := 1 ; + sort_multi_pars ; % block not in order: 1, 3, 2.... + for i:=1 upto nofmultipars-1 : + if (round(xpart(llcorner multipars[i]-llcorner multipars[i+1]))=0) and + (round(xpart(lrcorner multipars[i]-lrcorner multipars[i+1]))=0) : + multilocs[_nofmultipars_] := multilocs[i+1] ; + multirefs[_nofmultipars_] := multirefs[i+1] ; + multipars[_nofmultipars_] := + ulcorner multipars[_nofmultipars_] -- + urcorner multipars[_nofmultipars_] -- + lrcorner multipars[i+1] -- + llcorner multipars[i+1] -- cycle ; + else : + _nofmultipars_ := _nofmultipars_ + 1 ; + multipars[_nofmultipars_] := multipars[i+1] ; + multilocs[_nofmultipars_] := multilocs[i+1] ; + multirefs[_nofmultipars_] := multirefs[i+1] ; + fi ; + endfor ; + nofmultipars := _nofmultipars_ ; + endgroup ; + fi ; +enddef ; + +def draw_multi_pars = + for i=1 upto nofmultipars : + do_draw_par(multipars[i]) ; + if boxgridtype= 1 : + draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) ; + elseif boxgridtype= 2 : + draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,false) ; + elseif boxgridtype= 3 : + draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) ; + draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) shifted (0,ExHeight) ; + elseif boxgridtype= 4 : + draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) shifted (0,ExHeight/2) ; + elseif boxgridtype=11 : + draw graphic_grid(multipars[i],boxgriddistance,boxgriddistance,boxgriddistance/2,boxgriddistance/2) ; + elseif boxgridtype=12 : + draw graphic_grid(multipars[i],boxgriddistance,boxgriddistance,0,0) ; + fi ; + endfor ; +enddef ; + +def show_multi_pars = + for i=1 upto nofmultipars : + do_show_par(multipars[i], 6pt, .5blue) ; + endfor ; +enddef ; + +vardef do_draw_par (expr p) = + if (length p>2) and (bbwidth(p)>1) and (bbheight(p)>1) : + save pp ; path pp ; + if (boxlineradius>0) and (boxlinetype=2) : + pp := p cornered boxlineradius ; + else : + pp := p ; + fi ; + if boxfilltype>0 : + if boxfilloffset>0 : + % temporary hack + begingroup ; + interim linejoin := mitered ; + filldraw pp boxfilloptions withpen pencircle scaled (2*boxfilloffset) ; + endgroup ; + else : + fill pp boxfilloptions ; + fi ; + fi ; + if boxlinetype>0 : + draw pp boxlineoptions withpen pencircle scaled boxlinewidth ; + fi ; + fi ; +enddef ; + +vardef baseline_grid (expr pxy, pdir, at_baseline) = + save width ; width := bbwidth(pxy) ; + save height ; height := bbheight(pxy) ; + if (par_line_height>0) and (height>1) and (width>1) and (boxgridwidth>0) : + save i, grid, bb ; picture grid ; pair start ; path bb ; + def _do_ (expr start) = + % 1 = normal, 2 = with background (i.e. no shine-through) + if boxdashtype = 2 : + draw start -- start shifted (width,0) + withpen pencircle scaled boxgridwidth + boxfilloptions ; + fi ; + draw start -- start shifted (width,0) + if boxdashtype > 0 : + dashed evenly + fi + withpen pencircle scaled boxgridwidth + boxgridoptions ; + enddef ; + grid := image ( % fails with inlinespace + if pdir=up : + for i = if at_baseline : par_strut_depth else : 0 fi step par_line_height until max(height,par_line_height) : + _do_ (llcorner pxy shifted (0,+i)) ; + endfor ; + else : + for i = if at_baseline : par_strut_height else : 0 fi step par_line_height until height : + _do_ (ulcorner pxy shifted (0,-i)) ; + endfor ; + fi ; + ) ; + clip grid to pxy ; + bb := boundingbox grid ; + grid := grid shifted (0,boxgridshift) ; + setbounds grid to bb ; + grid + else : + nullpicture + fi +enddef ; + +vardef graphic_grid (expr pxy, dx, dy, x, y) = + if (bbheight(pxy)>dy) and (bbwidth(pxy)>dx) and (boxgridwidth>0) : + save grid ; picture grid ; + grid := image ( + for i = xpart llcorner pxy step dx until xpart lrcorner pxy : + draw (i,ypart llcorner pxy) -- (i,ypart ulcorner pxy) withpen pencircle scaled boxgridwidth ; + endfor ; + for i = ypart llcorner pxy step dy until ypart ulcorner pxy : + draw (xpart llcorner pxy,i) -- (xpart lrcorner pxy,i) withpen pencircle scaled boxgridwidth ; + endfor + ) shifted (x,y) ; + clip grid to pxy ; + grid + else : + nullpicture + fi +enddef ; + +def anchor_box (expr n,x,y,w,h,d) = + currentpicture := currentpicture shifted (-x,-y) ; +enddef ; + +let draw_area = draw_box ; +let anchor_area = anchor_box ; +let anchor_par = anchor_box ; + +numeric sync_n[], sync_p[][], sync_w[][], sync_h[][], sync_d[][], sync_t[][] ; +pair sync_xy[][] ; color sync_c[][] ; + +def ResetSyncTasks = + path SyncPaths[] ; numeric SyncTasks[], NOfSyncPaths, CurrentSyncClass ; + NOfSyncPaths := CurrentSyncClass := 0 ; + if unknown SyncLeftOffset : numeric SyncLeftOffset ; SyncLeftOffset := 0 ; fi ; + if unknown SyncWidth : numeric SyncWidth ; SyncWidth := 0 ; fi ; + if unknown SyncThreshold : numeric SyncThreshold ; SyncThreshold := LineHeight ; fi ; + if unknown SyncColor : color SyncColor ; SyncColor := .5white ; fi ; + if (SyncLeftOffset = 0) and (SyncWidth = 0) : + SyncWidth := if known TextWidth : TextWidth else : -1cm fi ; + fi ; +enddef ; + +ResetSyncTasks ; + +vardef SyncBox(expr n, i, leftoffset, width, topoffset, bottomoffset) = + save o ; pair o ; o := (xpart llcorner PlainTextArea,ypart sync_xy[n][i]) ; + o shifted (leftoffset,sync_h[n][i]+topoffset) -- + o shifted (width+leftoffset,sync_h[n][i]+topoffset) -- + o shifted (width+leftoffset,bottomoffset) -- + o shifted (leftoffset,bottomoffset) -- cycle +enddef ; + +def SetSyncColor(expr n, i, c) = + sync_c[n][i] := c ; +enddef ; + +def SetSyncThreshold(expr n, i, th) = + sync_th[n][i] := th ; +enddef ; + +vardef TheSyncColor(expr n, i) = + if known sync_c[n][i] : sync_c[n][i] else : SyncColor fi +enddef ; + +vardef TheSyncThreshold(expr n, i) = + if known sync_th[n][i] : sync_th[n][i] else : SyncThreshold fi +enddef ; + +vardef PrepareSyncTasks(expr n, collapse, extendtop, prestartnext) = + ResetSyncTasks ; + if known sync_n[n] : + CurrentSyncClass := n ; + save ok, l, d ; boolean ok ; ok := false ; NOfSyncPaths := l := 0 ; + for i=1 upto sync_n[n] : + if RealPageNumber > sync_p[n][i] : + l := i ; + elseif RealPageNumber = sync_p[n][i] : + NOfSyncPaths := NOfSyncPaths + 1 ; + if not ok : + if i>1 : + if sync_t[n][i-1] = sync_t[n][i] : + SyncPaths[NOfSyncPaths] := SyncBox(n, i, SyncLeftOffset, SyncWidth, PaperHeight, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i ; + else : + SyncPaths[NOfSyncPaths] := SyncBox(n, i-1, SyncLeftOffset, SyncWidth, PaperHeight, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i-1 ; + NOfSyncPaths := NOfSyncPaths + 1 ; + SyncPaths[NOfSyncPaths] := SyncBox(n, i, SyncLeftOffset, SyncWidth, 0, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i ; + fi ; + else : + SyncPaths[NOfSyncPaths] := SyncBox(n, i, SyncLeftOffset, SyncWidth, 0, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i ; + fi ; + else : + SyncPaths[NOfSyncPaths] := SyncBox(n, i, SyncLeftOffset, SyncWidth, 0, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i ; + fi ; + ok := true ; + fi ; + endfor ; + if (NOfSyncPaths = 0) and (l > 0) : + NOfSyncPaths := 1 ; + SyncPaths[NOfSyncPaths] := SyncBox(n, l, SyncLeftOffset, SyncWidth, PaperHeight, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := l ; + fi ; + if NOfSyncPaths > 0 : + for i = 1 upto NOfSyncPaths-1 : + SyncPaths[i] := topboundary SyncPaths[i] -- reverse topboundary SyncPaths[i+1] -- cycle ; + endfor ; + if unknown SyncThresholdMethod : + numeric SyncThresholdMethod ; SyncThresholdMethod := 2 ; + fi ; + if extendtop : + if SyncThresholdMethod = 1 : + if NOfSyncPaths>1 : + d := ypart (ulcorner PlainTextArea - sync_xy[n][SyncTasks[2]]) ; + if (SyncTasks[2]>1) and (d > 0pt) and (d <= TheSyncThreshold(n,sync_t[n][SyncTasks[2]])) and (sync_p[n][SyncTasks[2]] = RealPageNumber) : + SyncPaths[2] := SyncPaths[2] topenlarged PaperHeight ; + fi ; + fi ; + else : + for i = 1 upto NOfSyncPaths : + d := ypart (ulcorner PlainTextArea - sync_xy[n][SyncTasks[i]]) ; + if (d > 0) and (d <= TheSyncThreshold(n,sync_t[n][SyncTasks[i]])) and (sync_p[n][SyncTasks[i]] = RealPageNumber) : + SyncPaths[i] := SyncPaths[i] topenlarged PaperHeight ; + fi ; + endfor ; + fi ; + fi ; + if prestartnext : + if NOfSyncPaths>1 : + if SyncTasks[NOfSyncPaths] < sync_n[n] : % there is a next one + d := ypart (ulcorner PlainTextArea - sync_xy[n][SyncTasks[NOfSyncPaths]+1]) ; + if (d > 0) and (d <= TheSyncThreshold(n, sync_t[n][SyncTasks[i]])) and (sync_p[n][SyncTasks[NOfSyncPaths]+1] = RealPageNumber+1) : + SyncPaths[NOfSyncPaths+1] := + (xpart ulcorner SyncPaths[NOfSyncPaths],ypart llcorner PlainTextArea) -- + (xpart urcorner SyncPaths[NOfSyncPaths],ypart llcorner PlainTextArea) -- + lrcorner SyncPaths[NOfSyncPaths] -- + llcorner SyncPaths[NOfSyncPaths] -- cycle ; + SyncTasks[NOfSyncPaths+1] := SyncTasks[NOfSyncPaths]+1 ; + NOfSyncPaths := NOfSyncPaths + 1 ; + fi ; + fi ; + fi ; + else : + if NOfSyncPaths>1 : + d := ypart (sync_xy[n][SyncTasks[NOfSyncPaths]] - llcorner PlainTextArea) ; + if (d < TheSyncThreshold(n, SyncTasks[NOfSyncPaths])) : + NOfSyncPaths := NOfSyncPaths - 1 ; + SyncPaths[NOfSyncPaths] := SyncPaths[NOfSyncPaths] bottomenlarged PaperHeight ; + fi ; + fi ; + fi ; + if (NOfSyncPaths>1) and collapse : + save j ; numeric j ; j := 1 ; + for i = 2 upto NOfSyncPaths : + if sync_t[n][SyncTasks[i]] = sync_t[n][SyncTasks[j]] : + SyncPaths[j] := boundingbox image (draw SyncPaths[i] ; draw SyncPaths[j] ; ) ; + SyncTasks[j] := SyncTasks[i] ; + else : + j := j + 1 ; + SyncPaths[j] := SyncPaths[i] ; + SyncTasks[j] := SyncTasks[i] ; + fi ; + endfor ; + NOfSyncPaths := j ; + fi ; + fi ; + fi ; +enddef ; + +def SyncTask(expr n) = + if known SyncTasks[n] : SyncTasks[n] else : 0 fi +enddef ; + +def FlushSyncTasks = + for i = 1 upto NOfSyncPaths : + ProcessSyncTask(SyncPaths[i], TheSyncColor(CurrentSyncClass,sync_t[CurrentSyncClass][SyncTasks[i]])) ; + endfor ; +enddef ; + +def ProcessSyncTask(expr p, c) = + fill p withcolor c ; +enddef ; diff --git a/metapost/context/base/mpiv/mp-cows.mpiv b/metapost/context/base/mpiv/mp-cows.mpiv new file mode 100644 index 000000000..3ad1a98f5 --- /dev/null +++ b/metapost/context/base/mpiv/mp-cows.mpiv @@ -0,0 +1,156 @@ +%D \module +%D [ file=mp-cows.mpiv, +%D version=2015.05.27, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=the cow, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +if known context_cows : endinput ; fi ; + +boolean context_cows ; context_cows := true ; + +picture cow ; cow := image ( + fill (245.449005,600.340027)..controls (242.781006,599.398010) and (239.621002,596.020020)..(237.671997,594.070007) + ..controls (236.738007,584.421997) and (244.578003,583.629028)..(250.199005,577.440979) + ..controls (258.769989,573.698975) and (251.210999,567.718994)..(256.179993,557.421997) + ..controls (257.039001,550.940979) and (257.898010,543.890991)..(255.309006,539.781006) + ..controls (249.479996,538.921997) and (247.968994,540.218994)..(246.891006,531.429993) + ..controls (246.309006,526.968994) and (231.770004,529.059021)..(229.031006,538.270020) + ..controls (227.089996,544.968994) and (221.328003,546.698975)..(217.800995,543.171997) + ..controls (213.770004,538.059021) and (215.781006,531.218994)..(217.800995,527.468994) + ..controls (224.929993,517.320007) and (212.039001,511.421997)..(205.128998,516.737976) + 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See mreadme.pdf for +%C details. + +if known context_crop : endinput ; fi ; + +boolean context_crop ; context_crop := true ; + +vardef crop_marks_lines (expr box, len, offset, nx, ny) = + save p ; picture p ; save w, h, x, y ; numeric w, h, x, y ; + p := image ( + x := if nx = 0 : 1 else : nx - 1 fi ; + y := if ny = 0 : 1 else : ny - 1 fi ; + w := bbwidth (box) / x ; + h := bbheight(box) / y ; + for i=0 upto y : + draw ((llcorner box) -- (llcorner box) shifted (-len,0)) shifted (-offset,i*h) ; + draw ((lrcorner box) -- (lrcorner box) shifted ( len,0)) shifted ( offset,i*h) ; + endfor ; + for i=0 upto x : + draw ((llcorner box) -- (llcorner box) shifted (0,-len)) shifted (i*w,-offset) ; + draw ((ulcorner box) -- (ulcorner box) shifted (0, len)) shifted (i*w, offset) ; + endfor ; + ) ; + setbounds p to box ; + p +enddef ; + +vardef crop_marks_cmyk = + save p ; picture p ; p := image ( + fill ulcircle scaled 12.5 withcolor (1,0,0,0) ; + fill urcircle scaled 12.5 withcolor (0,1,0,0) ; + fill lrcircle scaled 12.5 withcolor (0,0,1,0) ; + fill llcircle scaled 12.5 withcolor (0,0,0,1) ; + draw (-10,0) -- (10,0) ; + draw (0,-10) -- (0,10) ; + draw fullcircle scaled 12.5 ; + ) ; + setbounds p to fullsquare scaled 20 ; + p +enddef ; + +vardef crop_marks_gray = + save p ; picture p ; p := image ( + fill ulcircle scaled 12.5 withcolor (0.00) ; + fill urcircle scaled 12.5 withcolor (0.25) ; + fill lrcircle scaled 12.5 withcolor (0.50) ; + fill llcircle scaled 12.5 withcolor (0.75) ; + draw (-10,0) -- (10,0) ; + draw (0,-10) -- (0,10) ; + draw (-6,0) -- (6,0) withcolor white ; + draw (0,-6) -- (0,6) withcolor white ; + draw fullcircle scaled 12.5 ; + ) ; + setbounds p to fullsquare scaled 20 ; + p +enddef ; + +vardef crop_marks_cmykrgb = + save p ; picture p ; p := image ( + fill ulcircle scaled 15 withcolor (1,0,0) ; + fill urcircle scaled 15 withcolor (0,1,0) ; + fill lrcircle scaled 15 withcolor (0,0,1) ; + fill llcircle scaled 15 withcolor (.5,.5,.5) ; + fill ulcircle scaled 10 withcolor (1,0,0,0) ; + fill urcircle scaled 10 withcolor (0,1,0,0) ; + fill lrcircle scaled 10 withcolor (0,0,1,0) ; + fill llcircle scaled 10 withcolor (0,0,0,1) ; + draw (-10,0) -- (10,0) ; + draw (0,-10) -- (0,10) ; + draw fullcircle scaled 10 ; + draw fullcircle scaled 15 ; + ) ; + setbounds p to fullsquare scaled 20 ; + p +enddef ; + +vardef crop_color(expr c, h, w, dx, dy, ts) = + image ( + save p ; path p ; + for i=1 upto 6 : + p := fullsquare + xscaled w + yscaled h + shifted (dx,dy-i*h) ; + fill p + withcolor (crop_colors[i]*c) ; + draw textext("\format{'@0.2f'," & decimal crop_colors[i] & "}") + scaled ts + shifted center p withcolor white ; + endfor ; + ) +enddef ; + +vardef crop_gray(expr c, h, w, dx, dy, ts) = + image ( + save p ; path p ; + for i=.05 step .05 until 1 : + p := fullsquare + xscaled w + yscaled h + shifted (20*(i-1)*w+dx,dy) ; + fill p + withcolor (i*c) ; + draw textext("\format{'@0.2f'," & decimal i & "}") + scaled ts + shifted center p withcolor white ; + endfor ; + ) +enddef ; + +% draw crop_marks_cmyk shifted llcorner more ; +% draw crop_marks_cmyk shifted lrcorner more ; +% draw crop_marks_cmyk shifted ulcorner more ; +% draw crop_marks_cmyk shifted urcorner more ; + +def page_marks_add_color(expr width, height, length, offset) = % todo: namespace + + path page ; page := fullsquare xscaled width yscaled height ; + path more ; more := page enlarged (offset+length/2,offset+length/2) ; + + numeric crop_colors[] ; + crop_colors[1] := 1 ; + crop_colors[2] := 0.95 ; + crop_colors[3] := 0.75 ; + crop_colors[4] := 0.50 ; + crop_colors[5] := 0.25 ; + crop_colors[6] := 0.05 ; + + numeric h ; h := height / 20 ; + numeric w ; w := width / 20 ; + numeric d ; d := offset + length/2 ; + + draw crop_color((1,0,0,0),h,length,xpart ulcorner page - d, 10h,length/20) ; + draw crop_color((0,1,0,0),h,length,xpart ulcorner page - d,3.5h,length/20) ; + draw crop_color((0,0,1,0),h,length,xpart ulcorner page - d, -3h,length/20) ; + + draw crop_color((0,1,1,0),h,length,xpart urcorner page + d, 10h,length/20) ; + draw crop_color((1,0,1,0),h,length,xpart urcorner page + d,3.5h,length/20) ; + draw crop_color((1,1,0,0),h,length,xpart urcorner page + d, -3h,length/20) ; + + draw crop_gray((0,0,0,1),length, w,-xpart llcorner page,-ypart llcorner page + d ,w/20) ; + draw crop_gray((1,0,0,0),length/3,w,-xpart llcorner page, ypart llcorner page - d + 1length/3,w/20) ; + draw crop_gray((0,1,0,0),length/3,w,-xpart llcorner page, ypart llcorner page - d - 0length/3,w/20) ; + draw crop_gray((0,0,1,0),length/3,w,-xpart llcorner page, ypart llcorner page - d - 1length/3,w/20) ; + + setbounds currentpicture to page ; + +enddef ; + +def page_marks_add_marking(expr width, height, length, offset) = % todo: namespace + + path page ; page := fullsquare xscaled width yscaled height ; + path more ; more := page enlarged (offset+length/2,offset+length/2) ; + + draw crop_marks_gray shifted center(topboundary more) shifted (0, offset+length); + draw crop_marks_cmyk shifted center(bottomboundary more) shifted (0,-offset-length); + + setbounds currentpicture to page ; + +enddef ; + +def page_marks_add_lines(expr width, height, length, offset, nx, ny) = % todo: namespace + + path page ; page := fullsquare xscaled width yscaled height ; + path more ; more := page enlarged (offset+length/2,offset+length/2) ; + + draw crop_marks_lines(page,length,offset,nx,ny) ; + + setbounds currentpicture to page ; + +enddef ; + +def page_marks_add_number(expr width, height, length, offset, n) = % todo: namespace + + path page ; page := fullsquare xscaled width yscaled height ; + path more ; more := page enlarged (offset+length/2,offset+length/2) ; + + for s=llcorner more, lrcorner more, ulcorner more, urcorner more : + draw textext(decimal n) shifted s ; + endfor ; + + setbounds currentpicture to page ; + +enddef ; diff --git a/metapost/context/base/mpiv/mp-figs.mpiv b/metapost/context/base/mpiv/mp-figs.mpiv new file mode 100644 index 000000000..aac7c5ad2 --- /dev/null +++ b/metapost/context/base/mpiv/mp-figs.mpiv @@ -0,0 +1,47 @@ +%D \module +%D [ file=mp-figs.mpiv, +%D version=2003.01.15, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=figures, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +if known context_figs : endinput ; fi ; + +boolean context_figs ; context_figs := true ; + +% todo: check defined + +def registerfigure(expr name,width,height) = + begingroup ; + save s ; string s ; s := cleanstring(name) ; + scantokens( s & "_width := " & decimal(width )) ; + scantokens( s & "_height := " & decimal(height)) ; + endgroup ; +enddef ; + +vardef figuresize(expr name) = + save s, p ; string s ; pair p ; + s := cleanstring(name) ; + scantokens( "p := " & "(" & s & "_width" & "," & s & "_height" & ")" ) ; + p +enddef ; + +vardef figurewidth(expr name) = + xpart figuresize(name) +enddef ; + +vardef figureheight(expr name) = + ypart figuresize(name) +enddef ; + +let figuredimensions = figuresize ; % for old times sake + +def naturalfigure(expr name) = + externalfigure name xyscaled(figuresize(name)) +enddef ; diff --git a/metapost/context/base/mpiv/mp-fobg.mpiv b/metapost/context/base/mpiv/mp-fobg.mpiv new file mode 100644 index 000000000..f8b709572 --- /dev/null +++ b/metapost/context/base/mpiv/mp-fobg.mpiv @@ -0,0 +1,87 @@ +%D \module +%D [ file=mp-fobg.mp, +%D version=2004.03.12, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=Formatting Objects, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA / Hans Hagen \& Ton Otten}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +if known context_fobg : endinput ; fi ; + +boolean context_fobg ; context_fobg := true ; + +FoNone := 0 ; FoHidden := 1 ; FoDotted := 2 ; FoDashed := 3 ; FoSolid := 4 ; +FoDouble := 5 ; FoGroove := 6 ; FoRidge := 7 ; FoInset := 8 ; FoOutset := 9 ; +FoAll := 0 ; FoTop := 1 ; FoBottom := 2 ; FoLeft := 3 ; FoRight := 4 ; +FoMedium := .5pt ; FoThin := FoMedium/2 ; FoThick := FoMedium*2 ; + +color FoBackgroundColor, FoNoColor, FoLineColor[] ; FoNoColor := (-1,-1,-1) ; +numeric FoLineWidth[], FoLineStyle[] ; +boolean FoFrame, FoBackground, FoSplit ; + +FoFrame := FoBackground := FoSplit := false ; +FoBackgroundColor := white ; +FoDashFactor := .5 ; +FoDotFactor := .375 ; + +for i = FoAll upto FoRight : + FoLineColor[i] := black ; + FoLineWidth[i] := .5pt ; + FoLineStyle[i] := FoNone ; +endfor ; + +def DrawFoFrame(expr n, p) = + drawoptions(withcolor FoLineColor[n] withpen pencircle scaled FoLineWidth[n]) ; + if FoLineStyle[n] = FoNone : + % nothing + elseif FoLineStyle[n] = FoHidden : + % nothing + elseif FoLineStyle[n] = FoDotted : + draw p dashed (withdots scaled (FoDotFactor*FoLineWidth[n])) ; + elseif FoLineStyle[n] = FoDashed : + draw p dashed (evenly scaled (FoDashFactor*FoLineWidth[n])) ; + elseif FoLineStyle[n] = FoSolid : + draw p ; + elseif FoLineStyle[n] = FoDouble : + draw p enlarged FoLineWidth[n] ; draw p enlarged -FoLineWidth[n] ; + elseif FoLineStyle[n] = FoGroove : + draw p ; + draw p withpen pencircle scaled .5FoLineWidth[n] withcolor (inverted FoLineColor[n] softened .5) ; + elseif FoLineStyle[n] = FoRidge : + draw p withcolor (inverted FoLineColor[n] softened .5) ; + draw p withpen pencircle scaled .5FoLineWidth[n] ; + elseif FoLineStyle[n] = FoInset : + draw p ; draw p inset 2.5FoLineWidth[n] ; + elseif FoLineStyle[n] = FoOutset : + draw p ; draw p outset 2.5FoLineWidth[n] ; + fi ; +enddef ; + +primarydef p outset d = + ((lrcorner p -- urcorner p -- ulcorner p -- llcorner p -- cycle) + shifted (d*(-1,1)) cutbefore topboundary p) cutafter leftboundary p +enddef ; + +primarydef p inset d = + ((ulcorner p -- llcorner p -- lrcorner p -- urcorner p -- cycle) + shifted (d*(1,-1)) cutbefore bottomboundary p) cutafter rightboundary p +enddef ; + +vardef equalpaths(expr p, q) = + if length(p) = length(q) : + save ok ; boolean ok ; ok := true ; + for i = 0 upto length(p)-1 : + ok := ok and (round(point i of p) = round(point i of q)) ; + endfor ; + ok + else : + false + fi +enddef ; + +endinput ; diff --git a/metapost/context/base/mpiv/mp-form.mpiv b/metapost/context/base/mpiv/mp-form.mpiv new file mode 100644 index 000000000..88b15e097 --- /dev/null +++ b/metapost/context/base/mpiv/mp-form.mpiv @@ -0,0 +1,30 @@ +%D \module +%D [ file=mp-form.mpiv, +%D version=2011.10.14, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=form support, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +% The graph package will be replaced by our own variant using +% MetaPost 2 features and textext. + +if known context_form : endinput ; fi ; + +boolean context_form ; context_form := true ; + +string Fmfont_ ; Fmfont_ := "crap" ; + +% The following function accept a number or string that can be +% converted to a number by \LUA. The first argument is a format +% where @ can be used instead of %. The number is typeset in math +% mode and @3e is converted into @.3e. + +vardef mfun_format_number(expr fmt, i) = + "\ctxlua{metapost.formatnumber('" & fmt & "'," & if string i : i else : decimal i fi & ")}" +enddef ; diff --git a/metapost/context/base/mpiv/mp-func.mpiv b/metapost/context/base/mpiv/mp-func.mpiv new file mode 100644 index 000000000..b1b9d6d5d --- /dev/null +++ b/metapost/context/base/mpiv/mp-func.mpiv @@ -0,0 +1,87 @@ +%D \module +%D [ file=mp-func.mpiv, +%D version=2001.12.29, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=function hacks, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +%D Under construction. + +if known context_func : endinput ; fi ; + +boolean context_func ; context_func := true ; + +string mfun_pathconnectors[] ; + +mfun_pathconnectors[0] := "," ; +mfun_pathconnectors[1] := "--" ; +mfun_pathconnectors[2] := ".." ; +mfun_pathconnectors[3] := "..." ; +mfun_pathconnectors[4] := "---" ; + +def pathconnectors = mfun_pathconnectors enddef ; + +vardef mfun_function (expr f) (expr u, t, b, e, s) = + save x ; numeric x ; + save c ; string c ; c := if string f : f else : mfun_pathconnectors[f] fi ; + for xx := b step s until e : + hide (x := xx ;) + if xx > b : + scantokens(c) + fi + (scantokens(u),scantokens(t)) + endfor +enddef ; + +def function = mfun_function enddef ; % let doesn't work here +def constructedfunction = mfun_function enddef ; +def straightfunction = mfun_function (1) enddef ; +def curvedfunction = mfun_function (2) enddef ; + +% def punkedfunction = mfun_function (1) enddef ; % same as straightfunction +% def tightfunction = mfun_function (3) enddef ; % same as curvedfunction + +vardef mfun_constructedpath (expr f) (text t) = + save ok ; boolean ok ; ok := false ; + save c ; string c ; c := if string f : f else : mfun_pathconnectors[f] fi ; + for i=t : + if ok : + scantokens(c) + else : + ok := true ; + fi + i + endfor +enddef ; + +def constructedpath = mfun_constructedpath enddef ; % let doesn't work here +def straightpath = mfun_constructedpath (1) enddef ; +def curvedpath = mfun_constructedpath (2) enddef ; + +% def punkedpath = mfun_constructedpath (1) enddef ; % same as straightpath +% def tightpath = mfun_constructedpath (3) enddef ; % same as curvedpath + +vardef mfun_constructedpairs (expr f) (text p) = + save i ; i := -1 ; + save c ; string c ; c := if string f : f else : mfun_pathconnectors[f] fi ; + forever : + exitif unknown p[incr(i)] ; + if i>0 : + scantokens(c) + fi + p[i] + endfor +enddef ; + +def constructedpairs = mfun_constructedpairs enddef ; % let doesn't work here +def straightpairs = mfun_constructedpairs (1) enddef ; +def curvedpairs = mfun_constructedpairs (2) enddef ; + +% def punkedpairs = mfun_constructedpairs (1) enddef ; % same as straightpairs +% def tightpairs = mfun_constructedpairs (3) enddef ; % same as curvedpairs diff --git a/metapost/context/base/mpiv/mp-grap.mpiv b/metapost/context/base/mpiv/mp-grap.mpiv new file mode 100644 index 000000000..4fd8ee5bd --- /dev/null +++ b/metapost/context/base/mpiv/mp-grap.mpiv @@ -0,0 +1,1706 @@ +%D \module +%D [ file=mp-grap.mpiv, +%D version=2012.10.16, % 2008.09.08 and earlier, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=graph packagesupport, +%D author=Hans Hagen \& Alan Braslau, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +if known context_grap : endinput ; fi ; + +boolean context_grap ; context_grap := true ; + +% Below is a modified graph.mp + +show numbersystem, numberprecision ; + +%if epsilon/4 = 0 : +if numbersystem <> "double" : + errmessage "The graph macros require the double precision number system." ; + endinput ; +fi + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +% $Id : graph.mp,v 1.2 2004/09/19 21 :47 :10 karl Exp $ +% Public domain. + +% Macros for drawing graphs + +% begingraph(width,height) begin a new graph +% setcoords(xtype,ytype) sets up a new coordinate system (log,-linear..) +% setrange(lo,hi) set coord ranges (numeric and string args OK) +% gdraw <file or path> [with...] draw a line in current coord system +% gfill <file or path> [with...] fill a region using current coord system +% gdrawarrow .., gdrawdblarrow.. like gdraw, but with 1 or 2 arrowheads +% augment<path name>(loc) append given coordinates to a polygonal path +% glabel<suffix>(pic,loc) place label pic near graph coords or time loc +% gdotlabel<suffix>(pic,loc) same with dot +% OUT loc value for labels relative to whole graph +% gdata(file,s,text) read coords from file ; evaluate t w/ tokens s[] +% auto.<x or y> default x or y tick locations (for interation) +% tick.<bot|top|..>(fmt,u) draw centered tick from given side at u w/ format +% itick.<bot|top|..>(fmt,u) draw inward tick from given side at u w/ format +% otick.<bot|top|..>(fmt,u) draw outward tick at coord u ; label format fmt +% grid.<bot|top|..>(fmt,u) draw grid line at u with given side labeled +% autogrid([itick|.. bot|..],..) iterate over auto.x, auto.y, drawing tick/grids +% frame.[bot|top..] draw frame (or one side of the frame) +% graph_frame_needed := false ; after begingraph, not to draw a frame at all +% graph_background := color ; fill color for frame, if defined +% endgraph end of graph--the result is a picture + +% option `plot <picture>' draws picture at each path knot, turns off pen +% graph_template.<tickcmd> template paths for tick marks and grid lines +% graph_margin_fraction.low, +% graph_margin_fraction.high fractions determining margins when no setrange +% graph_log_marks[], graph_lin_marks, graph_exp_marks loop text strings used by auto.<x or y> +% graph_minimum_number_of_marks, graph_log_minimum numeric parameters used by auto.<x or y> +% Autoform is the format string used by autogrid +% Autoform_X, Autoform_Y if defined, are used instead + +% Other than the above-documented user interface, all externally visible names +% are of the form X_.<suffix>, Y_.<suffix>, or Z_.<suffix>, or they start +% with `graph_' + +% Used to depend on : + +% input string.mp + +% Private version of a few marith macros, fixed for double math... + +newinternal Mzero ; Mzero := -16384; % Anything at least this small is treated as zero +newinternal mlogten ; mlogten := mlog(10) ; +newinternal largestmantissa ; largestmantissa := 2**52 ; % internal double warningcheck +newinternal singleinfinity ; singleinfinity := 2**128 ; +newinternal doubleinfinity ; doubleinfinity := 2**1024 ; +%Mzero := -largestmantissa ; % Note that we get arithmetic overflows if we set to -doubleinfinity + +% Safely convert a number to mlog form, trapping zero. + +vardef graph_mlog primary x = + if unknown x: whatever + elseif x=0: Mzero + else: mlog(abs x) fi +enddef ; + +vardef graph_exp primary x = + if unknown x: whatever + elseif x<=Mzero: 0 + else: mexp(x) fi +enddef ; + +% and add the following for utility/completeness +% (replacing the definitions in mp-tool.mpiv). + +vardef logten primary x = + if unknown x: whatever + elseif x=0: Mzero + else: mlog(abs x)/mlog(10) fi +enddef ; + +vardef ln primary x = + if unknown x: whatever + elseif x=0: Mzero + else: mlog(abs x)/256 fi +enddef ; + +vardef exp primary x = + if unknown x: whatever + elseif x<= Mzero: 0 + else: (mexp 256)**x fi +enddef ; + +vardef powten primary x = + if unknown x: whatever + elseif x<= Mzero: 0 + else: 10**x fi +enddef ; + +% Convert x from mlog form into a pair whose xpart gives a mantissa and whose +% ypart gives a power of ten. + +vardef graph_Meform(expr x) = + if x<=Mzero : origin + else : + save e, m ; e=floor(x/mlogten)-3; m := mexp(x-e*mlogten) ; + if abs m<1000 : m := m*10 ; e := e-1 ; elseif abs m>=10000 : m := m/10 ; e := e+1 ; fi + (m, e) + fi +enddef ; + +% Modified from above. + +vardef graph_Feform(expr x) = + interim warningcheck :=0 ; + if x=0 : origin + else : + save e, m ; e=floor(if x<0 : -mlog(-x) else : mlog(x) fi/mlogten)-3; m := x/(10**e) ; + if abs m<1000 : m := m*10 ; e := e-1 ; elseif abs m>=10000 : m := m/10 ; e := e+1 ; fi + (m, e) + fi +enddef ; + +vardef graph_error(expr x,s) = + interim showstopping :=0 ; + show x ; errmessage s ; +enddef ; + +%%%%%%%%%%%%%%%%%%%%%%%% Data structures, begingraph %%%%%%%%%%%%%%%%%%%%%%%% + +vardef Z_@# = (X_@#,Y_@#) enddef ; % used in place of plain.mp's z convention + +def graph_suffix(suffix $) = % convert from x or y to X_ or Y_ + if str$="x" : X_ else : Y_ fi +enddef ; + +% New : + +save graph_background ; color graph_background ; % if defined, fill the frame. +save graph_close_file ; boolean graph_close_file ; graph_close_file = false ; + +def begingraph(expr w, h) = + begingroup + save X_, Y_ ; + X_.graph_coordinate_type = + Y_.graph_coordinate_type = linear ; % coordinate system for each axis + Z_.graph_dimensions = (w,h) ; % dimensions of graph not counting axes etc. + %also, Z_.low, Z_.high user-specified coordinate ranges in units used in graph_current_graph + + save graph_finished_graph ; + picture graph_finished_graph ; % the finished part of the graph + graph_finished_graph = nullpicture ; + save graph_current_graph ; + picture graph_current_graph ; % what has been drawn in current coords + graph_current_graph = nullpicture ; + save graph_current_bb ; + picture graph_current_bb ; % picture whose bbox is graph_current_graph's w/ linewidths 0 + graph_current_bb = nullpicture ; + save graph_last_drawn ; + picture graph_last_drawn ; % result of last gdraw or gfill + graph_last_drawn = nullpicture ; + save graph_last_path ; + path graph_last_path ; % last gdraw or gfill path in data coordinates. + save graph_plot_picture ; + picture graph_plot_picture ; % a picture from the `plot' option known when plot allowed + save graph_foreground ; + color graph_foreground ; % drawing color, if set. + save graph_label ; + picture graph_label[] ; % labels to place around the whole graph when it is done + save graph_autogrid_needed ; + boolean graph_autogrid_needed ; % whether autogrid is needed + graph_autogrid_needed = true ; + save graph_frame_needed ; + boolean graph_frame_needed ; % whether frame needs to be drawn + graph_frame_needed = true ; + save graph_number_of_arrowheads ; % number of arrowheads for next gdraw + graph_number_of_arrowheads = 0 ; + + if known graph_background : % new feature! + fill origin--(w,0)--(w,h)--(0,h)--cycle withcolor graph_background ; + fi +enddef ; + +% Additional variables not explained above : +% graph_modified_lower, graph_modified_higher pairs giving bounds used in auto<x or y> +% graph_exponent, graph_comma variables and macros used in auto<x or y> +% graph_modified_bias +% an offset to graph_modified_lower and graph_modified_higher to ease computing exponents +% Some additional variables function as constants. Most can be modified by the +% user to alter the behavior of these macros. +% Not very modifiable : log, linear, +% graph_frame_pair_a, graph_frame_pair_b, graph_margin_pair +% Modifiable : graph_template.suffix, +% graph_log_marks[], graph_lin_marks, graph_exp_marks, +% graph_minimum_number_of_marks, +% graph_log_minimum, Autoform + + +newinternal log, linear ; % coordinate system codes +log :=1 ; linear :=2; + +% note that mp-tool.mpiv defines log as log10. + +%%%%%%%%%%%%%%%%%%%%%% Coordinates : setcoords, setrange %%%%%%%%%%%%%%%%%%%%%% + +% Graph-related user input is `user graph coordinates' as specified by arguments +% to setcoords. +% `Internal graph coordinates' are used for graph_current_graph, graph_current_bb, Z_.low, Z_.high. +% Their meaning depends on the appropriate component of Z_.graph_coordinate_type : +% log means internal graph coords = mlog(user graph coords) +% -log means internal graph coords = -mlog(user graph coords) +% linear means internal graph coords = (user graph coords) +% -linear means internal graph coords = -(user graph coords) + + +vardef graph_set_default_bounds = % Set default Z_.low, Z_.high + forsuffixes $=low,high : + (if known X_$ : whatever else : X_$ fi, if known Y_$ : whatever else : Y_$ fi) + = graph_margin_fraction$[llcorner graph_current_bb,urcorner graph_current_bb] + + graph_margin_pair$ ; + endfor +enddef ; + +pair graph_margin_pair.low, graph_margin_pair.high ; +graph_margin_pair.high = -graph_margin_pair.low = (.00002,.00002) ; + +% Set $, $$, $$$ so that shifting by $ then transforming by $$ and then $$$ maps +% the essential bounding box of graph_current_graph into (0,0)..Z_.graph_dimensions. +% The `essential bounding box' is either what Z_.low and Z_.high imply +% or the result of ignoring pen widths in graph_current_graph. + +vardef graph_remap(suffix $,$$,$$$) = + save p_ ; + graph_set_default_bounds ; + pair p_, $ ; $=-Z_.low; + p_ = (max(X_.high-X_.low,.9), max(Y_.high-Y_.low,.9)) ; + transform $$, $$$ ; + forsuffixes #=$$,$$$ : xpart#=ypart#=xypart#=yxpart#=0 ; endfor + (Z_.high+$) transformed $$ = p_ ; + p_ transformed $$$ = Z_.graph_dimensions ; +enddef ; + +graph_margin_fraction.low=-.07 ; % bbox fraction for default range start +graph_margin_fraction.high=1.07 ; % bbox fraction for default range stop + +def graph_with_pen_and_color(expr q) = + withpen penpart q withcolor + if colormodel q=1 : + false + elseif colormodel q=3 : + (greypart q) + elseif colormodel q=5 : + (redpart q, greenpart q, bluepart q) + elseif colormodel q=7 : + (cyanpart q, magentapart q, yellowpart q, blackpart q) + fi +enddef ; + +% Add picture component q to picture @# and change part p to tp, +% where p is something from q that needs coordinate transformation. +% The type of p is pair or path. +% Pair o is the value of p that makes tp (0,0). This implements the trick +% whereby using 1 instead of 0 for the width or height or the setbounds path +% for a label picture suppresses shifting in x or y. + +%vardef graph_picture_conversion@#(expr q, o)(text tp) = +% save p ; +% if stroked q : +% path p ; p=pathpart q; +% addto @# doublepath tp graph_with_pen_and_color(q) dashed dashpart q ; +% elseif filled q : +% path p ; p=pathpart q; +% addto @# contour tp graph_with_pen_and_color(q) ; +% else : +% interim truecorners :=0 ; +% pair p ; p=llcorner q; +% if urcorner q<>p : p := p + graph_coordinate_multiplication(o-p,urcorner q-p) ; fi +% addto @# also q shifted ((tp)-llcorner q) ; +% fi +%enddef ; + +% This new version makes gdraw clip the result to the window defined with setrange + +vardef graph_picture_conversion@#(expr q, o)(text tp) = + save p ; + save do_clip, tp_clipped ; boolean do_clip ; do_clip := true ; + picture tp_clipped ; tp_clipped := nullpicture; + if stroked q : + path p ; p=pathpart q; + addto tp_clipped doublepath tp graph_with_pen_and_color(q) dashed dashpart q ; + %draw bbox tp_clipped withcolor red ; + elseif filled q : + path p ; p=pathpart q; + addto tp_clipped contour tp graph_with_pen_and_color(q) ; + %draw bbox tp_clipped withcolor green ; + else : + if (urcorner q<>llcorner q) : do_clip := false ; fi % Do not clip the axis labels; + interim truecorners := 0 ; + pair p ; p=llcorner q; + if urcorner q<>p : p := p + graph_coordinate_multiplication(o-p,urcorner q-p) ; fi + addto tp_clipped also q shifted ((tp)-llcorner q) ; + %draw bbox tp_clipped withcolor if do_clip : cyan else : blue fi ; + fi + if do_clip : + clip tp_clipped to origin--(xpart Z_.graph_dimensions,0)--Z_.graph_dimensions-- + (0,ypart Z_.graph_dimensions)--cycle ; + fi + addto @# also tp_clipped ; +enddef ; + +def graph_coordinate_multiplication(expr a,b) = (xpart a*xpart b, ypart a*ypart b) enddef ; + +vardef graph_clear_bounds@# = numeric @#.low, @#.high ; enddef; + +% Finalize anything drawn in the present coordinate system and set up a new +% system as requested + +vardef setcoords(expr tx, ty) = + interim warningcheck :=0 ; + if length graph_current_graph>0 : + save s, S, T ; + graph_remap(s, S, T) ; + for q within graph_current_graph : + graph_picture_conversion.graph_finished_graph(q,-s,p shifted s transformed S transformed T) ; + endfor + graph_current_graph := graph_current_bb := nullpicture ; + fi + graph_clear_bounds.X_ ; graph_clear_bounds.Y_; + X_.graph_coordinate_type := tx ; Y_.graph_coordinate_type := ty; +enddef ; + +% Set Z_.low and Z_.high to correspond to given range of user graph +% coordinates. The text argument should be a sequence of pairs and/or strings +% with 4 components in all. + +vardef setrange(text t) = + interim warningcheck :=0 ; + save r_ ; r_=0; + string r_[]s ; + for x_= + for p_=t : if pair p_ : xpart p_, ypart fi p_, endfor : + r_[incr r_] if string x_ : s fi = x_ ; + if r_>2 : + graph_set_bounds if r_=3 : X_ else : Y_ fi (r_[r_-2] if unknown r_[r_-2] : s fi, x_) ; + fi + exitif r_=4 ; + endfor +enddef ; + +% @# is X_ or Y_ ; l and h are numeric or string + +vardef graph_set_bounds@#(expr l, h) = + graph_clear_bounds@# ; + if @#graph_coordinate_type>0 : + @#low = if unknown l : + whatever + else : + if abs @#graph_coordinate_type=log : graph_mlog fi if string l : scantokens fi l + fi ; + @#high = if unknown h : + whatever + else : + if abs @#graph_coordinate_type=log : graph_mlog fi if string h : scantokens fi h + fi ; + else : + -@#high = if unknown l : + whatever + else : + if abs @#graph_coordinate_type=log : graph_mlog fi if string l : scantokens fi l + fi ; + -@#low = if unknown h : + whatever + else : + if abs @#graph_coordinate_type=log : graph_mlog fi if string h : scantokens fi h + fi ; + fi +enddef ; + +%%%%%%%%%%%%%%%%%%%%%%%%% Converting path coordinates %%%%%%%%%%%%%%%%%%%%%%%%% + +% Find the result of scanning path p and using macros tx and ty to adjust the +% x and y parts of each coordinate pair. Boolean parameter c tells whether to +% force the result to be polygonal. + +vardef graph_scan_path(expr p, c)(suffix tx, ty) = + if (str tx="") and (str ty="") : p + else : + save r_ ; path r_; + r_ := graph_pair_adjust(point 0 of p, tx, ty) + if path p : + for t=1 upto length p : + if c : -- + else : ..controls graph_pair_adjust(postcontrol(t-1) of p, tx, ty) + and graph_pair_adjust(precontrol t of p, tx, ty) .. + fi + graph_pair_adjust(point t of p, tx, ty) + endfor + if cycle p : &cycle fi + fi ; + if pair p : point 0 of fi r_ + fi +enddef ; + +vardef graph_pair_adjust(expr p)(suffix tx, ty) = (tx xpart p, ty ypart p) enddef ; + +% Convert path p from user graph coords to internal graph coords. + +vardef graph_convert_user_path_to_internal primary p = + interim warningcheck :=0 ; + if known p : + graph_scan_path(p, + (abs X_.graph_coordinate_type<>linear) or (abs Y_.graph_coordinate_type<>linear), + if abs X_.graph_coordinate_type=log : graph_mlog fi, + if abs Y_.graph_coordinate_type=log : graph_mlog fi) + transformed (identity + if X_.graph_coordinate_type<0 : xscaled -1 fi + if Y_.graph_coordinate_type<0 : yscaled -1 fi) + fi +enddef ; + +% Convert label location t_ from user graph coords to internal graph coords. +% The label location should be a pair, or two numbers/strings. If t_ is empty +% or a single item of non-pair type, just return t_. Unknown coordinates +% produce unknown components in the result. + +vardef graph_label_convert_user_to_internal(text t_) = + save n_ ; n_=0; + interim warningcheck :=0 ; + if 0 for x_=t_ : +1 if pair x_ : +1 fi endfor <= 1 : + t_ + else : + n_0 = n_1 = 0 ; + point 0 of graph_convert_user_path_to_internal ( + for x_= + for y_=t_ : if pair y_ : xpart y_, ypart fi y_, endfor + 0, 0 : + if known x_ : if string x_ : scantokens fi x_ + else : hide(n_[n_] :=whatever) 0 + fi + exitif incr n_=2 ; + ,endfor) + (n_0,n_1) + fi +enddef ; + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Reading data files %%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +% Read a line from file f, extract whitespace-separated tokens ignoring any +% initial "%", and return true if at least one token is found. The tokens +% are stored in @#1, @#2, .. with "" in the last @#[] entry. + +% String manipulation routines for MetaPost +% It is harmless to input this file more than once. + +vardef isdigit primary d = + ("0"<=d)and(d<="9") +enddef ; + +% Number of initial characters of string s where `c <character>' is true + +vardef graph_cspan(expr s)(text c) = + 0 + for i=1 upto length s: + exitunless c substring (i-1,i) of s; + + 1 + endfor +enddef ; + +% String s is composed of items separated by white space. Lop off the first +% item and the surrounding white space and return just the item. + +vardef graph_loptok suffix s = + save t, k; + k = graph_cspan(s," ">=); + if k > 0 : + s := substring(k,infinity) of s ; + fi + k := graph_cspan(s," "<); + string t; + t = substring (0,k) of s; + s := substring (k,infinity) of s; + s := substring (graph_cspan(s," ">=),infinity) of s; + t +enddef ; + +vardef graph_read_line@#(expr f) = + save n_, s_ ; string s_; + s_ = readfrom f ; + string @#[] ; + if s_<>EOF : + @#0 := s_ ; + @#1 := graph_loptok s_ ; + n_ = if @#1="%" : 0 else : 1 fi ; + forever : + @#[incr n_] := graph_loptok s_ ; + exitif @#[n_]="" ; + endfor + @#1<>"" + else : false + fi +enddef ; + +% Execute c for each line of data read from file f, and stop at the first +% line with no data. Commands c can use line number i and tokens $1, $2, ... +% and j is the number of fields. + +def gdata(expr f)(suffix $)(text c) = + %boolean flag ; % not used? + for i=1 upto largestmantissa : + exitunless graph_read_line$(f) ; + c + endfor + if graph_close_file : + closefrom f ; + fi +enddef ; + +% Read a path from file f. The path is terminated by blank line or EOF. + +vardef graph_readpath(expr f) = + interim warningcheck :=0 ; + save s ; + gdata(f, s, if i>1 :--fi + if s2="" : ( i, scantokens s1) + else : (scantokens s1, scantokens s2) fi + ) +enddef ; + +% Append coordinates t to polygonal path @#. The coordinates can be numerics, +% strings, or a single pair. + +vardef augment@#(text t) = + interim warningcheck := 0 ; + if not path begingroup @# endgroup : + graph_error(begingroup @# endgroup, "Cannot augment--not a path") ; + else : + def graph_comma= hide(def graph_comma=,enddef) enddef ; + if known @# : @# :=@#-- else : @#= fi + (for p=t : + graph_comma if string p : scantokens fi p + endfor) ; + fi +enddef ; + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Drawing and filling %%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +% Unknown pair components are set to 0 because glabel and gdotlabel understand +% unknown coordinates as `0 in absolute units'. + +vardef graph_unknown_pair_bbox(expr p) = + interim warningcheck:=0 ; + if known p : addto graph_current_bb doublepath p ; + else : + save x,y ; + z = llcorner graph_current_bb ; + if unknown xpart p : xpart p= else : x := fi 0 ; + if unknown ypart p : ypart p= else : y := fi 0 ; + addto graph_current_bb doublepath (p+z) ; + fi + graph_current_bb := image(fill llcorner graph_current_bb..urcorner graph_current_bb--cycle) ; +enddef ; + +% Initiate a gdraw or gfill command. This must be done before scanning the +% argument, because that could invoke the `if known graph_plot_picture' test in a following +% plot option . + +def graph_addto = + def graph_errorbar_text = enddef ; + color graph_foreground ; + path graph_last_path ; + graph_last_drawn := graph_plot_picture := nullpicture ; addto graph_last_drawn +enddef; + +% Handle the part of a gdraw command that uses path or data file p. + +def graph_draw expr p = + if string p : hide(graph_last_path := graph_readpath(p) ;) + graph_convert_user_path_to_internal graph_last_path + elseif path p or pair p : + hide(graph_last_path := p ;) + graph_convert_user_path_to_internal p + else : graph_error(p,"gdraw argument should be a data file or a path") + origin + fi + withpen currentpen graph_withlist _op_ +enddef ; + +% Handle the part of a gdraw command that uses path or data file p. + +def graph_fill expr p = + if string p : hide(graph_last_path := graph_readpath(p) --cycle ;) + graph_convert_user_path_to_internal graph_last_path + elseif cycle p : hide(graph_last_path := p ;) + graph_convert_user_path_to_internal p + else : graph_error(p,"gfill argument should be a data file or a cyclic path") + origin..cycle + fi graph_withlist _op_ +enddef ; + +def gdraw = graph_addto doublepath graph_draw enddef ; +def gfill = graph_addto contour graph_fill enddef ; + +% This is used in graph_draw and graph_fill to allow postprocessing graph_last_drawn + +def graph_withlist text t_ = t_ ; graph_post_draw; enddef; + +def witherrorbars(text t) text options = + hide( + def graph_errorbar_text = t enddef ; + save pic ; picture pic ; pic := image(draw origin _op_ options ;) ; + if color colorpart pic : graph_foreground := colorpart pic ; fi + ) + options +enddef ; + +% new feature: graph_errorbars + +picture graph_errorbar_picture ; graph_errorbar_picture := image(draw (left--right) scaled .5 ;) ; +%picture graph_xbar_picture ; graph_xbar_picture := image(draw (down--up) scaled .5 ;) ; +%picture graph_ybar_picture ; graph_ybar_picture := image(draw (left--right) scaled .5 ;) ; + +vardef graph_errorbars(text t) = + if known graph_last_path : + save n, p, q ; path p ; pair q ; + save pic ; picture pic[] ; pic0 := nullpicture ; + pic1 := if known graph_xbar_picture : graph_xbar_picture + elseif known graph_errorbar_picture : graph_errorbar_picture rotated 90 + else : nullpicture fi ; + pic2 := if known graph_ybar_picture : graph_ybar_picture + elseif known graph_errorbar_picture : graph_errorbar_picture + else : nullpicture fi ; + if length pic1>0 : + pic1 := pic1 scaled graph_shapesize ; + setbounds pic1 to origin..cycle ; + fi + if length pic2>0 : + pic2 := pic2 scaled graph_shapesize ; + setbounds pic2 to origin..cycle ; + fi + for i=0 upto length graph_last_path : + clearxy ; z = point i of graph_last_path ; + n := 1 ; + for $=t : + if known $ : + q := if path $ : if length $>i : point i of $ else : origin fi + elseif pair $ : $ elseif numeric $ : ($,$) else : origin fi ; + if q<>origin : + p := graph_convert_user_path_to_internal (( + if n=1 : + (-xpart q,0)--(ypart q,0) + else : + (0,-xpart q)--(0,ypart q) + fi ) shifted z) ; + addto pic0 doublepath p ; + if length pic[n]>0 : + if ypart q<>0 : + addto pic0 also pic[n] shifted point 1 of p ; + fi + if xpart q<>0 : + addto pic0 also pic[n] rotated 180 shifted point 0 of p ; + fi + fi + fi + fi + exitif incr n>3 ; + endfor + endfor + if length pic0>0 : + save bg, fg ; color bg, fg ; + bg := if known graph_background : graph_background else : background fi ; + fg := if known graph_foreground : graph_foreground else : black fi ; + addto graph_current_graph also pic0 withpen currentpen scaled 2 _op_ withcolor bg ; + addto graph_current_graph also pic0 withpen currentpen scaled .5 _op_ withcolor fg ; + fi + fi +enddef ; + +% Set graph_plot_picture so the postprocessing step will plot picture p at each path knot. +% Also select nullpen to suppress stroking. + +def plot expr p = + if known graph_plot_picture : + withpen nullpen + hide (graph_plot_picture := image( + if bounded p : for q within p : graph_addto_currentpicture q endfor % Save memory + else : graph_addto_currentpicture p + fi graph_setbounds origin..cycle)) + fi +enddef ; + +% This hides a semicolon that could prematurely end graph_withlist's text argument + +def graph_addto_currentpicture primary p = addto currentpicture also p ; enddef; +def graph_setbounds = setbounds currentpicture to enddef ; + +def gdrawarrow = graph_number_of_arrowheads := 1 ; gdraw enddef; +def gdrawdblarrow = graph_number_of_arrowheads := 2 ; gdraw enddef; + +% Post-process the filled or stroked picture graph_last_drawn as follows : (1) update +% the bounding box information ; (2) transfer it to graph_current_graph unless the pen has +% been set to nullpen to disable stroking ; (3) plot graph_plot_picture at each knot. + +vardef graph_post_draw = + save p ; path p ; p = pathpart graph_last_drawn ; + graph_unknown_pair_bbox(p) ; + if filled graph_last_drawn or not graph_is_null(penpart graph_last_drawn) : + addto graph_current_graph also graph_last_drawn ; + fi + graph_errorbars(graph_errorbar_text) ; + if length graph_plot_picture>0 : + for i=0 upto length p if cycle p : -1 fi : + addto graph_current_graph also graph_plot_picture shifted point i of p ; + endfor + picture graph_plot_picture ; + fi + if graph_number_of_arrowheads>0 : + graph_draw_arrowhead(p, graph_with_pen_and_color(graph_last_drawn)) ; + if graph_number_of_arrowheads>1 : + graph_draw_arrowhead(reverse p, graph_with_pen_and_color(graph_last_drawn)) ; + fi + graph_number_of_arrowheads := 0 ; + fi +enddef ; + +vardef graph_is_null(expr p) = (urcorner p=origin) and (llcorner p=origin) enddef ; + +vardef graph_draw_arrowhead(expr p)(text w) = % Draw arrowhead for path p, with list w + %save r ; r := angle(precontrol infinity of p shifted -point infinity of p) ; + addto graph_current_graph also + image(fill arrowhead (graph_arrowhead_extent(precontrol infinity of p,point infinity of p)) w ; + draw arrowhead (graph_arrowhead_extent(precontrol infinity of p,point infinity of p)) w + undashed ; +%if (r mod 90 <> 0) : % orientation can be wrong due to remapping +% draw textext("\tfxx " & decimal r) shifted point infinity of p withcolor blue ; +%fi + graph_setbounds point infinity of p..cycle ; + ) ; % rotatedabout(point infinity of p,-r) ; +enddef ; + +vardef graph_arrowhead_extent(expr p, q) = + if p<>q : (q - 100pt*unitvector(q-p)) -- fi + q +enddef ; + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Drawing labels %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +% Argument c is a drawing command that needs an additional argument p that gives +% a location in internal graph coords. Draw in graph_current_graph enclosed in a setbounds +% path. Unknown components of p cause the setbounds path to have width or height 1 instead of 0. +% Then graph_unknown_pair_bbox sets these components to 0 and graph_picture_conversion +% suppresses subsequent repositioning. + +def graph_draw_label(expr p)(suffix $)(text c) = + save sdim_ ; pair sdim_; + sdim_ := (if unknown xpart p : 1+ fi 0, if unknown ypart p : 1+ fi 0) ; + graph_unknown_pair_bbox(p) ; + addto graph_current_graph also + image(c(p) ; graph_setbounds p--p+sdim_--cycle) _op_ +enddef ; + +% Stash the result drawing command c in the graph_label table using with list w and +% an index based on angle mfun_laboff$. + +vardef graph_stash_label(suffix $)(text c) text w = + graph_label[1.5+angle mfun_laboff$ /90] = image(c(origin) w) ; +enddef ; + +def graph_label_location primary p = + if pair p : graph_draw_label(p) + elseif numeric p : graph_draw_label(point p of pathpart graph_last_drawn) + else : graph_stash_label + fi +enddef ; + +% Place label p at user graph coords t using with list w. (t is a time, a pair +% or 2 numerics or strings). + +vardef glabel@#(expr p)(text t) text w = + graph_label_location graph_label_convert_user_to_internal(t) (@#,label@#(p)) w ; enddef; + +% Place label p at user graph coords t using with list w and draw a dot there. +% (t is a time, a pair, or 2 numerics or strings). + +vardef gdotlabel@#(expr p)(text t) text w = + graph_label_location graph_label_convert_user_to_internal(t) (@#,dotlabel@#(p)) w ; enddef; + +def OUT = enddef ; % location text for outside labels + +%%%%%%%%%%%%%%%%%%%%%%%%%% Grid lines, ticks, etc. %%%%%%%%%%%%%%%%%%%%%%%%%% + +% Grid lines and tick marks are transformed versions of the templates below. +% In the template paths, (0,0) is on the edge of the frame and inward is to +% the right. + +path graph_template.tick, graph_template.itick, graph_template.otick, graph_template.grid ; +graph_template.tick = (-3.5bp,0)--(3.5bp,0) ; +graph_template.itick = origin--(7bp,0) ; +graph_template.otick = (-7bp,0)--origin ; +graph_template.grid = origin--(1,0) ; + +vardef tick@#(expr f,u) text w = graph_tick_label(@#,@,false,f,u,w) ; enddef; + +vardef itick@#(expr f,u) text w = graph_tick_label(@#,@,false,f,u,w) ; enddef; + +vardef otick@#(expr f,u) text w = graph_tick_label(@#,@,false,f,u,w) ; enddef; + +vardef grid@#(expr f,u) text w = graph_tick_label(@#,@,true,f,u,w) ; enddef; + + +% Produce a tick or grid mark for label suffix $, graph_template suffix $$, +% coordinate value u, and with list w. Boolean c tells whether graph_template$$ +% needs scaling by X_.graph_dimensions or Y_.graph_dimensions, +% and f gives a format string or a label picture. + +def graph_tick_label(suffix $,$$)(expr c, f, u)(text w) = + graph_draw_label(graph_label_convert_user_to_internal(graph_generate_label_position($,u)),, + draw graph_gridline_picture$($$,c,f,u,w) shifted) +enddef ; + +% Generate label positioning arguments appropriate for label suffix $ and +% coordinate u. + +def graph_generate_label_position(suffix $)(expr u) = + if pair u : u elseif xpart mfun_laboff.$=0 : u,whatever else : whatever,u fi +enddef ; + +% Generate a picture of a grid line labeled with coordinate value u, picture +% or format string f, and with list w. Suffix @# is bot, top, lft, or rt, +% suffix $ identifies entries in the graph_template table, and boolean c tells +% whether to scale graph_template$. + +vardef graph_gridline_picture@#(suffix $)(expr c, f, u)(text w) = + if unknown u : graph_error(u,"Label coordinate should be known") ; nullpicture + else : + save p ; path p; + interim warningcheck :=0 ; + graph_autogrid_needed :=false ; + p = graph_template$ zscaled -mfun_laboff@# + if c : graph_xyscale fi + shifted (((.5 + mfun_laboff@# dotprod (.5,.5)) * mfun_laboff@#) graph_xyscale) ; + image(draw p w ; + label@#(if string f : format(f,u) else : f fi, point 0 of p)) + fi +enddef ; + +def graph_xyscale = xscaled X_.graph_dimensions yscaled Y_.graph_dimensions enddef ; + +% Draw the frame or the part corresponding to label suffix @# using with list w. + +vardef frame@# text w = + graph_frame_needed :=false ; + picture p_ ; + p_ = image(draw + if str@#<>"" : subpath round(angle mfun_laboff@#*graph_frame_pair_a+graph_frame_pair_b) of fi + unitsquare graph_xyscale w) ; + graph_draw_label((whatever,whatever),,draw p_ shifted) ; +enddef ; + +pair graph_frame_pair_a ; graph_frame_pair_a=(1,1)/90; % unitsquare subpath is linear in label angle +pair graph_frame_pair_b ; graph_frame_pair_b=(.75,2.25); + +%%%%%%%%%%%%%%%%%%%%%%%%%% Automatic grid selection %%%%%%%%%%%%%%%%%%%%%%%%%% + +string graph_log_marks[] ; % marking options per decade for logarithmic scales +string graph_lin_marks ; % mark spacing options per decade for linear scales +string graph_exp_marks ; % exponent spacing options for logarithmic scales +newinternal graph_minimum_number_of_marks, graph_log_minimum ; +graph_minimum_number_of_marks := 4 ; % minimum number marks generated by auto.x or auto.y +graph_log_minimum := mlog 3 ; % revert to uniform marks when largest/smallest < this + +def Gfor(text t) = for i=t endfor enddef ; % to shorten the mark templates below + +graph_log_marks[1]="1,2,5" ; +graph_log_marks[2]="1,1.5,2,3,4,5,7" ; +graph_log_marks[3]="1Gfor(6upto10 :,i/5)Gfor(5upto10 :,i/2)Gfor(6upto9 :,i)" ; +graph_log_marks[4]="1Gfor(11upto20 :,i/10)Gfor(11upto25 :,i/5)Gfor(11upto19 :,i/2)" ; +graph_log_marks[5]="1Gfor(21upto40 :,i/20)Gfor(21upto50 :,i/10)Gfor(26upto49 :,i/5)" ; +graph_lin_marks="10,5,2" ; % start with 10 and go down; a final `,1' is appended +graph_exp_marks="20,10,5,2,1" ; + +Ten_to0 = 1 ; +Ten_to1 = 10 ; +Ten_to2 = 100 ; +Ten_to3 = 1000 ; +Ten_to4 = 10000 ; + +% Determine the X_ or Y_ bounds on the range to be covered by automatic grid +% marks. Suffix @# is X_ or Y_. The result is log or linear to specify the +% type of grid spacing to use. Bounds are returned in variables local to +% begingraph..endgraph : pairs graph_modified_lower and graph_modified_higher +% are upper and lower bounds in +% `modified exponential form'. In modified exponential form, (x,y) means +% (x/1000)*10^y, where 1000<=abs x<10000. + +vardef graph_bounds@# = + interim warningcheck :=0 ; + save l, h ; + graph_set_default_bounds ; + if @#graph_coordinate_type>0 : (l,h) else : -(h,l) fi = (@#low, @#high) ; + if abs @#graph_coordinate_type=log : + graph_modified_lower := graph_Meform(l)+graph_modified_bias ; + graph_modified_higher := graph_Meform(h)+graph_modified_bias ; + if h-l >= graph_log_minimum : log else : linear fi + else : + graph_modified_lower := graph_Feform(l)+graph_modified_bias ; + graph_modified_higher := graph_Feform(h)+graph_modified_bias ; + linear + fi +enddef ; + +pair graph_modified_bias ; graph_modified_bias=(0,3); +pair graph_modified_lower, graph_modified_higher ; + +% Scan graph_log_marks[k] and evaluate tokens t for each m where l<=m<=h. + +def graph_scan_marks(expr k, l, h)(text t) = + for m=scantokens graph_log_marks[k] : + exitif m>h ; + if m>=l : t fi + endfor +enddef ; + +% Scan graph_log_marks[k] and evaluate tokens t for each m and e where m*10^e belongs +% between l and h (inclusive), where both l and h are in modified exponent form. + +def graph_scan_mark(expr k, l, h)(text t) = + for e=ypart l upto ypart h : + graph_scan_marks(k, if e>ypart l : 1 else : xpart l/1000 fi, + if e<ypart h : 10 else : xpart h/1000 fi, t) + endfor +enddef ; + +% Select a k for which graph_scan_mark(k,...) gives enough marks. + +vardef graph_select_mark = + save k ; + k = 0 ; + forever : + exitif unknown graph_log_marks[k+1] ; + exitif 0 graph_scan_mark(incr k, graph_modified_lower, graph_modified_higher, +1) + >= graph_minimum_number_of_marks ; + endfor + k +enddef ; + +% Try to select an exponent spacing from graph_exp_marks. If successful, set @# and +% return true + +vardef graph_select_exponent_mark@# = + numeric @# ; + for e=scantokens graph_exp_marks : + @# = e ; + exitif floor(ypart graph_modified_higher/e) - + floor(graph_modified_exponent_ypart(graph_modified_lower)/e) + >= graph_minimum_number_of_marks ; + numeric @# ; + endfor + known @# +enddef ; + +vardef graph_modified_exponent_ypart(expr p) = ypart p if xpart p=1000 : -1 fi enddef ; + +% Compute the mark spacing d between xpart graph_modified_lower and xpart graph_modified_higher. + +vardef graph_tick_mark_spacing = + interim warningcheck :=0 ; + save m, n, d ; + m = graph_minimum_number_of_marks ; + n = 1 for i=1 upto + (mlog(xpart graph_modified_higher-xpart graph_modified_lower) - mlog m)/mlogten : + *10 endfor ; + if n<=1000 : + for x=scantokens graph_lin_marks : + d = n*x ; + exitif 0 graph_generate_numbers(d,+1)>=m ; + numeric d ; + endfor + fi + if known d : d else : n fi +enddef ; + +def graph_generate_numbers(expr d)(text t) = + for m = d*ceiling(xpart graph_modified_lower/d) step d until xpart graph_modified_higher : + t + endfor +enddef ; + +% Evaluate tokens t for exponents e in multiples of d in the range determined +% by graph_modified_lower and graph_modified_higher. + +def graph_generate_exponents(expr d)(text t) = + for e = d*floor(graph_modified_exponent_ypart(graph_modified_lower)/d+1) + step d until d*floor(ypart graph_modified_higher/d) : t + endfor +enddef ; + +% Adjust graph_modified_lower and graph_modified_higher so their exponent parts match +% and they are in true exponent form ((x,y) means x*10^y). Return the new exponent. + +vardef graph_match_exponents = + interim warningcheck := 0 ; + save e ; + e+3 = if graph_modified_lower=graph_modified_bias : ypart graph_modified_higher + elseif graph_modified_higher=graph_modified_bias : ypart graph_modified_lower + else : max(ypart graph_modified_lower, ypart graph_modified_higher) fi ; + forsuffixes $=graph_modified_lower, graph_modified_higher : + $ := (xpart $ for i=ypart $ upto e+2 : /(10) endfor, e) ; + endfor + e +enddef ; + +% Assume e is an integer and either m=0 or 1<=abs(m)<10000. Find m*(10^e) +% and represent the result as a string if its absolute value would be at least +% 4096 or less than .1. It is OK to return 0 as a string or a numeric. + +vardef graph_factor_and_exponent_to_string(expr m, e) = + if (e>3)or(e<-4) : + decimal m & "e" & decimal e + elseif e>=0 : + if abs m<infinity/Ten_to[e] : + m*Ten_to[e] + else : decimal m & "e" & decimal e + fi + else : + save x ; x=m/Ten_to[-e]; + if abs x>=.1 : x else : decimal m & "e" & decimal e fi + fi +enddef ; + +def auto suffix $ = + hide(def graph_comma= hide(def graph_comma=,enddef) enddef) + if graph_bounds.graph_suffix($)=log : + if graph_select_exponent_mark.graph_exponent : + graph_generate_exponents(graph_exponent, + graph_comma graph_factor_and_exponent_to_string(1,e)) + else : + graph_scan_mark(graph_select_mark, graph_modified_lower, graph_modified_higher, + graph_comma graph_factor_and_exponent_to_string(m,e)) + fi + else : + hide(graph_exponent :=graph_match_exponents) + graph_generate_numbers(graph_tick_mark_spacing, + graph_comma graph_factor_and_exponent_to_string(m,graph_exponent)) + fi +enddef ; + +string Autoform ; Autoform = "%g"; + +%vardef autogrid(suffix tx, ty) text w = +% graph_autogrid_needed :=false ; +% if str tx<>"" : for x=auto.x : tx(Autoform,x) w ; endfor fi +% if str ty<>"" : for y=auto.y : ty(Autoform,y) w ; endfor fi +%enddef ; + +% We redefine autogrid, adding the possibility of differing X and Y +% formats. + +% string Autoform_X ; Autoform_X := "@.0e" ; +% string Autoform_Y ; Autoform_Y := "@.0e" ; + +vardef autogrid(suffix tx, ty) text w = + graph_autogrid_needed := false ; + if str tx <> "" : + for x=auto.x : + tx ( + if string Autoform_X : + if Autoform_X <> "" : + Autoform_X + else : + Autoform + fi + else : + Autoform + fi, + x + ) w ; + endfor + fi + if str ty <> "" : + for y=auto.y : + ty ( + if string Autoform_Y : + if Autoform_Y <> "" : + Autoform_Y + else : + Autoform + fi + else : + Autoform + fi, + y + ) w ; + endfor + fi +enddef ; + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% endgraph %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +def endgraph = + if graph_autogrid_needed : autogrid(otick.bot, otick.lft) ; fi + if graph_frame_needed : frame ; fi + setcoords(linear,linear) ; + interim truecorners :=1 ; + for b=bbox graph_finished_graph : + setbounds graph_finished_graph to b ; + for i=0 step .5 until 3.5 : + if known graph_label[i] : + addto graph_finished_graph also graph_label[i] shifted point i of b ; + fi + endfor + endfor + graph_finished_graph + endgroup +enddef ; + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +% We format in luatex (using \mathematics{}) ... +% we could pass via variables and save escaping as that is inefficient + +if unknown context_mlib : + + vardef escaped_format(expr s) = + "" for n=0 upto length(s) : & + if ASCII substring (n,n+1) of s = 37 : + "@" + else : + substring (n,n+1) of s + fi + endfor + enddef ; + + vardef strfmt(expr f, x) = % maybe use mfun_ namespace + "\MPgraphformat{" & escaped_format(f) & "}{" & mfun_tagged_string(x) & "}" + enddef ; + + vardef varfmt(expr f, x) = % maybe use mfun_ namespace + "\MPformatted{" & escaped_format(f) & "}{" & mfun_tagged_string(x) & "}" + enddef ; + + vardef format (expr f, x) = textext(strfmt(f,x)) enddef ; + vardef formatted(expr f, x) = textext(varfmt(f,x)) enddef ; + +fi ; + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +% A couple of extensions : + +% Define a function plotsymbol() returning a picture : 10 different shapes, +% unfilled outline, interior filled with different shades of the background. +% This allows overlapping points on a plot to be more distinguishable. + +vardef graph_shapesize = (.33BodyFontSize) enddef ; + +path graph_shape[] ; % (internal) symbol path + +graph_shape[0] := (0,0) ; % point +graph_shape[1] := fullcircle ; % circle +graph_shape[2] := (up -- down) scaled .5 ; % vertical bar + +for i = 3 upto 9 : % polygons + graph_shape[i] := + for j = 0 upto i-1 : + (up scaled .5) rotated (360j/i) -- + endfor cycle ; +endfor + +graph_shape[12] := graph_shape[2] rotated +90 ; % horizontal line +graph_shape[22] := graph_shape[2] rotated +45 ; % backslash +graph_shape[32] := graph_shape[2] rotated -45 ; % slash +graph_shape[13] := graph_shape[3] rotated 180 ; % down triangle +graph_shape[23] := graph_shape[3] rotated -90 ; % right triangle +graph_shape[33] := graph_shape[3] rotated +90 ; % left triangle +graph_shape[14] := graph_shape[4] rotated +45 ; % square +graph_shape[15] := graph_shape[5] rotated 180 ; % down pentagon +graph_shape[16] := graph_shape[6] rotated +90 ; % turned hexagon +graph_shape[17] := graph_shape[7] rotated 180 ; +graph_shape[18] := graph_shape[8] rotated +22.5 ; + +numeric l ; + +for j = 5 upto 9 : + l := length(graph_shape[j]) ; + pair p[] ; + for i = 0 upto l : + p[i] = whatever [point i of graph_shape[j], + point (i+2 mod l) of graph_shape[j]] ; + p[i] = whatever [point (i+1 mod l) of graph_shape[j], + point (i+l-1 mod l) of graph_shape[j]] ; + endfor + graph_shape[20+j] := for i = 0 upto l : point i of graph_shape[j]--p[i]--endfor cycle ; +endfor + +path s ; s := graph_shape[4] ; +path q ; q := s scaled .25 ; +numeric l ; l := length(s) ; + +pair p[] ; + +graph_shape[24] := for i = 0 upto l-1 : + hide( + p[i] = whatever [point i of s, point (i+1 mod l) of s] ; + p[i] = whatever [point i of q, point (i-1+l mod l) of q] ; + p[i+l] = whatever [point i of s, point (i+1 mod l) of s] ; + p[i+l] = whatever [point i+1 of q, point (i+2 mod l) of q] ; + ) + point i of q -- p[i] -- p[i+l] -- +endfor cycle ; + +graph_shape[34] := graph_shape[24] rotated 45 ; + +% usage : gdraw p plot plotsymbol( 1,1) ; % a filled circle +% usage : gdraw p plot plotsymbol(14,0) ; % a square +% usage : gdraw p plot plotsymbol( 4,.5) ; % a 50% filled diamond + +def stars(expr f) = plotsymbol(25,f) enddef ; % a 5-point star +def points(expr f) = plotsymbol( 0,f) enddef ; +def circles(expr f) = plotsymbol( 1,f) enddef ; +def crosses(expr f) = plotsymbol(34,f) enddef ; +def squares(expr f) = plotsymbol(14,f) enddef ; +def diamonds(expr f) = plotsymbol( 4,f) enddef ; % a turned square +def uptriangles(expr f) = plotsymbol( 3,f) enddef ; +def downtriangles(expr f) = plotsymbol(13,f) enddef ; +def lefttriangles(expr f) = plotsymbol(33,f) enddef ; +def righttriangles(expr f) = plotsymbol(23,f) enddef ; + +% f (fill) is color, numeric or boolean, otherwise background. +def plotsymbol(expr n, f) text t = + if known graph_shape[n] : + image( + save bg, fg ; color bg, fg ; + bg := if known graph_background : graph_background else : background fi ; + save pic ; picture pic ; pic := image(draw origin _op_ t ;) ; + if color colorpart pic : graph_foreground := colorpart pic ; fi + fg := if known graph_foreground : graph_foreground else : black fi ; + save p ; path p ; p = graph_shape[n] scaled