From dd50c74f0702bff05e96d5d3994316405414663e Mon Sep 17 00:00:00 2001 From: Hans Hagen Date: Thu, 30 Dec 1999 00:00:00 +0100 Subject: stable 1999.12.30 --- metapost/context/mp-chart.mp | 1168 ++++++++++++++++++++++++++++++++++++++++++ metapost/context/mp-page.mp | 151 ++++++ metapost/context/mp-tool.mp | 377 ++++++++++++++ 3 files changed, 1696 insertions(+) create mode 100644 metapost/context/mp-chart.mp create mode 100644 metapost/context/mp-page.mp create mode 100644 metapost/context/mp-tool.mp (limited to 'metapost') diff --git a/metapost/context/mp-chart.mp b/metapost/context/mp-chart.mp new file mode 100644 index 000000000..148f0ac2d --- /dev/null +++ b/metapost/context/mp-chart.mp @@ -0,0 +1,1168 @@ +%D \module +%D [ file=mp-chart.mp, +%D version=1998.10.10, +%D title=PRAGMA graphics, +%D subtitle=shapes and charts, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA / Hans Hagen \& Ton Otten}] +%C +%C This METAPOST program is copyrighted by Hans Hagen and +%C Ton Otten, Ridderstraat 27, 8061GH Hasselt NL. No part of +%C this program may be used by third parties without +%C explicit permission. + +input mp-tool.mp ; + +vardef enlarged_path (expr p, w) = % NAAR mp-tool + (llcorner p shifted (-w,-w) -- + lrcorner p shifted ( w,-w) -- + urcorner p shifted ( w, w) -- + ulcorner p shifted (-w, w) -- cycle) +enddef; + +secondarydef p peepholed q = + begingroup ; + save start ; pair start ; start := point 0 of p ; + %drawdot start scaled_to_grid withpen pencircle scaled 2shape_line_width withcolor red ; + 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 ; + +current_position := 0 ; + +def save_text_position (expr p) = % beware: clip shift needed + current_position := current_position + 1 ; + write + "\MPposition{" & decimal current_position & "}{" + & decimal xpart p & "}{" + & decimal ypart p & "}" + to jobname & ".tmp" ; +enddef ; + +%D inclusions + +input mp-tool ; + +%D settings + +grid_width := 60pt ; +grid_height := 40pt ; + +shape_width := 45pt ; +shape_height := 30pt ; + +chart_offset := 2pt ; + +color chart_background_color ; chart_background_color := white ; + +%D test mode + +boolean show_mid_points ; show_mid_points := false ; +boolean show_con_points ; show_con_points := false ; +boolean show_all_points ; show_all_points := false ; + +%D shapes + +color shape_line_color, shape_fill_color ; + +shape_line_width := 2pt ; +shape_line_color := .5white ; +shape_fill_color := .9white ; + +shape_node := 0 ; +shape_action := 24 ; +shape_procedure := 5 ; +shape_product := 12 ; +shape_decision := 14 ; +shape_archive := 19 ; +shape_loop := 35 ; +shape_wait := 6 ; +shape_subprocedure := 20 ; shape_sub_procedure := 20 ; +shape_singledocument := 32 ; shape_single_document := 32 ; +shape_multidocument := 33 ; shape_multi_document := 33 ; +shape_right := 66 ; +shape_left := 67 ; +shape_up := 68 ; +shape_down := 69 ; + +vardef some_shape (expr type) = + + begingroup ; + + save border, xradius, yradius, + normal, mirror, rotate, + lc, rc, tc, bc, ll, lr, ur, ul, + llx, lrx, urx, ulx, lly, lry, ury, uly ; + + path border ; + + xradius := .15 ; xxradius := .10 ; + yradius := .15 ; yyradius := .10 ; + + pair ll ; ll := llcorner (unitsquare shifted (-.5,-.5)) ; + pair lr ; lr := lrcorner (unitsquare shifted (-.5,-.5)) ; + pair ur ; ur := urcorner (unitsquare shifted (-.5,-.5)) ; + pair ul ; ul := ulcorner (unitsquare shifted (-.5,-.5)) ; + + pair llx ; llx := ll shifted (xradius,0) ; + pair lly ; lly := ll shifted (0,yradius) ; + + pair lrx ; lrx := lr shifted (-xradius,0) ; + pair lry ; lry := lr shifted (0,yradius) ; + + pair urx ; urx := ur shifted (-xradius,0) ; + pair ury ; ury := ur shifted (0,-yradius) ; + + pair ulx ; ulx := ul shifted (xradius,0) ; + pair uly ; uly := ul shifted (0,-yradius) ; + + pair llxx ; llxx := ll shifted (xxradius,0) ; + pair llyy ; llyy := ll shifted (0,yyradius) ; + + pair lrxx ; lrxx := lr shifted (-xxradius,0) ; + pair lryy ; lryy := lr shifted (0,yyradius) ; + + pair urxx ; urxx := ur shifted (-xxradius,0) ; + pair uryy ; uryy := ur shifted (0,-yyradius) ; + + pair ulxx ; ulxx := ul shifted (xxradius,0) ; + pair ulyy ; ulyy := ul shifted (0,-yyradius) ; + + pair lc ; lc := ll shifted (0,.5) ; + pair rc ; rc := lr shifted (0,.5) ; + pair tc ; tc := ul shifted (.5,0) ; + pair bc ; bc := ll shifted (.5,0) ; + + def mirror (expr p) = + p rotatedaround(origin,180) + enddef ; + + def normal (expr p ) = + p + enddef ; + + def rotate (expr p) = + p rotated 45 + enddef ; + + if type= 0 : + border := normal (origin--cycle) ; + + elseif type= 5 : + border := normal (llx--lrx{right}...rc...{left}urx--ulx{left}...lc...{right}cycle) ; + elseif type= 6 : + border := normal (ll--lrx{right}...rc...{left}urx--ul--cycle) ; + elseif type= 7 : + border := mirror (ll--lrx{right}...rc...{left}urx--ul--cycle) ; + elseif type= 8 : + border := normal (lr--ury{up}...tc...{down}uly--ll--cycle) ; + elseif type= 9 : + border := mirror (lr--ury{up}...tc...