diff options
Diffstat (limited to 'metapost/context/base')
22 files changed, 10545 insertions, 0 deletions
diff --git a/metapost/context/base/metafun.mp b/metapost/context/base/metafun.mp new file mode 100644 index 000000000..00011c8be --- /dev/null +++ b/metapost/context/base/metafun.mp @@ -0,0 +1,75 @@ +%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 When generating many graphics at runtime, it can save run +%D time to use a format file. We could have named this file +%D \type {context}, but this is error prone, because it forces +%D to use the progname \type {mpost} or \type {context} +%D explicitly, depending on the needs. When using the format, +%D a mismatch in the memory specification of \type {mpost} or +%D \type {context} (the \TEX\ one) could lead to lost strings +%D (and as a result in buggy boundingbox and special +%D handling). By using the name \type {metatex} we make sure +%D that we use (unless overloaded) the settings of \type +%D {mpost}. + +%D First we input John Hobby's metapost plain file. However, +%D because we want to prevent dependency problems and in the +%D end even may use a patched version, we prefer to use a +%D copy, + +if unknown ahangle : + input mp-base.mp ; % input plain.mp ; +else : + let dump = relax ; +fi ; + +input mp-tool.mp ; +input mp-spec.mp ; % will be skipped in mkiv, some day +input mp-core.mp ; +input mp-page.mp ; +input mp-text.mp ; +input mp-txts.mp ; +input mp-shap.mp ; +input mp-butt.mp ; +input mp-char.mp ; +input mp-step.mp ; +input mp-grph.mp ; +input mp-figs.mp ; + +input mp-mlib.mp ; + +if known context_mlib : input mp-chem.mp ; fi ; % only when mkiv + +% mp-form.mp ; +input mp-grid.mp ; +input mp-func.mp ; + +string metafunversion ; + +metafunversion = "metafun" & " " & + 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 ; + +def end = + ; message "" ; message metafunversion ; message "" ; normalend ; +enddef ; + +dump ; endinput . diff --git a/metapost/context/base/mp-back.mp b/metapost/context/base/mp-back.mp new file mode 100644 index 000000000..f49474cf7 --- /dev/null +++ b/metapost/context/base/mp-back.mp @@ -0,0 +1,206 @@ +%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 unknown context_tool : input mp-tool ; fi ; +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/mp-base.mp b/metapost/context/base/mp-base.mp new file mode 100644 index 000000000..d0b3991c8 --- /dev/null +++ b/metapost/context/base/mp-base.mp @@ -0,0 +1,558 @@ +% This is (currently) a 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. (See The METAFONTbook by D.E. Knuth). +% There are also a number of macros for labeling figures, etc. +string base_name, base_version; base_name="plain"; base_version="0.63"; + +message "Preloading the plain mem file, version "&base_version; + +delimiters (); % this makes parentheses behave like parentheses +def upto = step 1 until enddef; % syntactic sugar +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; % right brackets should be loners +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 + +newinternal mitered, rounded, beveled, butt, squared; +mitered:=0; rounded:=1; beveled:=2; % linejoin types +butt:=0; rounded:=1; squared:=2; % linecap types + + +% 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 +color black, white, red, green, blue, background; +black = (0,0,0); +white = (1,1,1); +red = (1,0,0); +green = (0,1,0); +blue = (0,0,1); +background = white; % The user can reset this + +% 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=_ 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_ enddef; % now x_ is near where @# changes from true to false +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 = mexp(46.67432m) enddef; + + + +%% macros for drawing and filling + +def drawoptions(text t) = + def _op_ = t enddef +enddef; + +linejoin:=rounded; % parameters that effect drawing +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; + +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) enddef; + +def penstroke text t = + forsuffixes e = l,r: path_.e:=t; endfor + fill path_.l -- reverse path_.r -- cycle enddef; +path path_.l,path_.r; + + + +%% 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 = + draw _apth t; + fill arrowhead _apth withpen currentpen t; + fill arrowhead reverse _apth withpen currentpen t +enddef; + + + +%% macros for labels + +newinternal bboxmargin; bboxmargin:=2bp; + +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; + +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; +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; + + +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 adminstration + +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; + +newinternal defaultpen; +pickup pencircle scaled .5bp; % set default line width +defaultpen := savepen; diff --git a/metapost/context/base/mp-butt.mp b/metapost/context/base/mp-butt.mp new file mode 100644 index 000000000..cf580211e --- /dev/null +++ b/metapost/context/base/mp-butt.mp @@ -0,0 +1,75 @@ +%D \module +%D [ file=mp-butt.mp, +%D version=2000.05.31, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=buttons, +%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 unknown context_tool : input mp-tool ; fi ; +if known context_butt : endinput ; fi ; + +boolean context_butt ; context_butt := true ; + +def some_button (expr button_type , + button_size , + button_linecolor , + button_fillcolor ) = + + 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 ; + +enddef ; + +endinput ; diff --git a/metapost/context/base/mp-char.mp b/metapost/context/base/mp-char.mp new file mode 100644 index 000000000..786c1f904 --- /dev/null +++ b/metapost/context/base/mp-char.mp @@ -0,0 +1,999 @@ +% to be cleaned up, namespace needed ! ! ! ! ! + +%D \module +%D [ file=mp-char.mp, +%D version=1998.10.10, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=charts, +%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 unknown context_tool : input mp-tool ; fi ; +if unknown context_shap : input mp-shap ; fi ; +if known context_char : endinput ; fi ; + +boolean context_char ; context_char := true ; + +% kan naar elders + +current_position := 0 ; + +def save_text_position (expr p) = % beware: clip shift needed + current_position := current_position + 1 ; + savedata + "\MPposition{" & decimal current_position & "}{" + & decimal xpart p & "}{" + & decimal ypart p & "}%" ; +enddef ; + +%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_path (expr type) == imported from mp-shap + +def show_shapes (expr n) = + + begin_chart(n,8,10) ; + show_con_points := true ; + for i=0 upto 7 : + for j=0 upto 9 : + new_shape(i+1,j+1,i*10+j); + endfor ; + endfor ; + end_chart ; + +enddef ; + +%D connections + +def new_chart = + + 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 ; + +enddef ; + +new_chart ; + +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 ; + dsp_x := 0 ; + dsp_y := 0 ; + 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 = % this is now an mp-tool macro + % 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 smooth_connection (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) +% a shifted (sx*xpart unitvector(b-a),0) + else : + a shifted (0,if ypart a >= ypart b : - fi sy) +% a shifted (0,sy*ypart unitvector(b-a)) + 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 : + smooth_connection(xypoints[i],xypoints[i-1]) .. + controls xypoints[i] and xypoints[i] .. + smooth_connection(xypoints[i],xypoints[i+1]) -- + else : + xypoints[i]-- + fi + endfor + xypoints[xypoint]) +enddef ; + +% vardef connection_path = +% sx := connection_smooth_size/grid_width ; +% sy := connection_smooth_size/grid_height ; +% if reverse_connection : reverse fi +% (for i=1 upto xypoint-1 : xypoints[i] -- endfor xypoints[xypoint]) +% if smooth : cornered max(sx,sy) fi +% enddef ; +% +% primarydef p cornered c = +% if cycle p : +% ((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) +% else : +% ((point 0 of p) -- +% for i=1 upto length(p)-1 : +% (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 +% (point length(p) of p)) +% fi +% 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 up_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 right_to_grid (expr a,b) = + (xpart xypoints[if xpart xypoints[a]>xpart xypoints[b]:a else:b fi], + ypart xypoints[a]) +enddef ; + +% vardef boundingboxfraction(expr p, f) = +% ((boundingbox p) enlarged (-f*bbwidth(p),-f*bbheight(p))) +% 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 : % was bug: xfrom,yto + if not ( ( (i,j)=(xfrom,yfrom) ) or ( (i,j)=(xto,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 ; + %%%% begin experiment + xypoints[3] := xypoints[3] shifted (dsp_x,0) ; + xypoints[4] := xypoints[4] shifted (dsp_x,0) ; + if dsp_y>0 : + xypoints[2] := xypoints[2] shifted (0,dsp_y) ; + xypoints[3] := xypoints[3] shifted (0,dsp_y) ; + elseif dsp_y<0 : + xypoints[4] := xypoints[4] shifted (0,dsp_y) ; + xypoints[5] := xypoints[5] shifted (0,dsp_y) ; + fi + %%%% end experiment + 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 ; + %%%% begin experiment + xypoints[2] := xypoints[2] shifted (dsp_x,0) ; + xypoints[3] := xypoints[3] shifted (dsp_x,0) ; + if dsp_y>0 : + xypoints[3] := xypoints[3] shifted (0,-dsp_y) ; + xypoints[4] := xypoints[4] shifted (0,-dsp_y) ; + elseif dsp_y<0 : + xypoints[3] := xypoints[3] shifted (0,dsp_y) ; + xypoints[4] := xypoints[4] shifted (0,dsp_y) ; + fi + %%%% end experiment + 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 ; + %%%% begin experiment + xypoints[3] := xypoints[3] shifted (dsp_x,0) ; + xypoints[4] := xypoints[4] shifted (dsp_x,0) ; + if dsp_y<0 : + xypoints[2] := xypoints[2] shifted (0,-dsp_y) ; + xypoints[3] := xypoints[3] shifted (0,-dsp_y) ; + elseif dsp_y>0 : + xypoints[4] := xypoints[4] shifted (0,dsp_y) ; + xypoints[5] := xypoints[5] shifted (0,dsp_y) ; + fi + %%%% end experiment + 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) = + new_chart ; + chart_figure := n ; + chart_scale := 1 ; + if chart_figure>0: beginfig(chart_figure) ; fi ; + startsavingdata ; + 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 := p enlarged chart_offset ; + clip currentpicture to p ; + setbounds currentpicture to p ; + savedata + "\MPclippath{" & + decimal xpart llcorner p & "}{" & + decimal ypart llcorner p & "}{" & + decimal xpart urcorner p & "}{" & + decimal ypart urcorner p & "}%" ; + savedata + "\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) & "}%" ; + currentpicture := currentpicture scaled chart_scale ; + stopsavingdata ; + 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_path(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) ; + +end + +%D more testing + +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/base/mp-chem.mp b/metapost/context/base/mp-chem.mp new file mode 100644 index 000000000..c70dafd85 --- /dev/null +++ b/metapost/context/base/mp-chem.mp @@ -0,0 +1,761 @@ +%D \module +%D [ file=mp-chem.mp, +%D version=2009.05.13, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=chemicals, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright=\PRAGMA] +%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 in incomplete and experimental. + +% either consistent setting or not + +if known chem_reset : endinput ; fi ; + +numeric + chem_width, chem_radical_min, chem_radical_max, chem_text_max, chem_circle_radius, + chem_rotation, chem_adjacent, chem_stack, chem_substituent, chem_direction, chem_setting_scale, + chem_setting_offset, chem_text_offset, chem_picture_offset, chem_center_offset, chem_substituent_offset, + chem_setting_l, chem_setting_r, chem_setting_t, chem_setting_b ; + +boolean + chem_setting_axis, + chem_setting_fixedwidth, chem_setting_fixedheight, + chem_doing_pb, chem_text_trace ; + +path + chem_setting_bbox ; + +pair + chem_shift, + chem_adjacent_p, chem_substituent_p, chem_direction_p, chem_move_p ; + +numeric + chem_width[], chem_angle[], chem_start[], chem_initialrot[], chem_initialmov[] ; + +pair + chem_stack_d[], + chem_b_zero[], chem_n_zero[], + chem_r_max[], chem_r_min[], + chem_r_zero[], chem_mr_zero[], chem_pr_zero[], chem_crz_zero[], + chem_rt_zero[], chem_rtt_zero[], chem_rbt_zero[], + chem_mid_zero[] ; + +path + chem_b_path[], chem_bx_path[], chem_eb_path[], chem_sr_path[], chem_br_path[], + chem_sb_path[], chem_msb_path[], chem_psb_path[], + chem_s_path[], chem_ss_path[], chem_mss_path[], chem_pss_path[], + chem_e_path[], chem_sd_path[], chem_bb_path[], chem_oe_path[], + chem_bd_path[], chem_bw_path[], + chem_ddt_path[], chem_ddb_path[], chem_ldt_path[], chem_ldb_path[], chem_rdt_path[], chem_rdb_path[], + chem_dbl_path[], chem_dbr_path[], + chem_ad_path[], chem_au_path[], + chem_r_path[], chem_rl_path[], chem_rr_path[], + chem_rb_path[], chem_prb_path[], chem_mrb_path[], + chem_srl_path[], chem_srr_path[], + chem_msr_path[], chem_psr_path[], + chem_mr_path[], chem_pr_path[], + chem_c_path[], chem_cc_path[], + chem_midt_path[], chem_midb_path[], chem_midst_path[], chem_midsb_path[] ; + +chem_setting_scale := 1 ; +chem_base_width := 40pt ; +chem_text_offset := 3pt ; +chem_center_offset := 6pt ; +chem_picture_offset := 10pt ; +chem_substituent_offset := 10pt ; +chem_radical_min := 1.25 ; +chem_radical_max := 1.50 ; +chem_text_min := 0.75 ; +chem_text_max := 1.75 ; +chem_circle_radius := 0.80 ; +chem_circle_radius := 1.10 ; +chem_rotation := 1 ; +chem_adjacent := 0 ; +chem_substituent := 0 ; +chem_direction := 0 ; +chem_stack_n := 0 ; +chem_doing_pb := false ; +chem_shift := origin ; +chem_dot_factor := 4 ; +chem_text_trace := false ; +chem_bd_n := 4 ; +chem_bw_n := 4 ; +chem_bd_angle := 4 ; +chem_bb_angle := 4 ; + +vardef chem_start_structure(expr n, l, r, t, b, scale, axis, fixedwidth, fixedheight, offset) = + chem_setting_axis := axis ; + chem_setting_l := l * scale ; + chem_setting_r := r * scale ; + chem_setting_t := t * scale ; + chem_setting_b := b * scale ; + chem_setting_fixedwidth := fixedwidth ; + chem_setting_fixedheight := fixedheight ; + chem_setting_offset := offset ; + if scale <> chem_setting_scale : + chem_setting_scale := scale ; + chem_init_all ; + fi ; + chem_rotation := 1 ; + chem_adjacent := 0 ; + chem_substituent := 0 ; + chem_direction := 0 ; + chem_stack_n := 0 ; + chem_doing_pb := false ; + chem_shift := origin ; +enddef ; + +def chem_stop_structure = + currentpicture := currentpicture shifted - chem_shift ; + % axis here + if chem_setting_fixedwidth : + chem_setting_l := - xpart llcorner currentpicture ; + chem_setting_r := xpart urcorner currentpicture ; + fi ; + if chem_setting_fixedheight : + chem_setting_t := ypart urcorner currentpicture ; + chem_setting_b := - ypart llcorner currentpicture ; + fi ; + chem_setting_bbox := + (-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 ; + % maybe put it behind the picture + if chem_setting_axis : + save stp ; stp := chem_base_width/ 2 * chem_setting_scale ; + save siz ; siz := chem_base_width/10 * chem_setting_scale ; + draw (-chem_setting_l,0) -- (chem_setting_r,0) withcolor blue ; + draw (0,-chem_setting_b) -- (0,chem_setting_t) withcolor blue ; + for i = 0 step stp until chem_setting_r : draw (i,-siz) -- (i,siz) withcolor blue ; endfor ; + for i = 0 step -stp until -chem_setting_l : draw (i,-siz) -- (i,siz) withcolor blue ; endfor ; + for i = 0 step stp until chem_setting_t : draw (-siz,i) -- (siz,i) withcolor blue ; endfor ; + for i = 0 step -stp until -chem_setting_b : draw (-siz,i) -- (siz,i) withcolor blue ; endfor ; + draw chem_setting_bbox withcolor blue ; + fi ; + setbounds currentpicture to chem_setting_bbox ; +enddef ; + +def chem_start_component = +enddef ; +def chem_stop_component = +enddef ; + +def chem_pb = +% draw boundingbox currentpicture withpen pencircle scaled 1mm withcolor blue ; +% draw origin withpen pencircle scaled 2mm withcolor blue ; + chem_doing_pb := true ; +enddef ; +def chem_pe = +% draw boundingbox currentpicture withpen pencircle scaled .5mm withcolor red ; +% draw origin withpen pencircle scaled 1mm withcolor red ; + currentpicture := currentpicture shifted - chem_shift ; +% draw origin withpen pencircle scaled .5mm withcolor green ; + chem_shift := origin ; + chem_doing_pb := false ; +enddef ; + +vardef chem_do (expr p) = + if chem_doing_pb : + chem_doing_pb := false ; +% save pp ; pair pp ; pp := point 1 of ((origin -- p) enlonged chem_picture_offset) ; +% currentpicture := currentpicture shifted - pp ; +% chem_shift := chem_shift - center pp ; + currentpicture := currentpicture shifted - p ; + chem_shift := chem_shift - p ; + origin % nullpicture + else : + p + fi +enddef ; + +vardef chem_b (expr n, f, t, r, c) = + chem_draw (n, chem_b_path[n], f, t, r, c) ; +enddef ; +vardef chem_sb (expr n, f, t, r, c) = + chem_draw (n, chem_sb_path[n], f, t, r, c) ; +enddef ; +vardef chem_s (expr n, f, t, r, c) = + chem_draw (n, chem_s_path[n], f, t, r, c) ; +enddef ; +vardef chem_ss (expr n, f, t, r, c) = + chem_draw (n, chem_ss_path[n], f, t, r, c) ; +enddef ; +vardef chem_mid (expr n, r, c) = + chem_draw_fixed (n, chem_midt_path[n], r, c) ; + chem_draw_fixed (n, chem_midb_path[n], r, c) ; +enddef ; +vardef chem_mids (expr n, r, c) = + chem_draw_fixed (n, chem_midst_path[n], r, c) ; + chem_draw_fixed (n, chem_midsb_path[n], r, c) ; +enddef ; +vardef chem_mss (expr n, f, t, r, c) = + chem_draw (n, chem_mss_path[n], f, t, r, c) ; +enddef ; +vardef chem_pss (expr n, f, t, r, c) = + chem_draw (n, chem_pss_path[n], f, t, r, c) ; +enddef ; +vardef chem_msb (expr n, f, t, r, c) = + chem_draw (n, chem_msb_path[n], f, t, r, c) ; +enddef ; +vardef chem_psb (expr n, f, t, r, c) = + chem_draw (n, chem_psb_path[n], f, t, r, c) ; +enddef ; +vardef chem_eb (expr n, f, t, r, c) = + chem_draw (n, chem_eb_path[n], f, t, r, c) ; +enddef ; +vardef chem_db (expr n, f, t, r, c) = + if n = 1 : + chem_draw (n, chem_msb_path [n], f, t, r, c) ; + chem_draw (n, chem_psb_path [n], f, t, r, c) ; + else : + chem_draw (n, chem_dbl_path [n], f, t, r, c) ; + chem_draw (n, chem_dbr_path [n], f, t, r, c) ; + fi ; +enddef ; +vardef chem_er (expr n, f, t, r, c) = + chem_draw (n, chem_rl_path[n], f, t, r, c) ; + chem_draw (n, chem_rr_path[n], f, t, r, c) ; +enddef ; +vardef chem_dr (expr n, f, t, r, c) = + chem_draw (n, chem_srl_path[n], f, t, r, c) ; + chem_draw (n, chem_srr_path[n], f, t, r, c) ; +enddef ; +vardef chem_ad (expr n, f, t, r, c) = + chem_draw_arrow(n, chem_ad_path[n], f, t, r, c) ; +enddef ; +vardef chem_au (expr n, f, t, r, c) = + chem_draw_arrow(n, chem_au_path[n], f, t, r, c) +enddef ; +vardef chem_r (expr n, f, t, r, c) = + if n < 0 : + chem_draw_vertical (n, chem_r_path[n], f, t, r, c) ; + else : + chem_draw (n, chem_r_path[n], f, t, r, c) ; + fi ; +enddef ; +vardef chem_rd (expr n, f, t, r, c) = + chem_dashed_normal (n, chem_r_path[n], f, t, r, c) +enddef ; +vardef chem_mrd (expr n, f, t, r, c) = + chem_dashed_normal (n, chem_mr_path[n], f, t, r, c) +enddef ; +vardef chem_prd (expr n, f, t, r, c) = + chem_dashed_normal (n, chem_pr_path[n], f, t, r, c) +enddef ; +vardef chem_br (expr n, f, t, r, c) = + chem_fill (n, chem_br_path[n], f, t, r, c ) +enddef ; +vardef chem_rb (expr n, f, t, r, c) = + chem_fill (n, chem_rb_path[n], f, t, r, c) +enddef ; +vardef chem_mrb (expr n, f, t, r, c) = + chem_fill (n, chem_mrb_path[n], f, t, r, c) +enddef ; +vardef chem_prb (expr n, f, t, r, c) = + chem_fill (n, chem_prb_path[n], f, t, r, c) +enddef ; +vardef chem_mr (expr n, f, t, r, c) = + if n < 0 : + chem_draw_vertical(n, chem_mr_path[n], f, t, r, c) + else : + chem_draw (n, chem_mr_path[n], f, t, r, c) + fi +enddef ; +vardef chem_pr (expr n, f, t, r, c) = + if n < 0 : + chem_draw_vertical(n, chem_pr_path[n], f, t, r, c) + else : + chem_draw (n, chem_pr_path[n], f, t, r, c) + fi +enddef ; +vardef chem_sr (expr n, f, t, r, c) = + chem_draw (n, chem_sr_path[n], f, t, r, c) +enddef ; +vardef chem_msr (expr n, f, t, r, c) = + chem_draw (n, chem_msr_path[n], f, t, r, c) +enddef ; +vardef chem_psr (expr n, f, t, r, c) = + chem_draw (n, chem_psr_path[n], f, t, r, c) +enddef ; +vardef chem_c (expr n, f, t, r, c) = + chem_draw (n, chem_c_path[n], f, t, r, c) +enddef ; +vardef chem_cc (expr n, f, t, r, c) = + chem_draw (n, chem_cc_path[n], f, f, r, c) +enddef ; +vardef chem_cd (expr n, f, t, r, c) = + chem_dashed_connected (n, chem_c_path[n], f, t, r, c) +enddef ; +vardef chem_ccd (expr n, f, t, r, c) = + chem_dashed_normal (n, chem_cc_path[n], f, f, r, c) +enddef ; +vardef chem_rn (expr n, i, t) = + chem_rt (n,i,t) ; +enddef ; +vardef chem_rtn (expr n, i, t) = + chem_rtt(n,i,t) ; +enddef ; +vardef chem_rbn (expr n, i, t) = + chem_rbt(n,i,t) ; +enddef ; +vardef chem_tb (expr n, f, t, r, c) = % one + chem_draw (n, chem_msb_path[n], f, t, r, c) ; + chem_draw (n, chem_sb_path [n], f, t, r, c) ; + chem_draw (n, chem_psb_path[n], f, t, r, c) ; +enddef ; +vardef chem_ep (expr n, f, t, r, c) = % one + chem_draw (n, chem_e_path[n], f, t, r, c) ; +enddef ; +vardef chem_es (expr n, f, t, r, c) = % one + chem_draw_dot (n, center chem_e_path[n], f, t, r, c) ; +enddef ; +vardef chem_ed (expr n, f, t, r, c) = % one + chem_draw_dot (n, point 0 of chem_e_path[n], f, t, r, c) ; + chem_draw_dot (n, point 1 of chem_e_path[n], f, t, r, c) ; +enddef ; +vardef chem_et (expr n, f, t, r, c) = % one + chem_draw_dot (n, point 0 of chem_e_path[n], f, t, r, c) ; + chem_draw_dot (n, center chem_e_path[n], f, t, r, c) ; + chem_draw_dot (n, point 1 of chem_e_path[n], f, t, r, c) ; +enddef ; +vardef chem_sd (expr n, f, t, r, c) = % one + chem_draw (n, chem_ddt_path[n], f, t, r, c) ; + chem_draw (n, chem_ddb_path[n], f, t, r, c) ; +enddef ; +vardef chem_rdd (expr n, f, t, r, c) = % one + chem_draw (n, chem_ldt_path[n], f, t, r, c) ; + chem_draw (n, chem_ldb_path[n], f, t, r, c) ; + chem_draw (n, chem_psb_path[n], f, t, r, c) ; +enddef ; +vardef chem_ldd (expr n, f, t, r, c) = % one + chem_draw (n, chem_msb_path[n], f, t, r, c) ; + chem_draw (n, chem_rdt_path[n], f, t, r, c) ; + chem_draw (n, chem_rdb_path[n], f, t, r, c) ; +enddef ; +vardef chem_hb (expr n, f, t, r, c) = % one + chem_draw_dot (n, point 0 of chem_sb_path[n], f, t, r, c) ; + chem_draw_dot (n, center chem_sb_path[n], f, t, r, c) ; + chem_draw_dot (n, point 1 of chem_sb_path[n], f, t, r, c) ; +enddef ; +vardef chem_bb (expr n, f, t, r, c) = % one + if n < 0 : + chem_fill (n, chem_bb_path[n], 1, 1, r, c) ; + chem_b (n, f, t, r, c) ; + else : + chem_fill (n, chem_bb_path[n], f, t, r, c) ; + fi ; +enddef ; +vardef chem_oe (expr n, f, t, r, c) = % one + chem_draw (n, chem_oe_path[n], f, t, r, c) ; +enddef ; +vardef chem_bd (expr n, f, t, r, c) = % one + for i=0 upto 5 : + chem_draw (n, subpath (2i,2i+1) of chem_bd_path[n], f, t, r, c) ; + endfor ; +enddef ; +vardef chem_bw (expr n, f, t, r, c) = % one + chem_draw (n, chem_bw_path[n], f, t, r, c) ; +enddef ; + +vardef chem_z_zero@#(text t) = + chem_text@#(t, chem_do(origin)) ; +enddef ; +vardef chem_cz_zero@#(text t) = + chem_text@#(t, chem_do(origin)) ; +enddef ; +vardef chem_z@#(expr n, p) (text t) = + if p = 0 : + chem_text@#(t, chem_do(origin)) ; + else : + chem_text@#(t, chem_do(chem_b_zero[n] rotated chem_ang(n,p))) ; + fi ; +enddef ; +vardef chem_cz@#(expr n, p) (text t) = + if n = 1 : + chem_c_text(t, chem_do(chem_crz_zero[n] rotated chem_ang(n,p))) ; + else : + chem_text@#(t, chem_do(chem_b_zero[n] rotated chem_ang(n,p))) ; + fi ; +enddef ; +vardef chem_midz@#(expr n, p) (text t) = + chem_text@#(t, chem_do(chem_mid_zero[n] rotated chem_ang(n,p))) ; +enddef ; +vardef chem_rz@#(expr n, p) (text t) = + if n < 0 : + % quite special + chem_text@#(t, chem_do(chem_r_zero[n] shifted (chem_b_zero[n] rotated chem_ang(n,p)))) ; + else : + chem_text@#(t, chem_do(chem_r_zero[n] rotated chem_ang(n,p))) ; + fi ; +enddef ; +vardef chem_crz@#(expr n, p) (text tx) = + chem_text(tx, chem_do(chem_crz_zero[n] rotated chem_ang(n,p))) ; +enddef ; +vardef chem_mrz@#(expr n, p) (text t) = + if n < 0 : + % quite special + chem_text@#(t, chem_do(chem_mr_zero[n] shifted (chem_b_zero[n] rotated chem_ang(n,p)))) ; + else : + chem_text@#(t, chem_do(chem_mr_zero[n] rotated chem_ang(n,p))) ; + fi ; +enddef ; +vardef chem_prz@#(expr n, p) (text t) = + if n < 0 : + % quite special + chem_text@#(t, chem_do(chem_pr_zero[n] shifted (chem_b_zero[n] rotated chem_ang(n,p)))) ; + else : + chem_text@#(t, chem_do(chem_pr_zero[n] rotated chem_ang(n,p))) ; + fi ; +enddef ; +vardef chem_rt@#(expr n, p) (text t) = + chem_text@#(t, chem_do(chem_rt_zero[n] rotated chem_ang(n,p))) ; +enddef ; +vardef chem_rtt@#(expr n, p) (text t) = + chem_text@#(t, chem_do(chem_rtt_zero[n] rotated chem_ang(n,p))) ; +enddef ; +vardef chem_rbt@#(expr n, p) (text t) = + chem_text@#(t, chem_do(chem_rbt_zero[n] rotated chem_ang(n,p))) ; +enddef ; +vardef chem_zt@#(expr n, p) (text t) = + if n = 1 : + chem_text@#(t, chem_do(chem_rt_zero[n] rotated chem_ang(n,p))) ; + else : + chem_text@#(t, chem_do(chem_n_zero[n] rotated chem_ang(n,p))) ; + fi ; +enddef ; +vardef chem_zn@#(expr n, p) (text t) = + if n = 1 : + chem_text@#(t, chem_do(chem_rt_zero[n] rotated chem_ang(n,p))) ; + else : + chem_text@#(t, chem_do(chem_n_zero[n] rotated chem_ang(n,p))) ; + fi ; +enddef ; +vardef chem_zbt@#(expr n, p) (text t) = + chem_text@#(t, chem_do(chem_rtt_zero[n] rotated chem_ang(n,p))) ; +enddef ; +vardef chem_zbn@#(expr n, p) (text t) = + chem_text@#(t, chem_do(chem_rtt_zero[n] rotated chem_ang(n,p))) ; +enddef ; +vardef chem_ztt@#(expr n, p) (text t) = + chem_text@#(t, chem_do(chem_rbt_zero[n] rotated chem_ang(n,p))) ; +enddef ; +vardef chem_ztn@#(expr n, p) (text t) = + chem_text@#(t, chem_do(chem_rbt_zero[n] rotated chem_ang(n,p))) ; +enddef ; + +vardef chem_symbol(expr t) = + draw textext(t) ; +enddef ; + +vardef chem_text@#(expr txt, z) = % adapted copy of thelabel@ + save p ; picture p ; + p := textext(txt) ; + p := p + if (labtype@# >= 10) : shifted (0,ypart center p) fi + shifted (z + chem_text_offset*laboff@# - (labxf@#*lrcorner p + labyf@#*ulcorner p + (1-labxf@#-labyf@#)*llcorner p)) ; + if chem_text_trace : + draw z withpen pencircle scaled 2pt withcolor red ; + draw boundingbox p withpen pencircle scaled 1pt withcolor red ; + fi ; + draw p +enddef ; + +vardef chem_c_text(expr txt, z) = % adapted copy of thelabel@ + save p ; picture p ; p := textext(txt) ; + save b ; path b ; b := (boundingbox p) shifted z ; + save a ; pair a ; a := (origin--z) intersection_point b ; + if intersection_found : + draw p shifted (z enlonged arclength(a -- center b)) ; + else : + draw p shifted z ; + fi +% draw b withcolor green ; +% draw a withcolor red ; +enddef ; + +vardef chem_ang (expr n, d) = + ((-1 * (d-1) * chem_angle[n]) + (-chem_rotation+1) * 90 + chem_start[n]) % no ; +enddef ; +vardef chem_rot (expr n, d) = + chem_rotation := d ; +enddef ; +vardef chem_adj (expr n, d) = + chem_adjacent := d ; +enddef ; +vardef chem_sub (expr n, d) = + chem_substituent := d ; +enddef ; +vardef chem_dir (expr n, d) = + if n = 1 : + chem_direction_p := (origin - 2*center(chem_b_path[n] rotated chem_ang(n,d+1))) ; + currentpicture := currentpicture shifted chem_direction_p ; + chem_shift := chem_shift + chem_direction_p ; + fi ; +enddef ; +vardef chem_mov (expr n, d) = + if d = 0 : + currentpicture := currentpicture shifted - chem_shift ; + chem_shift := origin ; + else : + chem_move_p := (origin - 2*center(chem_b_path[n] rotated chem_ang(n,d+chem_initialmov[n]))) ; + currentpicture := currentpicture shifted chem_move_p ; + chem_shift := chem_shift + chem_move_p ; + fi ; +enddef ; +vardef chem_off (expr n, d) = + if (d = 1) or (d = 2) or (d = 8) : % positive + currentpicture := currentpicture shifted (-chem_setting_offset,0) ; + chem_shift := chem_shift + (-chem_setting_offset,0) + elseif (d = 4) or (d = 5) or (d = 6) : % negative + currentpicture := currentpicture shifted ( chem_setting_offset,0) ; + chem_shift := chem_shift + ( chem_setting_offset,0) + fi ; +enddef ; + +vardef chem_set(expr n, m) = + if chem_adjacent > 0 : + chem_adjacent_d := xpart chem_b_zero[n] + xpart chem_b_zero[m] ; + if chem_adjacent = 1 : chem_adjacent_p := (-chem_adjacent_d, 0) ; + elseif chem_adjacent = 2 : chem_adjacent_p := (0, -chem_adjacent_d) ; + elseif chem_adjacent = 3 : chem_adjacent_p := ( chem_adjacent_d, 0) ; + elseif chem_adjacent = 4 : chem_adjacent_p := (0, chem_adjacent_d) ; + else : chem_adjacent_p := origin ; + fi ; + currentpicture := currentpicture shifted chem_adjacent_p ; + chem_shift := chem_shift + chem_adjacent_p ; + chem_adjacent := 0 ; + fi ; + if chem_substituent > 0 : + if m = 1 : + chem_substituent_d := xpart chem_crz_zero[n] + chem_substituent_offset ; + else : + chem_substituent_d := xpart chem_crz_zero[n] + xpart chem_b_zero[m] ; + fi ; + if chem_substituent = 1 : chem_substituent_p := (-chem_substituent_d, 0) ; % - ? + elseif chem_substituent = 2 : chem_substituent_p := (0, chem_substituent_d) ; + elseif chem_substituent = 3 : chem_substituent_p := ( chem_substituent_d, 0) ; + elseif chem_substituent = 4 : chem_substituent_p := (0, -chem_substituent_d) ; + else : chem_substituent_p := origin ; + fi ; + currentpicture := currentpicture shifted chem_substituent_p ; + chem_shift := chem_shift + chem_substituent_p ; + chem_substituent := 0 ; + fi ; + chem_rotation := chem_initialrot[m] ; +enddef ; + +vardef chem_draw (expr n, path_fragment, from_point, to_point, linewidth, linecolor) = + for i:=from_point upto to_point: + draw (path_fragment rotated chem_ang(n,i)) withpen pencircle scaled linewidth withcolor linecolor ; + endfor ; +enddef ; +vardef chem_fill (expr n, path_fragment, from_point, to_point, linewidth, linecolor) = + for i:=from_point upto to_point: + fill (path_fragment rotated chem_ang(n,i)) withpen pencircle scaled 0 withcolor linecolor ; + endfor ; +enddef ; + +vardef chem_dashed_normal (expr n, path_fragment, from_point, to_point, linewidth, linecolor) = + for i:=from_point upto to_point: + draw (path_fragment rotated chem_ang(n,i)) withpen pencircle scaled linewidth withcolor linecolor dashed evenly ; + endfor ; +enddef ; +vardef chem_dashed_connected (expr n, path_fragment, from_point, to_point, linewidth, linecolor) = + draw for i:=from_point upto to_point: + (path_fragment rotated chem_ang(n,i)) if i < to_point : -- fi + endfor withpen pencircle scaled linewidth withcolor linecolor dashed evenly ; +enddef ; +vardef chem_draw_dot (expr n, path_fragment, from_point, to_point, linewidth, linecolor) = + for i:=from_point upto to_point: + draw (path_fragment rotated chem_ang(n,i)) withpen pencircle scaled (chem_dot_factor*linewidth) withcolor linecolor ; + endfor ; +enddef ; +vardef chem_draw_fixed (expr n, path_fragment, linewidth, linecolor) = + draw (path_fragment rotated chem_ang(n,1)) withpen pencircle scaled linewidth withcolor linecolor ; +enddef ; +vardef chem_draw_arrow (expr n, path_fragment, from_point, to_point, linewidth, linecolor) = + for i:=from_point upto to_point: + drawarrow (path_fragment rotated chem_ang(n,i)) withpen pencircle scaled linewidth withcolor linecolor ; + endfor ; +enddef ; +vardef chem_draw_vertical (expr n, path_fragment, from_point, to_point, linewidth, linecolor) = + % quite special + for i:=from_point upto to_point: + draw (path_fragment shifted (chem_b_zero[n] rotated chem_ang(n,i))) withpen pencircle scaled linewidth withcolor linecolor ; + endfor ; +enddef ; + +picture chem_stack_p[] ; +pair chem_stack_shift[] ; + +vardef chem_save = + chem_stack_n := chem_stack_n + 1 ; + chem_stack_p[chem_stack_n] := currentpicture ; + chem_stack_shift[chem_stack_n] := chem_shift ; + chem_shift := origin ; +% chem_adjacent := 0 ; +% chem_substituent := 0 ; +% chem_rotation := 1 ; + currentpicture := nullpicture ; +enddef ; +vardef chem_restore = + if chem_stack_n > 0 : + currentpicture := currentpicture shifted - chem_shift ; + addto chem_stack_p[chem_stack_n] also currentpicture ; + currentpicture := chem_stack_p[chem_stack_n] ; + chem_stack_p[chem_stack_n] := nullpicture ; + chem_shift := chem_stack_shift[chem_stack_n] ; + chem_stack_n := chem_stack_n - 1 ; + fi ; +enddef ; + +def chem_init_some(expr n, ratio, start, initialrot, initialmov) = + chem_width [n] := ratio * chem_base_width * chem_setting_scale ; + chem_angle [n] := 360/abs(n) ; + chem_start [n] := start ; + chem_initialrot[n] := initialrot ; + chem_initialmov[n] := initialmov ; + chem_b_zero [n] := (chem_width[n],0) rotated (chem_angle[n]/2) ; + chem_n_zero [n] := (chem_text_min*chem_width[n],0) rotated (chem_angle[n]/2) ; + chem_r_max [n] := chem_radical_max*chem_b_zero[n] ; + chem_r_path [n] := chem_b_zero[n] -- chem_r_max[n] ; + chem_mr_path [n] := chem_r_path [n] rotatedaround(chem_b_zero[n], (180-chem_angle[n])/2) ; + chem_pr_path [n] := chem_r_path [n] rotatedaround(chem_b_zero[n],-(180-chem_angle[n])/2) ; + chem_r_zero [n] := point 1 of chem_r_path [n] ; + chem_mr_zero [n] := point 1 of chem_mr_path[n] ; + chem_pr_zero [n] := point 1 of chem_pr_path[n] ; + chem_crz_zero [n] := point 1 of (chem_r_path[n] enlonged chem_center_offset) ; + chem_au_path [n] := subpath (0.2,0.8) of (chem_r_max[n] -- (chem_r_max[n] rotated chem_angle[n])) ; + chem_ad_path [n] := reverse(chem_au_path[n]) ; + chem_rt_zero [n] := (((chem_radical_max+chem_radical_min)/2)*chem_width[n],0) rotated (chem_angle[n]/2) ; + chem_rtt_zero [n] := chem_rt_zero[n] rotated + 10 ; + chem_rbt_zero [n] := chem_rt_zero[n] rotated - 10 ; + chem_b_path [n] := reverse(chem_b_zero[n] -- (chem_b_zero[n] rotated -chem_angle[n])) ; + chem_bx_path [n] := reverse(chem_b_zero[n] -- (chem_b_zero[n] rotated -chem_angle[n])) ; % ? + chem_sb_path [n] := subpath (0.25,0.75) of chem_b_path[n] ; + chem_s_path [n] := point 0 of chem_b_path[n] -- point 0 of (chem_b_path[n] rotated (2chem_angle[n])) ; + chem_ss_path [n] := subpath (0.25,0.75) of (chem_s_path[n]) ; + chem_pss_path [n] := subpath (0.00,0.75) of (chem_s_path[n]) ; + chem_mss_path [n] := subpath (0.25,1.00) of (chem_s_path[n]) ; + chem_mid_zero [n] := origin shifted (-.25chem_width[n],0) ; + chem_midst_path[n] := chem_mid_zero[n] -- (chem_width[n],0) rotated ( chem_angle[n] + chem_angle[n]/2) ; + chem_midsb_path[n] := chem_mid_zero[n] -- (chem_width[n],0) rotated (-chem_angle[n] - chem_angle[n]/2) ; + chem_midt_path [n] := subpath (0.25,1.00) of chem_midst_path [n] ; + chem_midb_path [n] := subpath (0.25,1.00) of chem_midsb_path [n] ; + chem_msb_path [n] := subpath (0.00,0.75) of chem_b_path[n] ; + chem_psb_path [n] := subpath (0.25,1.00) of chem_b_path[n] ; + chem_dbl_path [n] := chem_sb_path[n] shifted - (0.05[origin,center chem_sb_path[n]]) ; % parallel + chem_dbr_path [n] := chem_sb_path[n] shifted + (0.05[origin,center chem_sb_path[n]]) ; + chem_eb_path [n] := chem_sb_path[n] shifted - (0.25[origin,center chem_sb_path[n]]) ; + chem_sr_path [n] := chem_radical_min*chem_b_zero[n] -- chem_r_max[n] ; + chem_rl_path [n] := chem_r_path[n] paralleled (chem_base_width/20) ; + chem_rr_path [n] := chem_r_path[n] paralleled -(chem_base_width/20) ; + chem_srl_path [n] := chem_sr_path[n] paralleled (chem_base_width/20) ; + chem_srr_path [n] := chem_sr_path[n] paralleled -(chem_base_width/20) ; + chem_br_path [n] := point 1 of chem_sb_path[n] -- + point 0 of chem_sb_path[n] rotatedaround(point 1 of chem_sb_path[n], -4) -- + point 0 of chem_sb_path[n] rotatedaround(point 1 of chem_sb_path[n], 4) -- cycle ; + chem_rb_path [n] := chem_b_zero[n] -- chem_r_max[n] rotated -2 -- chem_r_max[n] -- chem_r_max[n] rotated 2 -- cycle ; + chem_mrb_path [n] := chem_rb_path[n] rotatedaround(chem_b_zero[n], (180-chem_angle[n])/2) ; + chem_prb_path [n] := chem_rb_path[n] rotatedaround(chem_b_zero[n],-(180-chem_angle[n])/2) ; + chem_msr_path [n] := chem_sr_path[n] rotatedaround(chem_b_zero[n], (180-chem_angle[n])/2) ; + chem_psr_path [n] := chem_sr_path[n] rotatedaround(chem_b_zero[n],-(180-chem_angle[n])/2) ; + % not yet ok: +% chem_c_path [n] := subpath (30/45, -30/45) of (fullcircle scaled (1.25*chem_circle_radius*chem_width[n])); +% chem_cc_path [n] := subpath (30/45,8-30/45) of (fullcircle rotated 90 scaled (1.25*chem_circle_radius*chem_width[n])); + chem_c_path [n] := subpath (30/45, -30/45) of (fullcircle scaled (chem_width[n])); + chem_cc_path [n] := subpath (30/45,8-30/45) of (fullcircle rotated 90 scaled (chem_width[n])); +enddef ; + +def chem_init_three = chem_init_some(3,30/52 ,-60,1,2) ; enddef ; % 60 +def chem_init_four = chem_init_some(4,30/42.5, 0,1,0) ; enddef ; % 45 +def chem_init_five = chem_init_some(5,30/35 , 0,1,0) ; enddef ; % 36 +def chem_init_six = chem_init_some(6, 1 , 0,1,0) ; enddef ; % 30 +def chem_init_eight = chem_init_some(8,30/22.5, 0,1,0) ; enddef ; % 22.5 + +% bb R -R R Z -RZ +RZ + +def chem_init_some_front(expr n, ratio, start, initialrot, initialmov) = + chem_init_some(n, ratio, start, initialrot, initialmov) ; + chem_bb_path [n] := chem_b_path[n] rotated -chem_angle[n] -- chem_b_path[n] -- chem_b_path[n] rotated chem_angle[n] -- + (reverse(chem_b_path[n] shortened (chem_base_width/20))) paralleled (chem_base_width/20) -- + cycle ; + chem_r_max [n] := chem_radical_max*chem_b_zero[n] ; + chem_mr_path [n] := origin -- origin shifted (0,-.25chem_base_width) ; + chem_pr_path [n] := origin -- origin shifted (0, .25*chem_base_width) ; + chem_r_path [n] := point 1 of chem_mr_path[n] -- point 1 of chem_pr_path[n] ; + chem_mr_zero [n] := point 1 of chem_mr_path[n] ; + chem_pr_zero [n] := point 1 of chem_pr_path[n] ; +enddef ; + +def chem_init_five_front = chem_init_some_front(-5,30/35,0,2,0) ; enddef ; % 36 +def chem_init_six_front = chem_init_some_front(-6, 1 ,0,2,0) ; enddef ; % 30 + +vardef chem_init_one = + chem_width [1] := .75 * chem_base_width * chem_setting_scale ; + chem_angle [1] := 360/8 ; + chem_start [1] := 0 ; + chem_initialrot[1] := 1 ; + chem_initialmov[1] := 1 ; + chem_b_zero [1] := (1.75*chem_width[1],0) ; + chem_r_min [1] := chem_radical_min*chem_b_zero[1] ; + chem_r_max [1] := chem_radical_max*chem_b_zero[1] ; + chem_r_path [1] := (.5*chem_width[1],0) -- (1.25*chem_width[1],0) ; + chem_r_zero [1] := point 1 of chem_r_path [1] ; + chem_b_path [1] := chem_r_path[1] rotated + (chem_angle[1]) ; % used for move here + chem_b_zero [1] := chem_r_zero[1] ; + chem_crz_zero [1] := chem_r_zero[1] enlonged chem_center_offset ; + chem_e_path [1] := (.5*chem_width[1],-.25*chem_width[1]) -- (.5*chem_width[1],.25*chem_width[1]) ; + chem_sb_path [1] := chem_r_path [1] ; + chem_msb_path [1] := chem_r_path [1] shifted (0,-.1chem_width[1]) ; + chem_psb_path [1] := chem_r_path [1] shifted (0, .1chem_width[1]) ; + chem_ddt_path [1] := subpath(0,.4) of chem_r_path [1] ; + chem_ddb_path [1] := subpath(.6,1) of chem_r_path [1] ; + chem_ldt_path [1] := chem_ddt_path [1] shifted (0,-.1chem_width[1]) ; % parallel + chem_ldb_path [1] := chem_ddb_path [1] shifted (0,-.1chem_width[1]) ; + chem_rdt_path [1] := chem_ddt_path [1] shifted (0, .1chem_width[1]) ; + chem_rdb_path [1] := chem_ddb_path [1] shifted (0, .1chem_width[1]) ; + save pr ; pair pr[] ; + pr0 := point 0 of chem_r_path[1] ; + pr1 := point 1 of chem_r_path[1] ; + chem_bb_path [1] := pr0 -- (pr1 rotatedaround(pr0,-chem_bb_angle)) -- (pr1 rotatedaround(pr0,chem_bb_angle)) -- cycle ; + chem_oe_path [1] := ((-20,0)--(10,0){up}..(20,10)..(30,0)..(40,-10)..(50.0,0)..(60,10)..(70,0)..(80,-10)..{up}(90,0)--(120,0)) + xsized (.75*chem_width[1]) shifted pr0 ; + chem_rt_zero [1] := point .5 of chem_r_path[1] ; + chem_rtt_zero [1] := chem_rt_zero[1] rotated + (chem_angle[1]/2) ; + chem_rbt_zero [1] := chem_rt_zero[1] rotated - (chem_angle[1]/2) ; + % added by Alan Braslau (adapted to use shared variables): + save p ; pair p[] ; + p0 := pr1 rotatedaround(pr0, -chem_bd_angle) ; + p1 := pr1 rotatedaround(pr0, +chem_bd_angle) ; + p2 := p0 shifted - pr1 ; + p3 := p1 shifted - pr1 ; + chem_bd_path [1] := + p0 -- p1 for i=chem_bd_n downto 0 : + -- p2 shifted (i/chem_bd_n)[pr1,pr0] + -- p3 shifted (i/chem_bd_n)[pr1,pr0] + endfor ; + chem_bw_path [1] := + for i=0 upto chem_bw_n - 1 : + ((i) /chem_bw_n)[pr0,pr1] .. ((i+.25)/chem_bw_n)[pr0,pr1] shifted p2 .. + ((i+.50)/chem_bw_n)[pr0,pr1] .. ((i+.75)/chem_bw_n)[pr0,pr1] shifted -p2 .. + endfor pr1 ; +enddef ; + +def chem_init_all = + chem_init_one ; + chem_init_three ; + chem_init_four ; + chem_init_five ; + chem_init_six ; + chem_init_eight ; + chem_init_five_front ; + chem_init_six_front ; +enddef ; + +chem_init_all ; diff --git a/metapost/context/base/mp-core.mp b/metapost/context/base/mp-core.mp new file mode 100644 index 000000000..7c5d5a1c1 --- /dev/null +++ b/metapost/context/base/mp-core.mp @@ -0,0 +1,1418 @@ + +if unknown context_tool : input mp-tool ; fi ; +if known context_core : endinput ; fi ; + +boolean context_core ; context_core := true ; + +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 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) = + + 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 ; + + 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 ; + % draw TextColumns[1] withcolor green ; + % draw TextAreas[1] withcolor green ; + 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_hang_indent := rh ; + par_hang_after := ra ; + par_indent := ri ; + par_left_skip := rl ; + + pair par_start_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 ; + + 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 ; + + vardef 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 ; + + % def set_multipar (expr i) = + % ((TextAreas[i] leftenlarged -left_skip) rightenlarged -right_skip) + % enddef ; + + vardef set_multipar (expr i) = + ( (TextAreas[i] leftenlarged -left_skip) rightenlarged (-right_skip + if auto_multi_par_hsize : + rw - bbwidth(TextAreas[i]) fi) ) + enddef ; + + vardef top_multi_par(expr p) = + (round(estimated_par_lines(bbheight(p)*par_line_height))=round(bbheight(p))) + enddef ; + + vardef multi_par_tsc(expr p) = + if top_multi_par(p) : TopSkipCorrection else : 0 fi + enddef ; + + vardef estimated_par_lines (expr h) = + round(h/par_line_height) + enddef ; + + vardef 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 + estimated_par_lines(ypart ulxy[fpos] - + ypart llcorner SavedTextAreas[i]) ; + elseif ok : + h := h + estimated_par_lines(bbheight(SavedTextAreas[i])) ; + fi ; + endfor ; + fi ; + if ok : + for i := 1 upto n-1 : + h := h + 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 + estimated_par_lines(ypart ulxy[fpos] - ypart llcorner TextAreas[i]) ; + elseif ok : + h := h + estimated_par_lines(bbheight(TextAreas[i])) ; + fi ; + endfor ; + fi ; + h + fi + enddef ; + + vardef left_top_hang (expr same_area) = + + par_hang_after := ra + 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 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 right_top_hang (expr same_area) = + + par_hang_after := ra + 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 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 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 snapped_multi_pos(urxy[fpos])) + else : + (xpart urcorner multipar, ypart snapped_multi_pos(urxy[fpos])) + fi + enddef ; + + vardef x_left_top_hang (expr i, t) = + par_hang_after := min(0,ra + 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 x_right_top_hang (expr i, t) = + par_hang_after := min(0,ra + 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 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 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 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 right_bottom_hang (expr same_area) = + pair _lr_, _sa_, _pa_ ; + _sa_ := if same_area : 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 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 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 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 - 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 x_right_bottom_hang (expr i, t) = + pair _lr_, _sa_, _pa_ ; + _sa_ := if t : snapped_multi_pos(ulxy[tpos]) else : llcorner multipar fi ; + if (par_hang_indent<0) and (ra>0) : + par_hang_after := max(0,ra - 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 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 := 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,llxy[tpos])) : + + % 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] -- + %urxy[tpos] -- + snapped_multi_pos(urxy[tpos]) -- + %ulxy[fpos] -- + 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 : + + right_bottom_hang(true) -- + right_top_hang(true) -- + snapped_multi_pos(urxy[fpos]) -- + lrxy[fpos] -- + + else : + + llxy[fpos] -- + (xpart urcorner multipar, ypart llxy[fpos]) -- + (xpart urcorner multipar, ypart ulxy[fpos]) -- + snapped_multi_pos(ulxy[fpos]) -- + + fi cycle ; + + save_multipar (i,1,multipar) ; + + multipar := set_multipar(i) ; + + multipar := if obey_multi_par_hang : + + left_bottom_hang(true) -- + llxy[tpos] -- + snapped_multi_pos(ulxy[tpos]) -- + left_top_hang(true) -- + + else : + + (xpart llcorner multipar, ypart llxy[tpos]) -- + llxy[tpos] -- + 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 : + + left_bottom_hang(true) -- + llxy[tpos] -- + %ulxy[tpos] -- + snapped_multi_pos(ulxy[tpos]) -- + right_bottom_hang(true) -- + right_top_hang(true) -- + %urxy[fpos] -- + snapped_multi_pos(urxy[fpos]) -- + lrxy[fpos] -- + left_top_hang(true) -- + + else : + + (xpart llcorner multipar, ypart llxy[tpos]) -- + llxy[tpos] -- + %ulxy[tpos] -- + snapped_multi_pos(ulxy[tpos]) -- + (xpart lrcorner multipar, ypart ulxy[tpos]) -- + (xpart urcorner multipar, ypart urxy[fpos]) -- + %urxy[fpos] -- + 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 : + + left_bottom_hang(false) -- + right_bottom_hang(false) -- + right_top_hang(false) -- + %urxy[fpos] -- + snapped_multi_pos(urxy[fpos]) -- + lrxy[fpos] -- + left_top_hang(false) -- + + else : + + llcorner multipar -- + lrcorner multipar -- + (xpart urcorner multipar, ypart urxy[fpos]) -- + %urxy[fpos] -- + 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,llxy[tpos])) : + + % last one in chain + + nn := i ; + + if obey_multi_par_hang and obey_multi_par_more : + + multipar := + x_left_top_hang(i,true) -- + x_right_top_hang(i,true) -- + x_right_bottom_hang(i,true) -- + snapped_multi_pos(ulxy[tpos]) -- + llxy[tpos] -- + x_left_bottom_hang(i,true) -- + cycle ; + + else : + + multipar := + ulcorner multipar -- + urcorner multipar -- + (xpart lrcorner multipar, ypart urxy[tpos]) -- + 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 := set_multipar(i) ; + + if obey_multi_par_hang and obey_multi_par_more : + + multipar := + x_left_top_hang(i,false) -- + x_right_top_hang(i,false) -- + x_right_bottom_hang(i,false) -- + 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 ; + +color boxgridcolor ; boxgridcolor := .8red ; +color boxlinecolor ; boxlinecolor := .8blue ; +color boxfillcolor ; boxfillcolor := .8white ; +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 withcolor boxlinecolor withpen pencircle scaled boxlinewidth ; + draw lxy -- rxy withcolor boxlinecolor 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 ) withcolor boxgridcolor ; + elseif boxgridtype = 2 : + boxgriddirection := origin ; + draw baseline_grid (i,boxgriddirection,false) withcolor boxgridcolor ; + elseif boxgridtype = 3 : + boxgriddirection := origin ; + draw baseline_grid (i,boxgriddirection,true ) withcolor boxgridcolor ; + draw baseline_grid (i,boxgriddirection,true ) + shifted (0,ExHeight) withcolor boxgridcolor ; + elseif boxgridtype = 4 : + boxgriddirection := origin ; + draw baseline_grid (i,boxgriddirection,true ) + shifted (0,ExHeight/2) withcolor boxgridcolor ; + 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],up,true ) ; % withcolor boxgridcolor ; +% elseif boxgridtype= 2 : +% draw baseline_grid (multipars[i],up,false) ; % withcolor boxgridcolor ; +% elseif boxgridtype= 3 : +% draw baseline_grid (multipars[i],up,true ) ; % withcolor boxgridcolor ; +% draw baseline_grid (multipars[i],up,true ) +% shifted (0,ExHeight) ; % withcolor boxgridcolor ; +% elseif