graph_shapesize ; + draw p withcolor bg withpen currentpen scaled 2 ; % halo + currentpen := currentpen scaled .5 ; + if cycle p : + fill p withcolor + if known f : + if color f : + f + elseif numeric f : + f[bg,fg] + elseif boolean f and f : + fg + else + bg + fi + else : + bg + fi ; + fi + draw p _op_ t ; + ) + else : + nullpicture + fi + t +enddef ; + +% standard resistance color code: rainbow sequence (from /usr/share/X11/rgb.txt) +color resistance_color[] ; string resistance_name[] ; +resistance_color0 = (0,0,0) ; resistance_name0 = "black" ; +resistance_color1 = (165/255,42/255,42/255) ; resistance_name1 = "brown" ; +resistance_color2 = (1,0,0) ; resistance_name2 = "red" ; +resistance_color3 = (1,165/255,0) ; resistance_name3 = "orange" ; +resistance_color4 = (1,1,0) ; resistance_name4 = "yellow" ; +resistance_color5 = (0,1,0) ; resistance_name5 = "green" ; +resistance_color6 = (0,0,1) ; resistance_name6 = "blue" ; +resistance_color7 = (148/255,0,211/255) ; resistance_name7 = "darkviolet" ; +resistance_color8 = (190/255,190/255,190/255) ; resistance_name8 = "gray" ; +resistance_color9 = (1,1,1) ; resistance_name9 = "white" ; + +%def rainbow(expr f) = +% ((abs(5f) mod 5) + 2 - floor((abs(5f) mod 5) + 2)) +% [resistance_color[ floor((abs(5f) mod 5) + 2)], +% resistance_color[ceiling((abs(5f) mod 5) + 2)]] +%enddef ; +def rainbow(expr f) = + hide(numeric n_ ; n_ = (abs(5f) mod 5) + 2 ;) + (n_-floor(n_))[resistance_color[floor n_],resistance_color[ceiling n_]] +enddef ; + +% The following extensions are not specific to graph and could be moved to metafun... + +% sort a path. Efficient en memory use, not so efficient in sorting long paths... + +vardef sortpath (suffix $) (text t) = % t can be "xpart", "ypart", "length", "angle", ... + if path $ : + if length $ > 0 : + save n, k ; n := length $ ; + for i=0 upto n : + k := i ; + for j=i+1 upto n : + if t (point j of $) < t (point k of $) : + k := j ; + fi + endfor + if k>i : + $ := if i>0 : subpath (0,i-1) of $ -- fi + point k of $ -- + subpath (i,k-1) of $ + if k<n : -- subpath (k+1,n) of $ fi + ; + fi + endfor + fi + fi +enddef ; + +% convert a polygon path to a smooth path (useful, e.g. as a guide to the eye) + +def smoothpath (suffix $) = + if path $ : + (for i=0 upto length $ : + if i>0 : .. fi + (point i of $) + endfor ) + fi +enddef ; + +% return a path of a function func(x) with abscissa running from f to t over n intervals + +def makefunctionpath (expr f, t, n) (text func) = + (for x=f step ((t-f)/(abs n)) until t : + if x<>f : -- fi + (x, func) + endfor ) +enddef ; + +% shift a path, point by point +% +% example : +% +% p1 := addtopath(p0,(.1normaldeviate,.1normaldeviate)) ; + +vardef addtopath (suffix p) (text t) = + if path p : + (for i=0 upto length p : + if i>0 : -- fi + hide(clearxy ; z = point i of p ;) z shifted t + endfor) + fi +enddef ; + +% return a new path of a function func(z) using the same abscissa as an existing path + +vardef functionpath (suffix p) (text func) = + (for i=0 upto length p : + if i>0 : .. fi + (hide(x := xpart(point i of p))x,func) %(hide(clearxy ; z = point i of p)x,func) + endfor ) +enddef ; + +% least-squares "fit" to a polynomial +% +% example : +% +% path p[] ; +% numeric a[] ; a0 := 1 ; a1 := .1 ; a2 := .01 ; a3 := .001 ; a4 := 0.0001 ; +% p0 := makefunctionpath(0,5,10,polynomial_function(a,4,x)) ; +% p1 := addtopath(p0,(0,.001normaldeviate)) ; +% gdraw p0 ; +% gdraw p1 plot plotsymbol(1,.5) ; +% +% numeric b[] ; +% polynomial_fit(p1, b, 4, 1) ; +% gdraw functionpath(p1,polynomial_function(b,4,x)) ; +% +% numeric c[] ; +% linear_fit(p1, c, 1) ; +% gdraw functionpath(p1,linear_function(c,x)) dashed evenly ; + +% a polynomial function : +% +% y = a0 + a1 * x + a2 * x^2 + ... + a[n] * x^n + +vardef polynomial_function (suffix $) (expr n, x) = + (for j=0 upto n : + $[j]*(x**j) endfor) % no ; +enddef ; + +% find the determinant of a (n+1)*(n+1) matrix ; indices run from 0 to n + +vardef det (suffix $) (expr n) = + hide( + numeric determinant ; determinant := 1 ; + save jj ; numeric jj ; + for k=0 upto n : + if $[k][k]=0 : + jj := -1 ; + for j=0 upto n : + if $[k][j]<>0 : + jj := j ; + exitif true ; + fi + endfor + if jj<0 : + determinant := 0 ; + exitif true ; + fi + for j=k upto n : % interchange the columns + temp := $[j][jj] ; + $[j][jj] := $[j][k] ; + $[j][k] := temp ; + endfor + determinant = -determinant ; + fi + exitif determinant=0 ; + determinant := determinant * $[k][k] ; + if k<n : % subtract row k from lower rows to get a diagonal matrix + for j=k+1 upto n : + for i=k+1 upto n : + $[j][i] := $[j][i]-$[j][k]*$[k][i]/$[k][k] ; + endfor + endfor + fi + endfor ; + ) + determinant % no ; +enddef ; + +numeric fit_chi_squared ; + +% least-squares fit of a polynomial $ of order n to a path p (unweighted) +% +% reference : P. R. Bevington, "Data Reduction and Error Analysis for the Physical +% Sciences", McGraw-Hill, New York 1969. + +vardef polynomial_fit (suffix p, $) (expr n) (text t) = + if not path p : + graph_error(p, "Cannot fit--not a path") ; + elseif length p < n : + graph_error(p, "Cannot fit--not enough points") ; + else : + fit_chi_squared := 0 ; + % calculate sums of the data + save sumx, sumy ; numeric sumx[], sumy[] ; + save w ; numeric w ; + for i=0 upto 2n : + sumx[i] := 0 ; + endfor + for i=0 upto n : + sumy[i] := 0 ; + endfor + for i=0 upto length p : + clearxy ; z = point i of p ; + w := 1 ; % weight + if known t : + if numeric t : + w := 1 if t<>0 : /(abs t) fi ; + elseif pair t : + if t<>origin : + w := 1/(abs t) ; + fi + elseif path t : + if length t>= i: + if point i of t<>origin : + w := 1/(abs point i of t) ; + fi + else : + w := 0 ; + fi ; + fi + fi + x1 := w ; + for j=0 upto 2n : + sumx[j] := sumx[j] + x1 ; + x1 := x1 * x ; + endfor + y1 := y * w ; + for j=0 upto n : + sumy[j] := sumy[j] + y1 ; + y1 := y1 * x ; + endfor + fit_chi_squared := fit_chi_squared + y*y*w ; + endfor + % construct matrices and calculate the polynomial coefficients + save m ; numeric m[][] ; + for j=0 upto n : + for k=0 upto n : + m[j][k] := sumx[j+k] ; + endfor + endfor + save delta ; numeric delta ; + delta := det(m,n) ; % this destroys the matrix m[][], which is OK + if delta = 0 : + fit_chi_squared := 0 ; + for j=0 upto n : + $[j] := 0 ; + endfor + else : + for i=0 upto n : + for j=0 upto n : + for k=0 upto n : + m[j][k] := sumx[j+k] ; + endfor + m[j][i] := sumy[j] ; + endfor + $[i] := det(m,n) / delta ; % matrix m[][] gets destroyed... + endfor + for j=0 upto n : + fit_chi_squared := fit_chi_squared - 2sumy[j]*$[j] ; + for k=0 upto n : + fit_chi_squared := fit_chi_squared + $[j]*$[k]*sumx[j+k] ; + endfor + endfor + % normalize by the number of degrees of freedom + fit_chi_squared := fit_chi_squared / (length(p) - n) ; % length(p)+1-(n+1) + fi + fi +enddef ; + +% y = a0 + a1 * x +% +% of course a line is just a polynomial of order 1 + +vardef linear_function (suffix $) (expr x) = polynomial_function($,1,x) enddef ; +vardef linear_fit (suffix p, $) (text t) = polynomial_fit(p, $, 1, t) ; enddef ; + +% and a constant is polynomial of order 0 + +vardef constant_function (suffix $) (expr x) = polynomial_function($,0,x) enddef ; +vardef constant_fit (suffix p, $) (text t) = polynomial_fit(p, $, 0, t) ; enddef ; + +% y = a1 * exp(a0*x) +% +% exp and ln defined in metafun + +vardef exponential_function (suffix $) (expr x) = $1*exp($0*x) enddef ; + +% since we take a log, this only works for positive ordinates + +vardef exponential_fit (suffix p, $) (text t) = + save a ; numeric a[] ; + save q ; path q[] ; % fit to the log of the ordinate + for i=0 upto length p : + clearxy ; z = point i of p ; + if y>0 : + augment.q0(x,ln(y)) ; + augment.q1( + if known t : + if numeric t : (0,ln(t)) + elseif pair t : (xpart t,ln(ypart t)) + elseif path t : + if length t>=i : + hide(z1 = point i of t;) + (x1,ln(y1)) + else : + origin + fi + fi + else : + (0,1) + fi ) ; + fi + endfor + linear_fit(q0,a,q1) ; + save e ; e := exp(sqrt(fit_chi_squared)) ; + fit_chi_squared := e * e ; + $0 := a1 ; + $1 := exp(a0) ; +enddef ; + +% y = a1 * x**a0 + +vardef power_law_function (suffix $) (expr x) = $1*(x**$0) enddef ; + +% since we take logs, this only works for positive abscissae and ordinates + +vardef power_law_fit (suffix p, $) (text t) = + save a ; numeric a[] ; + save q ; path q[] ; % fit to the logs of the abscissae and ordinates + for i=0 upto length p : + clearxy ; z = point i of p ; + if (x>0) and (y>0) : + augment.q0(ln(x),ln(y)) ; + augment.q1( + if known t : + if numeric t : (0,ln(t)) + elseif pair t : (ln(xpart t),ln(ypart t)) + elseif path t : + if length t>=i : + hide(z1 = point i of t) + (ln(x1),ln(y1)) + else : + origin + fi + fi + else : + (0,1) + fi ) ; + fi + endfor + linear_fit(q0,a,q1) ; + save e ; e := exp(sqrt(fit_chi_squared)) ; + fit_chi_squared := e * e ; + $0 := a1 ; + $1 := exp(a0) ; +enddef ; + +% gaussian : y = a2 * exp(-ln(2)*((x-a0)/a1)^2) +% +% a1 is the hwhm ; sigma := a1/sqrt(2ln(2)) or a1/1.17741 + +newinternal lntwo ; lntwo := ln(2) ; % brrr, why not inline it + +vardef gaussian_function (suffix $) (expr x) = + if $1 = 0 : + if x = $0 : $2 else : 0 fi + else : + $2 * exp(-lntwo*(((x-$0)/$1)**2)) + fi + if known $3 : + + $3 + fi +enddef ; + +% since we take a log, this only works for positive ordinates + +vardef gaussian_fit (suffix p, $) (text t) = + save a ; numeric a[] ; + save q ; path q[] ; % fit to the log of the ordinate + for i=0 upto length p : + clearxy ; z = point i of p ; + if y>0 : + augment.q0(x,ln(y)) ; + augment.q1( + if known t : + if numeric t : (0,ln(t)) + elseif pair t : (xpart t,ln(ypart t)) + elseif path t : + if length t>=i : + hide(z1 = point i of t) + (x1,ln(y1)) + else : + origin + fi + fi + else : + (0,1) + fi ) ; + fi + endfor + polynomial_fit(q0,a,2,q1) ; + save e ; e := exp(sqrt(fit_chi_squared)) ; + fit_chi_squared := e * e ; + $1 := sqrt(-lntwo/a2) ; + $0 := -.5a1/a2 ; + $2 := exp(a0-.25*a1*a1/a2) ; + $3 := 0 ; % polynomial_fit will NOT work with a non-zero background! +enddef ; + +% lorentzian: y = a2 / (1 + ((x - a0)/a1)^2) + +vardef lorentzian_function (suffix $) (expr x) = + if $1 = 0 : + if x = $0 : $2 else : 0 fi + else : + $2 / (1 + ((x - $0)/$1)**2) + fi + if known $3 : + + $3 + fi +enddef ; + +vardef lorentzian_fit (suffix p, $) (text t) = + save a ; numeric a[] ; + save q ; path q ; % fit to the inverse of the ordinate + for i=0 upto length p : + if ypart(point i of p)<>0 : + augment.q(xpart(point i of p), 1/ypart(point i of p)) ; + fi + endfor + polynomial_fit(q,a,2,if t <> 0 : 1/(t) else : 0 fi) ; + fit_chi_squared := 1/fit_chi_squared ; + $0 := -.5a1/a2 ; + $2 := 1/(a0-.25a1*a1/a2) ; + $1 := sqrt((a0-.25a1*a1/a2)/a2) ; + $3 := 0 ; % polynomial_fit will NOT work with a non-zero background! +enddef ; diff --git a/metapost/context/base/mpiv/mp-grid.mpiv b/metapost/context/base/mpiv/mp-grid.mpiv new file mode 100644 index 000000000..b9243b1b9 --- /dev/null +++ b/metapost/context/base/mpiv/mp-grid.mpiv @@ -0,0 +1,142 @@ +%D \module +%D [ file=mp-grid.mpiv, +%D version=2000.07.10, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=grid support, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +%D Under construction. + +if known context_grid : endinput ; fi ; + +boolean context_grid ; context_grid := true ; + +string fmt_separator ; fmt_separator := "@" ; +numeric fmt_precision ; fmt_precision := 3 ; +boolean fmt_initialize ; fmt_initialize := false ; +boolean fmt_zerocheck ; fmt_zerocheck := true ; + +if unknown fmt_loaded : input "mp-form.mpiv" ; fi ; + +boolean fmt_pictures ; fmt_pictures := true ; + +def do_format = if fmt_pictures : format else : formatstr fi enddef ; +def do_mformat = if fmt_pictures : Mformat else : Mformatstr fi enddef ; + +numeric grid_eps ; grid_eps = eps ; + +def hlingrid (expr Min, Max, Step, Length, Width) text t = + image ( + for i=Min step Step until Max+grid_eps : + draw (origin--(Width,0)) shifted (0,i*(Length/Max)) t ; + endfor ; + ) ; +enddef ; + +def vlingrid (expr Min, Max, Step, Length, Height) text t = + image ( + for i=Min step Step until Max+grid_eps : + draw (origin--(0,Height)) shifted (i*(Length/Max),0) t ; + endfor ; + ) ; +enddef ; + +def hloggrid (expr Min, Max, Step, Length, Width) text t = + image ( + for i=max(Min,1) step Step until min(Max,10)+grid_eps : + draw (origin--(Width,0)) shifted (0,Length*log(i)) t ; + endfor ; + ) ; +enddef ; + +def vloggrid (expr Min, Max, Step, Length, Height) text t = + image ( + for i=max(Min,1) step Step until min(Max,10)+grid_eps : + draw (origin--(0,Height)) shifted (Length*log(i),0) t ; + endfor ; + ) ; +enddef ; + +vardef hlintext@#(expr Min, Max, Step, Length, Format) text t = + image ( + for i=Min step Step until Max+grid_eps : + draw textext@#(mfun_format_number(Format,i)) shifted (0,i*(Length/Max)) t ; + endfor ; + ) +enddef ; + +vardef vlintext@#(expr Min, Max, Step, Length, Format) text t = + image ( + for i=Min step Step until Max+grid_eps : + draw textext@#(mfun_format_number(Format,i)) shifted (i*(Length/Max),0) t ; + endfor ; + ) +enddef ; + +vardef hlogtext@#(expr Min, Max, Step, Length, Format) text t = + image ( + for i=max(Min,1) step Step until min(Max,10)+grid_eps : + draw textext@#(mfun_format_number(Format,i)) shifted (0,Length*log(i)) t ; + endfor ; + ) +enddef ; + +vardef vlogtext@#(expr Min, Max, Step, Length, Format) text t = + image ( + for i=max(Min,1) step Step until min(Max,10)+grid_eps : + draw textext@#(mfun_format_number(Format,i)) shifted (Length*log(i),0) t ; + endfor ; + ) +enddef ; + +vardef hlinlabel@#(expr Min, Max, Step, Length) text t = + image ( + for i=Min step Step until Max+grid_eps : + draw thelabel@#(decimal i,(0,i*(Length/Max))) t ; + endfor ; + ) +enddef ; + +vardef vlinlabel@#(expr Min, Max, Step, Length) text t = + image ( + for i=Min step Step until Max+grid_eps : + draw thelabel@#(decimal i,(i*(Length/Max),0)) t ; + endfor ; + ) +enddef ; + +vardef linlog(expr xy) = ( xpart xy, log(ypart xy)) enddef ; +vardef loglin(expr xy) = (log(xpart xy), ypart xy) enddef ; +vardef loglog(expr xy) = (log(xpart xy), log(ypart xy)) enddef ; +vardef linlin(expr xy) = ( (xpart xy), (ypart xy)) enddef ; + +vardef loglinpath primary p = processpath (p) (loglin) enddef ; +vardef linlogpath primary p = processpath (p) (linlog) enddef ; +vardef loglogpath primary p = processpath (p) (loglog) enddef ; +vardef linlinpath primary p = processpath (p) (linlin) enddef ; + +vardef processpath (expr p) (text pp) = + if path p : + for i=0 upto length(p)-1 : + pp(point i of p) .. controls + pp(postcontrol i of p) and + pp(precontrol (i+1) of p) .. + endfor + if cycle p : + cycle + else : + pp(point length(p) of p) + fi + elseif pair p : + pp(p) + else : + p + fi +enddef ; + diff --git a/metapost/context/base/mpiv/mp-grph.mpiv b/metapost/context/base/mpiv/mp-grph.mpiv new file mode 100644 index 000000000..5938b9f02 --- /dev/null +++ b/metapost/context/base/mpiv/mp-grph.mpiv @@ -0,0 +1,348 @@ +%D \module +%D [ file=mp-grph.mpiv, +%D version=2000.12.14, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=graphic text support, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +%D Under construction. + +if known context_grph : endinput ; fi ; + +boolean context_grph ; context_grph := true ; + +picture _currentpicture_ ; + +numeric _fig_nesting_ ; _fig_nesting_ := 0 ; + +def beginfig (expr c) = + _fig_nesting_ := _fig_nesting_ + 1 ; + if _fig_nesting_ = 1 : + begingroup + charcode := c ; + resetfig ; + scantokens extra_beginfig ; + fi ; +enddef ; + +def endfig = + ; % safeguard + if _fig_nesting_ = 1 : + scantokens extra_endfig ; + shipit ; + endgroup ; + fi ; + _fig_nesting_ := _fig_nesting_ - 1 ; +enddef; + +def resetfig = + clearxy ; + clearit ; + clearpen ; + pickup defaultpen ; + interim linecap := linecap ; + interim linejoin := linejoin ; + interim miterlimit := miterlimit ; + save _background_ ; color _background_ ; _background_ := background ; + save background ; color background ; background := _background_ ; + drawoptions () ; +enddef ; + +def protectgraphicmacros = + save showtext ; + save beginfig ; let beginfig = begingraphictextfig ; + save endfig ; let endfig = endgraphictextfig ; + save end ; let end = relax ; + interim prologues := prologues ; + resetfig ; % resets currentpicture +enddef ; + +numeric currentgraphictext ; currentgraphictext := 0 ; + +def data_mpo_file = job_name & "-mpgraph.mpo" enddef ; +def data_mpy_file = job_name & "-mpgraph.mpy" enddef ; + +def begingraphictextfig (expr n) = + foundpicture := n ; + scratchpicture := nullpicture ; +enddef ; + +def endgraphictextfig = + if foundpicture = currentgraphictext : + expandafter endinput + else : + scratchpicture := nullpicture ; + fi ; +enddef ; + +def loadfigure primary filename = + doloadfigure (filename) +enddef ; + +def doloadfigure (expr filename) text figureattributes = + begingroup ; + save figurenumber, figurepicture, number, fixedplace ; + numeric figurenumber ; figurenumber := 0 ; + boolean figureshift ; figureshift := true ; + picture figurepicture ; figurepicture := currentpicture ; + def number primary n = hide(figurenumber := n) enddef ; + def fixedplace = hide(figureshift := false) enddef ; + protectgraphicmacros ; + % defaults + interim linecap := rounded ; + interim linejoin := rounded ; + interim miterlimit := 10 ; + % + currentpicture := nullpicture ; + draw fullcircle figureattributes ; % expand number + currentpicture := nullpicture ; + def beginfig (expr n) = + currentpicture := nullpicture ; + if (figurenumber=n) or (figurenumber=0) : + let endfig = endinput ; + fi ; + enddef ; + let endfig = relax ; + readfile(filename) ; + if figureshift : + currentpicture := currentpicture shifted -llcorner currentpicture ; + fi ; + addto figurepicture also currentpicture figureattributes ; + currentpicture := figurepicture ; + endgroup ; +enddef ; + +% shared between old and new + +boolean mfun_gt_color_fill ; +boolean mfun_gt_color_draw ; +boolean mfun_gt_shade_fill ; +boolean mfun_gt_reverse_fill ; +boolean mfun_gt_outline_fill ; +picture mfun_gt_picture ; + +% this is the old version: + +def old_graphictext primary t = + hide ( + if mfun_trial_run : + let mfun_graphic_text = mfun_no_graphic_text ; + else : + let mfun_graphic_text = mfun_do_graphic_text ; + fi + ) + mfun_graphic_text(t) +enddef ; + +def mfun_do_graphic_text (expr t) = + % withprescript "gt_stage=final" + begingroup ; + save figurepicture ; picture figurepicture ; + figurepicture := currentpicture ; currentpicture := nullpicture ; + currentgraphictext := currentgraphictext + 1 ; + mfun_finish_graphic_text % picks up directives +enddef ; + +def mfun_no_graphic_text (expr t) text rest = + currentgraphictext := currentgraphictext + 1 ; + draw unitsquare + withprescript "gt_stage=trial" + withprescript "gt_index=" & decimal currentgraphictext + withpostscript t +enddef ; + +def mfun_finish_graphic_text text rest = + protectgraphicmacros ; % resets currentpicture + interim linecap := butt ; % normally rounded + interim linejoin := mitered ; % normally rounded + interim miterlimit := 10 ; % todo + let normalwithshade = withshade ; + save foundpicture, scratchpicture, str ; + save fill, draw, withshade, reversefill, outlinefill ; + save withfillcolor, withdrawcolor ; % quite important + numeric foundpicture ; picture scratchpicture ; string str ; + def draw expr p = + % the first, naive implementation was: + % addto scratchpicture doublepath p withpen currentpen ; + % but it is better to turn lines into fills + addto scratchpicture contour boundingbox + image (addto currentpicture doublepath p withpen currentpen) ; + enddef ; + def fill expr p = + addto scratchpicture contour p withpen currentpen ; + enddef ; + def mfun_gt_fill = enddef ; boolean mfun_gt_color_fill ; mfun_gt_color_fill := false ; + def mfun_gt_draw = enddef ; boolean mfun_gt_color_draw ; mfun_gt_color_draw := false ; + def mfun_gt_shade = enddef ; boolean mfun_gt_shade_fill ; mfun_gt_shade_fill := false ; + boolean mfun_gt_reverse_fill ; mfun_gt_reverse_fill := false ; + boolean mfun_gt_outline_fill ; mfun_gt_outline_fill := false ; + def reversefill = + hide(mfun_gt_reverse_fill := true ) + enddef ; + def outlinefill = + hide(mfun_gt_outline_fill := true ) + enddef ; + def withshade primary c = + hide(def mfun_gt_shade = normalwithshade c enddef ; mfun_gt_shade_fill := true ) + enddef ; + def withfillcolor primary c = + hide(def mfun_gt_fill = withcolor c enddef ; mfun_gt_color_fill := true ) + enddef ; + def withdrawcolor primary c = + hide(def mfun_gt_draw = withcolor c enddef ; mfun_gt_color_draw := true ) + enddef ; + scratchpicture := nullpicture ; + addto scratchpicture doublepath origin rest ; % pre-roll + for i within scratchpicture : % Below here is a dirty tricky test! + if (urcorner dashpart i) = origin : + mfun_gt_outline_fill := false ; + fi ; + endfor ; + scratchpicture := nullpicture ; + readfile(data_mpy_file) ; + scratchpicture := (scratchpicture shifted -llcorner scratchpicture) scaled (1/10) ; + if not mfun_gt_color_draw and not mfun_gt_color_fill : + mfun_gt_color_draw := true ; + fi + if mfun_gt_shade_fill : + mfun_gt_color_draw := false ; + mfun_gt_color_fill := false ; + fi ; + currentpicture := figurepicture ; + if mfun_gt_shade_fill : + for i within scratchpicture : + if filled i : + addto currentpicture contour pathpart i _op_ rest mfun_gt_shade ; + fi ; + endfor ; + else : + if mfun_gt_color_draw and not mfun_gt_reverse_fill : + for i within scratchpicture : + if mfun_gt_color_fill and mfun_gt_outline_fill : + addto currentpicture doublepath pathpart i _op_ rest mfun_gt_fill dashed nullpicture ; + fi ; + if filled i : + addto currentpicture doublepath pathpart i _op_ rest mfun_gt_draw ; + fi ; + endfor ; + fi ; + if mfun_gt_color_fill : + for i within scratchpicture : + if filled i : + addto currentpicture contour pathpart i _op_ rest mfun_gt_fill withpen pencircle scaled 0 ; + fi ; + endfor ; + fi ; + if mfun_gt_color_draw and mfun_gt_reverse_fill : + for i within scratchpicture : + if filled i : + addto currentpicture doublepath pathpart i _op_ rest mfun_gt_draw ; + fi ; + endfor ; + fi ; + for i within scratchpicture : + if stroked i : + addto currentpicture doublepath pathpart i _op_ rest mfun_gt_draw ; + fi ; + endfor ; + fi ; + endgroup ; +enddef ; + +% and this is the new one: + +% boolean mfun_gt_color_fill ; +% boolean mfun_gt_color_draw ; +% boolean mfun_gt_shade_fill ; +% boolean mfun_gt_reverse_fill ; +% picture mfun_gt_picture ; + +def mfun_gt_default = % somewhat compatible + scaled 11.5 + withpen pencircle scaled .1 +enddef ; + +def new_graphictext primary t = % use outlinetext instead + begingroup ; + mfun_graphic_text_indeed(t) +enddef ; + +def mfun_graphic_text_indeed(expr t) text rest = + interim linecap := butt ; % normally rounded + interim linejoin := mitered ; % normally rounded + % interim miterlimit := 10 ; % todo + % + let normalwithshade = withshade ; + % + save reversefill, outlinefill, withshade, withfillcolor, withdrawcolor ; + % + def mfun_gt_fill = enddef ; + def mfun_gt_draw = enddef ; + def mfun_gt_shade = enddef ; + % + mfun_gt_color_fill := false ; + mfun_gt_color_draw := false ; + mfun_gt_shade_fill := false ; + mfun_gt_reverse_fill := false ; + % + def reversefill = hide(mfun_gt_reverse_fill := true) enddef ; + def outlinefill = enddef ; + def withshade primary c = hide(mfun_gt_shade_fill := true; def mfun_gt_shade = normalwithshade c enddef ;) enddef ; + def withfillcolor primary c = hide(mfun_gt_color_fill := true; def mfun_gt_fill = withcolor c enddef ;) enddef ; + def withdrawcolor primary c = hide(mfun_gt_color_draw := true; def mfun_gt_draw = withcolor c enddef ;) enddef ; + % + mfun_gt_picture := nullpicture ; + addto mfun_gt_picture doublepath origin rest ; % preroll + mfun_gt_picture := nullpicture ; + % + def reversefill = enddef ; + def outlinefill = enddef ; + def withshade primary c = enddef ; + def withfillcolor primary c = enddef ; + def withdrawcolor primary c = enddef ; + % + if mfun_gt_shade_fill : + draw outlinetext.f(t)(mfun_gt_shade) rest; + elseif mfun_gt_color_fill and mfun_gt_color_draw : + if mfun_gt_reverse_fill : + draw outlinetext.r(t)(mfun_gt_default mfun_gt_fill rest)(mfun_gt_default mfun_gt_draw rest) ; + else : + draw outlinetext.b(t)(mfun_gt_default mfun_gt_draw rest)(mfun_gt_default mfun_gt_fill rest); + fi ; + elseif mfun_gt_color_fill : + draw outlinetext.f(t)(mfun_gt_default mfun_gt_fill rest) ; + elseif mfun_gt_color_draw : + draw outlinetext.d(t)(mfun_gt_default mfun_gt_draw rest) ; + else : + draw outlinetext.d(t)(mfun_gt_default rest) ; + fi ; + % + endgroup ; +enddef ; + +let graphictext = old_graphictext ; +%%% graphictext = new_graphictext ; % more than 10 times faster + +% example +% +% beginfig (1) ; +% graphictext +% "\vbox{\hsize10cm \input tufte }" +% scaled 8 +% withdrawcolor blue +% withfillcolor red +% withpen pencircle scaled 2pt ; +% endfig ; +% +% beginfig(1) ; +% loadfigure "gracht.mp" rotated 20 ; +% loadfigure "koe.mp" number 1 scaled 2 ; +% endfig ; +% +% end diff --git a/metapost/context/base/mpiv/mp-idea.mpiv b/metapost/context/base/mpiv/mp-idea.mpiv new file mode 100644 index 000000000..462d97553 --- /dev/null +++ b/metapost/context/base/mpiv/mp-idea.mpiv @@ -0,0 +1,30 @@ +% redpart (1,1,0,0) crashes + +% let normalredpart = redpart ; +% let normalgreenpart = greenpart ; +% let normalbluepart = bluepart ; +% let normalcyanpart = cyanpart ; +% let normalmagentapart = magentapart ; +% let normalyellowpart = yellowpart ; +% let normalblackpart = blackpart ; + +% vardef redpart expr p = if cmykcolor p : 1 - normalcyanpart p elseif rgbcolor p : normalredpart p else : p fi enddef ; +% vardef greenpart expr p = if cmykcolor p : 1 - normalmagentapart p elseif rgbcolor p : normalgreenpart p else : p fi enddef ; +% vardef bluepart expr p = if cmykcolor p : 1 - normalyellowpart p elseif rgbcolor p : normalbluepart p else : p fi enddef ; +% vardef cyanpart expr p = if cmykcolor p : normalcyanpart p elseif rgbcolor p : 1 - normalredpart p else : p fi enddef ; +% vardef magentapart expr p = if cmykcolor p : normalmagentapart p elseif rgbcolor p : 1 - normalgreenpart p else : p fi enddef ; +% vardef yellowpart expr p = if cmykcolor p : normalyellowpart p elseif rgbcolor p : 1 - normalbluepart p else : p fi enddef ; +% vardef blackpart expr p = if cmykcolor p : normalblackpart p elseif rgbcolor p : 0 else : p fi enddef ; + +vardef rcomponent expr p = if rgbcolor p : redpart p elseif cmykcolor p : 1 - cyanpart p else : p fi enddef ; +vardef gcomponent expr p = if rgbcolor p : greenpart p elseif cmykcolor p : 1 - magentapart p else : p fi enddef ; +vardef bcomponent expr p = if rgbcolor p : bluepart p elseif cmykcolor p : 1 - yellowpart p else : p fi enddef ; +vardef ccomponent expr p = if cmykcolor p : cyanpart p elseif rgbcolor p : 1 - redpart p else : p fi enddef ; +vardef mcomponent expr p = if cmykcolor p : magentapart p elseif rgbcolor p : 1 - greenpart p else : p fi enddef ; +vardef ycomponent expr p = if cmykcolor p : yellowpart p elseif rgbcolor p : 1 - bluepart p else : p fi enddef ; +vardef bcomponent expr p = if cmykcolor p : blackpart p elseif rgbcolor p : 0 else : p fi enddef ; + +vardef somecolor = (1,1,0,0) enddef ; + +fill OverlayBox withcolor (rcomponent somecolor,gcomponent somecolor,bcomponent somecolor) ; +fill OverlayBox withcolor (ccomponent somecolor,mcomponent somecolor,ycomponent somecolor,bcomponent somecolor) ; diff --git a/metapost/context/base/mpiv/mp-luas.mpiv b/metapost/context/base/mpiv/mp-luas.mpiv new file mode 100644 index 000000000..c919ba215 --- /dev/null +++ b/metapost/context/base/mpiv/mp-luas.mpiv @@ -0,0 +1,99 @@ +%D \module +%D [ file=mp-luas.mpiv, +%D version=2014.04.14, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=\LUA, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +if known context_luas : endinput ; fi ; + +% When I prototyped the runscript primitive I was just thinking of a usage like +% the original \directlua primitive in luatex: genererate something and pipe +% that back to metapost, and have access to some internals. Instead of compiling +% the code a the metapost end here we delegate that to the lua end. Only strings +% get passed. Of course in the end the real usage got a bit beyong the intended +% usage. So, in addition to some definitions here there are and will be use in +% other metafun modules too. Of course in retrospect I should have done this five +% years earlier. + +boolean context_luas ; context_luas := true ; + +% First variant: +% +% let lua = runscript ; +% +% Second variant: +% +% vardef lua (text t) = +% runscript(for s = t : s & endfor "") +% enddef; +% +% Third variant: +% +% vardef lua (text t) = +% runscript("" for s = t : +% if string s : +% & s +% elseif numeric s : +% & decimal s +% elseif boolean s : +% & if s : "true" else "false" fi +% fi endfor) +% enddef; +% +% Fourth variant: + +vardef mlib_luas_luacall(text t) = + runscript("" for s = t : + if string s : + & s + elseif numeric s : + & decimal s + elseif boolean s : + & if s : "true" else "false" fi + fi endfor + ) +enddef ; + +vardef mlib_luas_lualist(expr c)(text t) = + save b ; boolean b ; b := false ; + runscript(c & "(" for s = t : + if b : + & "," + else : + hide(b := true) + fi + if string s : + & ditto & s & ditto + elseif numeric s : + & decimal s + elseif boolean s : + & if s : "true" else "false" fi + fi endfor & ")" + ) +enddef ; + +def luacall = mlib_luas_luacall enddef ; % why no let + +vardef lualist@#(text t) = mlib_luas_lualist(str @#)(t) enddef ; + +string mlib_luas_s ; % saves save/restore + +vardef lua@#(text t) = + mlib_luas_s := str @# ; + if length(mlib_luas_s) > 0 : + mlib_luas_lualist(mlib_luas_s,t) + else : + mlib_luas_luacall(t) + fi +enddef ; + +vardef MP@#(text t) = + mlib_luas_lualist("MP." & str @#,t) +enddef ; diff --git a/metapost/context/base/mpiv/mp-mlib.mpiv b/metapost/context/base/mpiv/mp-mlib.mpiv new file mode 100644 index 000000000..2c84d01c2 --- /dev/null +++ b/metapost/context/base/mpiv/mp-mlib.mpiv @@ -0,0 +1,1450 @@ +%D \module +%D [ file=mp-mlib.mpiv, +%D version=2008.03.21, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=plugins, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +if unknown mplib : endinput ; fi ; +if known context_mlib : endinput ; fi ; + +boolean context_mlib ; context_mlib := true ; + +%D Color and transparency +%D +%D Separable: + +newinternal normaltransparent ; normaltransparent := 1 ; +newinternal multiplytransparent ; multiplytransparent := 2 ; +newinternal screentransparent ; screentransparent := 3 ; +newinternal overlaytransparent ; overlaytransparent := 4 ; +newinternal softlighttransparent ; softlighttransparent := 5 ; +newinternal hardlighttransparent ; hardlighttransparent := 6 ; +newinternal colordodgetransparent ; colordodgetransparent := 7 ; +newinternal colorburntransparent ; colorburntransparent := 8 ; +newinternal darkentransparent ; darkentransparent := 9 ; +newinternal lightentransparent ; lightentransparent := 10 ; +newinternal differencetransparent ; differencetransparent := 11 ; +newinternal exclusiontransparent ; exclusiontransparent := 12 ; + +%D Nonseparable: + +newinternal huetransparent ; huetransparent := 13 ; +newinternal saturationtransparent ; saturationtransparent := 14 ; +newinternal colortransparent ; colortransparent := 15 ; +newinternal luminositytransparent ; luminositytransparent := 16 ; + +vardef transparency_alternative_to_number(expr name) = + if string name : + if expandafter known scantokens(name & "transparent") : + scantokens(name & "transparent") + else : + 0 + fi + elseif name < 17 : + name + else : + 0 + fi +enddef ; + +def namedcolor (expr n) = + 1 + withprescript "sp_type=named" + withprescript "sp_name=" & n +enddef ; + +% def spotcolor(expr n, v) = +% 1 +% withprescript "sp_type=spot" +% withprescript "sp_name=" & n +% withprescript "sp_value=" & (if numeric v : decimal v else : v fi) +% enddef ; +% +% def multitonecolor(expr name, fractions, components, value) = +% 1 +% withprescript "sp_type=multitone" +% withprescript "sp_name=" & name +% withprescript "sp_fractions=" & decimal fractions +% withprescript "sp_components=" & components +% withprescript "sp_value=" & value +% enddef ; + +def spotcolor(expr n, v) = + 1 + withprescript "sp_type=spot" + withprescript "sp_name=" & n + withprescript "sp_value=" & colordecimals v +enddef ; + +def multitonecolor(expr name)(text t) = + 1 + withprescript "sp_type=multitone" + withprescript "sp_name=" & name + withprescript "sp_value=" & colordecimalslist(t) +enddef ; + +def transparent(expr a, t)(text c) = % use withtransparency instead + 1 % this permits withcolor x intoshade y + withprescript "tr_alternative=" & decimal transparency_alternative_to_number(a) + withprescript "tr_transparency=" & decimal t + withcolor c +enddef ; + +% def withtransparency(expr a, t) = +% withprescript "tr_alternative=" & decimal transparency_alternative_to_number(a) +% withprescript "tr_transparency=" & decimal t +% enddef ; + +let transparency = pair ; + +% def withtransparency expr t = +% withprescript "tr_alternative=" & decimal transparency_alternative_to_number(xpart t) +% withprescript "tr_transparency=" & decimal ypart t +% enddef ; +% +% withtransparency (1,.5) +% withtransparency ("normal",.5) + +def withtransparency (expr t) (text rest) = + if pair t : + withprescript "tr_alternative=" & decimal transparency_alternative_to_number(xpart t) + withprescript "tr_transparency=" & decimal ypart t + else : + mfun_with_transparency (transparency_alternative_to_number(t)) + fi rest +enddef ; + +def mfun_with_transparency (expr a) expr t = + withprescript "tr_alternative=" & decimal a + withprescript "tr_transparency=" & decimal t +enddef ; + +def cmyk(expr c, m, y, k) = % provided for downward compability + (c,m,y,k) +enddef ; + +% Texts (todo: better strut ratio, now .7 hardcoded, should be passed) + +newinternal textextoffset ; textextoffset := 0 ; + +%%%%%%% mfun_tt_w[], mfun_tt_h[], mfun_tt_d[] ; % we can consider using colors (less hash space) +color mfun_tt_b ; +numeric mfun_tt_n ; mfun_tt_n := 0 ; +picture mfun_tt_p ; mfun_tt_p := nullpicture ; +picture mfun_tt_o ; mfun_tt_o := nullpicture ; +picture mfun_tt_c ; mfun_tt_c := nullpicture ; + +if unknown mfun_trial_run : + boolean mfun_trial_run ; + mfun_trial_run := false ; +else : + % already defined before the format is loaded +fi ; + +if unknown mfun_first_run : + boolean mfun_first_run ; + mfun_first_run := true ; +else : + % already defined before the format is loaded +fi ; + +def mfun_reset_tex_texts = + mfun_tt_n := 0 ; + mfun_tt_p := nullpicture ; + mfun_tt_o := nullpicture ; % redundant + mfun_tt_c := nullpicture ; % redundant +enddef ; + +def mfun_flush_tex_texts = + addto currentpicture also mfun_tt_p +enddef ; + +extra_endfig := "mfun_flush_tex_texts ;" & extra_endfig ; +extra_beginfig := extra_beginfig & "mfun_reset_tex_texts ;" ; + +% We collect and flush them all, as we can also have temporary textexts +% that gets never really flushed but are used for calculations. So, we +% flush twice: once in location in order to pick up e.g. color properties, +% and once at the end because we need to flush missing ones. + +% see mp-keep.mpiv for older code + +% vardef rawtextext(expr s) = % todo: avoid currentpicture +% if s = "" : +% nullpicture +% else : +% mfun_tt_n := mfun_tt_n + 1 ; +% mfun_tt_c := nullpicture ; +% if mfun_trial_run : +% mfun_tt_o := nullpicture ; +% addto mfun_tt_o doublepath origin _op_ ; % save drawoptions +% addto mfun_tt_c doublepath unitsquare +% withprescript "tx_number=" & decimal mfun_tt_n +% withprescript "tx_stage=trial" +% withprescript "tx_color=" & colordecimals colorpart mfun_tt_o +% withpostscript s ; +% addto mfun_tt_p also mfun_tt_c ; +% elseif known mfun_tt_d[mfun_tt_n] : +% addto mfun_tt_c doublepath unitsquare +% xscaled mfun_tt_w[mfun_tt_n] +% yscaled (mfun_tt_h[mfun_tt_n] + mfun_tt_d[mfun_tt_n]) +% shifted (0,-mfun_tt_d[mfun_tt_n]) +% withprescript "tx_number=" & decimal mfun_tt_n +% withprescript "tx_stage=final" ; +% else : +% addto mfun_tt_c doublepath unitsquare ; % unitpicture +% fi ; +% mfun_tt_c +% fi +% enddef ; + +boolean mfun_onetime_textext ; mfun_onetime_textext := false ; + +vardef rawtextext(expr s) = % todo: avoid currentpicture + if s = "" : + mfun_onetime_textext := false ; + nullpicture + else : + mfun_tt_n := mfun_tt_n + 1 ; + mfun_tt_c := nullpicture ; + if mfun_trial_run : + mfun_tt_o := nullpicture ; + addto mfun_tt_o doublepath origin _op_ ; % save drawoptions + addto mfun_tt_c doublepath unitsquare + withprescript "tx_number=" & decimal mfun_tt_n + withprescript "tx_stage=trial" + withprescript "tx_color=" & colordecimals colorpart mfun_tt_o + withpostscript s ; + if not mfun_onetime_textext : + addto mfun_tt_p also mfun_tt_c + withprescript "tx_global=yes" ; + fi ; + else : + mfun_tt_b := lua.mp.tt_dimensions(mfun_tt_n) ; + addto mfun_tt_c doublepath unitsquare + xscaled redpart mfun_tt_b + yscaled (greenpart mfun_tt_b + bluepart mfun_tt_b) + shifted (0,- bluepart mfun_tt_b) + withprescript "tx_number=" & decimal mfun_tt_n + withprescript "tx_stage=final" ; + fi ; + mfun_onetime_textext := false ; + mfun_tt_c + fi +enddef ; + +% More text + +defaultfont := "Mono" ; +defaultscale := 1 ; + +extra_beginfig := extra_beginfig & "defaultscale:=1;" ; + +vardef fontsize expr name = + save size ; numeric size ; + size := bbwidth(textext("\MPfontsizehskip{" & name & "}")) ; + if size = 0 : + 12pt + else : + size + fi +enddef ; + +pair mfun_laboff ; mfun_laboff := (0,0) ; +pair mfun_laboff.lft ; mfun_laboff.lft := (-1,0) ; +pair mfun_laboff.rt ; mfun_laboff.rt := (1,0) ; +pair mfun_laboff.bot ; mfun_laboff.bot := (0,-1) ; +pair mfun_laboff.top ; mfun_laboff.top := (0,1) ; +pair mfun_laboff.ulft ; mfun_laboff.ulft := (-.7,.7) ; +pair mfun_laboff.urt ; mfun_laboff.urt := (.7,.7) ; +pair mfun_laboff.llft ; mfun_laboff.llft := -(.7,.7) ; +pair mfun_laboff.lrt ; mfun_laboff.lrt := (.7,-.7) ; + +pair mfun_laboff.d ; mfun_laboff.d := mfun_laboff ; +pair mfun_laboff.dlft ; mfun_laboff.dlft := mfun_laboff.lft ; +pair mfun_laboff.drt ; mfun_laboff.drt := mfun_laboff.rt ; +pair mfun_laboff.origin ; mfun_laboff.origin := origin ; +pair mfun_laboff.raw ; mfun_laboff.raw := origin ; + +pair mfun_laboff.l ; mfun_laboff.l := mfun_laboff.lft ; +pair mfun_laboff.r ; mfun_laboff.r := mfun_laboff.rt ; +pair mfun_laboff.b ; mfun_laboff.b := mfun_laboff.bot ; +pair mfun_laboff.t ; mfun_laboff.t := mfun_laboff.top ; +pair mfun_laboff.l_t ; mfun_laboff.l_t := mfun_laboff.ulft ; +pair mfun_laboff.r_t ; mfun_laboff.r_t := mfun_laboff.urt ; +pair mfun_laboff.l_b ; mfun_laboff.l_b := mfun_laboff.llft ; +pair mfun_laboff.r_b ; mfun_laboff.r_b := mfun_laboff.lrt ; +pair mfun_laboff.t_l ; mfun_laboff.t_l := mfun_laboff.ulft ; +pair mfun_laboff.t_r ; mfun_laboff.t_r := mfun_laboff.urt ; +pair mfun_laboff.b_l ; mfun_laboff.b_l := mfun_laboff.llft ; +pair mfun_laboff.b_r ; mfun_laboff.b_r := mfun_laboff.lrt ; + +mfun_labxf := 0.5 ; +mfun_labxf.lft := mfun_labxf.l := 1 ; +mfun_labxf.rt := mfun_labxf.r := 0 ; +mfun_labxf.bot := mfun_labxf.b := 0.5 ; +mfun_labxf.top := mfun_labxf.t := 0.5 ; +mfun_labxf.ulft := mfun_labxf.l_t := mfun_labxf.t_l := 1 ; +mfun_labxf.urt := mfun_labxf.r_t := mfun_labxf.t_r := 0 ; +mfun_labxf.llft := mfun_labxf.l_b := mfun_labxf.b_l := 1 ; +mfun_labxf.lrt := mfun_labxf.r_b := mfun_labxf.b_r := 0 ; + +mfun_labxf.d := mfun_labxf ; +mfun_labxf.dlft := mfun_labxf.lft ; +mfun_labxf.drt := mfun_labxf.rt ; +mfun_labxf.origin := 0 ; +mfun_labxf.raw := 0 ; + +mfun_labyf := 0.5 ; +mfun_labyf.lft := mfun_labyf.l := 0.5 ; +mfun_labyf.rt := mfun_labyf.r := 0.5 ; +mfun_labyf.bot := mfun_labyf.b := 1 ; +mfun_labyf.top := mfun_labyf.t := 0 ; +mfun_labyf.ulft := mfun_labyf.l_t := mfun_labyf.t_l := 0 ; +mfun_labyf.urt := mfun_labyf.r_t := mfun_labyf.t_r := 0 ; +mfun_labyf.llft := mfun_labyf.l_b := mfun_labyf.b_l := 1 ; +mfun_labyf.lrt := mfun_labyf.r_b := mfun_labyf.b_r := 1 ; + +mfun_labyf.d := mfun_labyf ; +mfun_labyf.dlft := mfun_labyf.lft ; +mfun_labyf.drt := mfun_labyf.rt ; +mfun_labyf.origin := 0 ; +mfun_labyf.raw := 0 ; + +mfun_labtype := 0 ; +mfun_labtype.lft := mfun_labtype.l := 1 ; +mfun_labtype.rt := mfun_labtype.r := 2 ; +mfun_labtype.bot := mfun_labtype.b := 3 ; +mfun_labtype.top := mfun_labtype.t := 4 ; +mfun_labtype.ulft := mfun_labtype.l_t := mfun_labtype.t_l := 5 ; +mfun_labtype.urt := mfun_labtype.r_t := mfun_labtype.t_r := 6 ; +mfun_labtype.llft := mfun_labtype.l_b := mfun_labtype.b_l := 7 ; +mfun_labtype.lrt := mfun_labtype.r_b := mfun_labtype.b_r := 8 ; +mfun_labtype.d := 10 ; +mfun_labtype.dlft := 11 ; +mfun_labtype.drt := 12 ; +mfun_labtype.origin := 0 ; +mfun_labtype.raw := 0 ; + +% installlabel.foo ( 0, 1, 1, (.5,-1) ) ; + +vardef installlabel@# (expr type, x, y, offset) = + numeric labtype@# ; labtype@# := type ; + pair laboff @# ; laboff @# := offset ; + numeric labxf @# ; labxf @# := x ; + numeric labyf @# ; labyf @# := y ; +enddef ; + +% we save the plain variant + +vardef plain_thelabel@#(expr p,z) = + if string p : + plain_thelabel@#(rawtextext("\definedfont[" & defaultfont & "]" & p) scaled defaultscale,z) + else : + p shifted (z + labeloffset*laboff@# - (labxf@#*lrcorner p + labyf@#*ulcorner p + (1-labxf@#-labyf@#)*llcorner p)) + fi +enddef; + +def plain_label = % takes two arguments, contrary to textext that takes one + normaldraw plain_thelabel +enddef ; + +let mfun_label = label ; +let mfun_thelabel = thelabel ; + +def useplainlabels = % somehow let doesn't work for all code + def label = plain_label enddef ; + def thelabel = plain_thelabel enddef ; +enddef ; + +def usemetafunlabels = + let label = mfun_label ; + let thelabel = mfun_thelabel ; +enddef ; + +vardef dotlabel@#(expr s,z) text t_ = + label@#(s,z) t_ ; + interim linecap := rounded ; + normaldraw z withpen pencircle scaled dotlabeldiam t_ ; +enddef ; + +plain_compatibility_data := plain_compatibility_data & "save label, thelabel ;" & "useplainlabels ;" ; + +% next comes own own: + +vardef thetextext@#(expr p,z) = + % interim labeloffset := textextoffset ; + if string p : + thetextext@#(rawtextext(p),z) + elseif numeric p : + thetextext@#(rawtextext(decimal p),z) + else : + p + if (mfun_labtype@# >= 10) : + shifted (0,ypart center p) + fi + shifted (z + textextoffset*mfun_laboff@# - (mfun_labxf@#*lrcorner p + mfun_labyf@#*ulcorner p + (1-mfun_labxf@#-mfun_labyf@#)*llcorner p)) + fi +enddef ; + +vardef textext@#(expr p) = % no draw here + thetextext@#(p,origin) +enddef ; + +vardef onetimetextext@#(expr p) = % no draw here + mfun_onetime_textext := true ; + thetextext@#(p,origin) +enddef ; + +vardef thelabel@#(expr p,z) = + if string p : + thelabel@#(rawtextext("\definedfont[" & defaultfont & "]" & p) scaled defaultscale,z) + else : + p shifted (z + labeloffset*mfun_laboff@# - (mfun_labxf@#*lrcorner p + mfun_labyf@#*ulcorner p + (1-mfun_labxf@#-mfun_labyf@#)*llcorner p)) + fi +enddef; + +def label = % takes two arguments, contrary to textext that takes one + normaldraw thelabel +enddef ; + +vardef anchored@#(expr p, z) = % beware: no "+ mfun_laboff@#" here (never!) + p + if (mfun_labtype@# >= 10) : + shifted (0,ypart center p) + fi + shifted (z + (mfun_labxf@#*lrcorner p + mfun_labyf@#*ulcorner p + (1-mfun_labxf@#-mfun_labyf@#)*llcorner p)) +enddef ; + +let normalinfont = infont ; + +primarydef s infont name = % nasty hack + if name = "" : + textext(s) + else : + textext("\definedfont[" & name & "]" & s) + fi +enddef ; + +% Helper + +string mfun_prescript_separator ; mfun_prescript_separator := char(13) ; + +% Shades + +% for while we had this: + +newinternal shadefactor ; shadefactor := 1 ; % currently obsolete +pair shadeoffset ; shadeoffset := origin ; % currently obsolete +boolean trace_shades ; trace_shades := false ; % still there + +% def withlinearshading (expr a, b) = +% withprescript "sh_type=linear" +% withprescript "sh_domain=0 1" +% withprescript "sh_factor=" & decimal shadefactor +% withprescript "sh_center_a=" & ddecimal (a shifted shadeoffset) +% withprescript "sh_center_b=" & ddecimal (b shifted shadeoffset) +% enddef ; +% +% def withcircularshading (expr a, b, ra, rb) = +% withprescript "sh_type=circular" +% withprescript "sh_domain=0 1" +% withprescript "sh_factor=" & decimal shadefactor +% withprescript "sh_center_a=" & ddecimal (a shifted shadeoffset) +% withprescript "sh_center_b=" & ddecimal (b shifted shadeoffset) +% withprescript "sh_radius_a=" & decimal ra +% withprescript "sh_radius_b=" & decimal rb +% enddef ; +% +% def withshading (expr how)(text rest) = +% if how = "linear" : +% withlinearshading(rest) +% elseif how = "circular" : +% withcircularshading(rest) +% else : +% % nothing +% fi +% enddef ; +% +% def withfromshadecolor expr t = +% withprescript "sh_color=into" +% withprescript "sh_color_a=" & colordecimals t +% enddef ; + +% def withtoshadecolor expr t = +% withprescript "sh_color=into" +% withprescript "sh_color_b=" & colordecimals t +% enddef ; + +% but this is nicer + +% fill fullcircle scaled 10cm +% withshademethod "circular" +% withshadevector (5cm,1cm) +% withshadecenter (.1,.5) +% withshadedomain (.2,.6) +% withshadefactor 1.2 +% withshadecolors (red,green) +% ; + +path mfun_shade_path ; +numeric mfun_shade_step ; mfun_shade_step := 0 ; + +def withshadestep = + hide(mfun_shade_step := mfun_shade_step + 1 ;) + mfun_withshadestep +enddef ; + +def mfun_withshadestep (text t) = + withprescript "sh_step=" & decimal mfun_shade_step + t +enddef ; + +primarydef p withshademethod m = + hide( + mfun_shade_path := p ; + mfun_shade_step := 1 ; + ) + p + withprescript "sh_domain=0 1" + withprescript "sh_color=into" + withprescript "sh_color_a=" & colordecimals white + withprescript "sh_color_b=" & colordecimals black + if m = "linear" : + withprescript "sh_type=linear" + withprescript "sh_factor=1" + withprescript "sh_center_a=" & ddecimal llcorner p + withprescript "sh_center_b=" & ddecimal urcorner p + else : + withprescript "sh_type=circular" + withprescript "sh_factor=1.2" + withprescript "sh_center_a=" & ddecimal center p + withprescript "sh_center_b=" & ddecimal center p + withprescript "sh_radius_a=" & decimal 0 + withprescript "sh_radius_b=" & decimal ( max ( + (xpart center p - xpart llcorner p) ++ (ypart center p - ypart llcorner p), + (xpart center p - xpart ulcorner p) ++ (ypart ulcorner p - ypart center p), + (xpart lrcorner p - xpart center p) ++ (ypart center p - ypart lrcorner p), + (xpart urcorner p - xpart center p) ++ (ypart urcorner p - ypart center p) + ) ) + fi +enddef ; + +def withshadevector expr a = + withprescript "sh_center_a=" & ddecimal (point xpart a of mfun_shade_path) + withprescript "sh_center_b=" & ddecimal (point ypart a of mfun_shade_path) +enddef ; + +def withshadecenter expr a = + withprescript "sh_center_a=" & ddecimal ( + center mfun_shade_path shifted ( + xpart a * bbwidth (mfun_shade_path)/2, + ypart a * bbheight(mfun_shade_path)/2 + ) + ) +enddef ; + +def withshadedomain expr d = + withprescript "sh_domain=" & ddecimal d +enddef ; + +def withshadefactor expr f = + withprescript "sh_factor=" & decimal f +enddef ; + +% def withshadebound (expr a) = +% if mfun_shade_step > 0 : +% withprescript "sh_bound_" & decimal mfun_shade_step & "=" & decimal a +% fi +% enddef ; + +def withshadefraction expr a = + if mfun_shade_step > 0 : + withprescript "sh_fraction_" & decimal mfun_shade_step & "=" & decimal a + fi +enddef ; + +def withshadecolors (expr a, b) = + if mfun_shade_step > 0 : + withprescript "sh_color=into" + withprescript "sh_color_a_" & decimal mfun_shade_step & "=" & colordecimals a + withprescript "sh_color_b_" & decimal mfun_shade_step & "=" & colordecimals b + else : + withprescript "sh_color=into" + withprescript "sh_color_a=" & colordecimals a + withprescript "sh_color_b=" & colordecimals b + fi +enddef ; + +primarydef a shadedinto b = % withcolor red shadedinto green + 1 % does not work with transparency + withprescript "sh_color=into" + withprescript "sh_color_a=" & colordecimals a + withprescript "sh_color_b=" & colordecimals b +enddef ; + +primarydef p withshade sc = + p withprescript mfun_defined_cs_pre[sc] +enddef ; + +def defineshade suffix s = + mfun_defineshade(str s) +enddef ; + +def mfun_defineshade (expr s) text t = + expandafter def scantokens s = t enddef ; +enddef ; + +def shaded text s = + s +enddef ; + +% Old macros: + +def withcircularshade (expr a, b, ra, rb, ca, cb) = + withprescript "sh_type=circular" + withprescript "sh_domain=0 1" + withprescript "sh_factor=1" + withprescript "sh_color_a=" & colordecimals ca + withprescript "sh_color_b=" & colordecimals cb + withprescript "sh_center_a=" & ddecimal a % (a shifted shadeoffset) + withprescript "sh_center_b=" & ddecimal b % (b shifted shadeoffset) + withprescript "sh_radius_a=" & decimal ra + withprescript "sh_radius_b=" & decimal rb +enddef ; + +def withlinearshade (expr a, b, ca, cb) = + withprescript "sh_type=linear" + withprescript "sh_domain=0 1" + withprescript "sh_factor=1" + withprescript "sh_color_a=" & colordecimals ca + withprescript "sh_color_b=" & colordecimals cb + withprescript "sh_center_a=" & ddecimal a % (a shifted shadeoffset) + withprescript "sh_center_b=" & ddecimal b % (b shifted shadeoffset) +enddef ; + +% replaced (obsolete): + +def set_linear_vector (suffix a,b)(expr p,n) = + if (n=1) : a := llcorner p ; b := urcorner p ; + elseif (n=2) : a := lrcorner p ; b := ulcorner p ; + elseif (n=3) : a := urcorner p ; b := llcorner p ; + elseif (n=4) : a := ulcorner p ; b := lrcorner p ; + elseif (n=5) : a := .5[ulcorner p,llcorner p] ; b := .5[urcorner p,lrcorner p] ; + elseif (n=6) : a := .5[llcorner p,lrcorner p] ; b := .5[ulcorner p,urcorner p] ; + elseif (n=7) : a := .5[lrcorner p,urcorner p] ; b := .5[llcorner p,ulcorner p] ; + elseif (n=8) : a := .5[urcorner p,ulcorner p] ; b := .5[lrcorner p,llcorner p] ; + else : a := .5[ulcorner p,llcorner p] ; b := .5[urcorner p,lrcorner p] ; + fi ; +enddef ; + +def set_circular_vector (suffix ab,r)(expr p,n) = + if (n=1) : ab := llcorner p ; + elseif (n=2) : ab := lrcorner p ; + elseif (n=3) : ab := urcorner p ; + elseif (n=4) : ab := ulcorner p ; + else : ab := center p ; r := .5r ; + fi ; +enddef ; + +def circular_shade (expr p, n, ca, cb) = + begingroup ; + save ab, r ; pair ab ; numeric r ; + r := (xpart lrcorner p - xpart llcorner p) ++ (ypart urcorner p - ypart lrcorner p) ; + set_circular_vector(ab,r)(p,n) ; + fill p withcircularshade(ab,ab,0,r,ca,cb) ; + if trace_shades : + drawarrow ab -- ab shifted (0,r) withpen pencircle scaled 1pt withcolor .5white ; + fi ; + endgroup ; +enddef ; + +def linear_shade (expr p, n, ca, cb) = + begingroup ; + save a, b ; pair a, b ; + set_linear_vector(a,b)(p,n) ; + fill p withlinearshade(a,b,ca,cb) ; + if trace_shades : + drawarrow a -- b withpen pencircle scaled 1pt withcolor .5white ; + fi ; + endgroup ; +enddef ; + +string mfun_defined_cs_pre[] ; numeric mfun_defined_cs ; mfun_defined_cs := 0 ; + +vardef define_circular_shade (expr a, b, ra, rb, ca, cb) = + mfun_defined_cs := mfun_defined_cs + 1 ; + mfun_defined_cs_pre[mfun_defined_cs] := "sh_type=circular" + & mfun_prescript_separator & "sh_domain=0 1" + & mfun_prescript_separator & "sh_factor=1" + & mfun_prescript_separator & "sh_color_a=" & colordecimals ca + & mfun_prescript_separator & "sh_color_b=" & colordecimals cb + & mfun_prescript_separator & "sh_center_a=" & ddecimal a % (a shifted shadeoffset) + & mfun_prescript_separator & "sh_center_b=" & ddecimal b % (b shifted shadeoffset) + & mfun_prescript_separator & "sh_radius_a=" & decimal ra + & mfun_prescript_separator & "sh_radius_b=" & decimal rb + ; + mfun_defined_cs +enddef ; + +vardef define_linear_shade (expr a, b, ca, cb) = + mfun_defined_cs := mfun_defined_cs + 1 ; + mfun_defined_cs_pre[mfun_defined_cs] := "sh_type=linear" + & mfun_prescript_separator & "sh_domain=0 1" + & mfun_prescript_separator & "sh_factor=1" + & mfun_prescript_separator & "sh_color_a=" & colordecimals ca + & mfun_prescript_separator & "sh_color_b=" & colordecimals cb + & mfun_prescript_separator & "sh_center_a=" & ddecimal a % (a shifted shadeoffset) + & mfun_prescript_separator & "sh_center_b=" & ddecimal b % (b shifted shadeoffset) + ; + mfun_defined_cs +enddef ; + +% I lost the example code that uses this: +% +% vardef define_sampled_linear_shade(expr a,b,n)(text t) = +% mfun_defined_cs := mfun_defined_cs + 1 ; +% mfun_defined_cs_pre[mfun_defined_cs] := "ssh_type=linear" +% & mfun_prescript_separator & "ssh_center_a=" & ddecimal (a shifted shadeoffset) +% & mfun_prescript_separator & "ssh_center_b=" & ddecimal (b shifted shadeoffset) +% & mfun_prescript_separator & "ssh_nofcolors=" & decimal n +% & mfun_prescript_separator & "ssh_domain=" & domstr +% & mfun_prescript_separator & "ssh_extend=" & extstr +% & mfun_prescript_separator & "ssh_colors=" & colstr +% & mfun_prescript_separator & "ssh_bounds=" & bndstr +% & mfun_prescript_separator & "ssh_ranges=" & ranstr +% ; +% mfun_defined_cs +% enddef ; +% +% vardef define_sampled_circular_shade(expr a,b,ra,rb,n)(text t) = +% mfun_defined_cs := mfun_defined_cs + 1 ; +% mfun_defined_cs_pre[mfun_defined_cs] := "ssh_type=circular" +% & mfun_prescript_separator & "ssh_center_a=" & ddecimal (a shifted shadeoffset) +% & mfun_prescript_separator & "ssh_radius_a=" & decimal ra +% & mfun_prescript_separator & "ssh_center_b=" & ddecimal (b shifted shadeoffset) +% & mfun_prescript_separator & "ssh_radius_b=" & decimal rb +% & mfun_prescript_separator & "ssh_nofcolors=" & decimal n +% & mfun_prescript_separator & "ssh_domain=" & domstr +% & mfun_prescript_separator & "ssh_extend=" & extstr +% & mfun_prescript_separator & "ssh_colors=" & colstr +% & mfun_prescript_separator & "ssh_bounds=" & bndstr +% & mfun_prescript_separator & "ssh_ranges=" & ranstr +% ; +% mfun_defined_cs +% enddef ; + +% vardef predefined_linear_shade (expr p, n, ca, cb) = +% save a, b, sh ; pair a, b ; +% set_linear_vector(a,b)(p,n) ; +% define_linear_shade (a,b,ca,cb) +% enddef ; +% +% vardef predefined_circular_shade (expr p, n, ca, cb) = +% save ab, r ; pair ab ; numeric r ; +% r := (xpart lrcorner p - xpart llcorner p) ++ (ypart urcorner p - ypart lrcorner p) ; +% set_circular_vector(ab,r)(p,n) ; +% define_circular_shade(ab,ab,0,r,ca,cb) +% enddef ; + +% Layers + +def onlayer primary name = + withprescript "la_name=" & name +enddef ; + +% Figures + +% def externalfigure primary filename = +% doexternalfigure (filename) +% enddef ; +% +% def doexternalfigure (expr filename) text transformation = +% if true : % a bit incompatible esp scaled 1cm now scaled the natural size +% draw rawtextext("\externalfigure[" & filename & "]") transformation ; +% else : +% draw unitsquare transformation withprescript "fg_name=" & filename ; +% fi ; +% enddef ; + +def withmask primary filename = + withprescript "fg_mask=" & filename +enddef ; + +def externalfigure primary filename = + if false : + rawtextext("\externalfigure[" & filename & "]") + else : + image ( + addto currentpicture doublepath unitsquare + withprescript "fg_name=" & filename ; + ) +% unitsquare +% withpen pencircle scaled 0 +% withprescript "fg_name=" & filename + fi +enddef ; + +def figure primary filename = + rawtextext("\externalfigure[" & filename & "]") +enddef ; + +% Positions + +def register (expr tag, width, height, offset) = +% draw image ( + addto currentpicture doublepath unitsquare xscaled width yscaled height shifted offset + withprescript "ps_label=" & tag ; +% ) ; % no transformations +enddef ; + +% outlines (todo: pass around less arguments) + +numeric currentoutlinetext ; currentoutlinetext := 0 ; + +vardef mfun_do_outline_text_flush (expr kind, n, x, y) (text t) = + if kind = "f" : + mfun_do_outline_text_f (n, x, y) (t) + elseif kind = "d" : + mfun_do_outline_text_d (n, x, y) (t) + elseif kind = "b" : + mfun_do_outline_text_b (n, x, y) (t) + elseif kind = "r" : + mfun_do_outline_text_r (n, x, y) (t) + elseif kind = "p" : + mfun_do_outline_text_p (n, x, y) (t) + else : + mfun_do_outline_text_n (n, x, y) (t) + fi ; +enddef ; + +numeric mfun_do_outline_n ; mfun_do_outline_n := 0 ; + +vardef mfun_do_outline_text_f (expr n, x, y) (text t) = + mfun_do_outline_n := 0 ; + for i=t : + mfun_do_outline_n := mfun_do_outline_n + 1 ; + if mfun_do_outline_n = n : + fill i shifted(x,y) mfun_do_outline_options_f + else : + nofill i shifted(x,y) + fi ; + endfor ; +enddef ; + +vardef mfun_do_outline_text_d (expr n, x, y) (text t) = + for i=t : + draw i shifted(x,y) mfun_do_outline_options_d ; + endfor ; +enddef ; + +vardef mfun_do_outline_text_p (expr n, x, y) (text t) = + for i=t : + draw i shifted(x,y) ; + endfor ; +enddef ; + +vardef mfun_do_outline_text_b (expr n, x, y) (text t) = + mfun_do_outline_n := 0 ; + for i=t : + mfun_do_outline_n := mfun_do_outline_n + 1 ; + if mfun_do_outline_n = n : + fill i shifted(x,y) mfun_do_outline_options_f + else : + nofill i shifted(x,y) + fi ; + endfor ; + for i=t : + draw i shifted(x,y) mfun_do_outline_options_d ; + endfor ; +enddef ; + +vardef mfun_do_outline_text_r (expr n, x, y) (text t) = + mfun_do_outline_n := 0 ; + for i=t : + draw i shifted(x,y) mfun_do_outline_options_d ; + endfor ; + for i=t : + mfun_do_outline_n := mfun_do_outline_n + 1 ; + if mfun_do_outline_n = n : + fill i shifted(x,y) mfun_do_outline_options_f + else : + nofill i shifted(x,y) + fi ; + endfor ; +enddef ; + +vardef mfun_do_outline_text_n (expr n, x, y) (text t) = + mfun_do_outline_n := 0 ; + for i=t : + mfun_do_outline_n := mfun_do_outline_n + 1 ; + if mfun_do_outline_n = n : fill else : nofill fi i shifted(x,y) ; + endfor ; +enddef ; + +vardef mfun_do_outline_text_set_f (text f) text r = + def mfun_do_outline_options_f = f enddef ; + def mfun_do_outline_options_r = r enddef ; +enddef ; + +vardef mfun_do_outline_text_set_d (text d) text r = + def mfun_do_outline_options_d = d enddef ; + def mfun_do_outline_options_r = r enddef ; +enddef ; + +vardef mfun_do_outline_text_set_b (text f) (text d) text r = + def mfun_do_outline_options_f = f enddef ; + def mfun_do_outline_options_d = d enddef ; + def mfun_do_outline_options_r = r enddef ; +enddef ; + +vardef mfun_do_outline_text_set_r (text d) (text f) text r = + def mfun_do_outline_options_d = d enddef ; + def mfun_do_outline_options_f = f enddef ; + def mfun_do_outline_options_r = r enddef ; +enddef ; + +vardef mfun_do_outline_text_set_n text r = + def mfun_do_outline_options_r = r enddef ; +enddef ; + +vardef mfun_do_outline_text_set_p = +enddef ; + +def mfun_do_outline_options_d = enddef ; +def mfun_do_outline_options_f = enddef ; +def mfun_do_outline_options_r = enddef ; + +vardef outlinetext@# (expr t) text rest = + save kind ; string kind ; kind := str @# ; + currentoutlinetext := currentoutlinetext + 1 ; + image ( normaldraw image ( + if mfun_trial_run : + % lua.mp.report("set outline text",currentoutlinetext); + normaldraw unitsquare + withprescript "ot_stage=trial" + withprescript "ot_index=" & decimal currentoutlinetext + withprescript "ot_kind=" & kind + withpostscript t ; + else : + % lua.mp.report("get outline text",currentoutlinetext); + if kind = "f" : + mfun_do_outline_text_set_f rest ; + elseif kind = "d" : + mfun_do_outline_text_set_d rest ; + elseif kind = "b" : + mfun_do_outline_text_set_b rest ; + elseif kind = "r" : + mfun_do_outline_text_set_r rest ; + elseif kind = "p" : + mfun_do_outline_text_set_p ; + else : + mfun_do_outline_text_set_n rest ; + fi ; + lua.mp.get_outline_text(currentoutlinetext) ; + fi ; + ) mfun_do_outline_options_r ; ) +enddef ; + +% A few helpers: + +numeric mfun_c_b_llx, mfun_c_b_h, mfun_c_b_w, mfun_c_b_l ; + +vardef checkedbounds(expr llx,lly,urx,ury) = + mfun_c_b_llx := min(xpart llcorner currentpicture,llx) ; + mfun_c_b_urx := max(xpart urcorner currentpicture,urx) ; + mfun_c_b_lly := min(ypart llcorner currentpicture,lly) ; + mfun_c_b_ury := max(ypart urcorner currentpicture,ury) ; + (mfun_c_b_llx,mfun_c_b_lly) -- + (mfun_c_b_urx,mfun_c_b_lly) -- + (mfun_c_b_urx,mfun_c_b_ury) -- + (mfun_c_b_llx,mfun_c_b_ury) -- cycle +enddef ; + +vardef checkbounds(expr llx,lly,urx,ury) = + setbounds currentpicture to checkedbounds(llx,lly,urx,ury) ; +enddef ; + +vardef strut(expr ht,dp) = + setbounds currentpicture to checkedbounds(0,0,ht,dp) ; +enddef ; + +vardef rule(expr wd,ht,dp) = + image (fill (0,-dp)--(wd,-dp)--(wd,ht)--(0,ht)--cycle) +enddef ; + + +% Housekeeping + +extra_beginfig := extra_beginfig & "currentgraphictext := 0 ; " ; +extra_beginfig := extra_beginfig & "currentoutlinetext := 0 ; " ; +extra_endfig := extra_endfig & "finishsavingdata ; " ; +extra_endfig := extra_endfig & "mfun_reset_tex_texts ; " ; + +% Bonus + +vardef verbatim(expr s) = + ditto & "\detokenize{" & s & "}" & ditto +enddef ; + +% New + +def bitmapimage(expr xresolution, yresolution, data) = + image ( + addto currentpicture doublepath unitsquare + withprescript "bm_xresolution=" & decimal xresolution + withprescript "bm_yresolution=" & decimal yresolution + withpostscript data ; + ) +enddef ; + +% Experimental: +% +% property p ; p = properties(withcolor (1,1,0,0)) ; +% fill fullcircle scaled 20cm withproperties p ; + +let property = picture ; + +vardef properties(text t) = + image(draw unitcircle t) +enddef ; + +if metapostversion < 1.770 : + + def withproperties expr p = + if colormodel p = 3 : + withcolor greypart p + elseif colormodel p = 5 : + withcolor (redpart p,greenpart p,bluepart p) + elseif colormodel p = 7 : + withcolor (cyanpart p,magentapart p,yellowpart p,blackpart p) + fi + enddef ; + +else : + + def withproperties expr p = + if colormodel p = 3 : + withcolor greypart p + elseif colormodel p = 5 : + withcolor (redpart p,greenpart p,bluepart p) + elseif colormodel p = 7 : + withcolor (cyanpart p,magentapart p,yellowpart p,blackpart p) + fi + withprescript prescriptpart p + withpostscript postscriptpart p + enddef ; + +fi ; + +% Experimental: + +primarydef t asgroup s = % s = isolated|knockout + begingroup + save grouppicture, wrappedpicture, groupbounds ; + picture grouppicture, wrappedpicture ; path groupbounds ; + grouppicture := if picture t : t else : image(draw t) fi ; + groupbounds := boundingbox grouppicture ; + wrappedpicture:= nullpicture ; + addto wrappedpicture contour groupbounds + withprescript "gr_state=start" + withprescript "gr_type=" & s + withprescript "gr_llx=" & decimal xpart llcorner groupbounds + withprescript "gr_lly=" & decimal ypart llcorner groupbounds + withprescript "gr_urx=" & decimal xpart urcorner groupbounds + withprescript "gr_ury=" & decimal ypart urcorner groupbounds ; + addto wrappedpicture also grouppicture ; + addto wrappedpicture contour groupbounds + withprescript "gr_state=stop" ; + wrappedpicture + endgroup +enddef ; + +% Also experimental ... needs to be made better ... so it can change! + +string mfun_auto_align[] ; + +mfun_auto_align[0] := "rt" ; +mfun_auto_align[1] := "urt" ; +mfun_auto_align[2] := "top" ; +mfun_auto_align[3] := "ulft" ; +mfun_auto_align[4] := "lft" ; +mfun_auto_align[5] := "llft" ; +mfun_auto_align[6] := "bot" ; +mfun_auto_align[7] := "lrt" ; +mfun_auto_align[8] := "rt" ; + +def autoalign(expr n) = + scantokens mfun_auto_align[round((n mod 360)/45)] +enddef ; + +% draw textext.autoalign(60) ("\strut oeps 1") ; +% draw textext.autoalign(160)("\strut oeps 2") ; +% draw textext.autoalign(260)("\strut oeps 3") ; +% draw textext.autoalign(360)("\strut oeps 4") ; + +% new +% +% passvariable("version","1.0") ; +% passvariable("number",123) ; +% passvariable("string","whatever") ; +% passvariable("point",(1,2)) ; +% passvariable("triplet",(1,2,3)) ; +% passvariable("quad",(1,2,3,4)) ; +% passvariable("boolean",false) ; +% passvariable("path",fullcircle scaled 1cm) ; + +% we could use the new lua interface but there is not that much gain i.e. +% we still need to serialize + +vardef mfun_point_to_string(expr p,i) = + decimal xpart (point i of p) & " " & + decimal ypart (point i of p) & " " & + decimal xpart (precontrol i of p) & " " & + decimal ypart (precontrol i of p) & " " & + decimal xpart (postcontrol i of p) & " " & + decimal ypart (postcontrol i of p) +enddef ; + +vardef mfun_transform_to_string(expr t) = + decimal xxpart t & " " & % rx + decimal xypart t & " " & % sx + decimal yxpart t & " " & % sy + decimal yypart t & " " & % ry + decimal xpart t & " " & % tx + decimal ypart t % ty +enddef ; + +vardef mfun_numeric_to_string(expr n) = + decimal n +enddef ; + +vardef mfun_pair_to_string(expr p) = + decimal xpart p & " " & + decimal ypart p +enddef ; + +vardef mfun_rgbcolor_to_string(expr c) = + decimal redpart c & " " & + decimal greenpart c & " " & + decimal bluepart c +enddef ; + +vardef mfun_cmykcolor_to_string(expr c) = + decimal cyanpart c & " " & + decimal magentapart c & " " & + decimal yellowpart c & " " & + decimal blackpart c +enddef ; + +vardef mfun_greycolor_to_string(expr n) = + decimal n +enddef ; + +vardef mfun_path_to_string(expr p) = + mfun_point_to_string(p,0) for i=1 upto length(p) : & " " & mfun_point_to_string(p,i) endfor +enddef ; + +vardef mfun_boolean_to_string(expr b) = + if b : "true" else : "false" fi +enddef ; + +% def passvariable(expr key, value) = +% special +% if numeric value : "1:" & key & "=" & mfun_numeric_to_string(value) +% elseif pair value : "4:" & key & "=" & mfun_pair_to_string(value) +% elseif rgbcolor value : "5:" & key & "=" & mfun_rgbcolor_to_string(value) +% elseif cmykcolor value : "6:" & key & "=" & mfun_cmykcolor_to_string(value) +% elseif boolean value : "3:" & key & "=" & mfun_boolean_to_string(value) +% elseif path value : "7:" & key & "=" & mfun_path_to_string(value) +% elseif transform value : "8:" & key & "=" & mfun_transform_to_string(value) +% else : "2:" & key & "=" & value +% fi ; +% enddef ; + +vardef tostring(expr value) = + if numeric value : mfun_numeric_to_string(value) + elseif pair value : mfun_pair_to_string(value) + elseif rgbcolor value : mfun_rgbcolor_to_string(value) + elseif cmykcolor value : mfun_cmykcolor_to_string(value) + elseif greycolor value : mfun_greycolor_to_string(value) + elseif boolean value : mfun_boolean_to_string(value) + elseif path value : mfun_path_to_string(value) + elseif transform value : mfun_transform_to_string(value) + else : value + fi +enddef ; + +vardef mfun_tagged_string(expr value) = + if numeric value : "1:" & mfun_numeric_to_string(value) + elseif pair value : "4:" & mfun_pair_to_string(value) + elseif rgbcolor value : "5:" & mfun_rgbcolor_to_string(value) + elseif cmykcolor value : "6:" & mfun_cmykcolor_to_string(value) + elseif boolean value : "3:" & mfun_boolean_to_string(value) + elseif path value : "7:" & mfun_path_to_string(value) + elseif transform value : "8:" & mfun_transform_to_string(value) + else : "2:" & value + fi +enddef ; + +% amore flexible variant for passing data to context + +vardef mfun_point_to_lua(expr p,i) = + "{" & + decimal xpart (point i of p) & "," & + decimal ypart (point i of p) & "," & + decimal xpart (precontrol i of p) & "," & + decimal ypart (precontrol i of p) & "," & + decimal xpart (postcontrol i of p) & "," & + decimal ypart (postcontrol i of p) + & "}" +enddef ; + +vardef mfun_transform_to_lua(expr t) = + "{" & + decimal xxpart t & "," & % rx + decimal xypart t & "," & % sx + decimal yxpart t & "," & % sy + decimal yypart t & "," & % ry + decimal xpart t & "," & % tx + decimal ypart t % ty + & "}" +enddef ; + +vardef mfun_numeric_to_lua(expr n) = + decimal n +enddef ; + +vardef mfun_pair_to_lua(expr p) = + "{" & + decimal xpart p & "," & + decimal ypart p + & "}" +enddef ; + +vardef mfun_rgbcolor_to_lua(expr c) = + "{" & + decimal redpart c & "," & + decimal greenpart c & "," & + decimal bluepart c + & "}" +enddef ; + +vardef mfun_cmykcolor_to_lua(expr c) = + "{" & + decimal cyanpart c & "," & + decimal magentapart c & "," & + decimal yellowpart c & "," & + decimal blackpart c + & "}" +enddef ; + +vardef mfun_path_to_lua(expr p) = + "{" & + mfun_point_to_lua(p,0) for i=1 upto length(p) : & "," & mfun_point_to_lua(p,i) endfor + & "}" +enddef ; + +vardef mfun_boolean_to_lua(expr b) = + if b : "true" else : "false" fi +enddef ; + +vardef mfun_string_to_lua(expr s) = + "[==[" & s & "]==]" +enddef ; + +def mfun_to_lua(expr key)(expr value)(text t) = + special "metapost.variables['" & key & "']=" & t(value) ; +enddef ; + +def