{down}uly--ll--cycle) ; + elseif type=10 : + border := normal (ll--lr--ur--ul--ll--ur--ul--ll--cycle) ; + elseif type=11 : + border := normal (ll--lr--ur--ul--ll--lr--ul--ll--cycle) ; + elseif type=12 : + border := normal (ll--lrx--ur--ulx--cycle) ; + elseif type=13 : + border := normal (llx--lr--urx--ul--cycle) ; + elseif type=14 : + border := normal (lly--bc--lry--ury--tc--uly--cycle) ; + elseif type=15 : + border := normal (llx--lrx--rc--urx--ulx--lc--cycle) ; + elseif type=16 : + border := normal (ll--lrx--rc--urx--ul--cycle) ; + elseif type=17 : + border := mirror (ll--lrx--rc--urx--ul--cycle) ; + elseif type=18 : + border := normal (lr--ury--tc--uly--ll--cycle) ; + elseif type=19 : + border := mirror (lr--ury--tc--uly--ll--cycle) ; + elseif type=20 : + border := normal (ll--lr--ur--ul--ll--llxx--ulxx--ul--ll-- + lr--ur--urxx--lrxx--cycle) ; + elseif type=21 : + border := normal (ul--ll--lr--ur--ul--ulyy--uryy--ur--ul-- + ll--lr--lryy--llyy--cycle) ; + elseif type=22 : + border := normal (ll--lrx--lry--ur--ulx--uly--cycle) ; + elseif type=23 : + border := normal (llx--lr--ury--urx--ul--lly--cycle) ; + elseif type=24 : + border := normal (ll--lr--ur--ul--cycle) ; + elseif type=25 : + border := normal (llx--lrx--lry--ury--urx--ulx--uly--lly--cycle) ; + elseif type=26 : + border := normal (ll--lrx--lry--ur--ul--cycle) ; + elseif type=27 : + border := mirror (ll--lr--ury--urx--ul--cycle) ; + elseif type=28 : + border := normal (ll--lr--ury--urx--ul--cycle) ; + elseif type=29 : + border := mirror (ll--lrx--lry--ur--ul--cycle) ; + elseif type=30 : + border := rotate (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) ; + elseif type=31 : + border := normal (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) ; + elseif type=32 : + border := normal (ll{right}...{right}lry--ur--ul--ll--cycle) ; + elseif type=33 : + border := normal (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 ) ; + elseif type=34 : + border := normal (uly..tc..ury & + ury..tc shifted (0,-2yradius)..uly & + uly--lly & + lly..bc..lry & + lry--ury & + ury..tc shifted (0,-2yradius)..uly & cycle ) ; + elseif type=35 : + border := normal (bc{right}...rc{up}...tc{left}...lc{down}...cycle) ; + elseif type=36 : + border := normal (ul--tc{right}..rc{down}..{left}bc--ll & + ll..(xpart llx, ypart lc)..ul & cycle) ; + elseif type=37 : + border := mirror (ul--tc{right}..rc{down}..{left}bc--ll & + ll..(xpart llx, ypart lc)..ul & cycle) ; + elseif type=38 : + border := normal (ll--lc{up}..tc{right}..{down}rc--lr & + lr..(xpart bc, ypart lly)..ll & cycle) ; + elseif type=39 : + border := mirror (ll--lc{up}..tc{right}..{down}rc--lr & + lr..(xpart bc, ypart lly)..ll & cycle) ; + elseif type=40 : + border := normal (ll--lr--ur--ul--ll--ur--ul--ll--lr--ul--ll--cycle) ; + elseif type=41 : + border := normal (ll--lr--ur--ul--ll--lr--rc--lc--ll--bc--tc--ul--ll & cycle) ; + elseif type=42 : + border := normal (ll--lr--origin shifted (+epsilon,0)-- + ur--ul--origin shifted (-epsilon,0)--cycle) ; + elseif type=43 : + border := normal (ll--ul--origin shifted (0,+epsilon)-- + ur--lr--origin shifted (0,-epsilon)--cycle) ; + elseif type=45 : + border := normal (bc--rc--tc--lc--cycle) ; + elseif type=46 : + border := normal (ll--ul--rc--cycle) ; + elseif type=47 : + border := mirror (ll--ul--rc--cycle) ; + elseif type=48 : + border := mirror (ul--ur--bc--cycle) ; + elseif type=49 : + border := normal (ul--ur--bc--cycle) ; + elseif type=56 : + border := normal (ll--lry--ury--ul--cycle) ; + elseif type=57 : + border := mirror (ll--lry--ury--ul--cycle) ; + elseif type=58 : + border := normal (ll--ulx--urx--lr--cycle) ; + elseif type=59 : + border := mirror (ll--ulx--urx--lr--cycle) ; + elseif type= 66 : + border := normal (rc--origin shifted ( epsilon,0) --cycle & + rc--origin --cycle ) ; + elseif type= 67 : + border := normal (lc--origin shifted (-epsilon,0) --cycle & + lc--origin --cycle ) ; + elseif type= 68 : + border := normal (tc--origin shifted (0, epsilon) --cycle & + tc--origin --cycle ) ; + elseif type= 69 : + border := normal (bc--origin shifted (0,-epsilon) --cycle & + bc--origin --cycle ) ; + + else : + border := normal (origin--cycle) ; + %border := normal (ll--lr--ur--ul--cycle) ; + fi ; + + border + + endgroup + +enddef; + +def show_shapes (expr n) = + + begin_chart(n,7,10) ; + show_con_points := true ; + for i=0 upto 6 : + for j=0 upto 9 : + new_shape(i+1,j+1,i*10+j); + endfor ; + endfor ; + end_chart ; + +enddef ; + +%D connections + +color connection_line_color ; + +connection_line_width := shape_line_width ; +connection_line_color := .8white ; +connection_smooth_size := 5pt ; +connection_arrow_size := 4pt ; +connection_dash_size := 3pt ; + +max_x := 6 ; +max_y := 4 ; + +numeric xypoint ; xypoint := 0 ; + +pair xypoints [] ; + +boolean xyfree [][] ; +path xypath [][] ; +numeric xysx [][] ; +numeric xysy [][] ; +color xyfill [][] ; +color xydraw [][] ; +numeric xyline [][] ; +boolean xypeep [][] ; + +numeric cpath ; cpath := 0 ; +path cpaths [] ; +numeric