boxgridtype= 4 : +% draw baseline_grid (multipars[i],up,true ) +% shifted (0,ExHeight/2) ; % withcolor boxgridcolor ; +% 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 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) ; % withcolor boxgridcolor ; + elseif boxgridtype= 2 : + draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,false) ; % withcolor boxgridcolor ; + elseif boxgridtype= 3 : + draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) ; % withcolor boxgridcolor ; + draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) shifted (0,ExHeight) ; % withcolor boxgridcolor ; + elseif boxgridtype= 4 : + draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) shifted (0,ExHeight/2) ; % withcolor boxgridcolor ; + 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 withcolor boxfillcolor withpen pencircle scaled (2*boxfilloffset) ; + endgroup ; + else : + fill pp withcolor boxfillcolor ; + fi ; + fi ; + if boxlinetype>0 : + draw pp withcolor boxlinecolor withpen pencircle scaled boxlinewidth ; + fi ; + fi ; +enddef ; + +vardef baseline_grid (expr pxy, pdir, at_baseline) = + if (par_line_height>0) and (bbheight(pxy)>1) and (bbwidth(pxy)>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 (bbwidth(pxy),0) + withpen pencircle scaled boxgridwidth + withcolor boxfillcolor ; + fi ; + draw start -- start shifted (bbwidth(pxy),0) + if boxdashtype > 0 : dashed evenly fi + withpen pencircle scaled boxgridwidth + withcolor boxgridcolor ; + 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(bbheight(pxy),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 bbheight(pxy) : + _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 ; + +endinput ; + +end + +% for Jelle Huisman +% +% \setupcolors[state=start] +% \dontcomplain +% \definecolumnset[example][n=3,distance=5mm] +% \startMPextensions +% multi_column_first_page_hack := true ; +% \stopMPextensions +% \startuseMPgraphic{mpos:par:trick} +% for i=1 upto nofmultipars-1 : draw (rightboundary multipars[i]) shifted (2.5mm, 0) ; endfor ; +% \stopuseMPgraphic +% \definetextbackground[test][mp=mpos:par:trick,method=mpos:par:columnset] +% \starttext +% \definecolumnsetspan[chapter][n=3] +% \startcolumnset[example] +% \startcolumnsetspan[chapter] +% \chapter{Chapter One} +% \stopcolumnsetspan +% \starttextbackground[test] \dorecurse {3}{\input knuth } \stoptextbackground +% \stopcolumnset +% \startcolumnset[example] +% \startcolumnsetspan[chapter] +% \chapter{Chapter One} +% \stopcolumnsetspan +% \starttextbackground[test] \dorecurse {10}{\input knuth } \stoptextbackground +% \stopcolumnset +% \stoptext +% +% fast variant: +% +% \startuseMPgraphic{whatever} +% for i=1 upto NOfTextColumns-1 : +% draw (rightboundary TextColumns[i]) shifted (2.5mm,0) shifted -\MPxy\textanchor ; +% endfor ; +% setbounds currentpicture to OverlayBox ; +% \stopuseMPgraphic +% \defineoverlay[whatever][\useMPgraphic{whatever}] +% \setupbackgrounds[text][background=whatever] diff --git a/metapost/context/base/mp-figs.mp b/metapost/context/base/mp-figs.mp new file mode 100644 index 000000000..da5fa0d16 --- /dev/null +++ b/metapost/context/base/mp-figs.mp @@ -0,0 +1,50 @@ +%D \module +%D [ file=mp-tool.mp, +%D version=2003.01.15, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=figures, +%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 unknown context_tool : input mp-tool ; fi ; +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 ; string s ; s := cleanstring(name) ; + save p ; pair p ; + scantokens( "p := " & "(" & s & "_width" & "," & s & "_height" & ")" ) ; + p +enddef ; + +vardef figurewidth(expr name) = + xpart figuresize(name) +enddef ; + +vardef figureheight(expr name) = + ypart figuresize(name) +enddef ; + +def figuredimensions = figuresize enddef ; % for old times sake + +def naturalfigure(expr name) = + externalfigure name xyscaled(figuresize(name)) +enddef ; + +endinput diff --git a/metapost/context/base/mp-fobg.mp b/metapost/context/base/mp-fobg.mp new file mode 100644 index 000000000..712efe751 --- /dev/null +++ b/metapost/context/base/mp-fobg.mp @@ -0,0 +1,88 @@ +%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 unknown context_tool : input mp-tool ; fi ; +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/mp-form.mp b/metapost/context/base/mp-form.mp new file mode 100644 index 000000000..a65ab6d73 --- /dev/null +++ b/metapost/context/base/mp-form.mp @@ -0,0 +1,403 @@ +% Hans Hagen / October 2000 +% +% This file is mostly a copy from the file format.mp, that +% comes with MetaPost and is written by John Hobby. This file +% is meant to be compatible, but has a few more features, +% controlled by the variables: +% +% fmt_initialize when false, initialization is skipped +% fmt_precision the default accuracy (default=3) +% fmt_separator the pattern separator (default=%) +% fmt_zerocheck activate extra sci notation zero check +% +% instead of a picture, one can format a number in a for TeX +% acceptable input string + +boolean mant_font ; mant_font := true ; % signals graph not to load form + +if known fmt_loaded : expandafter endinput fi ; + boolean fmt_loaded ; fmt_loaded := true ; + +if unknown fmt_precision : + numeric fmt_precision ; fmt_precision := 3 ; +fi ; + +if unknown fmt_initialize : + boolean fmt_initialize ; fmt_initialize := true ; +fi ; + +if unknown fmt_separator : + string fmt_separator ; fmt_separator := "%" ; +fi ; + +if unknown fmt_zerocheck : + boolean fmt_zerocheck ; fmt_zerocheck := false ; +fi ; + +boolean fmt_metapost ; fmt_metapost := true ; % == use old method + +% As said, all clever code is from John, the more stupid +% extensions are mine. The following string variables are +% responsible for the TeX formatting. + +% TeX specs when using TeX instead of pseudo TeX. + +string sFebraise_ ; sFebraise_ := "{" ; +string sFeeraise_ ; sFeeraise_ := "}" ; +string sFebmath_ ; sFebmath_ := "$" ; +string sFeemath_ ; sFeemath_ := "$" ; + +string sFmneg_ ; sFmneg_ := "-" ; +string sFemarker_ ; sFemarker_ := "{\times}10^" ; +string sFeneg_ ; sFeneg_ := "-" ; +string sFe_plus ; sFe_plus := "" ; % "+" + +def sFe_base = Fline_up_("1", sFemarker_) enddef ; + +% Macros for generating typeset pictures of computed numbers +% +% format(f,x) typeset generalized number x using format string f +% Mformat(f,x) like format, but x is in Mlog form (see marith.mp) +% init_numbers(s,m,x,sn,e) choose typeset style given sample sign, mantissa,... +% roundd(x,d) round numeric x to d places right of decimal point +% Fe_base what precedes the exponent for typeset powers of 10 +% Fe_plus plus sign if any for typesetting positive exponents +% Ten_to[] powers of ten for indices 0,1,2,3,4 +% +% New are: +% +% formatstr(f,x) TeX string representing x using format f +% Mformatstr(f,x) like Mformatstr, but x is in Mlog form + +% Other than the above-documented user interface, all +% externally visible names start with F and end with _. + +% Allow big numbers in token lists + +begingroup interim warningcheck := 0 ; + +%%% Load auxiliary macros. + +input string +input marith + +%%% Choosing the Layout %%% + +picture Fmneg_, Femarker_, Feneg_, Fe_base, Fe_plus ; +string Fmfont_, Fefont_ ; +numeric Fmscale_, Fescale_, Feraise_ ; + +% Argument +% +% s is a leading minus sign +% m is a 1-digit mantissa +% x is whatever follows the mantissa +% sn is a leading minus for the exponent, and +% e is a 1-digit exponent. +% +% Numbers in scientific notation are constructed by placing +% these pieces side-by-side; decimal numbers use only m +% and/or s. To get exponents with leading plus signs, assign +% to Fe_plus after calling init_numbers. To do something +% special with a unit mantissa followed by x, assign to +% Fe_base after calling init_numbers. + +vardef init_numbers(expr s, m, x, sn, e) = + Fmneg_ := s ; + for p within m : + Fmfont_ := fontpart p ; + Fmscale_ := xxpart p ; + exitif true ; + endfor + Femarker_ := x ; + Feneg_ := sn ; + for p within e : + Fefont_ := fontpart p ; + Fescale_ := xxpart p ; + Feraise_ := ypart llcorner p ; + exitif true ; + endfor + if fmt_metapost : + Fe_base := Fline_up_("1" infont Fmfont_ scaled Fmscale_, Femarker_) ; + % else : + % sFe_base := Fline_up_("1", sFemarker_) ; + fi ; + Fe_plus := nullpicture ; +enddef ; + +%%% Low-Level Typesetting %%% + +vardef Fmant_(expr x) = %%% adapted by HH %%% + if fmt_metapost : + (decimal abs x infont Fmfont_ scaled Fmscale_) + else : + (decimal abs x) + fi +enddef ; + +vardef Fexp_(expr x) = %%% adapted by HH %%% + if fmt_metapost : + (decimal x infont Fefont_ scaled Fescale_ shifted (0,Feraise_)) + else : + (decimal x) + fi +enddef ; + +vardef Fline_up_(text t_) = %%% adapted by HH %%% + if fmt_metapost : + save p_, c_ ; + picture p_ ; p_ = nullpicture ; + pair c_ ; c_ = (0,0) ; + for q_ = t_ : + addto p_ also q_ if string q_ : infont defaultfont scaled defaultscale fi + shifted c_ ; + c_ := (xpart lrcorner p_, 0) ; + endfor + p_ + else : + "" for q_ = t_ : & q_ endfor + fi +enddef ; + +vardef Fdec_o_(expr x) = %%% adapted by HH %%% + if x<0 : + Fline_up_(if fmt_metapost : Fmneg_ else : sFmneg_ fi, Fmant_(x)) + else : + Fmant_(x) + fi +enddef ; + +vardef Fsci_o_(expr x, e) = %%% adapted by HH %%% + if fmt_metapost : + Fline_up_ + (if x < 0 : Fmneg_,fi + if abs x = 1 : Fe_base else : Fmant_(x), Femarker_ fi, + if e < 0 : Feneg_ else : Fe_plus fi, + Fexp_(abs e)) + else : + Fline_up_ + (if x < 0 : sFmneg_, fi + if abs x = 1 : sFe_base else : Fmant_(x), sFemarker_ fi, + sFebraise_, + if e < 0 : sFeneg_ else : sFe_plus fi, + Fexp_(abs e), + sFeeraise_) + fi +enddef ; + +% Assume prologues=1 implies troff mode. TeX users who want +% prologues on should use some other positive value. The mpx +% file mechanism requires separate input files here. +% +% if fmt_initialize : %%% adapted by HH +% if prologues = 1 : input troffnum else : input texnum fi +% fi ; +% +% wrong assumption, so we need: + +if fmt_initialize : + input texnum ; +fi ; + +%%% Scaling and Rounding %%% + +% Find a pair p where x = xpart p*10**ypart p and either p = +% (0,0) or xpart p is between 1000 and 9999.99999. This is +% the `exponent form' of x. + +vardef Feform_(expr x) = + interim warningcheck := 0 ; + if string x : + Meform(Mlog_str x) + else : + save b, e ; + b = x ; e = 0 ; + if abs b >= 10000 : + (b/10, 1) + elseif b = 0 : + origin + else : + forever : + exitif abs b >= 1000 ; + b := b*10 ; e := e-1 ; + endfor + (b, e) + fi + fi +enddef ; + +% The marith.mp macros include a similar macro Meform that +% converts from `Mlog form' to exponent form. In case +% rounding has made the xpart of an exponent form number too +% large, fix it. + +vardef Feadj_(expr x, y) = + if abs x >= 10000 : (x/10, y+1) else : (x,y) fi +enddef ; + +% Round x to d places right of the decimal point. When d<0, +% round to the nearest multiple of 10 to the -d. + +vardef roundd(expr x, d) = + if abs d > 4 : + if d > 0 : x else : 0 fi + elseif d > 0 : + save i ; i = floor x ; + i + round(Ten_to[d]*(x-i))/Ten_to[d] + else : + round(x/Ten_to[-d])*Ten_to[-d] + fi +enddef ; + +Ten_to0 = 1 ; +Ten_to1 = 10 ; +Ten_to2 = 100 ; +Ten_to3 = 1000 ; +Ten_to4 = 10000 ; + +% Round an exponent form number p to k significant figures. + +primarydef p Fprec_ k = + Feadj_(roundd(xpart p,k-4), ypart p) +enddef ; + +% Round an exponent form number p to k digits right of the +% decimal point. + +primarydef p Fdigs_ k = + Feadj_(roundd(xpart p,k+ypart p), ypart p) +enddef ; + +%%% High-Level Routines %%% + +% The following operators convert z from exponent form and +% produce typeset output: Formsci_ generates scientific +% notation; Formdec_ generates decimal notation; and +% Formgen_ generates whatever is likely to be most compact. + +vardef Formsci_(expr z) = %%% adapted by HH %%% + if fmt_zerocheck and (z = origin) : + Fsci_o_(0,0) + else : + Fsci_o_(xpart z/1000, ypart z + 3) + fi +enddef ; + +vardef Formdec_(expr z) = + if ypart z > 0 : + Formsci_(z) + else : + Fdec_o_ + (xpart