mfun_array_to_lua(expr key)(suffix value)(expr first, last, stp)(text t) = + special + "metapost.variables['" & key & "']={" + for i=first step stp until last : + & "[" & decimal i & "]=" & t(value[i]) & "," + endfor + & "}" ; +enddef ; + +def passvariable(expr key, value) = + if numeric value : mfun_to_lua(key,value,mfun_numeric_to_lua) + elseif pair value : mfun_to_lua(key,value,mfun_pair_to_lua) + elseif string value : mfun_to_lua(key,value,mfun_string_to_lua) + elseif boolean value : mfun_to_lua(key,value,mfun_boolean_to_lua) + elseif path value : mfun_to_lua(key,value,mfun_path_to_lua) + elseif rgbcolor value : mfun_to_lua(key,value,mfun_rgbcolor_to_lua) + elseif cmykcolor value : mfun_to_lua(key,value,mfun_cmykcolor_to_lua) + elseif transform value : mfun_to_lua(key,value,mfun_transform_to_lua) + fi ; +enddef ; + +def passarrayvariable(expr key)(suffix values)(expr first, last, stp) = + if numeric values[first] : mfun_array_to_lua(key,values,first,last,stp,mfun_numeric_to_lua) + elseif pair values[first] : mfun_array_to_lua(key,values,first,last,stp,mfun_pair_to_lua) + elseif string values[first] : mfun_array_to_lua(key,values,first,last,stp,mfun_string_to_lua) + elseif boolean values[first] : mfun_array_to_lua(key,values,first,last,stp,mfun_boolean_to_lua) + elseif path values[first] : mfun_array_to_lua(key,values,first,last,stp,mfun_path_to_lua) + elseif rgbcolor values[first] : mfun_array_to_lua(key,values,first,last,stp,mfun_rgbcolor_to_lua) + elseif cmykcolor values[first] : mfun_array_to_lua(key,values,first,last,stp,mfun_cmykcolor_to_lua) + elseif transform values[first] : mfun_array_to_lua(key,values,first,last,stp,mfun_transform_to_lua) + fi ; +enddef ; + +def startpassingvariable(expr k) = + begingroup ; + save stoppassingvariable, startarray, stoparray, starthash, stophash, index, key, value, slot, entry ; + let stoppassingvariable = mfun_stop_lua_variable ; + let startarray = mfun_start_lua_array ; + let stoparray = mfun_stop_lua_array ; + let starthash = mfun_start_lua_hash ; + let stophash = mfun_stop_lua_hash ; + let index = mfun_lua_index ; + let key = mfun_lua_key ; + let value = mfun_lua_value ; + let slot = mfun_lua_slot ; + let entry = mfun_lua_entry ; + save s ; string s ; + s := "metapost.variables['" & k & "']=" +enddef ; + +def mfun_stop_lua_variable = + ; + special substring(0,length(s)-1) of s ; + endgroup ; +enddef ; + +% currently there is no difference between array and hash + +def mfun_start_lua_array = + & "{" +enddef ; + +def mfun_stop_lua_array = + & "}," +enddef ; + +def mfun_start_lua_hash = + & "{" +enddef ; + +def mfun_stop_lua_hash = + & "}," +enddef ; + +def mfun_lua_key(expr k) = + & "['" & k & "']=" +enddef ; + +def mfun_lua_index(expr k) = + & "[" & decimal k & "]=" +enddef ; + +def mfun_lua_value(expr v) = + if numeric v : & mfun_numeric_to_lua(v) & "," + elseif pair v : & mfun_pair_to_lua(v) & "," + elseif string v : & mfun_string_to_lua(v) & "," + elseif boolean v : & mfun_boolean_to_lua(v) & "," + elseif path v : & mfun_path_to_lua(v) & "," + elseif rgbcolor v : & mfun_rgbcolor_to_lua(v) & "," + elseif cmykcolor v : & mfun_cmykcolor_to_lua(v) & "," + elseif transform v : & mfun_transform_to_lua(v) & "," + fi +enddef ; + +def mfun_lua_entry(expr k, v) = + mfun_lua_key(k) + mfun_lua_value(v) +enddef ; + +def mfun_lua_slot(expr k, v) = + mfun_lua_index(k) + mfun_lua_value(v) +enddef ; + +% moved here from mp-grap.mpiv + +% vardef escaped_format(expr s) = +% "" for n=0 upto length(s) : & +% if ASCII substring (n,n+1) of s = 37 : +% "@" +% else : +% substring (n,n+1) of s +% fi +% endfor +% enddef ; + +numeric mfun_esc_b ; % begin +numeric mfun_esc_l ; % length +string mfun_esc_s ; % character + +mfun_esc_s := "%" ; % or: char(37) + +% this one is the fastest when we have a match + +% vardef escaped_format(expr s) = +% "" for n=0 upto length(s)-1 : & +% % if ASCII substring (n,n+1) of s = 37 : +% if substring (n,n+1) of s = mfun_esc_s : +% "@" +% else : +% substring (n,n+1) of s +% fi +% endfor +% enddef ; + +% this one wins when we have no match + +vardef escaped_format(expr s) = + mfun_esc_b := 0 ; + mfun_esc_l := length(s) ; + for n=0 upto mfun_esc_l-1 : + % if ASCII substring (n,n+1) of s = 37 : + if substring (n,n+1) of s = mfun_esc_s : + if mfun_esc_b = 0 : + "" + fi + if n >= mfun_esc_b : + & (substring (mfun_esc_b,n) of s) + exitif numeric begingroup mfun_esc_b := n+1 endgroup ; % hide + fi + & "@" + fi + endfor + if mfun_esc_b = 0 : + s + % elseif mfun_esc_b > 0 : + elseif mfun_esc_b < mfun_esc_l : + & (substring (mfun_esc_b,mfun_esc_l) of s) + fi +enddef ; + +vardef strfmt(expr f, x) = "\MPgraphformat{" & escaped_format(f) & "}{" & mfun_tagged_string(x) & "}" enddef ; +vardef varfmt(expr f, x) = "\MPformatted{" & escaped_format(f) & "}{" & mfun_tagged_string(x) & "}" enddef ; + +vardef format (expr f, x) = textext(strfmt(f, x)) enddef ; +vardef formatted(expr f, x) = textext(varfmt(f, x)) enddef ; + +% could be this (something to discuss with alan as it involves graph): +% +% vardef format (expr f,x) = lua.mp.graphformat(f,mfun_tagged_string(x) enddef ; +% vardef formatted(expr f,x) = lua.mp.format (f, x) enddef ; +% +% def strfmt = format enddef ; % old +% def varfmt = formatted enddef ; % old + +% new + +def eofill text t = fill t withpostscript "evenodd" enddef ; +def nofill text t = fill t withpostscript "collect" enddef ; +%%% eoclip text t = clip t withpostscript "evenodd" enddef ; % no postscripts yet + +% def withrule expr r = +% if (t = "even-odd") or (t = "evenodd") : withpostscript "evenodd" fi +% enddef ; diff --git a/metapost/context/base/mpiv/mp-page.mpiv b/metapost/context/base/mpiv/mp-page.mpiv new file mode 100644 index 000000000..a6fa3fba3 --- /dev/null +++ b/metapost/context/base/mpiv/mp-page.mpiv @@ -0,0 +1,664 @@ +%D \module +%D [ file=mp-page.mpiv, +%D version=1999.03.10, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=page enhancements, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +%D This module is rather preliminary and subjected to changes. + +if known context_page : endinput ; fi ; + +boolean context_page ; context_page := true ; + +% def LoadPageState = +% % now always set +% enddef ; +% +% if unknown PageStateAvailable : +% boolean PageStateAvailable ; +% PageStateAvailable := false ; +% fi ; +% +% if unknown OnRightPage : +% boolean OnRightPage ; +% OnRightPage := true ; +% fi ; +% +% if unknown OnOddPage : +% boolean OnOddPage ; +% OnOddPage := true ; +% fi ; +% +% if unknown InPageBody : +% boolean InPageBody ; +% InPageBody := false ; +% fi ; +% +% string CurrentLayout ; +% +% CurrentLayout := "default" ; +% +% PageNumber := 0 ; +% PaperHeight := 845.04684pt ; +% PaperWidth := 597.50787pt ; +% PrintPaperHeight := 845.04684pt ; +% PrintPaperWidth := 597.50787pt ; +% TopSpace := 71.12546pt ; +% BottomSpace := 0.0pt ; +% BackSpace := 71.13275pt ; +% CutSpace := 0.0pt ; +% MakeupHeight := 711.3191pt ; +% MakeupWidth := 426.78743pt ; +% TopHeight := 0.0pt ; +% TopDistance := 0.0pt ; +% HeaderHeight := 56.90294pt ; +% HeaderDistance := 0.0pt ; +% TextHeight := 597.51323pt ; +% FooterDistance := 0.0pt ; +% FooterHeight := 56.90294pt ; +% BottomDistance := 0.0pt ; +% BottomHeight := 0.0pt ; +% LeftEdgeWidth := 0.0pt ; +% LeftEdgeDistance := 0.0pt ; +% LeftMarginWidth := 75.58197pt ; +% LeftMarginDistance := 11.99829pt ; +% TextWidth := 426.78743pt ; +% RightMarginDistance := 11.99829pt ; +% RightMarginWidth := 75.58197pt ; +% RightEdgeDistance := 0.0pt ; +% RightEdgeWidth := 0.0pt ; +% +% PageOffset := 0.0pt ; +% PageDepth := 0.0pt ; +% +% LayoutColumns := 0 ; +% LayoutColumnDistance:= 0.0pt ; +% LayoutColumnWidth := 0.0pt ; +% +% LeftEdge := -4 ; Top := -40 ; +% LeftEdgeSeparator := -3 ; TopSeparator := -30 ; +% LeftMargin := -2 ; Header := -20 ; +% LeftMarginSeparator := -1 ; HeaderSeparator := -10 ; +% Text := 0 ; Text := 0 ; +% RightMarginSeparator := +1 ; FooterSeparator := +10 ; +% RightMargin := +2 ; Footer := +20 ; +% RightEdgeSeparator := +3 ; BottomSeparator := +30 ; +% RightEdge := +4 ; Bottom := +40 ; +% +% Margin := LeftMargin ; % obsolete +% Edge := LeftEdge ; % obsolete +% InnerMargin := RightMargin ; % obsolete +% InnerEdge := RightEdge ; % obsolete +% OuterMargin := LeftMargin ; % obsolete +% OuterEdge := LeftEdge ; % obsolete +% +% InnerMarginWidth := 0pt ; +% OuterMarginWidth := 0pt ; +% InnerMarginDistance := 0pt ; +% OuterMarginDistance := 0pt ; +% +% InnerEdgeWidth := 0pt ; +% OuterEdgeWidth := 0pt ; +% InnerEdgeDistance := 0pt ; +% OuterEdgeDistance := 0pt ; +% +% % path Area[][] ; +% % pair Location[][] ; +% % path Field[][] ; +% +% % numeric Hstep[] ; +% % numeric Hsize[] ; +% % numeric Vstep[] ; +% % numeric Vsize[] ; +% +% path Page ; +% +% numeric HorPos ; +% numeric VerPos ; +% +% % for VerPos=Top step 10 until Bottom: +% % for HorPos=LeftEdge step 1 until RightEdge: +% % Area[HorPos][VerPos] := origin--cycle ; +% % Area[VerPos][HorPos] := Area[HorPos][VerPos] ; +% % Location[HorPos][VerPos] := origin ; +% % Location[VerPos][HorPos] := Location[HorPos][VerPos] ; +% % Field[HorPos][VerPos] := origin--cycle ; +% % Field[VerPos][HorPos] := Field[HorPos][VerPos] ; +% % endfor ; +% % endfor ; +% +% % def LoadPageState = +% % scantokens "input mp-state.tmp" ; +% % enddef ; +% +% numeric mfun_temp ; +% +% def SwapPageState = +% if not OnRightPage : +% BackSpace := PaperWidth-MakeupWidth-BackSpace ; +% CutSpace := PaperWidth-MakeupWidth-CutSpace ; +% mfun_temp := LeftMarginWidth ; +% LeftMarginWidth := RightMarginWidth ; +% RightMarginWidth := mfun_temp ; +% mfun_temp := LeftMarginDistance ; +% LeftMarginDistance := RightMarginDistance ; +% RightMarginDistance := mfun_temp ; +% mfun_temp := LeftEdgeWidth ; +% LeftEdgeWidth := RightEdgeWidth ; +% RightEdgeWidth := mfun_temp ; +% mfun_temp := LeftEdgeDistance ; +% LeftEdgeDistance := RightEdgeDistance ; +% RightEdgeDistance := mfun_temp ; +% +% % these are now available as ..Width and ..Distance +% +% Margin := LeftMargin ; +% Edge := LeftEdge ; +% InnerMargin := RightMargin ; +% InnerEdge := RightEdge ; +% OuterMargin := LeftMargin ; +% OuterEdge := LeftEdge ; +% else : +% Margin := RightMargin ; +% Edge := RightEdge ; +% InnerMargin := LeftMargin ; +% InnerEdge := LeftEdge ; +% OuterMargin := RightMargin ; +% OuterEdge := RightEdge ; +% fi ; +% enddef ; + +% the new way: + +def LoadPageState = + % now always set +enddef ; + +if unknown PageStateAvailable : + boolean PageStateAvailable ; + PageStateAvailable := false ; +fi ; + +string CurrentLayout ; CurrentLayout := "default" ; + +vardef PaperHeight = lua.mp.PaperHeight () enddef ; +vardef PaperWidth = lua.mp.PaperWidth () enddef ; +vardef PrintPaperHeight = lua.mp.PrintPaperHeight () enddef ; +vardef PrintPaperWidth = lua.mp.PrintPaperWidth () enddef ; +vardef TopSpace = lua.mp.TopSpace () enddef ; +vardef BottomSpace = lua.mp.BottomSpace () enddef ; +vardef BackSpace = lua.mp.BackSpace () enddef ; +vardef CutSpace = lua.mp.CutSpace () enddef ; +vardef MakeupHeight = lua.mp.MakeupHeight () enddef ; +vardef MakeupWidth = lua.mp.MakeupWidth () enddef ; +vardef TopHeight = lua.mp.TopHeight () enddef ; +vardef TopDistance = lua.mp.TopDistance () enddef ; +vardef HeaderHeight = lua.mp.HeaderHeight () enddef ; +vardef HeaderDistance = lua.mp.HeaderDistance () enddef ; +vardef TextHeight = lua.mp.TextHeight () enddef ; +vardef FooterDistance = lua.mp.FooterDistance () enddef ; +vardef FooterHeight = lua.mp.FooterHeight () enddef ; +vardef BottomDistance = lua.mp.BottomDistance () enddef ; +vardef BottomHeight = lua.mp.BottomHeight () enddef ; +vardef LeftEdgeWidth = lua.mp.LeftEdgeWidth () enddef ; +vardef LeftEdgeDistance = lua.mp.LeftEdgeDistance () enddef ; +vardef LeftMarginWidth = lua.mp.LeftMarginWidth () enddef ; +vardef LeftMarginDistance = lua.mp.LeftMarginDistance () enddef ; +vardef TextWidth = lua.mp.TextWidth () enddef ; +vardef RightMarginDistance = lua.mp.RightMarginDistance () enddef ; +vardef RightMarginWidth = lua.mp.RightMarginWidth () enddef ; +vardef RightEdgeDistance = lua.mp.RightEdgeDistance () enddef ; +vardef RightEdgeWidth = lua.mp.RightEdgeWidth () enddef ; +vardef InnerMarginDistance = lua.mp.InnerMarginDistance () enddef ; +vardef InnerMarginWidth = lua.mp.InnerMarginWidth () enddef ; +vardef OuterMarginDistance = lua.mp.OuterMarginDistance () enddef ; +vardef OuterMarginWidth = lua.mp.OuterMarginWidth () enddef ; +vardef InnerEdgeDistance = lua.mp.InnerEdgeDistance () enddef ; +vardef InnerEdgeWidth = lua.mp.InnerEdgeWidth () enddef ; +vardef OuterEdgeDistance = lua.mp.OuterEdgeDistance () enddef ; +vardef OuterEdgeWidth = lua.mp.OuterEdgeWidth () enddef ; +vardef PageOffset = lua.mp.PageOffset () enddef ; +vardef PageDepth = lua.mp.PageDepth () enddef ; +vardef LayoutColumns = lua.mp.LayoutColumns () enddef ; +vardef LayoutColumnDistance = lua.mp.LayoutColumnDistance() enddef ; +vardef LayoutColumnWidth = lua.mp.LayoutColumnWidth () enddef ; + +vardef OnRightPage = lua.mp.OnRightPage () enddef ; +vardef OnOddPage = lua.mp.OnOddPage () enddef ; +vardef InPageBody = lua.mp.InPageBody () enddef ; + +vardef RealPageNumber = lua.mp.RealPageNumber () enddef ; +vardef PageNumber = lua.mp.PageNumber () enddef ; +vardef NOfPages = lua.mp.NOfPages () enddef ; +vardef LastPageNumber = lua.mp.LastPageNumber () enddef ; % duplicates + +vardef CurrentColumn = lua.mp.CurrentColumn () enddef ; +vardef NOfColumns = lua.mp.NOfColumns () enddef ; + +vardef BaseLineSkip = lua.mp.BaseLineSkip () enddef ; +vardef LineHeight = lua.mp.LineHeight () enddef ; +vardef BodyFontSize = lua.mp.BodyFontSize () enddef ; + +vardef TopSkip = lua.mp.TopSkip () enddef ; +vardef StrutHeight = lua.mp.StrutHeight () enddef ; +vardef StrutDepth = lua.mp.StrutDepth () enddef ; + +vardef CurrentWidth = lua.mp.CurrentWidth () enddef ; +vardef CurrentHeight = lua.mp.CurrentHeight () enddef ; + +vardef HSize = lua.mp.HSize () enddef ; % duplicates +vardef VSize = lua.mp.VSize () enddef ; % duplicates + +vardef EmWidth = lua.mp.EmWidth () enddef ; +vardef ExHeight = lua.mp.ExHeight () enddef ; + +vardef PageFraction = lua.mp.PageFraction () enddef ; + +vardef SpineWidth = lua.mp.SpineWidth () enddef ; +vardef PaperBleed = lua.mp.PaperBleed () enddef ; + +boolean mfun_swapped ; + +def SwapPageState = + mfun_swapped := true ; % eventually this will go ! +enddef ; + +extra_beginfig := extra_beginfig & "mfun_swapped := false ;" ; + +vardef LeftMarginWidth = if mfun_swapped and not OnRightPage : lua.mp.RightMarginWidth () else : lua.mp.LeftMarginWidth () fi enddef ; +vardef RightMarginWidth = if mfun_swapped and not OnRightPage : lua.mp.LeftMarginWidth () else : lua.mp.RightMarginWidth () fi enddef ; +vardef LeftMarginDistance = if mfun_swapped and not OnRightPage : lua.mp.RightMarginDistance() else : lua.mp.LeftMarginDistance () fi enddef ; +vardef RightMarginDistance = if mfun_swapped and not OnRightPage : lua.mp.LeftMarginDistance () else : lua.mp.RightMarginDistance() fi enddef ; + +vardef LeftEdgeWidth = if mfun_swapped and not OnRightPage : lua.mp.RightEdgeWidth () else : lua.mp.LeftEdgeWidth () fi enddef ; +vardef RightEdgeWidth = if mfun_swapped and not OnRightPage : lua.mp.LeftEdgeWidth () else : lua.mp.RightEdgeWidth () fi enddef ; +vardef LeftEdgeDistance = if mfun_swapped and not OnRightPage : lua.mp.RightEdgeDistance () else : lua.mp.LeftEdgeDistance () fi enddef ; +vardef RightEdgeDistance = if mfun_swapped and not OnRightPage : lua.mp.LeftEdgeDistance () else : lua.mp.RightEdgeDistance () fi enddef ; + +vardef BackSpace = if mfun_swapped and not OnRightPage : PaperWidth - MakeupWidth - fi lua.mp.BackSpace() enddef ; +vardef CutSpace = if mfun_swapped and not OnRightPage : PaperWidth - MakeupWidth - fi lua.mp.CutSpace () enddef ; + +% better use: + +vardef OuterMarginWidth = if not OnRightPage : lua.mp.LeftMarginWidth () else : lua.mp.RightMarginWidth () fi enddef ; +vardef InnerMarginWidth = if not OnRightPage : lua.mp.RightMarginWidth () else : lua.mp.LeftMarginWidth () fi enddef ; +vardef OuterMarginDistance = if not OnRightPage : lua.mp.LeftMarginDistance () else : lua.mp.RightMarginDistance() fi enddef ; +vardef InnerMarginDistance = if not OnRightPage : lua.mp.RightMarginDistance() else : lua.mp.leftMarginDistance () fi enddef ; + +vardef OuterEdgeWidth = if not OnRightPage : lua.mp.LeftEdgeWidth () else : lua.mp.RightEdgeWidth () fi enddef ; +vardef InnerEdgeWidth = if not OnRightPage : lua.mp.RightEdgeWidth () else : lua.mp.LeftEdgeWidth () fi enddef ; +vardef OuterEdgeDistance = if not OnRightPage : lua.mp.LeftEdgeDistance () else : lua.mp.RightEdgeDistance () fi enddef ; +vardef InnerEdgeDistance = if not OnRightPage : lua.mp.RightEdgeDistance () else : lua.mp.leftEdgeDistance () fi enddef ; + +vardef OuterSpaceWidth = if not OnRightPage : lua.mp.BackSpace () else : lua.mp.CutSpace () fi enddef ; +vardef InnerSpaceWidth = if not OnRightPage : lua.mp.CutSpace () else : lua.mp.BackSpace () fi enddef ; + +% vardef CurrentLayout = lua.mp.CurrentLayout () enddef ; + +vardef OverlayWidth = lua.mp.OverlayWidth () enddef ; +vardef OverlayHeight = lua.mp.OverlayHeight () enddef ; +vardef OverlayDepth = lua.mp.OverlayDepth () enddef ; +vardef OverlayLineWidth = lua.mp.OverlayLineWidth() enddef ; +vardef OverlayOffset = lua.mp.OverlayOffset () enddef ; + +vardef defaultcolormodel = lua.mp.defaultcolormodel() enddef ; + +% def OverlayLineColor = lua.mp.OverlayLineColor() enddef ; +% def OverlayColor = lua.mp.OverlayColor () enddef ; + +% Next we implement the the page area model. First some constants. + +LeftEdge := -4 ; Top := -40 ; +LeftEdgeSeparator := -3 ; TopSeparator := -30 ; +LeftMargin := -2 ; Header := -20 ; +LeftMarginSeparator := -1 ; HeaderSeparator := -10 ; +Text := 0 ; Text := 0 ; +RightMarginSeparator := +1 ; FooterSeparator := +10 ; +RightMargin := +2 ; Footer := +20 ; +RightEdgeSeparator := +3 ; BottomSeparator := +30 ; +RightEdge := +4 ; Bottom := +40 ; + +% Margin := LeftMargin ; % obsolete +% Edge := LeftEdge ; % obsolete +% InnerMargin := RightMargin ; % obsolete +% InnerEdge := RightEdge ; % obsolete +% OuterMargin := LeftMargin ; % obsolete +% OuterEdge := LeftEdge ; % obsolete + +numeric HorPos ; HorPos := 0 ; +numeric VerPos ; VerPos := 0 ; + +% We used to initialize these variables each (sub)run but at some point MP +% became too slow for this. See later. + +% path Area[][] ; +% pair Location[][] ; +% path Field[][] ; +% +% numeric Hstep[] ; +% numeric Hsize[] ; +% numeric Vstep[] ; +% numeric Vsize[] ; +% +% for VerPos=Top step 10 until Bottom: +% for HorPos=LeftEdge step 1 until RightEdge: +% Area[HorPos][VerPos] := origin--cycle ; +% Area[VerPos][HorPos] := Area[HorPos][VerPos] ; +% Location[HorPos][VerPos] := origin ; +% Location[VerPos][HorPos] := Location[HorPos][VerPos] ; +% Field[HorPos][VerPos] := origin--cycle ; +% Field[VerPos][HorPos] := Field[HorPos][VerPos] ; +% endfor ; +% endfor ; +% +% +% def SetPageAreas = +% +% numeric Vsize[], Hsize[], Vstep[], Hstep[] ; +% +% Vsize[Top] = TopHeight ; +% Vsize[TopSeparator] = TopDistance ; +% Vsize[Header] = HeaderHeight ; +% Vsize[HeaderSeparator] = HeaderDistance ; +% Vsize[Text] = TextHeight ; +% Vsize[FooterSeparator] = FooterDistance ; +% Vsize[Footer] = FooterHeight ; +% Vsize[BottomSeparator] = BottomDistance ; +% Vsize[Bottom] = BottomHeight ; +% +% Vstep[Top] = Vstep[TopSeparator] +Vsize[TopSeparator] ; +% Vstep[TopSeparator] = PaperHeight-TopSpace ; +% Vstep[Header] = Vstep[TopSeparator] -Vsize[Header] ; +% Vstep[HeaderSeparator] = Vstep[Header] -Vsize[HeaderSeparator] ; +% Vstep[Text] = Vstep[HeaderSeparator]-Vsize[Text] ; +% Vstep[FooterSeparator] = Vstep[Text] -Vsize[FooterSeparator] ; +% Vstep[Footer] = Vstep[FooterSeparator]-Vsize[Footer] ; +% Vstep[BottomSeparator] = Vstep[Footer] -Vsize[BottomSeparator] ; +% Vstep[Bottom] = Vstep[BottomSeparator]-Vsize[Bottom] ; +% +% Hsize[LeftEdge] = LeftEdgeWidth ; +% Hsize[LeftEdgeSeparator] = LeftEdgeDistance ; +% Hsize[LeftMargin] = LeftMarginWidth ; +% Hsize[LeftMarginSeparator] = LeftMarginDistance ; +% Hsize[Text] = MakeupWidth ; +% Hsize[RightMarginSeparator] = RightMarginDistance ; +% Hsize[RightMargin] = RightMarginWidth ; +% Hsize[RightEdgeSeparator] = RightEdgeDistance ; +% Hsize[RightEdge] = RightEdgeWidth ; +% +% Hstep[LeftEdge] = Hstep[LeftEdgeSeparator] -Hsize[LeftEdge] ; +% Hstep[LeftEdgeSeparator] = Hstep[LeftMargin] -Hsize[LeftEdgeSeparator] ; +% Hstep[LeftMargin] = Hstep[LeftMarginSeparator] -Hsize[LeftMargin] ; +% Hstep[LeftMarginSeparator] = Hstep[Text] -Hsize[LeftMarginSeparator] ; +% Hstep[Text] = BackSpace ; +% Hstep[RightMarginSeparator] = Hstep[Text] +Hsize[Text] ; +% Hstep[RightMargin] = Hstep[RightMarginSeparator]+Hsize[RightMarginSeparator] ; +% Hstep[RightEdgeSeparator] = Hstep[RightMargin] +Hsize[RightMargin] ; +% Hstep[RightEdge] = Hstep[RightEdgeSeparator] +Hsize[RightEdgeSeparator] ; +% +% for VerPos=Top step 10 until Bottom: +% for HorPos=LeftEdge step 1 until RightEdge: +% Area[HorPos][VerPos] := unitsquare xscaled Hsize[HorPos] yscaled Vsize[VerPos] ; +% Area[VerPos][HorPos] := Area[HorPos][VerPos] ; +% Location[HorPos][VerPos] := (Hstep[HorPos],Vstep[VerPos]) ; +% Location[VerPos][HorPos] := Location[HorPos][VerPos] ; +% Field[HorPos][VerPos] := Area[HorPos][VerPos] shifted Location[HorPos][VerPos] ; +% Field[VerPos][HorPos] := Field[HorPos][VerPos] ; +% endfor ; +% endfor ; +% +% Page := unitsquare xscaled PaperWidth yscaled PaperHeight ; +% +% enddef ; +% +% def BoundPageAreas = +% % pickup pencircle scaled 0pt ; +% bboxmargin := 0 ; setbounds currentpicture to Page ; +% enddef ; +% +% def StartPage = +% begingroup ; +% if PageStateAvailable : +% LoadPageState ; +% SwapPageState ; +% fi ; +% SetPageAreas ; +% BoundPageAreas ; +% enddef ; +% +% def StopPage = +% BoundPageAreas ; +% endgroup ; +% enddef ; + +% Because metapost > 1.50 has dynamic memory management and is less +% efficient than before we now delay calculations ... (on a document +% with 150 pages the time spent in mp was close to 5 seconds which was +% only due to initialising the page related areas, something that was +% hardly noticeable before. At least now we're back to half a second +% for such a case. + +def SetPageVsize = + numeric Vsize[] ; + Vsize[Top] = TopHeight ; + Vsize[TopSeparator] = TopDistance ; + Vsize[Header] = HeaderHeight ; + Vsize[HeaderSeparator] = HeaderDistance ; + Vsize[Text] = TextHeight ; + Vsize[FooterSeparator] = FooterDistance ; + Vsize[Footer] = FooterHeight ; + Vsize[BottomSeparator] = BottomDistance ; + Vsize[Bottom] = BottomHeight ; +enddef ; + +def SetPageHsize = + numeric Hsize[] ; + Hsize[LeftEdge] = LeftEdgeWidth ; + Hsize[LeftEdgeSeparator] = LeftEdgeDistance ; + Hsize[LeftMargin] = LeftMarginWidth ; + Hsize[LeftMarginSeparator] = LeftMarginDistance ; + Hsize[Text] = MakeupWidth ; + Hsize[RightMarginSeparator] = RightMarginDistance ; + Hsize[RightMargin] = RightMarginWidth ; + Hsize[RightEdgeSeparator] = RightEdgeDistance ; + Hsize[RightEdge] = RightEdgeWidth ; +enddef ; + +def SetPageVstep = + numeric Vstep[] ; + Vstep[Top] = Vstep[TopSeparator] +Vsize[TopSeparator] ; + Vstep[TopSeparator] = PaperHeight-TopSpace ; + Vstep[Header] = Vstep[TopSeparator] -Vsize[Header] ; + Vstep[HeaderSeparator] = Vstep[Header] -Vsize[HeaderSeparator] ; + Vstep[Text] = Vstep[HeaderSeparator]-Vsize[Text] ; + Vstep[FooterSeparator] = Vstep[Text] -Vsize[FooterSeparator] ; + Vstep[Footer] = Vstep[FooterSeparator]-Vsize[Footer] ; + Vstep[BottomSeparator] = Vstep[Footer] -Vsize[BottomSeparator] ; + Vstep[Bottom] = Vstep[BottomSeparator]-Vsize[Bottom] ; +enddef ; + +def SetPageHstep = + numeric Hstep[] ; + Hstep[LeftEdge] = Hstep[LeftEdgeSeparator] -Hsize[LeftEdge] ; + Hstep[LeftEdgeSeparator] = Hstep[LeftMargin] -Hsize[LeftEdgeSeparator] ; + Hstep[LeftMargin] = Hstep[LeftMarginSeparator] -Hsize[LeftMargin] ; + Hstep[LeftMarginSeparator] = Hstep[Text] -Hsize[LeftMarginSeparator] ; + Hstep[Text] = BackSpace ; + Hstep[RightMarginSeparator] = Hstep[Text] +Hsize[Text] ; + Hstep[RightMargin] = Hstep[RightMarginSeparator]+Hsize[RightMarginSeparator] ; + Hstep[RightEdgeSeparator] = Hstep[RightMargin] +Hsize[RightMargin] ; + Hstep[RightEdge] = Hstep[RightEdgeSeparator] +Hsize[RightEdgeSeparator] ; +enddef ; + +def SetPageArea = + path Area[][] ; + for VerPos=Top step 10 until Bottom: + for HorPos=LeftEdge step 1 until RightEdge: + Area[HorPos][VerPos] := unitsquare xscaled Hsize[HorPos] yscaled Vsize[VerPos] ; + Area[VerPos][HorPos] := Area[HorPos][VerPos] ; + endfor ; + endfor ; +enddef ; + +def SetPageLocation = + pair Location[][] ; + for VerPos=Top step 10 until Bottom: + for HorPos=LeftEdge step 1 until RightEdge: + Location[HorPos][VerPos] := (Hstep[HorPos],Vstep[VerPos]) ; + Location[VerPos][HorPos] := Location[HorPos][VerPos] ; + endfor ; + endfor ; +enddef ; + +def SetPageField = + path Field[][] ; + for VerPos=Top step 10 until Bottom: + for HorPos=LeftEdge step 1 until RightEdge: + Field[HorPos][VerPos] := unitsquare xscaled Hsize[HorPos] yscaled Vsize[VerPos] shifted (Hstep[HorPos],Vstep[VerPos]) ; + Field[VerPos][HorPos] := Field[HorPos][VerPos] ; + endfor ; + endfor ; +enddef ; + +def mfun_page_Area = hide(SetPageArea ;) Area enddef ; +def mfun_page_Location = hide(SetPageLocation ;) Location enddef ; +def mfun_page_Field = hide(SetPageField ;) Field enddef ; +def mfun_page_Vsize = hide(SetPageVsize ;) Vsize enddef ; +def mfun_page_Hsize = hide(SetPageHsize ;) Hsize enddef ; +def mfun_page_Vstep = hide(SetPageVstep ;) Vstep enddef ; +def mfun_page_Hstep = hide(SetPageHstep ;) Hstep enddef ; + +def SetAreaVariables = + let Area = mfun_page_Area ; + let Location = mfun_page_Location ; + let Field = mfun_page_Field ; + let Vsize = mfun_page_Vsize ; + let Hsize = mfun_page_Hsize ; + let Vstep = mfun_page_Vstep ; + let Hstep = mfun_page_Hstep ; +enddef ; + +% we should make Page no path .. from now on don't assume this .. for a while we keek it + +vardef FrontPageWidth = PaperWidth enddef ; +vardef BackPageWidth = PaperWidth enddef ; +vardef CoverWidth = 2 * PaperWidth + SpineWidth enddef ; +vardef CoverHeight = PaperHeight enddef ; + +vardef FrontPageHeight = PaperHeight enddef ; +vardef BackPageHeight = PaperHeight enddef ; +vardef SpineHeight = PaperHeight enddef ; + +def SetPagePage = path Page ; Page := unitsquare xscaled PaperWidth yscaled PaperHeight ; enddef ; +def SetPageCoverPage = path CoverPage ; CoverPage := unitsquare xscaled CoverWidth yscaled CoverHeight ; enddef ; +def SetPageSpine = path Spine ; Spine := unitsquare xscaled SpineWidth yscaled CoverHeight shifted (BackPageWidth,0) ; enddef ; +def SetPageBackPage = path BackPage ; BackPage := unitsquare xscaled BackPageWidth yscaled CoverHeight ; enddef ; +def SetPageFrontPage = path FrontPage ; FrontPage := unitsquare xscaled FrontPageWidth yscaled CoverHeight shifted (BackPageWidth+SpineWidth,0) ; enddef ; + +def mfun_page_Page = hide(SetPagePage ;) Page enddef ; +def mfun_page_CoverPage = hide(SetPageCoverPage;) CoverPage enddef ; +def mfun_page_Spine = hide(SetPageSpine ;) Spine enddef ; +def mfun_page_BackPage = hide(SetPageBackPage ;) BackPage enddef ; +def mfun_page_FrontPage = hide(SetPageFrontPage;) FrontPage enddef ; + +def SetPageVariables = + SetAreaVariables ; + % + let Page = mfun_page_Page ; + let CoverPage = mfun_page_CoverPage ; + let Spine = mfun_page_Spine ; + let BackPage = mfun_page_BackPage ; + let FrontPage = mfun_page_FrontPage ; +enddef ; + +SetPageVariables ; + +let SetPageAreas = SetPageVariables ; % compatiblity + +def BoundPageAreas = + % pickup pencircle scaled 0pt ; + bboxmargin := 0 ; setbounds currentpicture to Page ; +enddef ; + +def StartPage = + begingroup ; + if mfun_first_run : + if PageStateAvailable : + LoadPageState ; + SwapPageState ; + fi ; + SetPageVariables ; + fi ; + BoundPageAreas ; +enddef ; + +def StopPage = + BoundPageAreas ; + endgroup ; +enddef ; + +% cover pages + +def BoundCoverAreas = + % todo: add cropmarks + bboxmargin := 0 ; setbounds currentpicture to CoverPage enlarged PaperBleed ; +enddef ; + +let SetCoverAreas = SetPageVariables ; % compatiblity + +def StartCover = + begingroup ; + if mfun_first_run : + if PageStateAvailable : + LoadPageState ; + % SwapPageState ; + fi ; + SetPageVariables ; % was SetPageAreas ; + SetCoverAreas ; + fi ; + BoundCoverAreas ; +enddef ; + +def StopCover = + BoundCoverAreas ; + endgroup ; +enddef ; + +% overlays: + +def OverlayBox = + (unitsquare xyscaled (OverlayWidth,OverlayHeight)) +enddef ; + +% handy + +def innerenlarged = + hide(LoadPageState) + if OnRightPage : leftenlarged else : rightenlarged fi +enddef ; + +def outerenlarged = + hide(LoadPageState) + if OnRightPage : rightenlarged else : leftenlarged fi +enddef ; + +% obsolete + +def llEnlarged (expr p,d) = (llcorner p shifted (-d,-d)) enddef ; +def lrEnlarged (expr p,d) = (lrcorner p shifted (+d,-d)) enddef ; +def urEnlarged (expr p,d) = (urcorner p shifted (+d,+d)) enddef ; +def ulEnlarged (expr p,d) = (ulcorner p shifted (-d,+d)) enddef ; + +def Enlarged (expr p, d) = + (llEnlarged (p,d) -- + lrEnlarged (p,d) -- + urEnlarged (p,d) -- + ulEnlarged (p,d) -- cycle) +enddef ; diff --git a/metapost/context/base/mpiv/mp-shap.mpiv b/metapost/context/base/mpiv/mp-shap.mpiv new file mode 100644 index 000000000..713656510 --- /dev/null +++ b/metapost/context/base/mpiv/mp-shap.mpiv @@ -0,0 +1,218 @@ +%D \module +%D [ file=mp-shap.mpiv, +%D version=2000.05.31, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=shapes, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +if known context_shap : endinput ; fi ; + +boolean context_shap ; context_shap := true ; + +path predefined_shapes[] ; + +def start_predefined_shape_definition = + + begingroup ; + + save xradius, yradius, xxradius, yyradius ; + save ll, lr, ur, ul, llx, lly, lrx, lry, urx, ury, ulx, uly, llxx, llyy, lrxx, lryy, urxx, uryy, ulxx, ulyy, lc, rc, tc, bc ; + + numeric xradius, yradius, xxradius, yyradius ; + pair ll, lr, ur, ul, llx, lly, lrx, lry, urx, ury, ulx, uly, llxx, llyy, lrxx, lryy, urxx, uryy, ulxx, ulyy, lc, rc, tc, bc ; + + xradius := .15 ; + yradius := .15 ; + xxradius := .10 ; + yyradius := .10 ; + + ll := llcorner (unitsquare shifted (-.5,-.5)) ; + lr := lrcorner (unitsquare shifted (-.5,-.5)) ; + ur := urcorner (unitsquare shifted (-.5,-.5)) ; + ul := ulcorner (unitsquare shifted (-.5,-.5)) ; + + llx := ll shifted (xradius,0) ; + lly := ll shifted (0,yradius) ; + + lrx := lr shifted (-xradius,0) ; + lry := lr shifted (0,yradius) ; + + urx := ur shifted (-xradius,0) ; + ury := ur shifted (0,-yradius) ; + + ulx := ul shifted (xradius,0) ; + uly := ul shifted (0,-yradius) ; + + llxx := ll shifted (xxradius,0) ; + llyy := ll shifted (0,yyradius) ; + + lrxx := lr shifted (-xxradius,0) ; + lryy := lr shifted (0,yyradius) ; + + urxx := ur shifted (-xxradius,0) ; + uryy := ur shifted (0,-yyradius) ; + + ulxx := ul shifted (xxradius,0) ; + ulyy := ul shifted (0,-yyradius) ; + + lc := ll shifted (0,.5) ; + rc := lr shifted (0,.5) ; + tc := ul shifted (.5,0) ; + bc := ll shifted (.5,0) ; + +enddef ; + +def stop_predefined_shape_definition = + + endgroup ; + +enddef ; + +start_predefined_shape_definition ; + + predefined_shapes[ 0] := (origin--cycle) ; + predefined_shapes[ 5] := (llx--lrx{right}...rc...{left}urx--ulx{left}...lc...{right}cycle) ; + predefined_shapes[ 6] := (ll--lrx{right}...rc...{left}urx--ul--cycle) ; + predefined_shapes[ 7] := (ll--lrx{right}...rc...{left}urx--ul--cycle) rotatedaround(origin,180) ; + predefined_shapes[ 8] := (lr--ury{up}...tc...{down}uly--ll--cycle) ; + predefined_shapes[ 9] := (lr--ury{up}...tc...{down}uly--ll--cycle) rotatedaround(origin,180) ; + predefined_shapes[10] := (ll--lr--ur--ul--ll--ur--ul--ll--cycle) ; + predefined_shapes[11] := (ll--lr--ur--ul--ll--lr--ul--ll--cycle) ; + predefined_shapes[12] := (ll--lrx--ur--ulx--cycle) ; + predefined_shapes[13] := (llx--lr--urx--ul--cycle) ; + predefined_shapes[14] := (lly--bc--lry--ury--tc--uly--cycle) ; + predefined_shapes[15] := (llx--lrx--rc--urx--ulx--lc--cycle) ; + predefined_shapes[16] := (ll--lrx--rc--urx--ul--cycle) ; + predefined_shapes[17] := (ll--lrx--rc--urx--ul--cycle) rotatedaround(origin,180) ; + predefined_shapes[18] := (lr--ury--tc--uly--ll--cycle) ; + predefined_shapes[19] := (lr--ury--tc--uly--ll--cycle) rotatedaround(origin,180) ; + predefined_shapes[20] := (ll--lr--ur--ul--ll--llxx--ulxx--ul--ll--lr--ur--urxx--lrxx--cycle) ; + predefined_shapes[21] := (ul--ll--lr--ur--ul--ulyy--uryy--ur--ul--ll--lr--lryy--llyy--cycle) ; + predefined_shapes[22] := (ll--lrx--lry--ur--ulx--uly--cycle) ; + predefined_shapes[23] := (llx--lr--ury--urx--ul--lly--cycle) ; + predefined_shapes[24] := (ll--lr--ur--ul--cycle) ; + predefined_shapes[25] := (llx--lrx--lry--ury--urx--ulx--uly--lly--cycle) ; + predefined_shapes[26] := (ll--lrx--lry--ur--ul--cycle) ; + predefined_shapes[27] := (ll--lr--ury--urx--ul--cycle) rotatedaround(origin,180) ; + predefined_shapes[28] := (ll--lr--ury--urx--ul--cycle) ; + predefined_shapes[29] := (ll--lrx--lry--ur--ul--cycle) rotatedaround(origin,180) ; + predefined_shapes[30] := (bc{right}...{up}rc...tc{left}...{down}lc...{right}bc & bc--tc & tc{left}..{down}lc & lc--rc & rc{up}..tc{left}...{down}lc...{right}bc & cycle) rotated 45; + predefined_shapes[31] := (bc{right}...{up}rc...tc{left}...{down}lc...{right}bc & bc--tc & tc{left}..{down}lc & lc--rc & rc{up}..tc{left}...{down}lc...{right}bc & cycle) ; + predefined_shapes[32] := (ll{right}...{right}lry--ur--ul--ll--cycle) ; + predefined_shapes[33] := (ll{right}...{right}lry--ur--ul--ll--cycle--ul--ulx--ulx shifted(0,yyradius)--ur shifted(yyradius,yyradius)--lry shifted(yyradius,yyradius)--lry shifted(0,yyradius)--ur--ul--cycle ) ; + predefined_shapes[34] := (uly..tc..ury & ury..tc shifted (0,-2yradius)..uly & uly--lly & lly..bc..lry & lry--ury & ury..tc shifted (0,-2yradius)..uly & cycle ) ; + predefined_shapes[35] := (bc{right}...rc{up}...tc{left}...lc{down}...cycle) ; + predefined_shapes[36] := (ul--tc{right}..rc{down}..{left}bc--ll & ll..(xpart llx, ypart lc)..ul & cycle) ; + predefined_shapes[37] := (ul--tc{right}..rc{down}..{left}bc--ll & ll..