cline [] ; +color ccolor [] ; +boolean carrow [] ; +boolean cdash [] ; +boolean ccross [] ; + +boolean smooth ; smooth := true ; +boolean peepshape ; peepshape := false ; +boolean arrowtip ; arrowtip := true ; +boolean dashline ; dashline := false ; +boolean forcevalid ; forcevalid := false ; +boolean touchshape ; touchshape := false ; +boolean showcrossing ; showcrossing := false ; + +picture dash_pattern ; + +boolean reverse_y ; reverse_y := true ; + +def y_pos (expr y) = + if reverse_y : max_y + 1 - y else : y fi +enddef ; + +def initialize_grid (expr maxx, maxy) = + begingroup ; + save i, j ; + max_x := maxx ; + max_y := maxy ; + for x=1 upto max_x : + for y=1 upto max_y : + xyfree [x][y] := true ; + xyfill [x][y] := shape_fill_color ; + xydraw [x][y] := shape_line_color ; + xyline [x][y] := shape_line_width ; + endfor ; + endfor ; + endgroup ; +enddef ; + +def scaled_to_grid = + xscaled grid_width yscaled grid_height +enddef ; + +def xy_offset (expr x, y) = + (x+.5,y+.5) +enddef ; + +def draw_shape (expr x, yy, p, sx, sy) = + begingroup ; + save y ; + y := y_pos(yy) ; + xypath [x][y] := (p xscaled sx yscaled sy) shifted xy_offset(x,y) ; + xyfree [x][y] := false ; + xysx [x][y] := sx ; + xysy [x][y] := sy ; + xyfill [x][y] := shape_fill_color ; + xydraw [x][y] := shape_line_color ; + xyline [x][y] := shape_line_width ; + xypeep [x][y] := peepshape ; + endgroup ; +enddef ; + +vardef i_point (expr x, y, p, t) = + begingroup ; + save q, ok ; + pair q ; + boolean ok ; + q := xypath[x][y] intersection_point ((p) shifted xy_offset(x,y)) ; + ok := true ; +% if xpart q < -.5 : ok := false ; q := (-.45,ypart q) fi ; +% if xpart q > .5 : ok := false ; q := ( .45,ypart q) fi ; +% if ypart q < -.5 : ok := false ; q := (xpart q,-.45) fi ; +% if ypart q > .5 : ok := false ; q := (xpart q, .45) fi ; + if not ok : + message (t & " of shape (" & decimal x & "," & decimal y & ") limited") ; + fi ; + q + endgroup +enddef ; + +vardef trimmed (expr x, y, z, t) = + if touchshape and t : xyline[x][y]/z else : epsilon fi +enddef ; + +zfactor := 1/3 ; + +vardef xy_bottom (expr x, y, z, t) = + i_point (x, y, ((0,0)--(0,-2)) shifted (zfactor*z*xysx[x][y],0), "bottom") + shifted(0,-trimmed(x,y,grid_height,t)) +enddef ; + +vardef xy_top (expr x, y, z, t) = + i_point (x, y, ((0,0)--(0,2)) shifted (zfactor*z*xysx[x][y],0), "top") + shifted(0,trimmed(x,y,grid_height,t)) +enddef ; + +vardef xy_left (expr x, y, z, t) = + i_point (x, y, ((0,0)--(-2,0)) shifted (0,zfactor*z*xysy[x][y]), "left") + shifted(-trimmed(x,y,grid_width,t),0) +enddef ; + +vardef xy_right (expr x, y, z, t) = + i_point (x, y, ((0,0)--(2,0)) shifted (0,zfactor*z*xysy[x][y]), "right") + shifted(trimmed(x,y,grid_width,t),0) +enddef ; + +def flush_shapes = + for x=1 upto max_x : + for y=1 upto max_y : + flush_shape (x, y) ; + endfor ; + endfor ; +enddef ; + +def draw_connection_point (expr x, y, z) = + pickup pencircle scaled if (z=0): 2 fi xyline[x][y] ; + drawdot xy_bottom(x,y,z,false) scaled_to_grid withcolor (1,0,0) ; + drawdot xy_top (x,y,z,false) scaled_to_grid withcolor (0,1,0) ; + drawdot xy_left (x,y,z,false) scaled_to_grid withcolor (0,0,1) ; + drawdot xy_right (x,y,z,false) scaled_to_grid withcolor (1,1,0) ; +enddef ; + +def flush_shape (expr x, yy) = + begingroup ; + save y ; + y := y_pos(yy) ; + if not xyfree[x][y] : + pickup pencircle scaled xyline[x][y] ; + if xypeep[x][y] : + fill (xypath[x][y] peepholed (unitsquare shifted (x,y))) + scaled_to_grid withpen pencircle scaled 0 + withcolor chart_background_color ; + else : + fill xypath[x][y] scaled_to_grid withcolor xyfill[x][y] ; + fi ; + draw xypath[x][y] scaled_to_grid withcolor xydraw[x][y] ; + if show_con_points or show_all_points : + draw_connection_point (x, y, 0) ; + fi ; + if show_all_points : + for i=-1 upto 1 : + draw_connection_point (x, y, i) ; + endfor ; + fi ; + fi ; + endgroup ; +enddef ; + +vardef points_initialized (expr xfrom, yfrom, xto, yto, n) = + if not xyfree[xfrom][yfrom] and not xyfree[xto][yto] : + xypoint := n ; true + else : + xypoint := 0 ; false + fi +enddef ; + +def collapse_points = + % remove redundant points + n := 1 ; + for i=2 upto xypoint: + if not (xypoints[i]=xypoints[n]) : + n := n + 1 ; + xypoints[n] := xypoints[i] + fi ; + endfor ; + xypoint := n ; + % make straight lines + if xypoints[2]=xypoints[xypoint-1] : + xypoints[3] := xypoints[xypoint] ; + xypoint := 3 ; + fi ; +enddef ; + +vardef smoothed (expr a,b) = + sx := connection_smooth_size/grid_width ; + sy := connection_smooth_size/grid_height ; + if ypart a = ypart b : + a shifted (if xpart a >= xpart b : - fi sx,0) + else : + a shifted (0,if ypart a >= ypart b : - fi sy) + fi +enddef ; + +vardef trim_points = + begingroup + save p, a, b, d, i ; path p ; pair d ; + p := for i=1 upto xypoint-1 : xypoints[i]-- endfor xypoints[xypoint] ; + if touchshape : + a := shape_line_width/grid_width ; + b := shape_line_width/grid_height ; + else : + a := epsilon ; + b := epsilon ; + fi ; + d := direction