z if ypart z >= -4 : + /Ten_to[-ypart z] + else : + for i = ypart z upto -5 : /(10) endfor /10000 + fi) + fi +enddef ; + +vardef Formgen_(expr q) = + clearxy ; (x,y) = q ; + if x = 0 : Formdec_ + elseif y >= -6 : Formdec_ + else : Formsci_ + fi (q) +enddef ; + +def Fset_item_(expr s) = %%% adapted by HH %%% + if s <> "" : + if fmt_metapost : + s infont defaultfont scaled defaultscale, + else : + s, + fi + fi +enddef ; + +% For each format letter, the table below tells how to +% round and typeset a quantity z in exponent form. +% +% e scientific, p significant figures +% p decimal, p digits right of the point +% g decimal or scientific, p sig. figs. +% G decimal or scientific, p digits + +string fmt_[] ; + +fmt_[ASCII "e"] = "Formsci_(z Fprec_ p)" ; +fmt_[ASCII "f"] = "Formdec_(z Fdigs_ p)" ; +fmt_[ASCII "g"] = "Formgen_(z Fprec_ p)" ; +fmt_[ASCII "G"] = "Formgen_(z Fdigs_ p)" ; + +% The format and Mformat macros take a format string f and +% generate typeset output for a numeric quantity x. String f +% should contain a `%' followed by an optional number and one +% of the format letters defined above. The number should be +% an integer giving the precision (default 3). + +vardef isfmtseparator primary c = %%% added by HH %%% + ((c <> fmt_separator) and (c <> "%")) +enddef ; + +def initialize_form_numbers = + initialize_numbers ; % in context: do_initialize_numbers ; +enddef ; + +vardef dofmt_@#(expr f, x) = %%% adapted by HH %%% + initialize_form_numbers ; + if f = "" : + if fmt_metapost : nullpicture else : "" fi + else : + interim warningcheck := 0 ; + save k, l, s, p, z ; + pair z ; z = @#(x) ; + % the next adaption is okay + % k = 1 + cspan(f, fmt_separator <> ) ; + % but best is to support both % and fmt_separator + k = 1 + cspan(f, isfmtseparator) ; + % + l-k = cspan(substring(k,infinity) of f, isdigit) ; + p = if l > k : + scantokens substring(k,l) of f + else : + fmt_precision + fi ; + string s ; s = fmt_[ASCII substring (l,l+1) of f] ; + if unknown s : + if k <= length f : + errmessage("No valid format letter found in "&f) ; + fi + s = if fmt_metapost : "nullpicture" else : "" fi ; + fi + Fline_up_ + (Fset_item_(substring (0,k-1) of f) + if not fmt_metapost : sFebmath_, fi + scantokens s, + if not fmt_metapost : sFeemath_, fi + Fset_item_(substring (l+1,infinity) of f) + if fmt_metapost : nullpicture else : "" fi) + fi + hide (fmt_metapost := true) +enddef ; + +%%% so far %%% + +vardef format (expr f, x) = + fmt_metapost := true ; dofmt_.Feform_(f,x) +enddef ; + +vardef Mformat(expr f, x) = + fmt_metapost := true ; dofmt_.Meform (f,x) +enddef ; + +vardef formatstr (expr f, x) = + fmt_metapost := false ; dofmt_.Feform_(f,x) +enddef ; + +vardef Mformatstr(expr f, x) = + fmt_metapost := false ; dofmt_.Meform (f,x) +enddef ; + +% Restore warningcheck to previous value. + +endgroup ; diff --git a/metapost/context/base/mp-func.mp b/metapost/context/base/mp-func.mp new file mode 100644 index 000000000..d8646ef3b --- /dev/null +++ b/metapost/context/base/mp-func.mp @@ -0,0 +1,59 @@ +%D \module +%D [ file=mp-func.mp, +%D version=2001.12.29, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=function hacks, +%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. + +%D Under construction. + +if unknown context_tool : input mp-tool ; fi ; +if known context_func : endinput ; fi ; + +boolean context_func ; context_func := true ; + +string pathconnectors[] ; + +pathconnectors[0] := "," ; +pathconnectors[1] := "--" ; +pathconnectors[2] := ".." ; +pathconnectors[3] := "..." ; + +vardef function (expr f) (expr u, t, b, e, s) = save x ; numeric x ; + for xx := b step s until e : + hide (x := xx ;) if xx>b : scantokens(pathconnectors[f]) fi + (scantokens(u),scantokens(t)) + endfor +enddef ; + +def punkedfunction = function (1) enddef ; +def curvedfunction = function (2) enddef ; +def tightfunction = function (3) enddef ; + +vardef constructedpath (expr f) (text t) = + save ok ; boolean ok ; ok := false ; + for i=t : + if ok : scantokens(pathconnectors[f]) else : ok := true ; fi i + endfor +enddef ; + +def punkedpath = constructedpath (1) enddef ; +def curvedpath = constructedpath (2) enddef ; +def tightpath = constructedpath (3) enddef ; + +vardef constructedpairs (expr f) (text p) = + save i ; i := -1 ; + forever : exitif unknown p[incr(i)] ; + if i>0 : scantokens(pathconnectors[f]) fi p[i] + endfor +enddef ; + +def punkedpairs = constructedpairs (1) enddef ; +def curvedpairs = constructedpairs (2) enddef ; +def tightpairs = constructedpairs (3) enddef ; diff --git a/metapost/context/base/mp-grid.mp b/metapost/context/base/mp-grid.mp new file mode 100644 index 000000000..f6e843489 --- /dev/null +++ b/metapost/context/base/mp-grid.mp @@ -0,0 +1,145 @@ +%D \module +%D [ file=mp-grid.mp, +%D version=2000.07.10, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=grid support, +%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. + +%D Under construction. + +if unknown context_tool : input mp-tool ; fi ; +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 ; 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 ( do_initialize_numbers ; + for i=Min step Step until Max+grid_eps : + draw textext@#(do_format(Format,i)) shifted (0,i*(Length/Max)) t ; + endfor ; ) +enddef ; + +vardef vlintext@#(expr Min, Max, Step, Length, Format) text t = + image ( do_initialize_numbers ; + for i=Min step Step until Max+grid_eps : + draw textext@#(do_format(Format,i)) shifted (i*(Length/Max),0) t ; + endfor ; ) +enddef ; + +vardef hlogtext@#(expr Min, Max, Step, Length, Format) text t = + image ( do_initialize_numbers ; + for i=max(Min,1) step Step until min(Max,10)+grid_eps : + draw textext@#(do_format(Format,i)) shifted (0,Length*log(i)) t ; + endfor ; ) +enddef ; + +vardef vlogtext@#(expr Min, Max, Step, Length, Format) text t = + image ( do_initialize_numbers ; + for i=max(Min,1) step Step until min(Max,10)+grid_eps : + draw textext@#(do_format(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 ; + +boolean numbers_initialized ; numbers_initialized := false ; + +def do_initialize_numbers = + if not numbers_initialized : + init_numbers ( textext.raw("$-$") , + textext.raw("$1$") , + textext.raw("${\times}10$") , + textext.raw("${}^-$") , + textext.raw("${}^2$") ) ; + numbers_initialized := true ; + fi ; +enddef ; + +def initialize_numbers = + numbers_initialized := false ; do_initialize_numbers ; +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 ; + +def 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/mp-grph.mp b/metapost/context/base/mp-grph.mp new file mode 100644 index 000000000..243b45318 --- /dev/null +++ b/metapost/context/base/mp-grph.mp @@ -0,0 +1,296 @@ +%D \module +%D [ file=mp-grph.mp, +%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 / 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. + +%D Under construction. + +if unknown context_tool : input mp-tool ; fi ; +if known context_grph : endinput ; fi ; + +boolean context_grph ; context_grph := true ; + +string CRLF ; CRLF := char 10 & char 13 ; + +picture _currentpicture_ ; + +def beginfig (expr c) = + begingroup + charcode := c ; + resetfig ; + scantokens extra_beginfig ; +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 ; +string graphictextformat ; graphictextformat := "plain" ; +string graphictextstring ; graphictextstring := "" ; +string graphictextfile ; graphictextfile := "dummy.mpo" ; + +def data_mpo_file = job_name & "-mpgraph.mpo" enddef ; +def data_mpy_file = job_name & "-mpgraph.mpy" enddef ; + +def savegraphictext (expr str) = + if (graphictextstring<>"") : + write graphictextstring to data_mpo_file ; + graphictextstring := "" ; + fi ; + write str to data_mpo_file ; + let erasegraphictextfile = relax ; +enddef ; + +def erasegraphictextfile = + write EOF to data_mpo_file ; + let erasegraphictextfile = relax ; +enddef ; + +extra_beginfig := extra_beginfig & " erasegraphictextfile ;" ; + +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 ; + +def graphictext primary t = + dographictext(t) +enddef ; + +def dographictext (expr t) = + begingroup ; + save figurepicture ; picture figurepicture ; + figurepicture := currentpicture ; currentpicture := nullpicture ; + if graphictextformat<>"" : + graphictextstring := + "% format=" & graphictextformat & CRLF & graphictextstring ; + graphictextformat := "" ; + fi ; + currentgraphictext := currentgraphictext + 1 ; + savegraphictext ("\startTEXpage[scale=10000]" & t & "\stopTEXpage") ; + dofinishgraphictext +enddef ; + +def redographictext primary t = + regraphictext(t) +enddef ; + +def regraphictext (expr t) = + begingroup ; + save figurepicture ; picture figurepicture ; + figurepicture := currentpicture ; currentpicture := nullpicture ; + save currentgraphictext ; numeric currentgraphictext ; + currentgraphictext := t ; + dofinishgraphictext +enddef ; + +%D Believe it or not, but it took me half a day to uncover +%D the following neccessity: +%D +%D \starttypen +%D save withfillcolor, withdrawcolor ; +%D \stoptypen +%D +%D When we have more than one graphictext, these will be +%D defined after the first graphic. For some obscure reason, +%D this means that in the next graphic they will be called, but +%D afterwards the data and boolean are not set. Don't ask me +%D why. + +def dofinishgraphictext text x_op_x = + 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 f_op_f = enddef ; boolean f_color ; f_color := false ; + def d_op_d = enddef ; boolean d_color ; d_color := false ; + def s_op_s = enddef ; boolean s_color ; s_color := false ; + boolean reverse_fill ; reverse_fill := false ; + boolean outline_fill ; outline_fill := false ; + def reversefill = + hide(reverse_fill := true ) + enddef ; + def outlinefill = + hide(outline_fill := true ) + enddef ; + def withshade primary c = + hide(def s_op_s = normalwithshade c enddef ; s_color := true ) + enddef ; + def withfillcolor primary c = + hide(def f_op_f = withcolor c enddef ; f_color := true ) + enddef ; + def withdrawcolor primary c = + hide(def d_op_d = withcolor c enddef ; d_color := true ) + enddef ; + scratchpicture := nullpicture ; + addto scratchpicture doublepath origin x_op_x ; % pre-roll + for i within scratchpicture : % Below here is a dirty tricky test! + if (urcorner dashpart i) = origin : outline_fill := false ; fi ; + endfor ; + scratchpicture := nullpicture ; + readfile(data_mpy_file) ; + scratchpicture := (scratchpicture shifted -llcorner scratchpicture) scaled (1/10) ; + if not d_color and not f_color : d_color := true ; fi + if s_color : d_color := false ; f_color := false ; fi ; + currentpicture := figurepicture ; + if d_color and not reverse_fill : + for i within scratchpicture : + if f_color and outline_fill : + addto currentpicture doublepath pathpart i _op_ x_op_x f_op_f + dashed nullpicture ; + fi ; + if filled i : + addto currentpicture doublepath pathpart i _op_ x_op_x d_op_d ; + fi ; + endfor ; + fi ; + if f_color : + for i within scratchpicture : + if filled i : + addto currentpicture contour pathpart i _op_ x_op_x f_op_f + withpen pencircle scaled 0 ; + fi ; + endfor ; + fi ; + if d_color and reverse_fill : + for i within scratchpicture : + if filled i : + addto currentpicture doublepath pathpart i _op_ x_op_x d_op_d ; + fi ; + endfor ; + fi ; + if s_color : + for i within scratchpicture : + if filled i : + addto currentpicture contour pathpart i _op_ x_op_x s_op_s ; + fi ; + endfor ; + else : + for i within scratchpicture : + if stroked i : + addto currentpicture doublepath pathpart i _op_ x_op_x d_op_d ; + fi ; + endfor ; + fi ; + endgroup ; +enddef ; + +def resetgraphictextdirective = + graphictextstring := "" ; +enddef ; + +def graphictextdirective text t = + graphictextstring := graphictextstring & t & CRLF ; +enddef ; + +endinput + +% example + +input mp-grph ; + + graphictextformat := "context" ; +% graphictextformat := "plain" ; +% graphictextformat := "latex" ; graphictextdirective "\documentclass[]{article}" ; + +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/mp-mlib.mp b/metapost/context/base/mp-mlib.mp new file mode 100644 index 000000000..bf2372ca3 --- /dev/null +++ b/metapost/context/base/mp-mlib.mp @@ -0,0 +1,282 @@ +%D \module +%D [ file=mp-mlib.mp, +%D version=2008.03.21, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=specials, +%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 unknown mplib : endinput ; fi ; +if known context_mlib : endinput ; fi ; + +boolean context_mlib ; context_mlib := true ; + +numeric _tt_w_[], _tt_h_[], _tt_d_[] ; +numeric _tt_n_ ; _tt_n_ := 0 ; +picture _tt_p_ ; _tt_p_ := nullpicture ; +boolean _trial_run_ ; _trial_run_ := false ; + +def resettextexts = + _tt_n_ := 0 ; + _tt_p_ := nullpicture ; +enddef ; + +extra_endfig := ";addto currentpicture also _tt_p_; " & extra_endfig; % was draw _tt_p_ +extra_beginfig := extra_beginfig & "resettextexts;"; + +vardef rawtextext(expr str) = + if str = "" : + nullpicture + elseif _trial_run_ : + image ( + _tt_n_ := _tt_n_ + 1 ; + _tt_p_ := image ( + addto currentpicture also _tt_p_ ; + addto currentpicture doublepath unitsquare withprescript "tf" withpostscript decimal _tt_n_ & ":" & str ; + ) ; + addto currentpicture doublepath unitsquare withpen pencircle scaled 0 ; + ) + else : + image ( + _tt_n_ := _tt_n_ + 1 ; + addto currentpicture doublepath unitsquare + xscaled _tt_w_[_tt_n_] + yscaled (_tt_h_[_tt_n_] + _tt_d_[_tt_n_]) + withprescript "ts" + withpostscript decimal _tt_n_ & ":" & str ; + ) shifted (0,-_tt_d_[_tt_n_]) + fi +enddef ; + +% not ok yet + +pair laboff.d, laboff.dlft, laboff.drt ; % new positional suffixes +pair laboff.origin, laboff.raw ; % graph mess + +laboff.d := laboff ; labxf.d := labxf ; labyf.d := labyf ; +laboff.dlft := laboff.lft ; labxf.dlft := labxf.lft ; labyf.dlft := labyf.lft ; +laboff.drt := laboff.rt ; labxf.drt := labxf.rt ; labyf.drt := labyf.rt ; + +labtype := 0 ; labtype.lft := 1 ; labtype.rt := 2 ; +labtype.bot := 3 ; labtype.top := 4 ; labtype.ulft := 5 ; +labtype.urt := 6 ; labtype.llft := 7 ; labtype.lrt := 8 ; +labtype.d := 10 ; labtype.dlft := 11 ; labtype.drt := 12 ; +labtype.origin := 0 ; labtype.raw := 0 ; + +% laboff.origin = (infinity,infinity) ; labxf.origin := 0 ; labyf.origin := 0 ; +% laboff.raw = (infinity,infinity) ; labxf.raw := 0 ; labyf.raw := 0 ; + +% todo: thelabel.origin("xxxx",origin) (overflows) + +laboff.origin = (0,0) ; labxf.origin := 0 ; labyf.origin := 0 ; +laboff.raw = (0,0) ; labxf.raw := 0 ; labyf.raw := 0 ; + +pair laboff.l ; laboff.l = laboff.lft ; +pair laboff.r ; laboff.r = laboff.rt ; +pair laboff.b ; laboff.b = laboff.bot ; +pair laboff.t ; laboff.t = laboff.top ; +pair laboff.l_t ; laboff.l_t = laboff.ulft ; +pair laboff.r_t ; laboff.r_t = laboff.urt ; +pair laboff.l_b ; laboff.l_b = laboff.llft ; +pair laboff.r_b ; laboff.r_b = laboff.lrt ; +pair laboff.t_l ; laboff.t_l = laboff.ulft ; +pair laboff.t_r ; laboff.t_r = laboff.urt ; +pair laboff.b_l ; laboff.b_l = laboff.llft ; +pair laboff.b_r ; laboff.b_r = laboff.lrt ; + +labxf.l ; labxf.l = labxf.lft ; +labxf.r ; labxf.r = labxf.rt ; +labxf.b ; labxf.b = labxf.bot ; +labxf.t ; labxf.t = labxf.top ; +labxf.l_t ; labxf.l_t = labxf.ulft ; +labxf.r_t ; labxf.r_t = labxf.urt ; +labxf.l_b ; labxf.l_b = labxf.llft ; +labxf.r_b ; labxf.r_b = labxf.lrt ; +labxf.t_l ; labxf.t_l = labxf.ulft ; +labxf.t_r ; labxf.t_r = labxf.urt ; +labxf.b_l ; labxf.b_l = labxf.llft ; +labxf.b_r ; labxf.b_r = labxf.lrt ; + +labyf.l ; labyf.l = labyf.lft ; +labyf.r ; labyf.r = labyf.rt ; +labyf.b ; labyf.b = labyf.bot ; +labyf.t ; labyf.t = labyf.top ; +labyf.l_t ; labyf.l_t = labyf.ulft ; +labyf.r_t ; labyf.r_t = labyf.urt ; +labyf.l_b ; labyf.l_b = labyf.llft ; +labyf.r_b ; labyf.r_b = labyf.lrt ; +labyf.t_l ; labyf.t_l = labyf.ulft ; +labyf.t_r ; labyf.t_r = labyf.urt ; +labyf.b_l ; labyf.b_l = labyf.llft ; +labyf.b_r ; labyf.b_r = labyf.lrt ; + +labtype.l ; labtype.l = labtype.lft ; +labtype.r ; labtype.r = labtype.rt ; +labtype.b ; labtype.b = labtype.bot ; +labtype.t ; labtype.t = labtype.top ; +labtype.l_t ; labtype.l_t = labtype.ulft ; +labtype.r_t ; labtype.r_t = labtype.urt ; +labtype.l_b ; labtype.l_b = labtype.llft ; +labtype.r_b ; labtype.r_b = labtype.lrt ; +labtype.t_l ; labtype.t_l = labtype.ulft ; +labtype.t_r ; labtype.t_r = labtype.urt ; +labtype.b_l ; labtype.b_l = labtype.llft ; +labtype.b_r ; labtype.b_r = labtype.lrt ; + +vardef thetextext@#(expr p,z) = % adapted copy of thelabel@ + if string p : + thetextext@#(rawtextext(p),z) + else : + p + if (labtype@# >= 10) : shifted (0,ypart center p) fi + shifted (z + labeloffset*laboff@# - (labxf@#*lrcorner p + labyf@#*ulcorner p + (1-labxf@#-labyf@#)*llcorner p)) + fi +enddef ; + +vardef textext@#(expr txt) = + interim labeloffset := textextoffset ; + if string txt : + thetextext@#(rawtextext(txt),origin) + else : + thetextext@#(txt,origin) + fi +enddef ; + +% \starttext +% \startMPpage +% numeric value ; value = 123 ; +% label.lft(decimal value,origin) ; +% draw "oeps" infont defaultfont ; +% \stopMPpage +% \stoptext + +vardef thelabel@#(expr s, z) = + save p ; picture p ; + if picture s : + p = s ; + else : + p = textext("\definedfont[" & defaultfont & "]" & s) scaled defaultscale ; + fi ; + p shifted (z + labeloffset*laboff@# - (labxf@#*lrcorner p + labyf@#*ulcorner p + (1-labxf@#-labyf@#)*llcorner p)) +enddef; + +let normalinfont = infont ; + +primarydef str infont name = % very naughty ! + if name = "" : + textext(str) + else : + textext("\definedfont[" & name & "]" & str) + 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, sh ; 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 ; +def withcircularshade (expr a, b, ra, rb, ca, cb) = + withprescript + "cs" + withpostscript + "0 1 " & decimal shadefactor & " " & + colordecimals ca & " " & ddecimal (a shifted shadeoffset) & " " & decimal ra & " " & + colordecimals cb & " " & ddecimal (b shifted shadeoffset) & " " & decimal rb +enddef ; +def withlinearshade (expr a, b, ca, cb) = + withprescript + "ls" + withpostscript + "0 1 " & decimal shadefactor & " " & + colordecimals ca & " " & ddecimal (a shifted shadeoffset) & " " & + colordecimals cb & " " & ddecimal (b shifted shadeoffset) +enddef ; +string _defined_cs_pre_[], _defined_cs_post_[] ; numeric _defined_cs_ ; _defined_cs_:= 0 ; +vardef define_circular_shade (expr a, b, ra, rb, ca, cb) = + _defined_cs_ := _defined_cs_ + 1 ; + _defined_cs_pre_ [_defined_cs_] := "cs" ; + _defined_cs_post_[_defined_cs_] := "0 1 " & decimal shadefactor & " " & + colordecimals ca & " " & ddecimal (a shifted shadeoffset) & " " & decimal ra & " " & + colordecimals cb & " " & ddecimal (b shifted shadeoffset) & " " & decimal rb ; + _defined_cs_ +enddef ; +vardef define_linear_shade (expr a, b, ca, cb) = + _defined_cs_ := _defined_cs_ + 1 ; + _defined_cs_pre_ [_defined_cs_] := "ls" ; + _defined_cs_post_[_defined_cs_] := "0 1 " & decimal shadefactor & " " & + colordecimals ca & " " & ddecimal (a shifted shadeoffset) & " " & + colordecimals cb & " " & ddecimal (b shifted shadeoffset) ; + _defined_cs_ +enddef ; +primarydef p withshade sc = + p withprescript _defined_cs_pre_[sc] withpostscript _defined_cs_post_[sc] +enddef ; +def shadecolor(expr sc) = % obsolete + 1 withprescript _defined_cs_pre_[sc] withpostscript _defined_cs_post_[sc] +enddef ; + +def graphictext primary t = + if _trial_run_ : + let dographictextindeed = nographictext ; + else : + let dographictextindeed = dographictext ; + fi + dographictextindeed(t) +enddef ; +def dographictext (expr t) = + begingroup ; + save figurepicture ; picture figurepicture ; + figurepicture := currentpicture ; currentpicture := nullpicture ; + currentgraphictext := currentgraphictext + 1 ; + dofinishgraphictext +enddef ; +def nographictext (expr t) text rest = + draw unitsquare withprescript "gt" withpostscript t ; +enddef ; +def savegraphictext (expr str) = +enddef ; +def erasegraphictextfile = +enddef ; + +def externalfigure primary filename = + doexternalfigure (filename) +enddef ; +def doexternalfigure (expr filename) text transformation = + draw unitsquare transformation withprescript "fg" withpostscript filename ; +enddef ; + +def register (expr label, width, height, offset) = + draw unitsquare xscaled width yscaled height shifted offset withprescript "ps" withpostscript label ; +enddef ; + +extra_beginfig := extra_beginfig & "currentgraphictext := 0 ; " ; +extra_endfig := extra_endfig & "finishsavingdata ; " ; +extra_endfig := extra_endfig & "resettextexts ; " ; + +boolean cmykcolors ; cmykcolors := true ; +boolean spotcolors ; spotcolors := true ; + +vardef verbatim(expr str) = + ditto & "\detokenize{" & str & "}" & ditto +enddef ; diff --git a/metapost/context/base/mp-page.mp b/metapost/context/base/mp-page.mp new file mode 100644 index 000000000..60bfb1417 --- /dev/null +++ b/metapost/context/base/mp-page.mp @@ -0,0 +1,474 @@ +%D \module +%D [ file=mp-page.mp, +%D version=1999.03.10, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=page enhancements, +%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 unknown context_tool : input mp-tool ; fi ; +if known context_page : endinput ; fi ; + +boolean context_page ; context_page := true ; + +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 ; + +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[] ; + 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 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 ; 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 ; + +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 [][] ; 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 SwapPageState = + if not OnRightPage : + BackSpace := PaperWidth-MakeupWidth-BackSpace ; + CutSpace := PaperWidth-MakeupWidth-CutSpace ; + i := LeftMarginWidth ; + LeftMarginWidth := RightMarginWidth ; + RightMarginWidth := i ; + i := LeftMarginDistance ; + LeftMarginDistance := RightMarginDistance ; + RightMarginDistance := i ; + i := LeftEdgeWidth ; + LeftEdgeWidth := RightEdgeWidth ; + RightEdgeWidth := i ; + i := LeftEdgeDistance ; + LeftEdgeDistance := RightEdgeDistance ; + RightEdgeDistance := i ; + +% 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 ; + +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 = + + if PageStateAvailable : + LoadPageState ; + SwapPageState ; + fi ; + + SetPageAreas ; + BoundPageAreas ; + +enddef ; + +def StopPage = + + BoundPageAreas ; + +enddef ; + +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 ; + +% New: + +def position_anchor_bar(expr p_b_self, p_e_self, y_b_self, y_e_self, h_b_self, d_e_self, + distance, linewidth, linecolor) = + StartPage ; + path p ; p := + if p_b_self=p_e_self : + (xpart ulcorner Field[Text][Text],y_b_self+h_b_self) -- + (xpart llcorner Field[Text][Text],y_e_self-d_e_self) ; + elseif RealPageNumber=p_b_self : + (xpart ulcorner Field[Text][Text],y_b_self+h_b_self) -- + (llcorner Field[Text][Text]) ; + elseif RealPageNumber=p_e_self : + (ulcorner Field[Text][Text]) -- + (xpart llcorner Field[Text][Text],y_e_self-d_e_self) ; + else : + (ulcorner Field[Text][Text]) -- + (llcorner Field[Text][Text]) ; + fi ; + p := p shifted (-llcorner Field[Text][Text]-(distance,0)) ; + interim linecap := butt ; + draw p + withpen pencircle scaled linewidth + withcolor linecolor ; + StopPage ; +enddef ; + +endinput ; diff --git a/metapost/context/base/mp-shap.mp b/metapost/context/base/mp-shap.mp new file mode 100644 index 000000000..0f5fe431d --- /dev/null +++ b/metapost/context/base/mp-shap.mp @@ -0,0 +1,307 @@ +%D \module +%D [ file=mp-shap.mp, +%D version=2000.05.31, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=shapes, +%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 unknown context_tool : input mp-tool ; fi ; +if known context_shap : endinput ; fi ; + +boolean context_shap ; context_shap := true ; + +vardef some_shape_path (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=61 : + border := normal (fullcircle