(xpart llx, ypart lc)..ul & cycle) rotatedaround(origin,180) ; + predefined_shapes[38] := (ll--lc{up}..tc{right}..{down}rc--lr & lr..(xpart bc, ypart lly)..ll & cycle) ; + predefined_shapes[39] := (ll--lc{up}..tc{right}..{down}rc--lr & lr..(xpart bc, ypart lly)..ll & cycle) rotatedaround(origin,180) ; + predefined_shapes[40] := (ll--lr--ur--ul--ll--ur--ul--ll--lr--ul--ll--cycle) ; + predefined_shapes[41] := (ll--lr--ur--ul--ll--lr--rc--lc--ll--bc--tc--ul--ll & cycle) ; + predefined_shapes[42] := (ll--lr--origin shifted (+epsilon,0)--ur--ul--origin shifted (-epsilon,0)--cycle) ; + predefined_shapes[43] := (ll--ul--origin shifted (0,+epsilon)--ur--lr--origin shifted (0,-epsilon)--cycle) ; + predefined_shapes[45] := (bc--rc--tc--lc--cycle) ; + predefined_shapes[46] := (ll--ul--rc--cycle) ; + predefined_shapes[47] := (ll--ul--rc--cycle) rotatedaround(origin,180) ; + predefined_shapes[48] := (ul--ur--bc--cycle) rotatedaround(origin,180) ; + predefined_shapes[49] := (ul--ur--bc--cycle) ; + predefined_shapes[56] := (ll--lry--ury--ul--cycle) ; + predefined_shapes[57] := (ll--lry--ury--ul--cycle) rotatedaround(origin,180) ; + predefined_shapes[58] := (ll--ulx--urx--lr--cycle) ; + predefined_shapes[59] := (ll--ulx--urx--lr--cycle) rotatedaround(origin,180); + predefined_shapes[66] := (rc--origin shifted ( epsilon,0) --cycle & rc--origin--cycle ) ; + predefined_shapes[67] := (lc--origin shifted (-epsilon,0) --cycle & lc--origin--cycle ) ; + predefined_shapes[68] := (tc--origin shifted (0, epsilon) --cycle & tc--origin--cycle ) ; + predefined_shapes[69] := (bc--origin shifted (0,-epsilon) --cycle & bc--origin--cycle ) ; + predefined_shapes[75] := (lly--lry--ury--uly--cycle) rotatedaround(origin,180) ; + predefined_shapes[76] := (ll--lr--ur--uly--cycle) rotatedaround(origin,180) ; + predefined_shapes[77] := (ll--lr--ury--ul--cycle) rotatedaround(origin,180) ; + predefined_shapes[78] := (lly--lr--ur--ul--cycle) rotatedaround(origin,180) ; + predefined_shapes[79] := (ll--lry--ur--ul--cycle) rotatedaround(origin,180) ; + + numeric predefined_shapes_xradius ; predefined_shapes_xradius := xradius ; + numeric predefined_shapes_yradius ; predefined_shapes_yradius := yradius ; + numeric predefined_shapes_xxradius ; predefined_shapes_xxradius := xxradius ; + numeric predefined_shapes_yyradius ; predefined_shapes_yyradius := yyradius ; + +stop_predefined_shape_definition ; + +vardef some_shape_path (expr type) = + if known predefined_shapes[type] : predefined_shapes[type] else : predefined_shapes[0] fi +enddef ; + +def some_shape (expr shape_type, shape_width, shape_height, shape_linewidth, shape_linecolor, shape_fillcolor) = + begingroup ; + save p ; path p ; + p := some_shape_path (shape_type) xscaled shape_width yscaled shape_height ; + pickup pencircle scaled shape_linewidth ; + fill p withcolor shape_fillcolor ; + draw p withcolor shape_linecolor ; + endgroup ; +enddef ; + +vardef drawpredefinedshape (expr t, p, lw, lc, fc) = + save pp ; + if t>1 : % normal shape + path pp ; + pp := some_shape_path(t) xyscaled(bbwidth(p), bbheight(p)) shifted center p ; + fill pp withcolor fc ; + draw pp withpen pencircle scaled lw withcolor lc ; + elseif t=1 : % background only + path pp ; + pp := fullsquare xyscaled(bbwidth(p), bbheight(p)) shifted center p ; + fill pp withcolor fc ; + else : % dimensions only + picture pp ; pp := nullpicture ; + setbounds pp to fullsquare xyscaled(bbwidth(p), bbheight(p)) shifted center p ; + draw pp ; + fi ; +enddef ; + +vardef drawpredefinedline (expr t, p, lw, lc) = + if (t>0) and (length(p)>1) : + saveoptions ; + drawoptions(withpen pencircle scaled lw withcolor lc) ; + draw p ; + if t = 1 : + draw arrowheadonpath(p,1) ; + elseif t = 2 : + draw arrowheadonpath(reverse p,1) ; + elseif t = 3 : + for $ = p,reverse p : + draw arrowheadonpath($,1) ; + endfor ; + elseif t = 11 : + draw arrowheadonpath(p,1/2) ; + elseif t = 12 : + draw arrowheadonpath(reverse p,1/2) ; + elseif t = 13 : + for $=p,reverse p : + draw arrowheadonpath($,1) ; + endfor ; + for $=p,reverse p : + draw arrowheadonpath($,3/4) ; + endfor ; + elseif t = 21 : + for $=1/5,1/2,4/5 : + draw arrowheadonpath(p,$) ; + endfor ; + elseif t = 22 : + for $=1/5,1/2,4/5 : + draw arrowheadonpath(reverse p,$) ; + endfor ; + elseif t = 23 : + for $=p,reverse p : + draw arrowheadonpath($,1/4) ; + endfor ; + fi ; + fi ; +enddef ; + +let drawshape = drawpredefinedshape ; +let drawline = drawpredefinedline ; diff --git a/metapost/context/base/mpiv/mp-step.mpiv b/metapost/context/base/mpiv/mp-step.mpiv new file mode 100644 index 000000000..f7a7ba5de --- /dev/null +++ b/metapost/context/base/mpiv/mp-step.mpiv @@ -0,0 +1,376 @@ +%D \module +%D [ file=mp-cell.mpiv, % mp-step.mpiv, +%D version=2010.10.07, % 2001.05.22, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=steps, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +% step prefixes .. no save needed + +if known context_cell : endinput ; fi ; + +boolean context_cell ; context_cell := true ; + +def initialize_step_variables = + save + text_fill_color, text_line_color, text_line_width, text_offset, + cell_fill_color, cell_line_color, cell_line_width, cell_offset, + line_line_color, line_line_width, line_alternative, + line_distance, cell_distance_y, cell_distance_x, + nofcells, chart_vertical ; + + color text_line_color ; text_line_color := red ; + color cell_line_color ; cell_line_color := blue ; + color line_line_color ; line_line_color := green ; + + color text_fill_color ; text_fill_color := white ; + color cell_fill_color ; cell_fill_color := white ; + + numeric text_line_width ; text_line_width := 2pt ; + numeric cell_line_width ; cell_line_width := 2pt ; + numeric line_line_width ; line_line_width := 2pt ; + + numeric text_offset ; text_offset := 4pt ; + numeric cell_offset ; cell_offset := 4pt ; + + numeric line_distance ; line_distance := 10pt ; % between line and text + numeric line_offset ; line_offset := 4pt ; % between center and start of line + numeric line_height ; line_height := 20pt ; + + numeric cell_distance_y ; cell_distance_y := 20pt ; + numeric cell_distance_x ; cell_distance_x := 20pt ; + + numeric text_distance_set ; text_distance_set := 4pt ; + + boolean chart_vertical ; chart_vertical := false ; + + numeric nofcells ; nofcells := 0 ; + +enddef ; + +def step_cells (expr t, b) = + nofcells := nofcells + 1 ; + cells_t[nofcells] := textext.d(t) ; + cells_b[nofcells] := textext.d(b) ; + texts_t[nofcells] := nullpicture ; + texts_m[nofcells] := nullpicture ; + texts_b[nofcells] := nullpicture ; +enddef ; + +def step_texts (expr t, b) = + texts_t[nofcells] := textext.d(t) ; + texts_m[nofcells] := textext.d(m) ; + texts_b[nofcells] := textext.d(b) ; +enddef ; + +def step_begin_cell = + nofcells := nofcells + 1 ; + cells_t[nofcells] := nullpicture ; + cells_b[nofcells] := nullpicture ; + texts_t[nofcells] := nullpicture ; + texts_m[nofcells] := nullpicture ; + texts_b[nofcells] := nullpicture ; +enddef ; + +def step_end_cell = +enddef ; + +def step_cell_top (expr t) = cells_t[nofcells] := textext.d(t) ; enddef ; +def step_cell_bot (expr b) = cells_b[nofcells] := textext.d(b) ; enddef ; +def step_text_top (expr t) = texts_t[nofcells] := textext.d(t) ; enddef ; +def step_text_mid (expr m) = texts_m[nofcells] := textext.d(m) ; enddef ; +def step_text_bot (expr b) = texts_b[nofcells] := textext.d(b) ; enddef ; + +def step_begin_chart = + begingroup ; + initialize_step_variables ; + save nofcells ; numeric nofcells ; nofcells := 0 ; + save cells_t, cells_m, cells_b ; picture cells_t[], cells_m[], cells_b[] ; + save texts_t, texts_m, texts_b ; picture texts_t[], texts_m[], texts_b[] ; +enddef ; + +def step_end_chart = + % we could combine some loops but this is cleaner + save dx, delta ; numeric dx, delta ; + save p ; path p ; + save one_row_only ; boolean one_row_only ; + save cell_t, next_t, text_t ; picture cell_t, next_t, text_t ; + save cell_m, next_m, text_m ; picture cell_m, next_m, text_m ; + save cell_b, next_b, text_b ; picture cell_b, next_b, text_b ; + save height_t, width_t, max_height_t, max_width_t ; numeric height_t, width_t, max_height_t, max_width_t ; + save height_m, width_m, max_height_m, max_width_m ; numeric height_m, width_m, max_height_m, max_width_m ; + save height_b, width_b, max_height_b, max_width_b ; numeric height_b, width_b, max_height_b, max_width_b ; + % check rows + one_row_only := true ; + for i=1 upto nofcells : + if bbwidth(cells_b[i]) > 0 : + one_row_only := false ; + fi ; + endfor ; + % swap and rotate + if chart_vertical : + if one_row_only : + % deal with mid_texts + max_width_t := max_width_m := max_width_b := 0 ; + for i=1 upto nofcells : + width_t := bbwidth(texts_t[i]) ; + width_m := bbwidth(texts_m[i]) ; + width_b := bbwidth(texts_b[i]) ; + if width_t > max_width_t : max_width_t := width_t fi ; + if width_m > max_width_m : max_width_m := width_m fi ; + if width_b > max_width_b : max_width_b := width_b fi ; + endfor ; + if max_width_m > 0 : + for i=1 upto nofcells : + text_t := texts_t[i] ; width_t := bbwidth(text_t) ; + text_m := texts_m[i] ; width_m := bbwidth(text_m) ; + text_b := texts_b[i] ; width_b := bbwidth(text_b) ; + if width_t < max_width_t : + setbounds text_t to boundingbox text_t leftenlarged (max_width_t - width_t) ; + fi ; + if width_m < max_width_m : + setbounds text_m to boundingbox text_m leftenlarged ((max_width_m - width_m)/2) ; + setbounds text_m to boundingbox text_m rightenlarged ((max_width_m - width_m)/2) ; + fi ; + if width_b < max_width_b : + setbounds text_b to boundingbox text_b rightenlarged (max_width_b - width_b) ; + fi ; + text_t := text_t shifted (- xpart llcorner text_t, 0) ; + text_m := text_m shifted (- xpart llcorner text_m, 0) ; + text_b := text_b shifted (- xpart llcorner text_b, 0) ; + texts_t[i] := image ( + draw text_t ; + draw text_m shifted (max_width_t + text_distance_set,0) ; + draw text_b shifted (max_width_t + max_width_m + 2*text_distance_set,0) ; + ) rotated 90 ; + texts_m[i] := texts_b[i] := nullpicture ; + cells_t[i] := cells_t[i] rotated 90 ; + endfor ; + else : + for i=1 upto nofcells : + cells_t[i] := cells_t[i] rotated 90 ; + texts_t[i] := texts_t[i] rotated 90 ; + texts_b[i] := texts_b[i] rotated 90 ; + endfor ; + fi ; + else : + for i=1 upto nofcells : + cell_t := cells_t[i] ; + cell_b := cells_b[i] ; + cells_t[i] := cell_b rotated 90 ; + cells_b[i] := cell_t rotated 90 ; + text_t := texts_t[i] ; + text_b := texts_b[i] ; + texts_t[i] := text_b rotated 90 ; + texts_b[i] := text_t rotated 90 ; + endfor ; + fi ; + fi ; + % align horizontal + for i=1 upto nofcells : + cell_t := cells_t[i] ; + cell_b := cells_b[i] ; + width_t := bbwidth(cell_t) ; + width_b := bbwidth(cell_b) ; + if (width_t = 0) and (width_b = 0) : + % skip + elseif (width_t > 0) and (width_t < width_b) : + delta := (width_b-width_t)/2 ; + setbounds cell_t to boundingbox cell_t leftenlarged delta rightenlarged delta ; + cells_t[i] := cell_t ; + elseif (width_b > 0) and (width_t > width_b) : + delta := (width_t-width_b)/2 ; + setbounds cell_b to boundingbox cell_b leftenlarged delta rightenlarged delta ; + cells_b[i] := cell_b ; + fi ; + endfor ; + % analyze vertical + max_height_t := 0 ; + max_height_b := 0 ; + for i=1 upto nofcells : + cell_t := cells_t[i] ; + cell_b := cells_b[i] ; + height_t := bbheight(cell_t) ; + height_b := bbheight(cell_b) ; + if height_t > 0 : + setbounds cell_t to boundingbox cell_t enlarged cell_offset ; + height_t := height_t + 2 * cell_offset ; + cells_t[i] := cell_t ; + fi ; + if height_b > 0 : + setbounds cell_b to boundingbox cell_b enlarged cell_offset ; + height_b := height_b + 2 * cell_offset ; + cells_b[i] := cell_b ; + fi ; + if height_t > max_height_t : + max_height_t := height_t ; + fi + if height_b > max_height_b : + max_height_b := height_b ; + fi ; + endfor ; + % align vertical + for i=1 upto nofcells : + cell_t := cells_t[i] ; + cell_b := cells_b[i] ; + height_t := bbheight(cell_t) ; + height_b := bbheight(cell_b) ; + if height_t > 0 : + delta := (max_height_t-height_t)/2 ; + setbounds cell_t to boundingbox cell_t topenlarged delta bottomenlarged delta ; + fi ; + if height_b > 0 : + delta := (max_height_b-height_b)/2 ; + setbounds cell_b to boundingbox cell_b topenlarged delta bottomenlarged delta ; + fi ; + cells_t[i] := cell_t ; + cells_b[i] := cell_b ; + endfor ; + % position + dx := 0 ; + for i=1 upto nofcells : + cell_t := cells_t[i] ; + cell_b := cells_b[i] ; + cell_t := cell_t shifted -llcorner cell_t ; + cell_b := cell_b shifted -llcorner cell_b ; + cell_t := cell_t shifted (dx, 0) ; + cell_b := cell_b shifted (dx,-cell_distance_y-max_height_b) ; + cells_t[i] := cell_t ; + cells_b[i] := cell_b ; + width_t := bbwidth(cell_t) ; + width_b := bbwidth(cell_b) ; + if width_t > 0 : + dx := dx + cell_distance_x + width_t ; + elseif width_b > 0 : + dx := dx + cell_distance_x + width_b ; + fi ; + endfor ; + % flush + for i=1 upto nofcells : + cell_t := cells_t[i] ; + cell_b := cells_b[i] ; + width_t := bbwidth(cell_t) ; + width_b := bbwidth(cell_b) ; + if width_t > 0 : + fill boundingbox cell_t withcolor cell_fill_color ; + draw boundingbox cell_t withpen pencircle scaled cell_line_width withcolor cell_line_color ; + draw cell_t ; + fi ; + if width_b > 0 : + fill boundingbox cell_b withcolor cell_fill_color ; + draw boundingbox cell_b withpen pencircle scaled cell_line_width withcolor cell_line_color ; + draw cell_b ; + fi ; + endfor ; + % + def midtopboundary expr p = 0.5[ulcorner boundingbox p, urcorner boundingbox p] enddef ; + def midbottomboundary expr p = 0.5[llcorner boundingbox p, lrcorner boundingbox p] enddef ; + % draw top and bottom text boxes + for i=1 upto nofcells-1 : + text_t := texts_t[i] ; + text_b := texts_b[i] ; + if bbwidth(text_t) > 0 : + setbounds text_t to boundingbox text_t enlarged text_offset ; + texts_t[i] := text_t ; + fi ; + if bbwidth(text_b) > 0 : + setbounds text_b to boundingbox text_b enlarged text_offset ; + texts_b[i] := text_b ; + fi ; + endfor ; + % arrows + for i=1 upto nofcells-1 : + cell_t := cells_t[i] ; + cell_b := cells_b[i] ; + next_t := cells_t[i+1] ; + next_b := cells_b[i+1] ; + pair t_a, t_b, t_c, b_a, b_b, b_c ; + t_a := midtopboundary cell_t ; + t_b := midtopboundary next_t ; + t_c := (xpart 0.5[t_a,t_b], ypart t_a+line_height+line_distance) ; + if one_row_only : + b_a := midbottomboundary cell_t ; + b_b := midbottomboundary next_t ; + else : + b_a := midbottomboundary cell_b ; + b_b := midbottomboundary next_b ; + fi ; + b_c := (xpart 0.5[b_a,b_b], ypart b_a-line_height-line_distance) ; + texts_t[i] := thelabel.top(texts_t[i],t_c) ; + texts_b[i] := thelabel.bot(texts_b[i],b_c) ; + endfor ; + % + for i=1 upto nofcells-1 : % todo arrows when empty text + cell_t := cells_t[i] ; + cell_b := cells_b[i] ; + next_t := cells_t[i+1] ; + next_b := cells_b[i+1] ; + text_t := texts_t[i] ; + text_b := texts_b[i] ; + if bbwidth(text_t) > 0 : + if bbwidth(cell_t) > 0 : + drawarrow midtopboundary cell_t + shifted (if i > 1 : line_offset else : 0 fi, cell_line_width) {up} .. + midbottomboundary text_t shifted (0,-line_distance) .. + {down} midtopboundary next_t shifted(if i < nofcells - 1 : -line_offset else : 0 fi,cell_line_width) + withpen pencircle scaled line_line_width + withcolor line_line_color ; + else : + fi ; + fi ; + if bbwidth(text_b) > 0 : + if one_row_only : + cell_b := cell_t ; + next_b := next_t ; + fi ; + if bbwidth(cell_b) > 0 : + drawarrow midbottomboundary cell_b + shifted (if i > 1 : line_offset else : 0 fi, -cell_line_width) {down} .. + midtopboundary text_b shifted (0, line_distance) .. + {up} midbottomboundary next_b shifted (if i < nofcells - 1 : -line_offset else : 0 fi,-cell_line_width) + withpen pencircle scaled line_line_width + withcolor line_line_color ; + else : + fi ; + fi ; + endfor ; + % draw top and bottom text boxes + for i=1 upto nofcells-1 : + text_t := texts_t[i] ; + text_b := texts_b[i] ; + if bbwidth(text_t) > 0 : + fill boundingbox text_t withcolor text_fill_color ; + draw boundingbox text_t withpen pencircle scaled text_line_width withcolor text_line_color ; + draw text_t ; + fi ; + if bbwidth(text_b) > 0 : + fill boundingbox text_b withcolor text_fill_color ; + draw boundingbox text_b withpen pencircle scaled text_line_width withcolor text_line_color ; + draw text_b ; + fi ; + endfor ; + if chart_vertical : + % rotate back + currentpicture := currentpicture rotated -90 ; + fi ; + endgroup ; +enddef ; + +% start_begin_step ; +% step_cells ("\strut test 0", "\strut test 0") ; +% step_cells ("\strut test 1", "\vbox{\hsize3cm \strut oeps 1\crlf oeps 1}") ; +% step_texts ("\strut 1", "\strut 1") ; +% step_cells ("\strut test 2", "\strut oeps 2 oeps 2") ; +% step_cells ("\strut test X", "\strut test X") ; +% step_texts ("\strut 2", "\strut 2") ; +% step_cells ("\strut test 3", "\strut oeps 3 oeps 3") ; +% step_texts ("\strut 3", "\strut 3") ; +% step_cells ("\strut test 4", "\strut oeps 4 oeps 4") ; +% step_texts ("\strut 4", "\strut 4") ; +% stop_end_chart ; diff --git a/metapost/context/base/mpiv/mp-symb.mpiv b/metapost/context/base/mpiv/mp-symb.mpiv new file mode 100644 index 000000000..a84c84e82 --- /dev/null +++ b/metapost/context/base/mpiv/mp-symb.mpiv @@ -0,0 +1,351 @@ +%D \module +%D [ file=mp-symb.mp, +%D version=very old, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=navigation symbol macros, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA / Hans Hagen \& Ton Otten}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +%D Instead of these symbols, you can use the \type {contnav} +%D font by Taco Hoekwater that is derived form this file. + +u := 3; +h := 5u; +wt := 5u; +wb := .25wt; +o := .1u; +pw := .5u; + +drawoptions (withpen pencircle scaled pw); + +path lefttriangle, righttriangle, sublefttriangle, subrighttriangle; + +pair s ; s = (2wb,0) ; + +x1t = x2t = 0; +x3t = wt; +y3t = .5h; +z1t-z2t = (z3t-z2t) rotated 60; + +z4t = (z2t--z3t) intersectionpoint ((z1t--z2t) shifted s) ; +z5t = (z3t--z1t) intersectionpoint ((z1t--z2t) shifted s) ; + +righttriangle = z1t--z2t--z3t--cycle; +lefttriangle = righttriangle rotatedaround((0,.5h), 180) shifted (wt,0); + +subrighttriangle = z4t--((z2t--z3t--z1t) shifted s)--z5t ; +sublefttriangle = subrighttriangle rotatedaround((0,.5h), 180) shifted (wt,0); + +path sidebar; + +x1b = x4b = 0; +x2b = x3b = wb; +y1b = y2b = y1t; +y3b = y4b = y2t; + +sidebar = z1b--z2b--z3b--z4b--cycle; + +path midbar, onebar, twobar; + +hh = abs(y1t-y2t); + +%midbar := unitsquare scaled 2hh/3; +midbar := unitsquare scaled hh; +onebar := unitsquare xscaled (hh/3) yscaled hh; +twobar := onebar; + +def prepareglyph = + drawoptions (withpen pencircle scaled .5u); +enddef; + +def finishglyph = + set_outer_boundingbox currentpicture; + bboxmargin := o; + setbounds currentpicture to bbox currentpicture; +% draw boundingbox currentpicture withcolor red withpen pencircle scaled 1; +enddef; + +beginfig (1); + prepareglyph; + fill lefttriangle; + draw lefttriangle; % draw gets the bbox right, filldraw doesn't + finishglyph; +endfig; + +beginfig (2); + prepareglyph; + fill righttriangle; + draw righttriangle; + finishglyph; +endfig; + +beginfig (3); + prepareglyph; + fill sidebar; + draw sidebar; + fill lefttriangle shifted (.5s); + draw lefttriangle shifted (.5s); + finishglyph; +endfig; + +beginfig (4); + prepareglyph; + fill righttriangle; + draw righttriangle; + fill sidebar shifted (wt,0); + draw sidebar shifted (wt,0); + finishglyph; +endfig; + +beginfig (5); + prepareglyph; + fill lefttriangle; + draw lefttriangle; + fill lefttriangle shifted s; + draw lefttriangle shifted s; + finishglyph; +endfig; + +beginfig (6); + prepareglyph; + fill righttriangle; + draw righttriangle; + fill righttriangle shifted s; + draw righttriangle shifted s; + finishglyph; +endfig; + +beginfig (7); + prepareglyph; + fill midbar; + draw midbar; + finishglyph; +endfig; + +beginfig (8); + prepareglyph; + fill onebar; + draw onebar; + finishglyph; +endfig; + +beginfig (9); + prepareglyph; + fill twobar; + draw twobar; + fill twobar shifted (pw+hh/2,0); + draw twobar shifted (pw+hh/2,0); + finishglyph; +endfig; + +beginfig(101); + prepareglyph; + draw lefttriangle; + finishglyph; +endfig; + +beginfig(102); + prepareglyph; + draw righttriangle; + finishglyph; +endfig; + +beginfig(103); + prepareglyph; + draw sidebar; + draw lefttriangle shifted (.5s); + finishglyph; +endfig; + +beginfig(104); + prepareglyph; + draw righttriangle; + draw sidebar shifted (wt,0); + finishglyph; +endfig; + +beginfig(105); + prepareglyph; + draw lefttriangle; + draw lefttriangle shifted s; + finishglyph; +endfig; + +beginfig(106); + prepareglyph; + draw righttriangle; + draw righttriangle shifted s; + finishglyph; +endfig; + +beginfig(107); + prepareglyph; + draw midbar; + finishglyph; +endfig; + +beginfig(108); + prepareglyph; + draw onebar; + finishglyph; +endfig; + +beginfig(109); + prepareglyph; + draw twobar; + draw twobar shifted (pw+hh/2,0); + finishglyph; +endfig; + +beginfig(201); + prepareglyph; + draw lefttriangle; + finishglyph; +endfig; + +beginfig(202); + prepareglyph; + draw righttriangle; + finishglyph; +endfig; + +beginfig(203); + prepareglyph; + draw sidebar; + draw lefttriangle shifted (.5s); + finishglyph; +endfig; + +beginfig(204); + prepareglyph; + draw righttriangle; + draw sidebar shifted (wt,0); + finishglyph; +endfig; + +beginfig(205); + prepareglyph; + draw sublefttriangle shifted s; + draw lefttriangle shifted s; + finishglyph; +endfig; + +beginfig(206); + prepareglyph; + draw subrighttriangle; + draw righttriangle; + finishglyph; +endfig; + +beginfig(207); + prepareglyph; + draw midbar; + finishglyph; +endfig; + +beginfig(208); + prepareglyph; + draw onebar; + finishglyph; +endfig; + +beginfig(209); + prepareglyph; + draw twobar; + draw twobar shifted (pw+hh/2,0); + finishglyph; +endfig; + + +beginfig(999); + +picture collection [] ; + +prepareglyph ; +draw lefttriangle ; +finishglyph ; +collection[201] := currentpicture ; +currentpicture := nullpicture ; + +prepareglyph ; +draw righttriangle ; +finishglyph ; +collection[202] := currentpicture ; +currentpicture := nullpicture ; + +prepareglyph ; +draw sidebar ; +draw lefttriangle shifted (.5s) ; +finishglyph ; +collection[203] := currentpicture ; +currentpicture := nullpicture ; + +prepareglyph ; +draw righttriangle ; +draw sidebar shifted (wt,0) ; +finishglyph ; +collection[204] := currentpicture ; +currentpicture := nullpicture ; + +prepareglyph ; +draw sublefttriangle shifted s ; +draw lefttriangle shifted s ; +finishglyph ; +collection[205] := currentpicture ; +currentpicture := nullpicture ; + +prepareglyph ; +draw subrighttriangle ; +draw righttriangle ; +finishglyph ; +collection[206] := currentpicture ; +currentpicture := nullpicture ; + +prepareglyph ; +draw midbar ; +finishglyph ; +collection[207] := currentpicture ; +currentpicture := nullpicture ; + +prepareglyph ; +draw onebar ; +finishglyph ; +collection[208] := currentpicture ; +currentpicture := nullpicture ; + +prepareglyph ; +draw twobar ; +draw twobar shifted (pw+hh/2,0) ; +finishglyph ; +collection[209] := currentpicture ; +currentpicture := nullpicture ; + +for i=201 upto 209 : + collection[i] := collection[i] shifted - center collection[i] ; +endfor ; + +addto currentpicture also collection[205] shifted ( 0, 0) + withcolor (.3,.4,.5) ; +addto currentpicture also collection[202] shifted ( 0,1.5h) + withcolor (.5,.6,.7) ; +addto currentpicture also collection[201] shifted (1.5h, 0) + withcolor (.6,.7,.8) ; +addto currentpicture also collection[206] shifted (1.5h,1.5h) + withcolor (.4,.5,.6) ; + +collection[210] := currentpicture ; +currentpicture := nullpicture ; + +bboxmargin := .25u; + +fill bbox collection[210] withcolor .95(1,1,0); +addto currentpicture also collection[210] ; + +endfig ; + +end diff --git a/metapost/context/base/mpiv/mp-text.mpiv b/metapost/context/base/mpiv/mp-text.mpiv new file mode 100644 index 000000000..b68e8412a --- /dev/null +++ b/metapost/context/base/mpiv/mp-text.mpiv @@ -0,0 +1,163 @@ +%D \module +%D [ file=mp-text.mpiv, +%D version=2000.07.10, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=text support, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +%D This one is only used in metafun so it will become a module. + +if known context_text : endinput ; fi ; + +boolean context_text ; context_text := true ; + +def build_parshape (expr p, offset_or_path, dx, dy, baselineskip, strutheight, strutdepth, topskip) = + + if unknown trace_parshape : + boolean trace_parshape ; trace_parshape := false ; + fi ; + + begingroup ; + + save + q, l, r, line, tt, bb, + n, hsize, vsize, vvsize, voffset, hoffset, width, indent, + ll, lll, rr, rrr, cp, cq, t, b ; + + path + q, l, r, line, tt, bb ; + numeric + n, hsize, vsize, vvsize, voffset, hoffset, width[], indent[] ; + pair + ll, lll, rr, rrr, cp, cq, t, b ; + + n := 0 ; + cp := center p ; + + if path offset_or_path : + q := offset_or_path ; + cq := center q ; + voffset := dy ; + hoffset := dx ; + else : + q := p ; + cq := center q ; + hoffset := offset_or_path + dx ; + voffset := offset_or_path + dy ; + fi ; + + hsize := xpart lrcorner q - xpart llcorner q ; + vsize := ypart urcorner q - ypart lrcorner q ; + + q := p shifted - cp ; + + startsavingdata ; + + savedata "\global\parvoffset " & decimal voffset&"bp " ; + savedata "\global\parhoffset " & decimal hoffset&"bp " ; + savedata "\global\parwidth " & decimal hsize&"bp " ; + savedata "\global\parheight " & decimal vsize&"bp " ; + + if not path offset_or_path : + q := q xscaled ((hsize-2hoffset)/hsize) yscaled ((vsize-2voffset)/vsize) ; + fi ; + + hsize := xpart lrcorner q - xpart llcorner q ; + vsize := ypart urcorner q - ypart lrcorner q ; + + t := (ulcorner q -- urcorner q) intersection_point q ; + b := (llcorner q -- lrcorner q) intersection_point q ; + + if xpart directionpoint t of q < 0 : + q := reverse q ; + fi ; + + l := q cutbefore t ; + l := l if xpart point 0 of q < 0 : & q fi cutafter b ; + + r := q cutbefore b ; + r := r if xpart point 0 of q > 0 : & q fi cutafter t ; + + % tt := (ulcorner q -- urcorner q) shifted (0,-topskip) ; + % bb := (llcorner q -- lrcorner q) shifted (0,strutdepth) ; + + % l := l cutbefore (l intersection_point tt) ; + % l := l cutafter (l intersection_point bb) ; + % r := r cutbefore (r intersection_point bb) ; + % r := r cutafter (r intersection_point tt) ; + + if trace_parshape : + drawarrow p withpen pencircle scaled 2pt withcolor red ; + drawarrow l shifted cp withpen pencircle scaled 1pt withcolor green ; + drawarrow r shifted cp withpen pencircle scaled 1pt withcolor blue ; + fi ; + + vardef found_point (expr lin, pat, sig) = + pair a, b ; + a := pat intersection_point (lin shifted (0,strutheight)) ; + if intersection_found : + a := a shifted (0,-strutheight) ; + else : + a := pat intersection_point lin ; + fi ; + b := pat intersection_point (lin shifted (0,-strutdepth)) ; + if intersection_found : + if sig : + if xpart b > xpart a : a := b shifted (0,strutdepth) fi ; + else : + if xpart b < xpart a : a := b shifted (0,strutdepth) fi ; + fi ; + fi ; + a + enddef ; + + if (strutheight+strutdepth<baselineskip) : + vvsize := vsize ; + else : + vvsize := (vsize div baselineskip) * baselineskip ; + fi ; + + for i=topskip step baselineskip until vvsize : + + line := (ulcorner q -- urcorner q) shifted (0,-i-eps) ; + + ll := found_point(line,l,true ) ; + rr := found_point(line,r,false) ; + + if trace_parshape : + fill (ll--rr--rr shifted (0,strutheight)--ll shifted (0,strutheight)--cycle) shifted cp withcolor .5white ; + fill (ll--rr--rr shifted (0,-strutdepth)--ll shifted (0,-strutdepth)--cycle) shifted cp withcolor .7white ; + draw ll shifted cp withpen pencircle scaled 2pt ; + draw rr shifted cp withpen pencircle scaled 2pt ; + draw (ll--rr) shifted cp withpen pencircle scaled .5pt ; + fi ; + + n := n + 1 ; + indent[n] := abs(xpart ll - xpart llcorner q) ; + width[n] := abs(xpart rr - xpart ll) ; + + if (i=strutheight) and (width[n]<baselineskip) : + n := n - 1 ; + savedata "\global\chardef\parfirst=1 " ; + fi ; + + endfor ; + + savedata "\global\parlines " & decimal n ; + savedata "\global\partoks{ " ; + for i=1 upto n: + savedata decimal indent[i]&"bp " & decimal width[i]&"bp " ; + endfor ; + savedata "}" ; + + stopsavingdata ; + + endgroup ; + +enddef ; diff --git a/metapost/context/base/mpiv/mp-tool.mpiv b/metapost/context/base/mpiv/mp-tool.mpiv new file mode 100644 index 000000000..13104f17e --- /dev/null +++ b/metapost/context/base/mpiv/mp-tool.mpiv @@ -0,0 +1,2651 @@ +%D \module +%D [ file=mp-tool.mpiv, +%D version=1998.02.15, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=auxiliary macros, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +% def loadfile(expr name) = scantokens("input " & name & ";") enddef ; + +if known context_tool : endinput ; fi ; + +boolean context_tool ; context_tool := true ; + +let @## = @# ; + +%D New, version number testing: +%D +%D \starttyping +%D fill fullcircle scaled 2cm withcolor if mpversiongt("0.6") : red else : green fi ; +%D fill fullcircle scaled 1cm withcolor if mpversionlt(0.6) : blue else : white fi ; +%D \stoptyping + +if not known mpversion : string mpversion ; mpversion := "0.641" ; fi ; + +newinternal metapostversion ; metapostversion := scantokens(mpversion) ; + +%D We always want \EPS\ conforming output, so we say: + +prologues := 1 ; +warningcheck := 0 ; +mpprocset := 1 ; + +%D Namespace handling: + +% let exclamationmark = ! ; +% let questionmark = ? ; +% +% def unprotect = +% let ! = relax ; +% let ? = relax ; +% enddef ; +% +% def protect = +% let ! = exclamationmark ; +% let ? = questionmark ; +% enddef ; +% +% unprotect ; +% +% mp!some!module = 10 ; show mp!some!module ; show somemodule ; +% +% protect ; + +string space ; space := char 32 ; +string percent ; percent := char 37 ; +string crlf ; crlf := char 10 & char 13 ; +string dquote ; dquote := char 34 ; + +let SPACE = space ; +let CRLF = crlf ; +let DQUOTE = dquote ; +let PERCENT = percent ; + +vardef ddecimal primary p = + decimal xpart p & " " & decimal ypart p +enddef ; + +%D Plain compatibility: + +string plain_compatibility_data ; plain_compatibility_data := "" ; + +def startplaincompatibility = + begingroup ; + scantokens plain_compatibility_data ; +enddef ; + +def stopplaincompatibility = + endgroup ; +enddef ; + +%D More neutral: + +let triplet = rgbcolor ; +let quadruplet = cmykcolor ; + +%D Colors: + +newinternal nocolormodel ; nocolormodel := 1 ; +newinternal greycolormodel ; greycolormodel := 3 ; +newinternal graycolormodel ; graycolormodel := 3 ; +newinternal rgbcolormodel ; rgbcolormodel := 5 ; +newinternal cmykcolormodel ; cmykcolormodel := 7 ; + +let grayscale = graycolor ; +let greyscale = greycolor ; + +vardef colorpart expr c = + if not picture c : + 0 + elseif colormodel c = greycolormodel : + greypart c + elseif colormodel c = rgbcolormodel : + (redpart c,greenpart c,bluepart c) + elseif colormodel c = cmykcolormodel : + (cyanpart c,magentapart c,yellowpart c,blackpart c) + else : + 0 % black + fi +enddef ; + +vardef colorlike(text c) text v = % colorlike(a) b, c, d ; + save _p_ ; picture _p_ ; + forsuffixes i=v : + _p_ := image(draw origin withcolor c ;) ; % intercept pre and postscripts + if (colormodel _p_ = cmykcolormodel) : + cmykcolor i ; + elseif (colormodel _p_ = rgbcolormodel) : + rgbcolor i ; + else : + greycolor i ; + fi ; + endfor ; +enddef ; + +%D Also handy (when we flush colors): + +vardef dddecimal primary c = + decimal redpart c & " " & decimal greenpart c & " " & decimal bluepart c +enddef ; + +vardef ddddecimal primary c = + decimal cyanpart c & " " & decimal magentapart c & " " & decimal yellowpart c & " " & decimal blackpart c +enddef ; + +vardef colordecimals primary c = + if cmykcolor c : + decimal cyanpart c & ":" & decimal magentapart c & ":" & decimal yellowpart c & ":" & decimal blackpart c + elseif rgbcolor c : + decimal redpart c & ":" & decimal greenpart c & ":" & decimal bluepart c + else : + decimal c + fi +enddef ; + +vardef colordecimalslist(text t) = + save b ; boolean b ; b := false ; + for s=t : + if b : & " " & fi + colordecimals(s) + hide(b := true ;) + endfor +enddef ; + +% vardef _ctx_color_spec_ primary c = +% if cmykcolor c : +% "c=" & decimal cyanpart c & +% ",m=" & decimal magentapart c & +% ",y=" & decimal yellowpart c & +% ",k=" & decimal blackpart c +% elseif rgbcolor c : +% "r=" & decimal redpart c & +% ",g=" & decimal greenpart c & +% ",b=" & decimal bluepart c +% else : +% "s=" & decimal c +% fi +% enddef ; +% +% vardef _ctx_color_spec_list_(text t) = +% save b ; boolean b ; b := false ; +% for s=t : +% if b : & " " & fi +% _ctx_color_spec_(s) +% hide(b := true ;) +% endfor +% enddef ; + +%D We have standardized data file names: + +def job_name = + jobname +enddef ; + +def data_mpd_file = + job_name & "-mp.mpd" +enddef ; + +%D Because \METAPOST\ has a hard coded limit of 4~datafiles, +%D we need some trickery when we have multiple files. This will +%D be redone (via \LUA). + +if unknown collapse_data : + boolean collapse_data ; + collapse_data := false ; +fi ; + +boolean savingdata ; savingdata := false ; +boolean savingdatadone ; savingdatadone := false ; + +def savedata expr txt = + write if collapse_data : + txt + else : + if savingdata : txt else : "\MPdata{" & decimal charcode & "}{" & txt & "}" fi & "%" + fi to data_mpd_file ; +enddef ; + +def startsavingdata = + savingdata := true ; + savingdatadone := true ; + if collapse_data : + write "\MPdata{" & decimal charcode & "}{%" to data_mpd_file ; + fi ; +enddef ; + +def stopsavingdata = + if collapse_data : + write "}%" to data_mpd_file ; + fi ; + savingdata := false ; +enddef ; + +def finishsavingdata = + if savingdatadone : + write EOF to data_mpd_file ; + savingdatadone := false ; + fi ; +enddef ; + +%D Instead of a keystroke eating save and allocation +%D sequence, you can use the \citeer {new} alternatives to +%D save and allocate in one command. + +def newcolor text v = forsuffixes i=v : save i ; color i ; endfor ; enddef ; +def newnumeric text v = forsuffixes i=v : save i ; numeric i ; endfor ; enddef ; +def newboolean text v = forsuffixes i=v : save i ; boolean i ; endfor ; enddef ; +def