infinity of p ; + xypoints[xypoint] := xypoints[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 ; + xypoints[1] := 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 trim_points = enddef ; + +vardef connection_path = + if reverse_connection : reverse fi (xypoints[1]-- + for i=2 upto xypoint-1 : + if smooth : + smoothed(xypoints[i],xypoints[i-1]) .. + controls xypoints[i] and xypoints[i] .. + smoothed(xypoints[i],xypoints[i+1]) -- + else : + xypoints[i]-- + fi + endfor + xypoints[xypoint]) +enddef ; + +def draw_connection = + if xypoint>0 : + collapse_points ; + trim_points ; + cpath := cpath + 1 ; + cpaths[cpath] := connection_path scaled_to_grid ; + cline[cpath] := connection_line_width ; + ccolor[cpath] := connection_line_color ; + carrow[cpath] := arrowtip ; + cdash[cpath] := dashline ; + ccross[cpath] := showcrossing ; + else : + message("no connection defined") ; + fi ; + reverse_connection := false ; +enddef ; + +def flush_connections = + pair ip ; + boolean crossing ; + ahlength := connection_arrow_size ; + dash_pattern := dashpattern(on connection_dash_size off connection_dash_size ) ; + for i=1 upto cpath : + if ccross[i] : + crossing := false ; + for j=1 upto i : + %if not ((point infinity of cpaths[i] = point infinity of cpaths[j]) or + % (point 0 of cpaths[i] = point 0 of cpaths[j])) : + if not (point infinity of cpaths[i] = point infinity of cpaths[j]) : + ip := cpaths[i] intersection_point cpaths[j] ; + if intersection_found : crossing := true fi ; + fi ; + endfor ; + if crossing : + pickup pencircle scaled 2cline[i] ; +% draw cpaths[i] withcolor chart_background_color ; +path cp ; cp := cpaths[i] ; +cp := cp cutbefore point .05 length cp of cp ; +cp := cp cutafter point .95 length cp of cp ; +draw cp withcolor chart_background_color ; + fi ; + fi ; + pickup pencircle scaled cline[i] ; + if carrow[i] : + if cdash[i] : + drawarrow cpaths[i] withcolor ccolor[i] dashed dash_pattern ; + else : + drawarrow cpaths[i] withcolor ccolor[i] ; + fi ; + else : + if cdash[i] : + draw cpaths[i] withcolor ccolor[i] dashed dash_pattern ; + else : + draw cpaths[i] withcolor ccolor[i] ; + fi ; + fi ; + draw_midpoint (i) ; + endfor ; +enddef ; + +def draw_midpoint (expr n) = + begingroup + save p ; + pair p ; + p := point .5*length(cpaths[n]) of cpaths[n]; + pickup pencircle scaled 2cline[n] ; + save_text_position (p) ; + if show_mid_points : + drawdot p withcolor .7white ; + fi ; + endgroup ; +enddef ; + +boolean reverse_connection ; reverse_connection := false ; + +vardef up_on_grid (expr n) = + (xpart xypoints[n],(ypart xypoints[n]+1) div 1) +enddef ; + +vardef down_on_grid (expr n) = + (xpart xypoints[n],(ypart xypoints[n]) div 1) +enddef ; + +vardef left_on_grid (expr n) = + ((xpart xypoints[n]) div 1, ypart xypoints[n]) +enddef ; + +vardef right_on_grid (expr n) = + ((xpart xypoints[n]+1) div 1, ypart xypoints[n]) +enddef ; + +vardef x_on_grid (expr n, xfrom, xto, zfrom) = + if (xfrom=xto) and not (zfrom=0) : + if (zfrom=1) : right_on_grid(2) else : left_on_grid(2) fi + elseif xpart xypoints[1] < xpart xypoints[6] : + right_on_grid(n) + else : + left_on_grid(n) + fi +enddef ; + +vardef y_on_grid (expr n, yfrom, yto, zfrom) = + if (yfrom=yto) and not (zfrom=0) : + if (zfrom=1) : up_on_grid(2) else : down_on_grid(2) fi + elseif ypart xypoints[1] < ypart xypoints[6] : + up_on_grid(n) + else : + down_on_grid(n) + fi +enddef ; + +vardef xy_on_grid (expr n, m) = + (xpart xypoints[n], ypart xypoints[m]) +enddef ; + +vardef down_to_grid (expr a,b) = + (xpart xypoints[a], + ypart xypoints[if ypart xypoints[a]ypart xypoints[b]:a else:b fi]) +enddef ; + +vardef left_to_grid (expr a,b) = + (xpart xypoints[if xpart xypoints[a]xpart xypoints[b]:a else:b fi], + ypart xypoints[a]) +enddef ; + +vardef valid_connection (expr xfrom, yfrom, xto, yto) = + begingroup ; + save ok, vc, pp ; + boolean ok ; + % check for slanted lines + ok := true ; + for i=1 upto xypoint-1 : + if not ((xpart xypoints[i]=xpart xypoints[i+1]) or + (ypart xypoints[i]=ypart xypoints[i+1])) : ok := false ; + fi ; + endfor ; + if not ok : + %message("slanted"); + false + elseif forcevalid : + %message("force"); + true + elseif (xfrom=xto) and (yfrom=yto) : + %message("self"); + false + else : + % check for crossing shapes + pair vc ; + path pp ; + + pair xyfirst, xylast ; + xyfirst := xypoints[1] ; + xylast := xypoints[xypoint] ; + trim_points ; + pp := for i=1 upto xypoint-1 : xypoints[i]-- endfor xypoints[xypoint] ; + xypoints[1] := xyfirst ; + xypoints[xypoint] := xylast ; + + for i=1 upto max_x : + for j=1 upto max_y : +if not ( ( (i,j) = (xfrom,yfrom) ) or ( (i,j) = (yfrom,yto) ) ) : + if not xyfree[i][j] : + vc := pp intersection_point xypath[i][j] ; + if intersection_found : ok := false fi ; + fi ; +fi ; + endfor ; + endfor ; + %if not ok: message("crossing") ; fi ; + ok + fi + endgroup +enddef ; + +def connect_top_bottom (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := y_pos(yyfrom) ; yto := y_pos(yyto) ; + if points_initialized(xfrom,yfrom,xto,yto,6) : + xypoints[1] := xy_top(xfrom,yfrom,zfrom,true) ; + xypoints[6] := xy_bottom(xto,yto,zto,true) ; + xypoints[2] := up_on_grid(1) ; + xypoints[5] := down_on_grid(6) ; + xypoints[3] := up_to_grid(2,5) ; + xypoints[4] := up_to_grid(2,5) ; + if not valid_connection(xfrom,yfrom,xto,yto) : + xypoints[3] := x_on_grid(2,xfrom,xto,zfrom) ; + xypoints[4] := xy_on_grid(3,5) ; + fi ; + draw_connection ; + fi ; +enddef ; + +def connect_left_right (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := y_pos(yyfrom) ; yto := y_pos(yyto) ; + if points_initialized(xfrom,yfrom,xto,yto,6) : + xypoints[1] := xy_left(xfrom,yfrom,zfrom,true) ; + xypoints[6] := xy_right(xto,yto,zto,true) ; + xypoints[2] := left_on_grid(1) ; + xypoints[5] := right_on_grid(6) ; + xypoints[3] := left_to_grid(2,5) ; + xypoints[4] := left_to_grid(2,5) ; + if not valid_connection(xfrom,yfrom,xto,yto) : + xypoints[3] := y_on_grid(2,yfrom,yto,zfrom) ; + xypoints[4] := xy_on_grid(5,3) ; + fi ; + draw_connection ; + fi ; +enddef ; + +def connect_left_top (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := y_pos(yyfrom) ; yto := y_pos(yyto) ; + if points_initialized(xfrom,yfrom,xto,yto,5) : + xypoints[1] := xy_left(xfrom,yfrom,zfrom,true) ; + xypoints[5] := xy_top(xto,yto,zto,true) ; + xypoints[2] := left_on_grid(1) ; + xypoints[4] := up_on_grid(5) ; + xypoints[3] := left_to_grid(2,5) ; + if not valid_connection(xfrom,yfrom,xto,yto) : + xypoints[3] := xy_on_grid(2,4) ; + fi ; + draw_connection ; + fi ; +enddef ; + +def connect_left_bottom (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := y_pos(yyfrom) ; yto := y_pos(yyto) ; + if points_initialized(xfrom,yfrom,xto,yto,5) : + xypoints[1] := xy_left(xfrom,yfrom,zfrom,true) ; + xypoints[5] := xy_bottom(xto,yto,zto,true) ; + xypoints[2] := left_on_grid(1) ; + xypoints[4] := down_on_grid(5) ; + xypoints[3] := left_to_grid(2,5) ; + if not valid_connection(xfrom,yfrom,xto,yto) : + xypoints[3] := xy_on_grid(2,4) ; + fi ; + draw_connection ; + fi ; +enddef ; + +def connect_right_top (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := y_pos(yyfrom) ; yto := y_pos(yyto) ; + if points_initialized(xfrom,yfrom,xto,yto,5) : + xypoints[1] := xy_right(xfrom,yfrom,zfrom,true) ; + xypoints[5] := xy_top(xto,yto,zto,true) ; + xypoints[2] := right_on_grid(1) ; + xypoints[4] := up_on_grid(5) ; + xypoints[3] := right_to_grid(2,5) ; + if not valid_connection(xfrom,yfrom,xto,yto) : + xypoints[3] := xy_on_grid(2,4) ; + fi ; + draw_connection ; + fi ; +enddef ; + +def connect_right_bottom (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := y_pos(yyfrom) ; yto := y_pos(yyto) ; + if points_initialized(xfrom,yfrom,xto,yto,5) : + xypoints[1] := xy_right(xfrom,yfrom,zfrom,true) ; + xypoints[5] := xy_bottom(xto,yto,zto,true) ; + xypoints[2] := right_on_grid(1) ; + xypoints[4] := down_on_grid(5) ; + xypoints[3] := right_to_grid(2,5) ; + if not valid_connection(xfrom,yfrom,xto,yto) : + xypoints[3] := xy_on_grid(2,4) ; + fi ; + draw_connection ; + fi ; +enddef ; + +def connect_left_left (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := y_pos(yyfrom) ; yto := y_pos(yyto) ; + if points_initialized(xfrom,yfrom,xto,yto,6) : + xypoints[1] := xy_left(xfrom,yfrom,zfrom,true) ; + xypoints[6] := xy_left(xto,yto,zto,true) ; + xypoints[2] := left_on_grid(1) ; + xypoints[5] := left_on_grid(6) ; + xypoints[3] := left_to_grid(2,5) ; + xypoints[4] := left_to_grid(5,2) ; + if not valid_connection(xfrom,yfrom,xto,yto) : + xypoints[3] := y_on_grid(2,yfrom,yto,zfrom) ; + xypoints[4] := xy_on_grid(5,3) ; + fi ; + draw_connection ; + fi ; +enddef ; + +def connect_right_right (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := y_pos(yyfrom) ; yto := y_pos(yyto) ; + if points_initialized(xfrom,yfrom,xto,yto,6) : + xypoints[1] := xy_right(xfrom,yfrom,zfrom,true) ; + xypoints[6] := xy_right(xto,yto,zto,true) ; + xypoints[2] := right_on_grid(1) ; + xypoints[5] := right_on_grid(6) ; + xypoints[3] := right_to_grid(2,5) ; + xypoints[4] := right_to_grid(5,2) ; + if not valid_connection(xfrom,yfrom,xto,yto) : + xypoints[3] := y_on_grid(2,yfrom,yto,zfrom) ; + xypoints[4] := xy_on_grid(5,3) ; + fi ; + draw_connection ; + fi ; +enddef ; + +def connect_top_top (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := y_pos(yyfrom) ; yto := y_pos(yyto) ; + if points_initialized(xfrom,yfrom,xto,yto,6) : + xypoints[1] := xy_top(xfrom,yfrom,zfrom,true) ; + xypoints[6] := xy_top(xto,yto,zto,true) ; + xypoints[2] := up_on_grid(1) ; + xypoints[5] := up_on_grid(6) ; + xypoints[3] := up_to_grid(2,5) ; + xypoints[4] := up_to_grid(5,2) ; + if not valid_connection(xfrom,yfrom,xto,yto) : + xypoints[3] := x_on_grid(2,xfrom,xto,zfrom) ; + xypoints[4] := xy_on_grid(3,5) ; + fi ; + draw_connection ; + fi ; +enddef ; + +def connect_bottom_bottom (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = + yfrom := y_pos(yyfrom) ; yto := y_pos(yyto) ; + if