newtransform text v = forsuffixes i=v : save i ; transform i ; endfor ; enddef ; +def newpath text v = forsuffixes i=v : save i ; path i ; endfor ; enddef ; +def newpicture text v = forsuffixes i=v : save i ; picture i ; endfor ; enddef ; +def newstring text v = forsuffixes i=v : save i ; string i ; endfor ; enddef ; +def newpair text v = forsuffixes i=v : save i ; pair i ; endfor ; enddef ; + +%D Sometimes we don't want parts of the graphics add to the +%D bounding box. One way of doing this is to save the bounding +%D box, draw the graphics that may not count, and restore the +%D bounding box. +%D +%D \starttyping +%D push_boundingbox currentpicture; +%D pop_boundingbox currentpicture; +%D \stoptyping +%D +%D The bounding box can be called with: +%D +%D \starttyping +%D boundingbox currentpicture +%D inner_boundingbox currentpicture +%D outer_boundingbox currentpicture +%D \stoptyping +%D +%D Especially the latter one can be of use when we include +%D the graphic in a document that is clipped to the bounding +%D box. In such occasions one can use: +%D +%D \starttyping +%D set_outer_boundingbox currentpicture; +%D \stoptyping +%D +%D Its counterpart is: +%D +%D \starttyping +%D set_inner_boundingbox p +%D \stoptyping + +path mfun_boundingbox_stack ; +numeric mfun_boundingbox_stack_depth ; + +mfun_boundingbox_stack_depth := 0 ; + +def pushboundingbox text p = + mfun_boundingbox_stack_depth := mfun_boundingbox_stack_depth + 1 ; + mfun_boundingbox_stack[mfun_boundingbox_stack_depth] := boundingbox p ; +enddef ; + +def popboundingbox text p = + setbounds p to mfun_boundingbox_stack[mfun_boundingbox_stack_depth] ; + mfun_boundingbox_stack[mfun_boundingbox_stack_depth] := origin ; + mfun_boundingbox_stack_depth := mfun_boundingbox_stack_depth - 1 ; +enddef ; + +let push_boundingbox = pushboundingbox ; % downward compatible +let pop_boundingbox = popboundingbox ; % downward compatible + +vardef boundingbox primary p = + if (path p) or (picture p) : + llcorner p -- lrcorner p -- urcorner p -- ulcorner p + else : + origin + fi -- cycle +enddef; + +vardef innerboundingbox primary p = + top rt llcorner p -- + top lft lrcorner p -- + bot lft urcorner p -- + bot rt ulcorner p -- cycle +enddef; + +vardef outerboundingbox primary p = + bot lft llcorner p -- + bot rt lrcorner p -- + top rt urcorner p -- + top lft ulcorner p -- cycle +enddef; + +def inner_boundingbox = innerboundingbox enddef ; +def outer_boundingbox = outerboundingbox enddef ; + +vardef set_inner_boundingbox text q = % obsolete + setbounds q to innerboundingbox q; +enddef; + +vardef set_outer_boundingbox text q = % obsolete + setbounds q to outerboundingbox q; +enddef; + +%D Some missing functions can be implemented rather straightforward (thanks to +%D Taco and others): + +% oldpi := 3.14159265358979323846 ; % from <math.h> +pi := 3.14159265358979323846264338327950288419716939937510 ; % 50 digits +radian := 180/pi ; % 2pi*radian = 360 ; + +% let +++ = ++ ; + +vardef sqr primary x = x*x enddef ; +vardef log primary x = if x=0: 0 else: mlog(x)/mlog(10) fi enddef ; +vardef ln primary x = if x=0: 0 else: mlog(x)/256 fi enddef ; +vardef exp primary x = (mexp 256)**x enddef ; +vardef inv primary x = if x=0: 0 else: x**-1 fi enddef ; + +vardef pow (expr x,p) = x**p enddef ; + +vardef tand primary x = sind(x)/cosd(x) enddef ; +vardef cotd primary x = cosd(x)/sind(x) enddef ; + +vardef sin primary x = sind(x*radian) enddef ; +vardef cos primary x = cosd(x*radian) enddef ; +vardef tan primary x = sin(x)/cos(x) enddef ; +vardef cot primary x = cos(x)/sin(x) enddef ; + +vardef asin primary x = angle((1+-+x,x)) enddef ; +vardef acos primary x = angle((x,1+-+x)) enddef ; +vardef atan primary x = angle(1,x) enddef ; + +vardef invsin primary x = (asin(x))/radian enddef ; +vardef invcos primary x = (acos(x))/radian enddef ; +vardef invtan primary x = (atan(x))/radian enddef ; + +vardef acosh primary x = ln(x+(x+-+1)) enddef ; +vardef asinh primary x = ln(x+(x++1)) enddef ; + +vardef sinh primary x = save xx ; xx = exp x ; (xx-1/xx)/2 enddef ; +vardef cosh primary x = save xx ; xx = exp x ; (xx+1/xx)/2 enddef ; + +%D Like mod, but useful for anglesl it returns (-.5d,+.5d] and is used +%D in for instance mp-chem. + +primarydef a zmod b = (-((b/2 - a) mod b) + b/2) enddef ; + +%D Sometimes this is handy: + +def undashed = + dashed nullpicture +enddef ; + +%D We provide two macros for drawing stripes across a shape. +%D The first method (with the n suffix) uses another method, +%D slower in calculation, but more efficient when drawn. The +%D first macro divides the sides into n equal parts. The +%D first argument specifies the way the lines are drawn, while +%D the second argument identifier the way the shape is to be +%D drawn. +%D +%D \starttyping +%D stripe_path_n +%D (dashed evenly withcolor blue) +%D (filldraw) +%D fullcircle xscaled 100 yscaled 40 shifted (50,50) withpen pencircle scaled 4; +%D \stoptyping +%D +%D The a (or angle) alternative supports arbitrary angles and +%D is therefore more versatile. +%D +%D \starttyping +%D stripe_path_a +%D (withpen pencircle scaled 2 withcolor red) +%D (draw) +%D fullcircle xscaled 100 yscaled 40 withcolor blue; +%D \stoptyping +%D +%D We have two alternatives, controlled by arguments or defaults (when arguments +%D are zero). +%D +%D The newer and nicer interface is used as follows (triggered by a question by Mari): +%D +%D \starttyping +%D draw image (draw fullcircle scaled 3cm shifted (0cm,0cm) withcolor green) numberstriped (1,10,3) withcolor red ; +%D draw image (draw fullcircle scaled 3cm shifted (3cm,0cm) withcolor green) numberstriped (2,20,3) withcolor green ; +%D draw image (draw fullcircle scaled 3cm shifted (3cm,3cm) withcolor green) numberstriped (3,10,5) withcolor blue ; +%D draw image (draw fullcircle scaled 3cm shifted (0cm,3cm) withcolor green) numberstriped (4,20,5) withcolor yellow ; +%D +%D draw image (draw fullcircle scaled 3cm shifted (6cm,0cm) withcolor green) anglestriped (1,20,2) withcolor red ; +%D draw image (draw fullcircle scaled 3cm shifted (9cm,0cm) withcolor green) anglestriped (2,40,2) withcolor green ; +%D draw image (draw fullcircle scaled 3cm shifted (9cm,3cm) withcolor green) anglestriped (3,60,2) withcolor blue ; +%D draw image (draw fullcircle scaled 3cm shifted (6cm,3cm) withcolor green) anglestriped (4,80,2) withcolor yellow ; +%D +%D draw image ( +%D draw fullcircle scaled 3cm shifted (0cm,0cm) withcolor green withpen pencircle scaled 2mm ; +%D draw fullcircle scaled 2cm shifted (0cm,1cm) withcolor blue withpen pencircle scaled 3mm ; +%D ) shifted (9cm,0cm) numberstriped (1,10,3) withcolor red ; +%D +%D draw image ( +%D draw fullcircle scaled 3cm shifted (0cm,0cm) withcolor green withpen pencircle scaled 2mm ; +%D draw fullcircle scaled 2cm shifted (0cm,1cm) withcolor blue withpen pencircle scaled 3mm ; +%D ) shifted (12cm,0cm) numberstriped (2,10,3) withcolor red ; +%D +%D draw image ( +%D draw fullcircle scaled 3cm shifted (0cm,0cm) withcolor green withpen pencircle scaled 2mm ; +%D draw fullcircle scaled 2cm shifted (0cm,1cm) withcolor blue withpen pencircle scaled 3mm ; +%D ) shifted (9cm,5cm) numberstriped (3,10,3) withcolor red ; +%D +%D draw image ( +%D draw fullcircle scaled 3cm shifted (0cm,0cm) withcolor green withpen pencircle scaled 2mm ; +%D draw fullcircle scaled 2cm shifted (0cm,1cm) withcolor blue withpen pencircle scaled 3mm ; +%D ) shifted (12cm,5cm) numberstriped (4,10,3) withcolor red ; +%D \stoptyping + +stripe_n := 10; +stripe_slot := 3; +stripe_gap := 5; +stripe_angle := 45; + +def mfun_tool_striped_number_action text extra = + for i = 1/used_n step 1/used_n until 1 : + draw point (1+i) of bounds -- point (3-i) of bounds withpen pencircle scaled penwidth extra ; + endfor ; + for i = 0 step 1/used_n until 1 : + draw point (3+i) of bounds -- point (1-i) of bounds withpen pencircle scaled penwidth extra ; + endfor ; +enddef ; + +def mfun_tool_striped_set_options(expr option) = + save isinner, swapped ; + boolean isinner, swapped ; + if option = 1 : + isinner := false ; + swapped := false ; + elseif option = 2 : + isinner := true ; + swapped := false ; + elseif option = 3 : + isinner := false ; + swapped := true ; + elseif option = 4 : + isinner := true ; + swapped := true ; + else : + isinner := false ; + swapped := false ; + fi ; +enddef ; + +vardef mfun_tool_striped_number(expr option, p, s_n, s_slot) text extra = + image ( + begingroup ; + save pattern, shape, bounds, penwidth, used_n, used_slot ; + picture pattern, shape ; path bounds ; numeric used_s, used_slot ; + mfun_tool_striped_set_options(option) ; + used_slot := if s_slot = 0 : stripe_slot else : s_slot fi ; + used_n := if s_n = 0 : stripe_n else : s_n fi ; + shape := image(draw p) ; + bounds := boundingbox shape ; + penwidth := min(ypart urcorner shape - ypart llcorner shape, xpart urcorner shape - xpart llcorner shape) / (used_slot * used_n) ; + pattern := image ( + if isinner : + mfun_tool_striped_number_action extra ; + for s within shape : + if stroked s or filled s : + clip currentpicture to pathpart s ; + fi + endfor ; + else : + for s within shape : + if stroked s or filled s : + draw image ( + mfun_tool_striped_number_action extra ; + clip currentpicture to pathpart s ; + ) ; + fi ; + endfor ; + fi ; + ) ; + if swapped : + addto currentpicture also shape ; + addto currentpicture also pattern ; + else : + addto currentpicture also pattern ; + addto currentpicture also shape ; + fi ; + endgroup ; + ) +enddef ; + +def mfun_tool_striped_angle_action text extra = + for i = minimum -.5used_gap step used_gap until maximum : + draw (minimum,i) -- (maximum,i) extra ; + endfor ; + currentpicture := currentpicture rotated used_angle ; +enddef ; + +vardef mfun_tool_striped_angle(expr option, p, s_angle, s_gap) text extra = + image ( + begingroup ; + save pattern, shape, mask, maximum, minimum, centrum, used_angle, used_gap ; + picture pattern, shape, mask ; numeric maximum, minimum ; pair centrum ; numeric used_angle, used_gap ; + mfun_tool_striped_set_options(option) ; + used_angle := if s_angle = 0 : stripe_angle else : s_angle fi ; + used_gap := if s_gap = 0 : stripe_gap else : s_gap fi ; + shape := image(draw p) ; + centrum := center shape ; + shape := shape shifted - centrum ; + mask := shape rotated used_angle ; + maximum := max (xpart llcorner mask, xpart urcorner mask, ypart llcorner mask, ypart urcorner mask) ; + minimum := min (xpart llcorner mask, xpart urcorner mask, ypart llcorner mask, ypart urcorner mask) ; + pattern := image ( + if isinner : + mfun_tool_striped_angle_action extra ; + for s within shape : + if stroked s or filled s : + clip currentpicture to pathpart s ; + fi + endfor ; + else : + for s within shape : + if stroked s or filled s : + draw image ( + mfun_tool_striped_angle_action extra ; + clip currentpicture to pathpart s ; + ) ; + fi ; + endfor ; + fi ; + ) ; + if swapped : + addto currentpicture also shape ; + addto currentpicture also pattern ; + else : + addto currentpicture also pattern ; + addto currentpicture also shape ; + fi ; + currentpicture := currentpicture shifted - centrum ; + endgroup ; + ) +enddef; + +newinternal striped_normal_inner ; striped_normal_inner := 1 ; +newinternal striped_reverse_inner ; striped_reverse_inner := 2 ; +newinternal striped_normal_outer ; striped_normal_outer := 3 ; +newinternal striped_reverse_outer ; striped_reverse_outer := 4 ; + +secondarydef p anglestriped s = + mfun_tool_striped_angle(redpart s,p,greenpart s,bluepart s) +enddef ; + +secondarydef p numberstriped s = + mfun_tool_striped_number(redpart s,p,greenpart s,bluepart s) +enddef ; + +% for old times sake: + +def stripe_path_n (text s_spec) (text s_draw) expr s_path = + do_stripe_path_n (s_spec) (s_draw) (s_path) +enddef; + +def do_stripe_path_n (text s_spec) (text s_draw) (expr s_path) text s_text = + draw image(s_draw s_path s_text) numberstriped(3,0,0) s_spec ; +enddef ; + +def stripe_path_a (text s_spec) (text s_draw) expr s_path = + do_stripe_path_a (s_spec) (s_draw) (s_path) +enddef; + +def do_stripe_path_a (text s_spec) (text s_draw) (expr s_path) text s_text = + draw image(s_draw s_path s_text) anglestriped(3,0,0) s_spec ; +enddef ; + +%D A few normalizing macros: + +primarydef p xsized w = + (p if (bbwidth (p)>0) and (w>0) : scaled (w/bbwidth (p)) fi) +enddef ; + +primarydef p ysized h = + (p if (bbheight(p)>0) and (h>0) : scaled (h/bbheight(p)) fi) +enddef ; + +primarydef p xysized s = + begingroup + save wh, w, h ; pair wh ; numeric w, h ; + wh := paired (s) ; w := bbwidth(p) ; h := bbheight(p) ; + p + if (w>0) and (h>0) : + if xpart wh > 0 : xscaled (xpart wh/w) fi + if ypart wh > 0 : yscaled (ypart wh/h) fi + fi + endgroup +enddef ; + +let sized = xysized ; + +def xscale_currentpicture(expr w) = % obsolete + currentpicture := currentpicture xsized w ; +enddef; + +def yscale_currentpicture(expr h) = % obsolete + currentpicture := currentpicture ysized h ; +enddef; + +def xyscale_currentpicture(expr w, h) = % obsolete + currentpicture := currentpicture xysized (w,h) ; +enddef; + +def scale_currentpicture(expr w, h) = % obsolete + currentpicture := currentpicture xsized w ; + currentpicture := currentpicture ysized h ; +enddef; + +%D A full circle is centered at the origin, while a unitsquare +%D is located in the first quadrant. Now guess what kind of +%D path fullsquare and unitcircle do return. + +path fullsquare, unitcircle ; + +fullsquare := unitsquare shifted - center unitsquare ; +unitcircle := fullcircle shifted urcorner fullcircle ; + +%D Some more paths: + +path urcircle, ulcircle, llcircle, lrcircle ; + +urcircle := origin -- (+.5,0) & (+.5,0){up} .. (0,+.5) & (0,+.5) -- cycle ; +ulcircle := origin -- (0,+.5) & (0,+.5){left} .. (-.5,0) & (-.5,0) -- cycle ; +llcircle := origin -- (-.5,0) & (-.5,0){down} .. (0,-.5) & (0,-.5) -- cycle ; +lrcircle := origin -- (0,-.5) & (0,-.5){right} .. (+.5,0) & (+.5,0) -- cycle ; + +path tcircle, bcircle, lcircle, rcircle ; + +tcircle = origin -- (+.5,0) & (+.5,0) {up} .. (0,+.5) .. {down} (-.5,0) -- cycle ; +bcircle = origin -- (-.5,0) & (-.5,0) {down} .. (0,-.5) .. {up} (+.5,0) -- cycle ; +lcircle = origin -- (0,+.5) & (0,+.5) {left} .. (-.5,0) .. {right} (0,-.5) -- cycle ; +rcircle = origin -- (0,-.5) & (0,-.5) {right} .. (+.5,0) .. {left} (0,+.5) -- cycle ; + +path urtriangle, ultriangle, lltriangle, lrtriangle ; % watch out: it's contrary to what you expect and starts in the origin + +urtriangle := origin -- (+.5,0) -- (0,+.5) -- cycle ; +ultriangle := origin -- (0,+.5) -- (-.5,0) -- cycle ; +lltriangle := origin -- (-.5,0) -- (0,-.5) -- cycle ; +lrtriangle := origin -- (0,-.5) -- (+.5,0) -- cycle ; + +path triangle, uptriangle, downtriangle, lefttriangle, righttriangle ; + +triangle := (1,0) -- (1,0) rotated 120 -- (1,0) rotated -120 -- cycle ; + +uptriangle := triangle rotated 90 ; +downtriangle := triangle rotated -90 ; +lefttriangle := triangle rotated 180 ; +righttriangle := triangle ; + +path unitdiamond, fulldiamond ; + +unitdiamond := (.5,0) -- (1,.5) -- (.5,1) -- (0,.5) -- cycle ; +fulldiamond := unitdiamond shifted - center unitdiamond ; + +%D More robust: + +% let normalscaled = scaled ; +% let normalxscaled = xscaled ; +% let normalyscaled = yscaled ; +% +% def scaled expr s = normalscaled (s) enddef ; +% def xscaled expr s = normalxscaled (s) enddef ; +% def yscaled expr s = normalyscaled (s) enddef ; + +%D Shorter + +primarydef p xyscaled q = % secundarydef does not work out well + begingroup + save qq ; pair qq ; + qq = paired(q) ; + p + if xpart qq <> 0 : xscaled (xpart qq) fi + if ypart qq <> 0 : yscaled (ypart qq) fi + endgroup +enddef ; + +%D Some personal code that might move to another module + +def set_grid(expr w, h, nx, ny) = + boolean grid[][] ; boolean grid_full ; + numeric grid_w, grid_h, grid_nx, grid_ny, grid_x, grid_y, grid_left ; + grid_w := w ; + grid_h := h ; + grid_nx := nx ; + grid_ny := ny ; + grid_x := round(w/grid_nx) ; % +.5) ; + grid_y := round(h/grid_ny) ; % +.5) ; + grid_left := (1+grid_x)*(1+grid_y) ; + grid_full := false ; + for i=0 upto grid_x : + for j=0 upto grid_y : + grid[i][j] := false ; + endfor ; + endfor ; +enddef ; + +vardef new_on_grid(expr _dx_, _dy_) = + dx := _dx_ ; + dy := _dy_ ; + ddx := min(round(dx/grid_nx),grid_x) ; % +.5),grid_x) ; + ddy := min(round(dy/grid_ny),grid_y) ; % +.5),grid_y) ; + if not grid_full and not grid[ddx][ddy] : + grid[ddx][ddy] := true ; + grid_left := grid_left-1 ; + grid_full := (grid_left=0) ; + true + else : + false + fi +enddef ; + +%D usage: \type{innerpath peepholed outerpath}. +%D +%D beginfig(1); +%D def fullsquare = (unitsquare shifted -center unitsquare) enddef ; +%D fill (fullsquare scaled 200) withcolor red ; +%D path p ; p := (fullcircle scaled 100) ; bboxmargin := 0 ; +%D fill p peepholed bbox p ; +%D endfig; + +secondarydef p peepholed q = + begingroup + save start ; pair start ; + start := point 0 of p ; + if xpart start >= xpart center p : + if ypart start >= ypart center p : + urcorner q -- ulcorner q -- llcorner q -- lrcorner q -- + reverse p -- lrcorner q -- cycle + else : + lrcorner q -- urcorner q -- ulcorner q -- llcorner q -- + reverse p -- llcorner q -- cycle + fi + else : + if ypart start > ypart center p : + ulcorner q -- llcorner q -- lrcorner q -- urcorner q -- + reverse p -- urcorner q -- cycle + else : + llcorner q -- lrcorner q -- urcorner q -- ulcorner q -- + reverse p -- ulcorner q -- cycle + fi + fi + endgroup +enddef ; + +boolean intersection_found ; + +secondarydef p intersection_point q = + begingroup + save x_, y_ ; + (x_,y_) = p intersectiontimes q ; + if x_<0 : + intersection_found := false ; + center p % origin + else : + intersection_found := true ; + .5[point x_ of p, point y_ of q] + fi + endgroup +enddef ; + +%D New, undocumented, experimental: + +vardef tensecircle (expr width, height, offset) = + (-width/2,-height/2) ... (0,-height/2-offset) ... + (+width/2,-height/2) ... (+width/2+offset,0) ... + (+width/2,+height/2) ... (0,+height/2+offset) ... + (-width/2,+height/2) ... (-width/2-offset,0) ... cycle +enddef ; + +vardef roundedsquare (expr width, height, offset) = + (offset,0) -- (width-offset,0) {right} .. + (width,offset) -- (width,height-offset) {up} .. + (width-offset,height) -- (offset,height) {left} .. + (0,height-offset) -- (0,offset) {down} .. cycle +enddef ; + +%D Some colors. + +def colortype(expr c) = + if cmykcolor c : cmykcolor elseif rgbcolor c : rgbcolor else : grayscale fi +enddef ; + +vardef whitecolor(expr c) = + if cmykcolor c : (0,0,0,0) elseif rgbcolor c : (1,1,1) else : 1 fi +enddef ; + +vardef blackcolor expr c = + if cmykcolor c : (0,0,0,1) elseif rgbcolor c : (0,0,0) else : 0 fi +enddef ; + +%D Well, this is the dangerous and naive version: + +def drawfill text t = + fill t ; + draw t ; +enddef; + +%D This two step approach saves the path first, since it can +%D be a function. Attributes must not be randomized. + +def drawfill expr c = + path _c_ ; _c_ := c ; + mfun_do_drawfill +enddef ; + +def mfun_do_drawfill text t = + draw _c_ t ; + fill _c_ t ; +enddef; + +def undrawfill expr c = + drawfill c withcolor background % rather useless +enddef ; + +%D Moved from mp-char.mp + +vardef paired primary d = + if pair d : d else : (d,d) fi +enddef ; + +vardef tripled primary d = + if color d : d else : (d,d,d) fi +enddef ; + +% maybe secondaries: + +primarydef p enlarged d = ( p llmoved d -- p lrmoved d -- p urmoved d -- p ulmoved d -- cycle ) enddef ; +primarydef p llenlarged d = ( p llmoved d -- lrcorner p -- urcorner p -- ulcorner p -- cycle ) enddef ; +primarydef p lrenlarged d = ( llcorner p -- p lrmoved d -- urcorner p -- ulcorner p -- cycle ) enddef ; +primarydef p urenlarged d = ( llcorner p -- lrcorner p -- p urmoved d -- ulcorner p -- cycle ) enddef ; +primarydef p ulenlarged d = ( llcorner p -- lrcorner p -- urcorner p -- p ulmoved d -- cycle ) enddef ; + +primarydef p llmoved d = ( (llcorner p) shifted (-xpart paired(d),-ypart paired(d)) ) enddef ; +primarydef p lrmoved d = ( (lrcorner p) shifted (+xpart paired(d),-ypart paired(d)) ) enddef ; +primarydef p urmoved d = ( (urcorner p) shifted (+xpart paired(d),+ypart paired(d)) ) enddef ; +primarydef p ulmoved d = ( (ulcorner p) shifted (-xpart paired(d),+ypart paired(d)) ) enddef ; + +primarydef p leftenlarged d = ( (llcorner p) shifted (-d,0) -- lrcorner p -- urcorner p -- (ulcorner p) shifted (-d,0) -- cycle ) enddef ; +primarydef p rightenlarged d = ( llcorner p -- (lrcorner p) shifted (d,0) -- (urcorner p) shifted (d,0) -- ulcorner p -- cycle ) enddef ; +primarydef p topenlarged d = ( llcorner p -- lrcorner p -- (urcorner p) shifted (0,d) -- (ulcorner p) shifted (0,d) -- cycle ) enddef ; +primarydef p bottomenlarged d = ( llcorner p shifted (0,-d) -- lrcorner p shifted (0,-d) -- urcorner p -- ulcorner p -- cycle ) enddef ; + +%D Handy for testing/debugging: + +primarydef p crossed d = ( + if pair p : + p shifted (-d, 0) -- p -- + p shifted ( 0,-d) -- p -- + p shifted (+d, 0) -- p -- + p shifted ( 0,+d) -- p -- cycle + else : + center p shifted (-d, 0) -- llcorner p -- + center p shifted ( 0,-d) -- lrcorner p -- + center p shifted (+d, 0) -- urcorner p -- + center p shifted ( 0,+d) -- ulcorner p -- cycle + fi +) enddef ; + +%D Also handy (math ladders): + +vardef laddered primary p = % was expr + point 0 of p + for i=1 upto length(p) : + -- (xpart (point i of p), ypart (point (i-1) of p)) -- (point i of p) + endfor +enddef ; + +%D Saves typing: + +% vardef bottomboundary primary p = (llcorner p -- lrcorner p) enddef ; +% vardef rightboundary primary p = (lrcorner p -- urcorner p) enddef ; +% vardef topboundary primary p = (urcorner p -- ulcorner p) enddef ; +% vardef leftboundary primary p = (ulcorner p -- llcorner p) enddef ; + +vardef bottomboundary primary p = if pair p : p else : (llcorner p -- lrcorner p) fi enddef ; +vardef rightboundary primary p = if pair p : p else : (lrcorner p -- urcorner p) fi enddef ; +vardef topboundary primary p = if pair p : p else : (urcorner p -- ulcorner p) fi enddef ; +vardef leftboundary primary p = if pair p : p else : (ulcorner p -- llcorner p) fi enddef ; + +%D Nice too: + +primarydef p superellipsed s = + superellipse ( + .5[lrcorner p,urcorner p], + .5[urcorner p,ulcorner p], + .5[ulcorner p,llcorner p], + .5[llcorner p,lrcorner p], + s + ) +enddef ; + +primarydef p squeezed s = ( + (llcorner p .. .5[llcorner p,lrcorner p] shifted ( 0, ypart paired(s)) .. lrcorner p) & + (lrcorner p .. .5[lrcorner p,urcorner p] shifted (-xpart paired(s), 0) .. urcorner p) & + (urcorner p .. .5[urcorner p,ulcorner p] shifted ( 0,-ypart paired(s)) .. ulcorner p) & + (ulcorner p .. .5[ulcorner p,llcorner p] shifted ( xpart paired(s), 0) .. llcorner p) & cycle +) enddef ; + +primarydef p randomshifted s = + begingroup ; + save ss ; pair ss ; + ss := paired(s) ; + p shifted (-.5xpart ss + uniformdeviate xpart ss,-.5ypart ss + uniformdeviate ypart ss) + endgroup +enddef ; + +primarydef p randomized s = ( + if path p : + for i=0 upto length(p)-1 : + ((point i of p) randomshifted s) .. controls + ((postcontrol i of p) randomshifted s) and + ((precontrol (i+1) of p) randomshifted s) .. + endfor + if cycle p : + cycle + else : + ((point length(p) of p) randomshifted s) + fi + elseif pair p : + p randomshifted s + elseif cmykcolor p : + if color s : + ((uniformdeviate cyanpart s) * cyanpart p, + (uniformdeviate magentapart s) * magentapart p, + (uniformdeviate yellowpart s) * yellowpart p, + (uniformdeviate blackpart s) * blackpart p) + elseif pair s : + ((xpart s + (uniformdeviate (ypart s - xpart s))) * p) + else : + ((uniformdeviate s) * p) + fi + elseif rgbcolor p : + if color s : + ((uniformdeviate redpart s) * redpart p, + (uniformdeviate greenpart s) * greenpart p, + (uniformdeviate bluepart s) * bluepart p) + elseif pair s : + ((xpart s + (uniformdeviate (ypart s - xpart s))) * p) + else : + ((uniformdeviate s) * p) + fi + elseif color p : + if color s : + ((uniformdeviate greypart s) * greypart p) + elseif pair s : + ((xpart s + (uniformdeviate (ypart s - xpart s))) * p) + else : + ((uniformdeviate s) * p) + fi + else : + p + uniformdeviate s + fi +) enddef ; + +%D Not perfect (alternative for interpath) + +vardef interpolated(expr s, p, q) = + save m ; numeric m ; + m := max(length(p),length(q)) ; + if path p : + for i=0 upto m-1 : + s[point (i /m) along p,point (i /m) along q] .. controls + s[postcontrol (i /m) along p,postcontrol (i /m) along q] and + s[precontrol ((i+1)/m) along p,precontrol ((i+1)/m) along q] .. + endfor + if cycle p : + cycle + else : + s[point infinity of p,point infinity of q] + fi + else : + a[p,q] + fi +enddef ; + +%D Interesting too: + +primarydef p paralleled d = ( + p shifted if d < 0 : - fi ((point abs(d) on (p rotatedaround(point 0 of p,90))) - point 0 of p) +) enddef ; + +vardef punked primary p = + point 0 of p for i=1 upto length(p)-1 : -- point i of p endfor + if cycle p : -- cycle else : -- point length(p) of p fi +enddef ; + +vardef curved primary p = + point 0 of p for i=1 upto length(p)-1 : .. point i of p endfor + if cycle p : .. cycle else : .. point length(p) of p fi +enddef ; + +primarydef p blownup s = + begingroup + save _p_ ; path _p_ ; + _p_ := p xysized (bbwidth(p)+2(xpart paired(s)),bbheight(p)+2(ypart paired(s))) ; + (_p_ shifted (center p - center _p_)) + endgroup +enddef ; + +%D Rather fundamental. + +% not yet ok + +vardef leftrightpath(expr p, l) = % used in s-pre-19 + save q, r, t, b ; path q, r ; pair t, b ; + t := (ulcorner p -- urcorner p) intersection_point p ; + b := (llcorner p -- lrcorner p) intersection_point p ; + r := if xpart directionpoint t of p < 0 : reverse p else : p fi ; % r is needed, else problems when reverse is fed + q := r cutbefore if l: t else: b fi ; + q := q if xpart point 0 of r > 0 : & r fi cutafter if l: b else: t fi ; + q +enddef ; + +vardef leftpath expr p = leftrightpath(p,true ) enddef ; +vardef rightpath expr p = leftrightpath(p,false) enddef ; + +%D Drawoptions + +def saveoptions = + save _op_ ; def _op_ = enddef ; +enddef ; + +%D Tracing. (not yet in lexer) + +let normaldraw = draw ; +let normalfill = fill ; + +% bugged in mplib so ... + +def normalfill expr c = addto currentpicture contour c _op_ enddef ; +def normaldraw expr p = addto currentpicture if picture p: also p else: doublepath p withpen currentpen fi _op_ enddef ; + +def drawlineoptions (text t) = def _lin_opt_ = t enddef ; enddef ; +def drawpointoptions (text t) = def _pnt_opt_ = t enddef ; enddef ; +def drawcontroloptions(text t) = def _ctr_opt_ = t enddef ; enddef ; +def drawlabeloptions (text t) = def _lab_opt_ = t enddef ; enddef ; +def draworiginoptions (text t) = def _ori_opt_ = t enddef ; enddef ; +def drawboundoptions (text t) = def _bnd_opt_ = t enddef ; enddef ; +def drawpathoptions (text t) = def _pth_opt_ = t enddef ; enddef ; + +numeric drawoptionsfactor ; drawoptionsfactor := pt ; + +def resetdrawoptions = + drawlineoptions (withpen pencircle scaled 1.0 drawoptionsfactor withcolor .5white) ; + drawpointoptions (withpen pencircle scaled 4.0 drawoptionsfactor withcolor black) ; + drawcontroloptions(withpen pencircle scaled 2.5 drawoptionsfactor withcolor black) ; + drawlabeloptions () ; + draworiginoptions (withpen pencircle scaled 1.0 drawoptionsfactor withcolor .5white) ; + drawboundoptions (dashed evenly _ori_opt_) ; + drawpathoptions (withpen pencircle scaled 5.0 drawoptionsfactor withcolor .8white) ; +enddef ; + +resetdrawoptions ; + +%D Path. + +def drawpath expr p = + normaldraw p _pth_opt_ +enddef ; + +%D Arrow. + +vardef drawarrowpath expr p = + save autoarrows ; boolean autoarrows ; autoarrows := true ; + drawarrow p _pth_opt_ +enddef ; + +def midarrowhead expr p = + arrowhead p cutafter (point length(p cutafter point .5 along p)+ahlength on p) +enddef ; + +vardef arrowheadonpath (expr p, s) = + save autoarrows ; boolean autoarrows ; + autoarrows := true ; + set_ahlength(scaled ahfactor) ; % added + arrowhead p if s<1 : cutafter (point (s*arclength(p)+.5ahlength) on p) fi +enddef ; + +%D Points. + +def drawpoint expr c = + if string c : + string _c_ ; + _c_ := "(" & c & ")" ; + dotlabel.urt(_c_, scantokens _c_) ; + drawdot scantokens _c_ + else : + dotlabel.urt("(" & decimal xpart c & "," & decimal ypart c & ")", c) ; + drawdot c + fi _pnt_opt_ +enddef ; + +%D PathPoints. + +def drawpoints expr c = path _c_ ; _c_ := c ; mfun_draw_points enddef ; +def drawcontrolpoints expr c = path _c_ ; _c_ := c ; mfun_draw_controlpoints enddef ; +def drawcontrollines expr c = path _c_ ; _c_ := c ; mfun_draw_controllines enddef ; +def drawpointlabels expr c = path _c_ ; _c_ := c ; mfun_draw_pointlabels enddef ; + +def mfun_draw_points text t = + for _i_=0 upto length(_c_) : + normaldraw point _i_ of _c_ _pnt_opt_ t ; + endfor ; +enddef; + +def mfun_draw_controlpoints text t = + for _i_=0 upto length(_c_) : + normaldraw precontrol _i_ of _c_ _ctr_opt_ t ; + normaldraw postcontrol _i_ of _c_ _ctr_opt_ t ; + endfor ; +enddef; + +def mfun_draw_controllines text t = + for _i_=0 upto length(_c_) : + normaldraw point _i_ of _c_ -- precontrol _i_ of _c_ _lin_opt_ t ; + normaldraw point _i_ of _c_ -- postcontrol _i_ of _c_ _lin_opt_ t ; + endfor ; +enddef; + +boolean swappointlabels ; swappointlabels := false ; +numeric pointlabelscale ; pointlabelscale := 0 ; +string pointlabelfont ; pointlabelfont := "" ; + +def mfun_draw_pointlabels text t = + for _i_=0 upto length(_c_) : + pair _u_ ; _u_ := unitvector(direction _i_ of _c_) rotated if swappointlabels : - fi 90 ; + pair _p_ ; _p_ := (point _i_ of _c_) ; + begingroup ; + if pointlabelscale > 0 : + save defaultscale ; numeric defaultscale ; + defaultscale := pointlabelscale ; + fi ; + if pointlabelfont <> "" : + save defaultfont ; string defaultfont ; + defaultfont := pointlabelfont ; + fi ; + _u_ := 10 * drawoptionsfactor * defaultscale * _u_ ; + normaldraw thelabel ( decimal _i_, _p_ shifted if cycle _c_ and (_i_=0) : - fi _u_ ) _lab_opt_ t ; + endgroup ; + endfor ; +enddef; + +%D Bounding box. + +def drawboundingbox expr p = + normaldraw boundingbox p _bnd_opt_ +enddef ; + +%D Origin. + +numeric originlength ; originlength := .5cm ; + +def draworigin text t = + normaldraw (origin shifted (0, originlength) -- origin shifted (0,-originlength)) _ori_opt_ t ; + normaldraw (origin shifted ( originlength,0) -- origin shifted (-originlength,0)) _ori_opt_ t ; +enddef; + +%D Axis. + +numeric tickstep ; tickstep := 5mm ; +numeric ticklength ; ticklength := 2mm ; + +def drawxticks expr c = path _c_ ; _c_ := c ; mfun_draw_xticks enddef ; +def drawyticks expr c = path _c_ ; _c_ := c ; mfun_draw_yticks enddef ; +def drawticks expr c = path _c_ ; _c_ := c ; mfun_draw_ticks enddef ; + +% Adding eps prevents disappearance due to rounding errors. + +def mfun_draw_xticks text t = + for i=0 step -tickstep until xpart llcorner _c_ - eps : + if (i<=xpart lrcorner _c_) : + normaldraw (i,-ticklength)--(i,ticklength) _ori_opt_ t ; + fi ; + endfor ; + for i=0 step tickstep until xpart lrcorner _c_ + eps : + if (i>=xpart llcorner _c_) : + normaldraw (i,-ticklength)--(i,ticklength) _ori_opt_ t ; + fi ; + endfor ; + normaldraw (llcorner _c_ -- ulcorner _c_) shifted (-xpart llcorner _c_,0) _ori_opt_ t ; +enddef ; + +def mfun_draw_yticks text t = + for i=0 step -tickstep until ypart llcorner _c_ - eps : + if (i<=ypart ulcorner _c_) : + normaldraw (-ticklength,i)--(ticklength,i) _ori_opt_ t ; + fi ; + endfor ; + for i=0 step tickstep until ypart ulcorner _c_ + eps : + if (i>=ypart llcorner _c_) : + normaldraw (-ticklength,i)--(ticklength,i) _ori_opt_ t ; + fi ; + endfor ; + normaldraw (llcorner _c_ -- lrcorner _c_) shifted (0,-ypart llcorner _c_) _ori_opt_ t ; +enddef ; + +def mfun_draw_ticks text t = + drawxticks _c_ t ; + drawyticks _c_ t ; +enddef ; + +%D All of it except axis. + +def drawwholepath expr p = + draworigin ; + drawpath p ; + drawcontrollines p ; + drawcontrolpoints p ; + drawpoints p ; + drawboundingbox p ; + drawpointlabels p ; +enddef ; + +def drawpathonly expr p = + drawpath p ; + drawcontrollines p ; + drawcontrolpoints p ; + drawpoints p ; + drawpointlabels p ; +enddef ; + +%D Tracing. + +def visualizeddraw expr c = + if picture c : normaldraw c else : path _c_ ; _c_ := c ; do_visualizeddraw fi +enddef ; + +def visualizedfill expr c = + if picture c : normalfill c else : path _c_ ; _c_ := c ; do_visualizedfill fi +enddef ; + +def do_visualizeddraw text t = + draworigin ; + drawpath _c_ t ; + drawcontrollines _c_ ; + drawcontrolpoints _c_ ; + drawpoints _c_ ; + drawboundingbox _c_ ; + drawpointlabels _c_ ; +enddef ; + +def do_visualizedfill text t = + if cycle _c_ : normalfill _c_ t fi ; + draworigin ; + drawcontrollines _c_ ; + drawcontrolpoints _c_ ; + drawpoints _c_ ; + drawboundingbox _c_ ; + drawpointlabels _c_ ; +enddef ; + +def detaileddraw expr c = + if picture c : normaldraw c else : path _c_ ; _c_ := c ; do_detaileddraw fi +enddef ; + +def do_detaileddraw text t = + drawpath _c_ t ; + drawcontrollines _c_ ; + drawcontrolpoints _c_ ; + drawpoints _c_ ; + % % for labels we need an third run (as the second will mark the numbers); i could preroll them + % % but then the hash needs to handle that as well (as now we keep numbering) + % drawpointlabels _c_ ; +enddef ; + +def visualizepaths = + let fill = visualizedfill ; + let draw = visualizeddraw ; +enddef ; + +def detailpaths = + let draw = detaileddraw ; +enddef ; + +def naturalizepaths = + let fill = normalfill ; + let draw = normaldraw ; +enddef ; + +extra_endfig := extra_endfig & " naturalizepaths ; " ; + +%D Nice tracer: + +def drawboundary primary p = + draw p dashed evenly withcolor white ; + draw p dashed oddly withcolor black ; + draw (- llcorner p) withpen pencircle scaled 3 withcolor white ; + draw (- llcorner p) withpen pencircle scaled 1.5 withcolor black ; +enddef ; + +%D Also handy: + +extra_beginfig := extra_beginfig & " truecorners := 0 ; " ; % restores +extra_beginfig := extra_beginfig & " miterlimit := 10 ; " ; % restores +extra_beginfig := extra_beginfig & " linejoin := rounded ; " ; % restores +extra_beginfig := extra_beginfig & " linecap := rounded ; " ; % restores + +%D Normally, arrowheads