points_initialized(xfrom,yfrom,xto,yto,6) : + xypoints[1] := xy_bottom(xfrom,yfrom,zfrom,true) ; + xypoints[6] := xy_bottom(xto,yto,zto,true) ; + xypoints[2] := down_on_grid(1) ; + xypoints[5] := down_on_grid(6) ; + xypoints[3] := down_to_grid(2,5) ; + xypoints[4] := down_to_grid(5,2) ; + if not valid_connection(xfrom,yfrom,xto,yto) : + xypoints[3] := x_on_grid(2,xfrom,xto,zfrom) ; + xypoints[4] := xy_on_grid(3,5) ; + fi ; + draw_connection ; + fi ; +enddef ; + +def connect_bottom_top (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = + reverse_connection := true ; + connect_top_bottom (xto,yto,zto) (xfrom,yfrom,zfrom) ; +enddef ; + +def connect_right_left (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = + reverse_connection := true ; + connect_left_right (xto,yto,zto) (xfrom,yfrom,zfrom) ; +enddef ; + +def connect_top_left (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = + reverse_connection := true ; + connect_left_top (xto,yto,zto) (xfrom,yfrom,zfrom) ; +enddef ; + +def connect_bottom_left (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = + reverse_connection := true ; + connect_left_bottom (xto,yto,zto) (xfrom,yfrom,zfrom) ; +enddef ; + +def connect_top_right (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = + reverse_connection := true ; + connect_right_top (xto,yto,zto) (xfrom,yfrom,zfrom) ; +enddef ; + +def connect_bottom_right (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = + reverse_connection := true ; + connect_right_bottom (xto,yto,zto) (xfrom,yfrom,zfrom) ; +enddef ; + +def draw_test_shape (expr x, y) = + draw_shape(x,y,fullcircle, .7, .7) ; +enddef ; + +def draw_test_shapes = + for i=1 upto max_x : + for j=1 upto max_y : + draw_test_shape(i,j) ; + endfor ; + endfor ; +enddef; + +def draw_test_area = + pickup pencircle scaled .5shape_line_width ; + draw (unitsquare xscaled max_x yscaled max_y shifted (1,1)) + scaled_to_grid withcolor blue ; +enddef ; + +def show_connection (expr n, m) = + + begin_chart(100+n,6,6) ; + + draw_test_area ; + + smooth := true ; + arrowtip := true ; + dashline := true ; + + draw_test_shape(2,2) ; draw_test_shape(4,5) ; + draw_test_shape(3,3) ; draw_test_shape(5,1) ; + draw_test_shape(2,5) ; draw_test_shape(1,3) ; + draw_test_shape(6,2) ; draw_test_shape(4,6) ; + + if (m=1) : + connect_top_bottom (2,2,0) (4,5,0) ; + connect_top_bottom (3,3,0) (5,1,0) ; + connect_top_bottom (2,5,0) (1,3,0) ; + connect_top_bottom (6,2,0) (4,6,0) ; + elseif (m=2) : + connect_top_top (2,2,0) (4,5,0) ; + connect_top_top (3,3,0) (5,1,0) ; + connect_top_top (2,5,0) (1,3,0) ; + connect_top_top (6,2,0) (4,6,0) ; + elseif (m=3) : + connect_bottom_bottom (2,2,0) (4,5,0) ; + connect_bottom_bottom (3,3,0) (5,1,0) ; + connect_bottom_bottom (2,5,0) (1,3,0) ; + connect_bottom_bottom (6,2,0) (4,6,0) ; + elseif (m=4) : + connect_left_right (2,2,0) (4,5,0) ; + connect_left_right (3,3,0) (5,1,0) ; + connect_left_right (2,5,0) (1,3,0) ; + connect_left_right (6,2,0) (4,6,0) ; + elseif (m=5) : + connect_left_left (2,2,0) (4,5,0) ; + connect_left_left (3,3,0) (5,1,0) ; + connect_left_left (2,5,0) (1,3,0) ; + connect_left_left (6,2,0) (4,6,0) ; + elseif (m=6) : + connect_right_right (2,2,0) (4,5,0) ; + connect_right_right (3,3,0) (5,1,0) ; + connect_right_right (2,5,0) (1,3,0) ; + connect_right_right (6,2,0) (4,6,0) ; + elseif (m=7) : + connect_left_top (2,2,0) (4,5,0) ; + connect_left_top (3,3,0) (5,1,0) ; + connect_left_top (2,5,0) (1,3,0) ; + connect_left_top (6,2,0) (4,6,0) ; + elseif (m=8) : + connect_left_bottom (2,2,0) (4,5,0) ; + connect_left_bottom (3,3,0) (5,1,0) ; + connect_left_bottom (2,5,0) (1,3,0) ; + connect_left_bottom (6,2,0) (4,6,0) ; + elseif (m=9) : + connect_right_top (2,2,0) (4,5,0) ; + connect_right_top (3,3,0) (5,1,0) ; + connect_right_top (2,5,0) (1,3,0) ; + connect_right_top (6,2,0) (4,6,0) ; + else : + connect_right_bottom (2,2,0) (4,5,0) ; + connect_right_bottom (3,3,0) (5,1,0) ; + connect_right_bottom (2,5,0) (1,3,0) ; + connect_right_bottom (6,2,0) (4,6,0) ; + fi ; + + end_chart ; + +enddef ; + +def show_connections = + for f=1 upto 10 : + show_connection(f,f) ; + endfor ; +enddef ; + +%D charts + +def clip_chart (expr minx, miny, maxx, maxy) = + cmin_x := minx ; + cmax_x := maxx ; + cmin_y := miny ; + cmax_y := maxy ; +enddef ; + +def begin_chart (expr n, maxx, maxy) = + chart_figure := n ; + chart_scale := 1 ; + if chart_figure>0: beginfig(chart_figure) ; fi ; + initialize_grid (maxx, maxy) ; + bboxmargin := 0 ; + cmin_x := 1 ; + cmax_x := maxx ; + cmin_y := 1 ; + cmax_y := maxy ; +enddef ; + +def end_chart = + flush_shapes ; + flush_connections ; + cmin_x := cmin_x ; + cmax_x := cmin_x+cmax_x ; + cmin_y := cmin_y-1 ; + cmax_y := cmin_y+cmax_y ; + if reverse_y : + cmin_y := y_pos(cmin_y) ; + cmax_y := y_pos(cmax_y) ; + fi ; + path p ; + p := (((cmin_x,cmin_y)--(cmax_x,cmin_y)-- + (cmax_x,cmax_y)--(cmin_x,cmax_y)--cycle)) + scaled_to_grid ; + %draw p withcolor red ; + p := enlarged_path (p,chart_offset) ; + clip currentpicture to p ; + setbounds currentpicture to p ; + write + "\MPclippath{" & + decimal xpart llcorner p & "}{" & + decimal ypart llcorner p & "}{" & + decimal xpart urcorner p & "}{" & + decimal ypart urcorner p & "}" to jobname & ".tmp" ; + write + "\MPareapath{" & + decimal (xpart llcorner p + 2chart_offset) & "}{" & + decimal (ypart llcorner p + 2chart_offset) & "}{" & + decimal (xpart urcorner p - 2chart_offset) & "}{" & + decimal (ypart urcorner p - 2chart_offset) & "}" to jobname & ".tmp" ; +currentpicture := currentpicture scaled chart_scale ; + if chart_figure>0: endfig ; fi ; +enddef ; + +def new_shape (expr x, y, n) = + if known n : + if (x>0) and (x<=max_x) and (y>0) and (y<=max_y) : + sx := shape_width/grid_width ; + sy := shape_height/grid_height ; + draw_shape(x,y,some_shape(n), sx, sy) ; + else : + message ("shape outside grid ignored") ; + fi ; + else + message ("shape not known" ) ; + fi ; +enddef ; + +def begin_sub_chart = + begingroup ; + save shape_line_width , connection_line_width ; + save shape_line_color, shape_fill_color, connection_line_color ; + color shape_line_color, shape_fill_color, connection_line_color ; + save smooth, arrowtip, dashline, peepshape ; + boolean smooth, arrowtip, dashline, peepshape ; +enddef ; + +def end_sub_chart = + endgroup ; +enddef ; + +%D done + +endinput + +%D testing + +show_shapes(100) ; +show_connections ; + +begin_chart (1,4,5) ; + %clip_chart(1,1,1,2) ; + new_shape (1,1,31) ; + new_shape (1,2,3) ; + new_shape (4,4,5) ; + connect_top_left (1,1,0) (4,4,0) ; + connect_bottom_top (1,2,0) (4,4,0) ; + connect_left_right (1,2,0) (1,1,0) ; +end_chart ; + +end diff --git a/metapost/context/mp-page.mp b/metapost/context/mp-page.mp new file mode 100644 index 000000000..73708b468 --- /dev/null +++ b/metapost/context/mp-page.mp @@ -0,0 +1,151 @@ +%D \module +%D [ file=mp-page.mp, +%D version=1999.03.10, +%D title=PRAGMA graphics, +%D subtitle=page 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 This module is rather preliminary and subjected to +%D changes. + +if known StartPage: endinput ; fi ; + +PaperHeight := 845.04684pt ; +PaperWidth := 597.50787pt ; +PrintPaperHeight := 845.04684pt ; +PrintPaperWidth := 597.50787pt ; +TopSpace := 71.12546pt ; +BackSpace := 71.13275pt ; +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 ; + +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 ; + +path Area [][] ; pair Location [][] ; path Field [][] ; path Page ; +numeric HorPos ; numeric Hstep [] ; numeric Hsize [] ; +numeric VerPos ; 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 LoadPageState = + scantokens "input mp-state.tmp" ; +enddef ; + +def StartPage = + LoadPageState ; + + 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 ; + bboxmargin := 0 ; setbounds currentpicture to Page ; +enddef ; + +def StopPage = + bboxmargin := 0 ; setbounds currentpicture to Page ; +enddef ; + +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/mp-tool.mp b/metapost/context/mp-tool.mp new file mode 100644 index 000000000..b2e2d1d89 --- /dev/null +++ b/metapost/context/mp-tool.mp @@ -0,0 +1,377 @@ +%D \module +%D [ file=mp-tool.mp, +%D version=1998.02.15, +%D title=PRAGMA graphics, +%D subtitle=auxiliary 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 This module is rather preliminary and subjected to +%D changes. + +if known stripe_angle: endinput ; fi ; + +%D We always want \EPS\ conforming output, so we say: + +prologues := 2 ; % 1 = troff, 2 = tex +warningcheck := 0 ; + +%D A semicolor to be used in specials: + +string semicolor ; semicolor := char 59 ; + +%D By including this module, \METAPOST\ automatically writes a +%D high resolution boundingbox to the \POSTSCRIPT\ file. This +%D hack is due to John Hobby himself. + +% somehow the first one gets no HiRes. + +vardef ddecimal primary p = + " " & decimal xpart p & + " " & decimal ypart p +enddef ; + +extra_endfig := extra_endfig + & "special " + & "(" + & ditto + & "%%HiResBoundingBox:" + & ditto + & "&ddecimal llcorner currentpicture" + & "&ddecimal urcorner currentpicture" + & ");"; + +%D Also handy (when we flush colors): + +vardef dddecimal primary c = + " " & decimal redpart c & + " " & decimal greenpart c & + " " & decimal bluepart c +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 \starttypen +%D push_boundingbox currentpicture; +%D pop_boundingbox currentpicture; +%D \stoptypen +%D +%D The bounding box can be called with: +%D +%D \starttypen +%D boundingbox currentpicture +%D inner_boundingbox currentpicture +%D outer_boundingbox currentpicture +%D \stoptypen +%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 \starttypen +%D set_outer_boundingbox currentpicture; +%D \stoptypen +%D +%D Its counterpart is: +%D +%D \starttypen +%D set_inner_boundingbox p +%D \stoptypen + +path pushed_boundingbox; + +def push_boundingbox text p = + pushed_boundingbox := boundingbox p; +enddef; + +def pop_boundingbox text p = + setbounds p to pushed_boundingbox; +enddef; + +vardef boundingbox primary p = + llcorner p -- + lrcorner p -- + urcorner p -- + ulcorner p -- cycle +enddef; + +vardef inner_boundingbox primary p = + top rt llcorner p -- + top lft lrcorner p -- + bot lft urcorner p -- + bot rt ulcorner p -- cycle +enddef; + +vardef outer_boundingbox primary p = + bot lft llcorner p -- + bot rt lrcorner p -- + top rt urcorner p -- + top lft ulcorner p -- cycle +enddef; + +vardef set_inner_boundingbox text q = + setbounds q to inner_boundingbox q; +enddef; + +vardef set_outer_boundingbox text q = + setbounds q to outer_boundingbox q; +enddef; + +%D Some missing functions can be implemented rather +%D straightforward: + +def tand (expr x) = (sind(x)/cosd(x)) enddef; +def sqr (expr x) = (x*x) enddef; +def ln (expr x) = (if x=0: 0 else: mlog(x)/256 fi) enddef; +def exp (expr x) = ((mexp 256)**x) enddef; +def pow (expr x) = (x**power) enddef; +def inv (expr x) = (if x=0: 0 else: x**-1 fi) enddef; +def asin (expr x) = (x+(x**3)/6+3(x**5)/40) enddef; +def acos (expr x) = (asin(-x)) enddef; +def atan (expr x) = (x-(x**3)/3+(x**5)/5-(x**7)/7) enddef; + +%D We provide two macros for drawing striped 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 \starttypen +%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 \stoptypen +%D +%D The a (or angle) alternative supports arbitrary angles and +%D is therefore more versatile. +%D +%D \starttypen +%D stripe_path_a +%D (withpen pencircle scaled 2 withcolor red) +%D (draw) +%D fullcircle xscaled 100 yscaled 40 withcolor blue; +%D \stoptypen +%D +%D The first alternative obeys: + +stripe_n := 10; +stripe_slot := 3; + +%D When no pen dimensions are passed, the slot determines +%D the spacing. +%D +%D The angle alternative is influenced by: + +stripe_gap := 5; +stripe_angle := 45; + +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 = + begingroup + save curpic, newpic, bb, pp, ww; + picture curpic, newpic; + path bb, pp; + pp := s_path; + curpic := currentpicture; + currentpicture := nullpicture; + s_draw pp s_text; + bb := boundingbox currentpicture; + newpic := currentpicture; + currentpicture := nullpicture; + ww := min(ypart urcorner newpic - ypart llcorner newpic, + xpart urcorner newpic - xpart llcorner newpic); + ww := ww/(stripe_slot*stripe_n); + for i=1/stripe_n step 1/stripe_n until 1: + draw point (1+i) of bb -- point (3-i) of bb + withpen pencircle scaled ww s_spec ; + endfor; + for i=0 step 1/stripe_n until 1: + draw point (3+i) of bb -- point (1-i) of bb + withpen pencircle scaled ww s_spec; + endfor; + clip currentpicture to pp; + addto newpic also currentpicture; + currentpicture := curpic; + addto currentpicture also newpic; + endgroup +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 = + begingroup + save curpic, newpic, pp; + picture curpic, newpic; + path pp; + pp := s_path; + curpic := currentpicture; + currentpicture := nullpicture; + draw pp s_text; + s_max := max + (xpart llcorner currentpicture, xpart urcorner currentpicture, + ypart llcorner currentpicture, ypart urcorner currentpicture); + newpic := currentpicture; + currentpicture := nullpicture; + for i=-s_max-.5stripe_gap step stripe_gap until s_max: + draw (-s_max,i)--(s_max,i) s_spec; + endfor; + currentpicture := currentpicture + rotatedaround(center newpic, stripe_angle); + clip currentpicture to pp; + addto newpic also currentpicture; + currentpicture := curpic; + addto currentpicture also newpic; + endgroup +enddef; + +%D A few normalizing macros: +%D +%D \starttypen +%D xscale_currentpicture ( width ) +%D yscale_currentpicture ( height ) +%D scale_currentpicture ( width, height ) +%D \stoptypen + +def xscale_currentpicture(expr the_width) = + natural_width := xpart urcorner currentpicture - xpart llcorner currentpicture; + currentpicture := currentpicture scaled (the_width/natural_width) ; +enddef; + +def yscale_currentpicture(expr the_height ) = + natural_height := ypart urcorner currentpicture - ypart llcorner currentpicture; + currentpicture := currentpicture scaled (the_height/natural_height) ; +enddef; + +def scale_currentpicture(expr the_width, the_height) = + xscale_currentpicture(the_width) ; + yscale_currentpicture(the_height) ; +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. + +def fullsquare = (unitsquare shifted - center unitsquare) enddef ; +def unitcircle = (fullcircle shifted urcorner fullcircle) enddef ; + +%D Experimenteel, zie folder-3.tex. + +def set_grid(expr w, h, nx, ny) = + boolean grid[][] ; boolean grid_full ; + 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 tensecircle (expr width, height, offset) = +% ((-width/2,-height/2)..(0,-height/2-offset)..(+width/2,-height/2) & +% (+width/2,-height/2)..(+width/2+offset,0)..(+width/2,+height/2) & +% (+width/2,+height/2)..(0,+height/2+offset)..(-width/2,+height/2) & +% (-width/2,+height/2)..(-width/2-offset,0)..(-width/2,-height/2)..cycle) +%enddef ; + +%D Some colors. + +color cyan ; cyan = (0,1,1) ; +color yellow ; yellow = (1,1,0) ; +color magenta ; magenta = (1,0,1) ; + +endinput ; -- cgit v1.2.3