don't scale well. So we provide a +%D hack. + +boolean autoarrows ; autoarrows := false ; +numeric ahfactor ; ahfactor := 2.5 ; + +def set_ahlength (text t) = + % ahlength := (ahfactor*pen_size(_op_ t)) ; % _op_ added + % problem: _op_ can contain color so a no-go, we could apply the transform + % but i need to figure out the best way (fakepicture and take components). + ahlength := (ahfactor*pen_size(t)) ; +enddef ; + +vardef pen_size (text t) = + save p ; picture p ; p := nullpicture ; + addto p doublepath (top origin -- bot origin) t ; + (ypart urcorner p - ypart lrcorner p) +enddef ; + +%D The next two macros are adapted versions of plain +%D \METAPOST\ definitions. + +vardef arrowpath expr p = % patch by Peter Rolf: supports squared pen and shifting (hh: maybe just use center of head as first) + (p cutafter makepath(pencircle scaled 2(ahlength*cosd(.5ahangle)) shifted point length p of p)) +enddef; + +% def _finarr text t = +% if autoarrows : set_ahlength (t) fi ; +% draw arrowpath _apth t ; % arrowpath added +% filldraw arrowhead _apth t ; +% enddef; + +def _finarr text t = + if autoarrows : set_ahlength (t) fi ; + draw arrowpath _apth t ; % arrowpath added + fill arrowhead _apth t ; + draw arrowhead _apth t ; +enddef; + +def _finarr text t = + if autoarrows : set_ahlength (t) fi ; + draw arrowpath _apth t ; % arrowpath added + fill arrowhead _apth t ; + draw arrowhead _apth t undashed ; +enddef; + +%D Handy too ...... + +vardef pointarrow (expr pat, loc, len, off) = + save l, r, s, t ; path l, r ; numeric s ; pair t ; + t := if pair loc : loc else : point loc along pat fi ; + s := len/2 - off ; if s<=0 : s := 0 elseif s>len : s := len fi ; + r := pat cutbefore t ; + r := (r cutafter point (arctime s of r) of r) ; + s := len/2 + off ; if s<=0 : s := 0 elseif s>len : s := len fi ; + l := reverse (pat cutafter t) ; + l := (reverse (l cutafter point (arctime s of l) of l)) ; + (l..r) +enddef ; + +def rightarrow (expr pat,tim,len) = pointarrow(pat,tim,len,-len) enddef ; +def leftarrow (expr pat,tim,len) = pointarrow(pat,tim,len,+len) enddef ; +def centerarrow (expr pat,tim,len) = pointarrow(pat,tim,len, 0) enddef ; + +%D The \type {along} and \type {on} operators can be used +%D as follows: +%D +%D \starttyping +%D drawdot point .5 along somepath ; +%D drawdot point 3cm on somepath ; +%D \stoptyping +%D +%D The number denotes a percentage (fraction). + +primarydef pct along pat = % also negative + (arctime (pct * (arclength pat)) of pat) of pat +enddef ; + +primarydef len on pat = % no outer ( ) .. somehow fails + (arctime if len>=0 : len else : (arclength(pat)+len) fi of pat) of pat +enddef ; + +% this cuts of a piece from both ends + +tertiarydef pat cutends len = + begingroup + save tap ; path tap ; + tap := pat cutbefore (point (xpart paired(len)) on pat) ; + (tap cutafter (point -(ypart paired(len)) on tap)) + endgroup +enddef ; + +%D To be documented. + +path freesquare ; + +freesquare := ( + (-1,0) -- (-1,-1) -- (0,-1) -- (+1,-1) -- + (+1,0) -- (+1,+1) -- (0,+1) -- (-1,+1) -- cycle +) scaled .5 ; + +numeric freelabeloffset ; freelabeloffset := 3pt ; +numeric freedotlabelsize ; freedotlabelsize := 3pt ; + +vardef thefreelabel (expr str, loc, ori) = + save s, p, q, l ; picture s ; path p, q ; pair l ; + interim labeloffset := freelabeloffset ; + s := if string str : thelabel(str,loc) else : str shifted -center str shifted loc fi ; + setbounds s to boundingbox s enlarged freelabeloffset ; + p := fullcircle scaled (2*length(loc-ori)) shifted ori ; + q := freesquare xyscaled (urcorner s - llcorner s) ; + l := point xpart (p intersectiontimes (ori--loc shifted (loc-ori))) of q ; + setbounds s to boundingbox s enlarged -freelabeloffset ; % new + % draw boundingbox s shifted -l withpen pencircle scaled .5pt withcolor red ; + (s shifted -l) +enddef ; + +vardef freelabel (expr str, loc, ori) = + draw thefreelabel(str,loc,ori) ; +enddef ; + +vardef freedotlabel (expr str, loc, ori) = + interim linecap := rounded ; + draw loc withpen pencircle scaled freedotlabelsize ; + draw thefreelabel(str,loc,ori) ; +enddef ; + +%D \starttyping +%D drawarrow anglebetween(line_a,line_b,somelabel) ; +%D \stoptyping + +newinternal angleoffset ; angleoffset := 0pt ; +newinternal anglelength ; anglelength := 20pt ; +newinternal anglemethod ; anglemethod := 1 ; + +vardef anglebetween (expr a, b, str) = % path path string + save pointa, pointb, common, middle, offset ; + pair pointa, pointb, common, middle, offset ; + save curve ; path curve ; + save where ; numeric where ; + if round point 0 of a = round point 0 of b : + common := point 0 of a ; + else : + common := a intersectionpoint b ; + fi ; + pointa := point anglelength on a ; + pointb := point anglelength on b ; + where := turningnumber (common--pointa--pointb--cycle) ; + middle := (reverse(common--pointa) rotatedaround (pointa,-where*90)) + intersection_point + (reverse(common--pointb) rotatedaround (pointb, where*90)) ; + if not intersection_found : + middle := point .5 along + ((reverse(common--pointa) rotatedaround (pointa,-where*90)) -- + ( (common--pointb) rotatedaround (pointb, where*90))) ; + fi ; + if anglemethod = 0 : + curve := pointa{unitvector(middle-pointa)}.. pointb; + middle := point .5 along curve ; + curve := common ; + elseif anglemethod = 1 : + curve := pointa{unitvector(middle-pointa)}.. pointb; + middle := point .5 along curve ; + elseif anglemethod = 2 : + middle := common rotatedaround(.5[pointa,pointb],180) ; + curve := pointa--middle--pointb ; + elseif anglemethod = 3 : + curve := pointa--middle--pointb ; + elseif anglemethod = 4 : + curve := pointa..controls middle..pointb ; + middle := point .5 along curve ; + fi ; + draw thefreelabel(str, middle, common) ; % withcolor black ; + curve +enddef ; + +% Stack + +picture mfun_current_picture_stack[] ; +numeric mfun_current_picture_depth ; + +mfun_current_picture_depth := 0 ; + +def pushcurrentpicture = + mfun_current_picture_depth := mfun_current_picture_depth + 1 ; + mfun_current_picture_stack[mfun_current_picture_depth] := currentpicture ; + currentpicture := nullpicture ; +enddef ; + +def popcurrentpicture text t = % optional text + if mfun_current_picture_depth > 0 : + addto mfun_current_picture_stack[mfun_current_picture_depth] also currentpicture t ; + currentpicture := mfun_current_picture_stack[mfun_current_picture_depth] ; + mfun_current_picture_stack[mfun_current_picture_depth] := nullpicture ; + mfun_current_picture_depth := mfun_current_picture_depth - 1 ; + fi ; +enddef ; + +%D colorcircle(size, red, green, blue) ; + +vardef colorcircle (expr size, red, green, blue) = % might move + save r, g, b, c, m, y, w ; save radius ; + path r, g, b, c, m, y, w ; numeric radius ; + + radius := 5cm ; pickup pencircle scaled (radius/25) ; + + transform t ; t := identity rotatedaround(origin,120) ; + + r := fullcircle rotated 90 scaled radius shifted (0,radius/4) rotatedaround(origin,135) ; + + b := r transformed t ; g := b transformed t ; + + c := buildcycle(subpath(1,7) of g,subpath(1,7) of b) ; + y := c transformed t ; m := y transformed t ; + + w := buildcycle(subpath(3,5) of r, subpath(3,5) of g,subpath(3,5) of b) ; + + pushcurrentpicture ; + + fill r withcolor red ; + fill g withcolor green ; + fill b withcolor blue ; + fill c withcolor white - red ; + fill m withcolor white - green ; + fill y withcolor white - blue ; + fill w withcolor white ; + + for i = r,g,b,c,m,y : draw i withcolor .5white ; endfor ; + + currentpicture := currentpicture xsized size ; + + popcurrentpicture ; +enddef ; + +% penpoint (i,2) of somepath -> inner / outer point + +vardef penpoint expr pnt of p = + save n, d ; numeric n, d ; + (n,d) = if pair pnt : pnt else : (pnt,1) fi ; + (point n of p shifted ((penoffset direction n of p of currentpen) scaled d)) +enddef ; + +% nice: currentpicture := inverted currentpicture ; + +primarydef p uncolored c = + if color p : + c - p + else : + image ( + for i within p : + addto currentpicture + if stroked i or filled i : + if filled i : + contour + else : + doublepath + fi + pathpart i + dashed dashpart i withpen penpart i + else : + also i + fi + withcolor c-(redpart i, greenpart i, bluepart i) ; + endfor ; + ) + fi +enddef ; + +vardef inverted primary p = + p uncolored white +enddef ; + +primarydef p softened c = + begingroup + save cc ; color cc ; cc := tripled(c) ; + if color p : + (redpart cc * redpart p,greenpart cc * greenpart p, bluepart cc * bluepart p) + else : + image ( + for i within p : + addto currentpicture + if stroked i or filled i : + if filled i : + contour + else : + doublepath + fi + pathpart i + dashed dashpart i withpen penpart i + else : + also i + fi + withcolor (redpart cc * redpart i, greenpart cc * greenpart i, bluepart cc * bluepart i) ; + endfor ; + ) + fi + endgroup +enddef ; + +vardef grayed primary p = + if rgbcolor p : + tripled(.30redpart p+.59greenpart p+.11bluepart p) + elseif cmykcolor p : + tripled(.30*(1-cyanpart i)+.59*(1-magentapart i)+.11*(1-yellowpart i)+blackpart i) + elseif greycolor p : + p + elseif picture p : + image ( + for i within p : + addto currentpicture + if stroked i or filled i : + if filled i : + contour + else : + doublepath + fi + pathpart i + dashed dashpart i + withpen penpart i + else : + also i + fi + if unknown colorpart i : + % nothing + elseif rgbcolor colorpart i : + withcolor tripled(.30redpart i+.59greenpart i+.11bluepart i) ; + elseif cmykcolor colorpart i : + withcolor tripled(.30*(1-cyanpart i)+.59*(1-magentapart i)+.11*(1-yellowpart i)+blackpart i) ; + else : + withcolor colorpart i ; + fi + endfor ; + ) + else : + p + fi +enddef ; + +let greyed = grayed ; + +% yes or no: "text" infont "cmr12" at 24pt ; + +% let normalinfont = infont ; +% +% numeric lastfontsize ; lastfontsize = fontsize defaultfont ; +% +% def infont primary name = % no vardef, no expr +% hide(lastfontsize := fontsize name) % no ; +% normalinfont name +% enddef ; +% +% def scaledat expr size = +% scaled (size/lastfontsize) +% enddef ; +% +% let at = scaledat ; + +% like decimal + +def condition primary b = if b : "true" else : "false" fi enddef ; + +% undocumented + +primarydef p stretched s = + begingroup + save pp ; path pp ; pp := p xyscaled s ; + (pp shifted ((point 0 of p) - (point 0 of pp))) + endgroup +enddef ; + +primarydef p enlonged len = + begingroup + if pair p : + save q ; path q ; q := origin -- p ; + save al ; al := arclength(q) ; + if al > 0 : + point 1 of (q stretched ((al+len)/al)) + else : + p + fi + else : + save al ; al := arclength(p) ; + if al > 0 : + p stretched ((al+len)/al) + else : + p + fi + fi + endgroup +enddef ; + +% path p ; p := (0,0) -- (10cm,5cm) ; +% drawarrow p withcolor red ; +% drawarrow p shortened 1cm withcolor green ; + +primarydef p shortened d = + reverse ( ( reverse (p enlonged -d) ) enlonged -d ) +enddef ; + +% yes or no, untested -) + +def xshifted expr dx = shifted(dx,0) enddef ; +def yshifted expr dy = shifted(0,dy) enddef ; + +% also handy + +% right: str = readfrom ("abc" & ".def" ) ; +% wrong: str = readfrom "abc" & ".def" ; + +% Every 62th read fails so we need to try again! + +% def readfile (expr name) = +% if (readfrom (name) <> EOF) : +% scantokens("input " & name & ";") ; +% elseif (readfrom (name) <> EOF) : +% scantokens("input " & name & ";") ; +% fi ; +% closefrom (name) ; +% enddef ; +% +% this sometimes fails on the elseif, so : +% + +def readfile (expr name) = + begingroup ; save ok ; boolean ok ; + if (readfrom (name) <> EOF) : + ok := false ; + elseif (readfrom (name) <> EOF) : + ok := false ; + else : + ok := true ; + fi ; + if not ok : + scantokens("input " & name & " ") ; + fi ; + closefrom (name) ; + endgroup ; +enddef ; + +% permits redefinition of end in macro + +inner end ; + +% this will be redone (when needed) using scripts and backend handling + +let normalwithcolor = withcolor ; + +def remapcolors = + def withcolor primary c = normalwithcolor remappedcolor(c) enddef ; +enddef ; + +def normalcolors = + let withcolor = normalwithcolor ; +enddef ; + +def resetcolormap = + color color_map[][][] ; + normalcolors ; +enddef ; + +resetcolormap ; + +def r_color primary c = redpart c enddef ; +def g_color primary c = greenpart c enddef ; +def b_color primary c = bluepart c enddef ; + +def remapcolor(expr old, new) = + color_map[redpart old][greenpart old][bluepart old] := new ; +enddef ; + +def remappedcolor(expr c) = + if known color_map[redpart c][greenpart c][bluepart c] : + color_map[redpart c][greenpart c][bluepart c] + else : + c + fi +enddef ; + +% Thanks to Jens-Uwe Morawski for pointing out that we need +% to treat bounded and clipped components as local pictures. + +def recolor suffix p = p := repathed (0,p) enddef ; +def refill suffix p = p := repathed (1,p) enddef ; +def redraw suffix p = p := repathed (2,p) enddef ; +def retext suffix p = p := repathed (3,p) enddef ; +def untext suffix p = p := repathed (4,p) enddef ; + +% primarydef p recolored t = repathed(0,p) t enddef ; +% primarydef p refilled t = repathed(1,p) t enddef ; +% primarydef p redrawn t = repathed(2,p) t enddef ; +% primarydef p retexted t = repathed(3,p) t enddef ; +% primarydef p untexted t = repathed(4,p) t enddef ; + +color refillbackground ; refillbackground := (1,1,1) ; + +def restroke suffix p = p := repathed (21,p) enddef ; % keep attributes +def reprocess suffix p = p := repathed (22,p) enddef ; % no attributes + +% also 11 and 12 + +vardef repathed (expr mode, p) text t = + begingroup ; + if mode = 0 : + save withcolor ; + remapcolors ; + fi ; + save _p_, _pp_, _ppp_, _f_, _b_, _t_ ; + picture _p_, _pp_, _ppp_ ; color _f_ ; path _b_ ; transform _t_ ; + _b_ := boundingbox p ; + _p_ := nullpicture ; + for i within p : + _f_ := (redpart i, greenpart i, bluepart i) ; + if bounded i : + _pp_ := repathed(mode,i) t ; + setbounds _pp_ to pathpart i ; + addto _p_ also _pp_ ; + elseif clipped i : + _pp_ := repathed(mode,i) t ; + clip _pp_ to pathpart i ; + addto _p_ also _pp_ ; + elseif stroked i : + if mode=21 : + _ppp_ := i ; % indirectness is needed + addto _p_ also image(scantokens(t & " pathpart _ppp_") + dashed dashpart i withpen penpart i + withcolor _f_ ; ) ; + elseif mode=22 : + _ppp_ := i ; % indirectness is needed + addto _p_ also image(scantokens(t & " pathpart _ppp_")) ; + else : + addto _p_ doublepath pathpart i + dashed dashpart i withpen penpart i + withcolor _f_ % (redpart i, greenpart i, bluepart i) + if mode = 2 : + t + fi ; + fi ; + elseif filled i : + if mode=11 : + _ppp_ := i ; % indirectness is needed + addto _p_ also image(scantokens(t & " pathpart _ppp_") + withcolor _f_ ; ) ; + elseif mode=12 : + _ppp_ := i ; % indirectness is needed + addto _p_ also image(scantokens(t & " pathpart _ppp_")) ; + else : + addto _p_ contour pathpart i + withcolor _f_ + if (mode=1) and (_f_<>refillbackground) : + t + fi ; + fi ; + elseif textual i : % textpart i <> "" : + if mode <> 4 : + % transform _t_ ; + % (xpart _t_, xxpart _t_, xypart _t_) = (xpart i, xxpart i, xypart i) ; + % (ypart _t_, yypart _t_, yxpart _t_) = (ypart i, yypart i, yxpart i) ; + % addto _p_ also + % textpart i infont fontpart i % todo : other font + % transformed _t_ + % withpen penpart i + % withcolor _f_ + % if mode=3 : t fi ; + addto _p_ also i + if mode=3 : + t + fi ; + fi ; + else : + addto _p_ also i ; + fi ; + endfor ; + setbounds _p_ to _b_ ; + _p_ + endgroup +enddef ; + +% After a question of Denis on how to erase a z variable, Jacko +% suggested to assign whatever to x and y. So a clearz +% variable can be defined as: +% +% vardef clearz@# = +% x@# := whatever ; +% y@# := whatever ; +% enddef ; +% +% but Jacko suggested a redefinition of clearxy: +% +% def clearxy text s = +% clearxy_index_:=0; +% for $:=s: +% clearxy_index_:=clearxy_index_+1; endfor; +% if clearxy_index_=0: +% save x,y; +% else: +% forsuffixes $:=s: x$:=whatever; y$:=whatever; endfor; +% fi +% enddef; +% +% which i decided to simplify to: + +def clearxy text s = + if false for $ := s : or true endfor : + forsuffixes $ := s : x$ := whatever ; y$ := whatever ; endfor ; + else : + save x, y ; + fi +enddef ; + +% so now we can say: clearxy ; as well as clearxy 1, 2, 3 ; + +% show x0 ; z0 = (10,10) ; +% show x0 ; x0 := whatever ; y0 := whatever ; +% show x0 ; z0 = (20,20) ; +% show x0 ; clearxy 0 ; +% show x0 ; z0 = (30,30) ; + +primarydef p smoothed d = + (p llmoved (-xpart paired(d),0) -- p lrmoved (-xpart paired(d),0) {right} .. + p lrmoved (0,-ypart paired(d)) -- p urmoved (0,-ypart paired(d)) {up} .. + p urmoved (-xpart paired(d),0) -- p ulmoved (-xpart paired(d),0) {left} .. + p ulmoved (0,-ypart paired(d)) -- p llmoved (0,-ypart paired(d)) {down} .. cycle) +enddef ; + +primarydef p cornered c = + ((point 0 of p) shifted (c*(unitvector(point 1 of p - point 0 of p))) -- + for i=1 upto length(p) : + (point i-1 of p) shifted (c*(unitvector(point i of p - point i-1 of p))) -- + (point i of p) shifted (c*(unitvector(point i-1 of p - point i of p))) .. + controls point i of p .. + endfor cycle) +enddef ; + +% cmyk color support + +% vardef cmyk(expr c,m,y,k) = % elsewhere +% (1-c-k,1-m-k,1-y-k) +% enddef ; + +% handy + +% vardef bbwidth (expr p) = % vardef width_of primary p = +% if known p : +% if path p or picture p : +% xpart (lrcorner p - llcorner p) +% else : +% 0 +% fi +% else : +% 0 +% fi +% enddef ; + +vardef bbwidth primary p = + if unknown p : + 0 + elseif path p or picture p : + xpart (lrcorner p - llcorner p) + else : + 0 + fi +enddef ; + +% vardef bbheight (expr p) = % vardef heigth_of primary p = +% if known p : +% if path p or picture p : +% ypart (urcorner p - lrcorner p) +% else : +% 0 +% fi +% else : +% 0 +% fi +% enddef ; + +vardef bbheight primary p = + if unknown p : + 0 + elseif path p or picture p : + ypart (urcorner p - lrcorner p) + else : + 0 + fi +enddef ; + +color nocolor ; numeric noline ; % both unknown signals + +def dowithpath (expr p, lw, lc, bc) = + if known p : + if known bc : + fill p withcolor bc ; + fi ; + if known lw and known lc : + draw p withpen pencircle scaled lw withcolor lc ; + elseif known lw : + draw p withpen pencircle scaled lw ; + elseif known lc : + draw p withcolor lc ; + fi ; + fi ; +enddef ; + +% result from metafont discussion list (denisr/boguslawj) + +def [[ = [ [ enddef ; def [[[ = [ [ [ enddef ; +def ]] = ] ] enddef ; def ]]] = ] ] ] enddef ; + +let == = = ; + +% added + +picture oddly ; % evenly already defined + +evenly := dashpattern(on 3 off 3) ; +oddly := dashpattern(off 3 on 3) ; + +% not perfect, but useful since it removes redundant points. + +vardef mfun_straightened(expr sign, p) = + save _p_, _q_ ; path _p_, _q_ ; + _p_ := p ; + forever : + _q_ := mfun_do_straightened(sign, _p_) ; + exitif length(_p_) = length(_q_) ; + _p_ := _q_ ; + endfor ; + _q_ +enddef ; + +vardef mfun_do_straightened(expr sign, p) = + if length(p)>2 : % was 1, but straight lines are ok + save pp ; path pp ; + pp := point 0 of p ; + for i=1 upto length(p)-1 : + if round(point i of p) <> round(point length(pp) of pp) : + pp := pp -- point i of p ; + fi ; + endfor ; + save n, ok ; numeric n ; boolean ok ; + n := length(pp) ; ok := false ; + if n>2 : + for i=0 upto n : % evt hier ook round + if unitvector(round(point i of pp - point if i=0 : n else : i-1 fi of pp)) <> + sign * unitvector(round(point if i=n : 0 else : i+1 fi of pp - point i of pp)) : + if ok : + -- + else : + ok := true ; + fi point i of pp + fi + endfor + if ok and (cycle p) : + -- cycle + fi + else : + pp + fi + else : + p + fi +enddef ; + +vardef simplified expr p = ( + reverse mfun_straightened(+1,mfun_straightened(+1,reverse p)) +) enddef ; + +vardef unspiked expr p = ( + reverse mfun_straightened(-1,mfun_straightened(-1,reverse p)) +) enddef ; + +% path p ; +% p := (2cm,1cm) -- (2cm,1cm) -- (2cm,1cm) -- (3cm,1cm) -- +% (4cm,1cm) -- (4cm,2cm) -- (4cm,2.5cm) -- (4cm,3cm) -- +% (3cm,3cm) -- (2cm,3cm) -- (1cm,3cm) -- (-1cm,3cm) -- +% .5[(-1cm,3cm),(1cm,1cm)] -- (1cm,1cm) -- cycle ; +% +% p := unitcircle scaled 4cm ; +% +% drawpath p ; drawpoints p ; drawpointlabels p ; +% p := p shifted (4cm,0) ; p := straightened p ; +% drawpath p ; drawpoints p ; drawpointlabels p ; +% p := p shifted (4cm,0) ; p := straightened p ; +% drawpath p ; drawpoints p ; drawpointlabels p ; + +% new + +path originpath ; originpath := origin -- cycle ; + +vardef unitvector primary z = + if abs z = abs origin : z else : z/abs z fi +enddef; + +% also new + +% vardef anchored@#(expr p, z) = % maybe use the textext variant +% p shifted (z + (labxf@#*lrcorner p + labyf@#*ulcorner p + (1-labxf@#-labyf@#)*llcorner p)) +% enddef ; + +% epsed(1.2345) + +vardef epsed (expr e) = + e if e>0 : + eps elseif e<0 : - eps fi +enddef ; + +% handy + +def withgray primary g = + withcolor g +enddef ; + +% for metafun + +if unknown darkred : color darkred ; darkred := .625(1,0,0) fi ; +if unknown darkgreen : color darkgreen ; darkgreen := .625(0,1,0) fi ; +if unknown darkblue : color darkblue ; darkblue := .625(0,0,1) fi ; +if unknown darkcyan : color darkcyan ; darkcyan := .625(0,1,1) fi ; +if unknown darkmagenta : color darkmagenta ; darkmagenta := .625(1,0,1) fi ; +if unknown darkyellow : color darkyellow ; darkyellow := .625(1,1,0) fi ; +if unknown darkgray : color darkgray ; darkgray := .625(1,1,1) fi ; +if unknown lightgray : color lightgray ; lightgray := .875(1,1,1) fi ; + +% an improved plain mp macro + +vardef center primary p = + if pair p : + p + else : + .5[llcorner p, urcorner p] + fi +enddef; + +% new, yet undocumented + +vardef rangepath (expr p, d, a) = + if length p>0 : + (d*unitvector(direction 0 of p) rotated a) shifted point 0 of p + -- p -- + (d*unitvector(direction length(p) of p) rotated a) shifted point length(p) of p + else : + p + fi +enddef ; + +% under construction + +vardef straightpath (expr a, b, method) = + if (method<1) or (method>6) : + (a--b) + elseif method = 1 : + (a -- + if xpart a > xpart b : + if ypart a > ypart b : + (xpart b,ypart a) -- + elseif ypart a < ypart b : + (xpart a,ypart b) -- + fi + elseif xpart a < xpart b : + if ypart a > ypart b : + (xpart a,ypart b) -- + elseif ypart a < ypart b : + (xpart b,ypart a) -- + fi + fi + b) + elseif method = 3 : + (a -- + if xpart a > xpart b : + (xpart b,ypart a) -- + elseif xpart a < xpart b : + (xpart a,ypart b) -- + fi + b) + elseif method = 5 : + (a -- + if ypart a > ypart b : + (xpart b,ypart a) -- + elseif ypart a < ypart b : + (xpart a,ypart b) -- + fi + b) + else : + (reverse straightpath(b,a,method-1)) + fi +enddef ; + +% handy for myself + +def addbackground text t = + begingroup ; + save p, b ; picture p ; path b ; + b := boundingbox currentpicture ; + p := currentpicture ; currentpicture := nullpicture ; + fill b t ; + setbounds currentpicture to b ; + addto currentpicture also p ; + endgroup ; +enddef ; + +% makes a (line) into an infinite one (handy for calculating +% intersection points + +vardef infinite expr p = + (-infinity*unitvector(direction 0 of p) + shifted point 0 of p + -- p -- + +infinity*unitvector(direction length(p) of p) + shifted point length(p) of p) +enddef ; + +% obscure macros: create var from string and replace - and : +% (needed for process color id's) .. will go away + +string mfun_clean_ascii[] ; + +def register_dirty_chars(expr str) = + for i = 0 upto length(str)-1 : + mfun_clean_ascii[ASCII substring(i,i+1) of str] := "_" ; + endfor ; +enddef ; + +register_dirty_chars("+-*/:;., ") ; + +vardef cleanstring (expr s) = + save ss ; string ss, si ; ss = "" ; save i ; + for i=0 upto length(s) : + si := substring(i,i+1) of s ; + ss := ss & if known mfun_clean_ascii[ASCII si] : mfun_clean_ascii[ASCII si] else : si fi ; + endfor ; + ss +enddef ; + +vardef asciistring (expr s) = + save ss ; string ss, si ; ss = "" ; save i ; + for i=0 upto length(s) : + si := substring(i,i+1) of s ; + if (ASCII si >= ASCII "0") and (ASCII si <= ASCII "9") : + ss := ss & char(scantokens(si) + ASCII "A") ; + else : + ss := ss & si ; + fi ; + endfor ; + ss +enddef ; + +vardef setunstringed (expr s, v) = + scantokens(cleanstring(s)) := v ; +enddef ; + +vardef getunstringed (expr s) = + scantokens(cleanstring(s)) +enddef ; + +vardef unstringed (expr s) = + expandafter known scantokens(cleanstring(s)) +enddef ; + +% for david arnold: + +% showgrid(-5,10,1cm,-10,10,1cm); + +def showgrid (expr MinX, MaxX, DeltaX, MinY, MaxY, DeltaY) = % will move + begingroup + save size ; numeric size ; size := 2pt ; + for x=MinX upto MaxX : + for y=MinY upto MaxY : + draw (x*DeltaX, y*DeltaY) withpen pencircle scaled + if (x mod 5 = 0) and (y mod 5 = 0) : + 1.5size withcolor .50white + else : + size withcolor .75white + fi ; + endfor ; + endfor ; + for x=MinX upto MaxX: + label.bot(textext("\infofont " & decimal x), (x*DeltaX,-size)) ; + endfor ; + for y=MinY upto MaxY: + label.lft(textext("\infofont " & decimal y), (-size,y*DeltaY)) ; + endfor ; + endgroup +enddef; + +% new, handy for: +% +% \startuseMPgraphic{map}{n} +% \includeMPgraphic{map:germany} ; +% c_phantom (\MPvar{n}<1) ( +% fill map_germany withcolor \MPcolor{lightgray} ; +% draw map_germany withpen pencircle scaled 1pt withcolor \MPcolor{darkgray} ; +% ) ; +% \includeMPgraphic{map:austria} ; +% c_phantom (\MPvar{n}<2) ( +% fill map_austria withcolor \MPcolor{lightgray} ; +% draw map_austria withpen pencircle scaled 1pt withcolor \MPcolor{darkgray} ; +% ) ; +% c_phantom (\MPvar{n}<3) ( +% \includeMPgraphic{map:swiss} ; +% fill map_swiss withcolor \MPcolor{lightgray} ; +% draw map_swiss withpen pencircle scaled 1pt withcolor \MPcolor{darkgray} ; +% ) ; +% c_phantom (\MPvar{n}<4) ( +% \includeMPgraphic{map:luxembourg} ; +% fill map_luxembourg withcolor \MPcolor{lightgray} ; +% draw map_luxembourg withpen pencircle scaled 1pt withcolor \MPcolor{darkgray} ; +% ) ; +% \stopuseMPgraphic +% +% \useMPgraphic{map}{n=3} + +vardef phantom (text t) = % to be checked + picture _p_ ; + _p_ := image(t) ; + addto _p_ also currentpicture ; + setbounds currentpicture to boundingbox _p_ ; +enddef ; + +vardef c_phantom (expr b) (text t) = + if b : + picture _p_ ; + _p_ := image(t) ; + addto _p_ also currentpicture ; + setbounds currentpicture to boundingbox _p_ ; + else : + t ; + fi ; +enddef ; + +%D Handy: + +def break = + exitif true ; % fi +enddef ; + +%D New too: + +primarydef p xstretched w = ( + p if (bbwidth (p)>0) and (w>0) : xscaled (w/bbwidth (p)) fi +) enddef ; + +primarydef p ystretched h = ( + p if (bbheight(p)>0) and (h>0) : yscaled (h/bbheight(p)) fi +) enddef ; + +%D Newer: + +vardef area expr p = + % we could calculate the boundingbox once + (xpart llcorner boundingbox p,0) -- p -- + (xpart lrcorner boundingbox p,0) -- cycle +enddef ; + +vardef basiccolors[] = + if @ = 0 : + white + else : + save n ; n := @ mod 7 ; + if n = 1 : red + elseif n = 2 : green + elseif n = 3 : blue + elseif n = 4 : cyan + elseif n = 5 : magenta + elseif n = 6 : yellow + else : black + fi + fi +enddef ; + + +% vardef somecolor = (1,1,0,0) enddef ; + +% fill OverlayBox withcolor (rcomponent somecolor,gcomponent somecolor,bcomponent somecolor) ; +% fill OverlayBox withcolor (ccomponent somecolor,mcomponent somecolor,ycomponent somecolor,bcomponent somecolor) ; + +% This could be standard mplib 2 behaviour: + +vardef rcomponent expr p = if rgbcolor p : redpart p elseif cmykcolor p : 1 - cyanpart p else : p fi enddef ; +vardef gcomponent expr p = if rgbcolor p : greenpart p elseif cmykcolor p : 1 - magentapart p else : p fi enddef ; +vardef bcomponent expr p = if rgbcolor p : bluepart p elseif cmykcolor p : 1 - yellowpart p else : p fi enddef ; +vardef ccomponent expr p = if cmykcolor p : cyanpart p elseif rgbcolor p : 1 - redpart p else : p fi enddef ; +vardef mcomponent expr p = if cmykcolor p : magentapart p elseif rgbcolor p : 1 - greenpart p else : p fi enddef ; +vardef ycomponent expr p = if cmykcolor p : yellowpart p elseif rgbcolor p : 1 - bluepart p else : p fi enddef ; +vardef bcomponent expr p = if cmykcolor p : blackpart p elseif rgbcolor p : 0 else : p fi enddef ; + +% draw image (...) ... ; % prescripts prepended to first, postscripts appended to last +% draw decorated (...) ... ; % prescripts prepended to each, postscripts appended to each +% draw redecorated (...) ... ; % prescripts assigned to each, postscripts assigned to each +% draw undecorated (...) ... ; % following properties are ignored, existing properties are kept +% +% draw decorated ( +% draw fullcircle scaled 20cm withpen pencircle scaled 20mm withcolor red withtransparency (1,.40) ; +% draw fullcircle scaled 15cm withpen pencircle scaled 15mm withcolor green withtransparency (1,.30) ; +% draw fullcircle scaled 10cm withpen pencircle scaled 10mm withcolor blue withtransparency (1,.20) ; +% ) +% withcolor blue +% withtransparency (1,.125) % selectively applied +% withpen pencircle scaled 10mm +% ; + +% vardef image (text imagedata) = % already defined +% save currentpicture ; +% picture currentpicture ; +% currentpicture := nullpicture ; +% imagedata ; +% currentpicture +% enddef ; + +vardef undecorated (text imagedata) text decoration = + save currentpicture ; + picture currentpicture ; + currentpicture := nullpicture ; + imagedata ; + currentpicture +enddef ; + +if metapostversion < 1.770 : + + vardef decorated (text imagedata) text decoration = + save mfun_decorated_path, currentpicture ; + picture mfun_decorated_path, currentpicture ; + currentpicture := nullpicture ; + imagedata ; + mfun_decorated_path := currentpicture ; + currentpicture := nullpicture ; + for i within mfun_decorated_path : + addto currentpicture + if stroked i : + doublepath pathpart i + dashed dashpart i + withpen penpart i + withcolor colorpart i + decoration + elseif filled i : + contour pathpart i + withpen penpart i + withcolor colorpart i + decoration + elseif textual i : + also i + withcolor colorpart i + decoration + else : + also i + fi + ; + endfor ; + currentpicture + enddef ; + +else: + + vardef decorated (text imagedata) text decoration = + save mfun_decorated_path, currentpicture ; + picture mfun_decorated_path, currentpicture ; + currentpicture := nullpicture ; + imagedata ; + mfun_decorated_path := currentpicture ; + currentpicture := nullpicture ; + for i within mfun_decorated_path : + addto currentpicture + if stroked i : + doublepath pathpart i + dashed dashpart i + withpen penpart i + withcolor colorpart i + withprescript prescriptpart i + withpostscript postscriptpart i + decoration + elseif filled i : + contour pathpart i + withpen penpart i + withcolor colorpart i + withprescript prescriptpart i + withpostscript postscriptpart i + decoration + elseif textual i : + also i + withcolor colorpart i + withprescript prescriptpart i + withpostscript postscriptpart i + decoration + else : + also i + fi + ; + endfor ; + currentpicture + enddef ; + +fi ; + +vardef redecorated (text imagedata) text decoration = + save mfun_decorated_path, currentpicture ; + picture mfun_decorated_path, currentpicture ; + currentpicture := nullpicture ; + imagedata ; + mfun_decorated_path := currentpicture ; + currentpicture := nullpicture ; + for i within mfun_decorated_path : + addto currentpicture + if stroked i : + doublepath pathpart i + dashed dashpart i + withpen penpart i + decoration + elseif filled i : + contour pathpart i + withpen penpart i + decoration + elseif textual i : + also i + decoration + else : + also i + fi + ; + endfor ; + currentpicture +enddef ; + +% path mfun_bleed_box ; + +% primarydef p bleeded d = +% image ( +% mfun_bleed_box := boundingbox p ; +% if pair d : +% draw p xysized (bbwidth(p)+2*xpart d,bbheight(p)+2*ypart d) shifted -d ; +% else : +% draw p xysized (bbwidth(p)+2d,bbheight(p)+2d) shifted (-d,-d) ; +% fi ; +% setbounds currentpicture to mfun_bleed_box ; +% ) +% enddef ; + +vardef mfun_snapped(expr p, s) = + if p < 0 : - ( - else : ( fi p div s) * s % the less tokens the better +enddef ; + +vardef mfun_applied(expr p, s)(suffix a) = + if path p : + if pair s : + for i=0 upto length(p)-1 : + (a(xpart point i of p,xpart s),a(ypart point i of p,ypart s)) -- + endfor + if cycle p : + cycle + else : + (a(xpart point length(p) of p,xpart s),a(ypart point length(p) of p,ypart s)) + fi + else : + for i=0 upto length(p)-1 : + (a(xpart point i of p,s),a(ypart point i of p,s)) -- + endfor + if cycle p : + cycle + else : + (a(xpart point length(p) of p,s),a(ypart point length(p) of p,s)) + fi + fi + elseif pair p : + if pair s : + (a(xpart p,xpart s),a(ypart p,ypart s)) + else : + (a(xpart p,s),a(ypart p,s)) + fi + elseif cmykcolor p : + (a(cyanpart p,s),a(magentapart p,s),a(yellowpart p,s),a(blackpart p,s)) + elseif rgbcolor p : + (a(redpart p,s),a(greenpart p,s),a(bluepart p,s)) + elseif graycolor p : + a(p,s) + elseif numeric p : + a(p,s) + else + p + fi +enddef ; + +primarydef p snapped s = + mfun_applied(p,s)(mfun_snapped) % so we can play with variants +enddef ; + +%D New helpers: + +newinternal charscale ; charscale := 1 ; % persistent so one needs to 'reset' it to 0 or 1 + +def beginglyph(expr unicode, width, height, depth) = + beginfig(unicode) ; % the number is irrelevant + charcode := unicode ; + charwd := width ; + charht := height ; + chardp := depth ; + % charscale := 1 ; % can be set for a whole font, so no reset here +enddef ; + +def endglyph = + setbounds currentpicture to (boundingbox unitsquare xscaled charwd yscaled (charht + chardp) shifted (0,-chardp)) ; + if known charscale : if (charscale > 0) and (charscale <> 1) : + currentpicture := currentpicture scaled charscale ; + fi ; fi ; + endfig ; +enddef ; + +%D Dimensions have never been an issue as traditional MP can't make that large +%D pictures, but with double mode we need a catch: + +newinternal maxdimensions ; maxdimensions := 14000 ; + +def mfun_apply_max_dimensions = % not a generic helper, we want to protect this one + if bbwidth currentpicture > maxdimensions : + currentpicture := currentpicture if bbheight currentpicture > bbwidth currentpicture : ysized else : xsized fi maxdimensions ; + elseif bbheight currentpicture > maxdimensions : + currentpicture := currentpicture ysized maxdimensions ; + fi ; +enddef; + +extra_endfig := extra_endfig & "mfun_apply_max_dimensions ;" ; + +let dump = relax ; |