scaled (1.5*yradius) xscaled (grid_height/grid_width)) ; + elseif type=62 : + border := normal (fullcircle scaled (2.0*yradius) xscaled (grid_height/grid_width)) ; + + 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 ) ; + + elseif type=75 : + border := mirror (lly--lry--ury--uly--cycle) ; + elseif type=76 : + border := mirror (ll--lr--ur--uly--cycle) ; + elseif type=77 : + border := mirror (ll--lr--ury--ul--cycle) ; + elseif type=78 : + border := mirror (lly--lr--ur--ul--cycle) ; + elseif type=79 : + border := mirror (ll--lry--ur--ul--cycle) ; + + else : + border := normal (origin--cycle) ; + %border := normal (ll--lr--ur--ul--cycle) ; + fi ; + + border + + endgroup + +enddef; + +def some_shape ( expr shape_type , + shape_width , + shape_height , + shape_linewidth , + shape_linecolor , + shape_fillcolor ) = + + 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 ; + +enddef ; + +vardef drawshape (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 drawline (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 ; + +endinput ; diff --git a/metapost/context/base/mp-spec.mp b/metapost/context/base/mp-spec.mp new file mode 100644 index 000000000..9125b4b8b --- /dev/null +++ b/metapost/context/base/mp-spec.mp @@ -0,0 +1,776 @@ +%D \module +%D [ file=mp-spec.mp, +%D version=1999.6.26, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=special extensions, +%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. + +% Spot colors are not handled by mptopdf ! + +% let graycolor = numeric ; +% let greycolor = numeric ; +% let withanycolor = withcolor ; + +% rgbcolor red ; red := (1,0,0) ; +% rgbcolor green ; green := (0,1,0) ; +% rgbcolor blue ; blue := (0,0,1) ; +% cmykcolor cyan ; cyan := (1,0,0,0) ; +% cmykcolor magenta ; magenta := (0,1,0,0) ; +% cmykcolor yellow ; yellow := (0,0,1,0) ; +% graycolor black ; black := 0 ; % (0) ; +% graycolor white ; white := 1 ; % (1) ; + +% primarydef p withcolor c = +% p withanycolor (c) +% enddef ; + +% fill fullcircle scaled 10cm withcolor cyan ; +% fill fullcircle scaled 7cm withcolor red ; +% fill fullcircle scaled 4cm withcolor white ; + +% (r,g,b) => cmyk : r=123 g= 1 b=hash +% => spot : r=123 g= 2 b=hash +% => transparent rgb : r=123 g= 3 b=hash +% => transparent cmyk : r=123 g= 4 b=hash +% => transparent spot : r=123 g= 5 b=hash +% => rest : r=123 g=n>10 b=whatever + +%D This module is rather preliminary and subjected to +%D changes. Here we closely cooperates with the \METAPOST\ +%D to \PDF\ converter module built in \CONTEXT\ and provides +%D for instance shading. More information can be found in +%D type {supp-mpe.tex}. + +if unknown context_tool : input mp-tool ; fi ; +if known context_spec : endinput ; fi ; + +boolean context_spec ; context_spec := true ; + +numeric _special_counter_ ; _special_counter_ := 0 ; +numeric _color_counter_ ; _color_counter_ := 11 ; % < 10 reserved +numeric _special_signal_ ; _special_signal_ := 123 ; + +numeric _special_div_ ; _special_div_ := 1000 ; + +%D When set to \type {true}, shading will be supported. Some +%D day I will also write an additional directive. + +boolean _inline_specials_ ; _inline_specials_ := false ; + +%D Because we want to output only those specials that are +%D actually used in a figure, we need a bit complicated +%D bookkeeping and collection of specials. At the cost of some +%D obscurity, we now have rather efficient resources. + +string _global_specials_ ; _global_specials_ := "" ; +string _local_specials_ ; _local_specials_ := "" ; + +% vardef add_special_signal = % write the version number +% if (length _global_specials_>0) or (length _local_specials_ >0) : +% special ("%%MetaPostSpecials: 1.0 " & decimal _special_signal_ ) ; +% fi ; +% enddef ; +% +% After some reported problems at the \CONTEXT\ mailing list, +% Taco's came up with: + +% TH: \quotation {Ok, got it. There is a bug in mp-spec.mp (inside metafun). +% Because of a wrapping number, it fails to recognize the fact that there +% are embedded specials at all.} The corrected definition is: + +vardef add_special_signal = % write the version number + if (length _global_specials_ <> 0) or (length _local_specials_ <> 0) : + special ("%%MetaPostSpecials: 2.0 " & decimal _special_signal_ & " " & decimal _special_div_) ; + fi ; +enddef ; + +% \quotation {It now tests for \quote {not equal to zero} instead of +% \quote {larger than zero}: because of all the included files, the +% string \type {_local_specials_} becomes longer than the maximum number +% \quote {length} can return, so it returns -32768 instead, and that is +% of course less than zero.} + +vardef add_extra_specials = + scantokens _global_specials_ ; + scantokens _local_specials_ ; +enddef ; + +vardef reset_extra_specials = + % only local ones + _local_specials_ := "" ; +enddef ; + +boolean insidefigure ; insidefigure := false ; + +% todo: alleen als special gebruikt flush + +extra_beginfig := + " insidefigure := true ; " & + " reset_extra_specials ; " & + extra_beginfig & + " ; " ; + +extra_endfig := + " ; " & + " add_special_signal ; " & + extra_endfig & + " add_extra_specials ; " & + " reset_extra_specials ; " & + " insidefigure := false ; " ; + +def set_extra_special (expr s) = + if insidefigure : + _local_specials_ := _local_specials_ & s ; + else : + _global_specials_ := _global_specials_ & s ; + fi +enddef ; + +def flush_special (expr typ, siz, dat) = + _special_counter_ := _special_counter_ + 1 ; + if _inline_specials_ : + set_extra_special + ( "special " + & "(" & ditto + & dat & " " + & decimal _special_counter_ & " " + & decimal typ & " " + & decimal siz + & " special" + & ditto & ");" ) ; + else : + set_extra_special + ( "special " + & "(" & ditto + & "%%MetaPostSpecial: " + & decimal siz & " " + & dat & " " + & decimal _special_counter_ & " " + & decimal typ + & ditto & ");" ) ; + fi ; +enddef ; + +%D The next hack is needed in case you use a version of +%D \METAPOST\ that does not provide you the means to configure +%D the buffer size. Patrick Gundlach suggested to use arrays +%D in this case. + +boolean bufferhack ; bufferhack := false ; % true ; + +if bufferhack : + + string _global_specials_[] ; numeric _nof_global_specials_ ; + string _local_specials_[] ; numeric _nof_local_specials_ ; + + _nof_global_specials_ := _nof_local_specials_ := 0 ; + + vardef add_special_signal = % write the version number + if (_nof_global_specials_>0) or (_nof_local_specials_>0) : + special ("%%MetaPostSpecials: 1.0 " & decimal _special_signal_ ) ; + fi ; + enddef ; + + vardef add_extra_specials = + for i=1 upto _nof_global_specials_ : + scantokens _global_specials_[i] ; + endfor; + for i=1 upto _nof_local_specials_ : + scantokens _local_specials_[i] ; + endfor; + enddef ; + + vardef reset_extra_specials = + string _local_specials_[] ; _nof_local_specials_ := 0 ; + enddef ; + + def set_extra_special (expr s) = + if insidefigure : + _local_specials_[incr(_nof_local_specials_)] := s ; + else : + _global_specials_[incr(_nof_global_specials_)] := s ; + fi + enddef ; + +fi ; + +%D So far for this hack. + +%D Shade allocation. + +newinternal shadefactor ; shadefactor := 1 ; + +pair shadeoffset ; shadeoffset := origin ; + +% vardef define_linear_shade (expr a, b, ca, cb) = +% flush_special(30, 15, "0 1 " & decimal shadefactor & " " & +% dddecimal ca & " " & ddecimal (a shifted shadeoffset) & " " & +% dddecimal cb & " " & ddecimal (b shifted shadeoffset) ) ; +% _special_counter_ +% enddef ; + +% vardef define_circular_shade (expr a, b, ra, rb, ca, cb) = +% flush_special(31, 17, "0 1 " & decimal shadefactor & " " & +% dddecimal ca & " " & ddecimal (a shifted shadeoffset) & " " & decimal ra & " " & +% dddecimal cb & " " & ddecimal (b shifted shadeoffset) & " " & decimal rb ) ; +% _special_counter_ +% enddef ; + +% these tests are not yet robust for new gray/cmyk features; +% +% - we need to get rid of cmykcolor() and + +vardef _is_cmyk_(expr c) = + (redpart c = _special_signal_/_special_div_) and (greenpart c = 1/_special_div_) +enddef ; +vardef _is_spot_(expr c) = + (redpart c = _special_signal_/_special_div_) and (greenpart c = 2/_special_div_) +enddef ; +vardef _is_gray_(expr c) = + (redpart c = greenpart c) and (greenpart c = bluepart c) +enddef ; + +numeric mp_shade_version ; mp_shade_version := 2 ; % more colors, needs new backend + +vardef define_linear_shade (expr a, b, ca, cb) = + save cmyk_a, cmyk_b ; boolean cmyk_a, cmyk_b ; + save gray_a, gray_b ; boolean gray_a, gray_b ; + cmyk_a := _is_cmyk_(ca) ; gray_a := _is_gray_(ca) ; + cmyk_b := _is_cmyk_(cb) ; gray_b := _is_gray_(cb) ; + if (mp_shade_version > 1) and cmyk_a and cmyk_b : + flush_special(32, 17, "0 1 " & decimal shadefactor & " " & + cmykcolorpattern[bluepart ca] & " " & ddecimal (a shifted shadeoffset) & " " & + cmykcolorpattern[bluepart cb] & " " & ddecimal (b shifted shadeoffset) ) ; + elseif (mp_shade_version > 1) and cmyk_a and gray_b : + save cg ; color cg ; cg := cmyk(0,0,0,1-greenpart cb) ; + flush_special(32, 17, "0 1 " & decimal shadefactor & " " & + cmykcolorpattern[bluepart ca] & " " & ddecimal (a shifted shadeoffset) & " " & + cmykcolorpattern[bluepart cg] & " " & ddecimal (b shifted shadeoffset) ) ; + elseif (mp_shade_version > 1) and gray_a and cmyk_b : + save cg ; color cg ; cg := cmyk(0,0,0,1-greenpart ca) ; + flush_special(32, 17, "0 1 " & decimal shadefactor & " " & + cmykcolorpattern[bluepart cg] & " " & ddecimal (a shifted shadeoffset) & " " & + cmykcolorpattern[bluepart cb] & " " & ddecimal (b shifted shadeoffset) ) ; + elseif (mp_shade_version > 1) and _is_spot_(ca) and _is_spot_(cb) : + flush_special(34, 17, "0 1 " & decimal shadefactor & " " & + spotcolorpattern[bluepart ca] & " " & ddecimal (a shifted shadeoffset) & " " & + spotcolorpattern[bluepart cb] & " " & ddecimal (b shifted shadeoffset) ) ; + else : + flush_special(30, 15, "0 1 " & decimal shadefactor & " " & + dddecimal ca & " " & ddecimal (a shifted shadeoffset) & " " & + dddecimal cb & " " & ddecimal (b shifted shadeoffset) ) ; + fi ; + _special_counter_ +enddef ; + +vardef define_circular_shade (expr a, b, ra, rb, ca, cb) = + save cmyk_a, cmyk_b ; boolean cmyk_a, cmyk_b ; + save gray_a, gray_b ; boolean gray_a, gray_b ; + cmyk_a := _is_cmyk_(ca) ; gray_a := _is_gray_(ca) ; + cmyk_b := _is_cmyk_(cb) ; gray_b := _is_gray_(cb) ; + if (mp_shade_version > 1) and cmyk_a and cmyk_b : + flush_special(33, 19, "0 1 " & decimal shadefactor & " " & + cmykcolorpattern[bluepart ca] & " " & ddecimal (a shifted shadeoffset) & " " & decimal ra & " " & + cmykcolorpattern[bluepart cb] & " " & ddecimal (b shifted shadeoffset) & " " & decimal rb ) ; + elseif (mp_shade_version > 1) and cmyk_a and gray_b : + save cg ; color cg ; cg := cmyk(0,0,0,1-greenpart cb) ; + flush_special(33, 19, "0 1 " & decimal shadefactor & " " & + cmykcolorpattern[bluepart ca] & " " & ddecimal (a shifted shadeoffset) & " " & decimal ra & " " & + cmykcolorpattern[bluepart cg] & " " & ddecimal (b shifted shadeoffset) & " " & decimal rb ) ; + elseif (mp_shade_version > 1) and gray_a and cmyk_b : + save cg ; color cg ; cg := cmyk(0,0,0,1-greenpart ca) ; + flush_special(33, 19, "0 1 " & decimal shadefactor & " " & + cmykcolorpattern[bluepart cg] & " " & ddecimal (a shifted shadeoffset) & " " & decimal ra & " " & + cmykcolorpattern[bluepart cb] & " " & ddecimal (b shifted shadeoffset) & " " & decimal rb ) ; + elseif (mp_shade_version > 1) and _is_spot_(ca) and _is_spot_(cb) : + flush_special(35, 19, "0 1 " & decimal shadefactor & " " & + spotcolorpattern[bluepart ca] & " " & ddecimal (a shifted shadeoffset) & " " & decimal ra & " " & + spotcolorpattern[bluepart cb] & " " & ddecimal (b shifted shadeoffset) & " " & decimal rb ) ; + else : + flush_special(31, 17, "0 1 " & decimal shadefactor & " " & + dddecimal ca & " " & ddecimal (a shifted shadeoffset) & " " & decimal ra & " " & + dddecimal cb & " " & ddecimal (b shifted shadeoffset) & " " & decimal rb ) ; + fi ; + _special_counter_ +enddef ; + +%D A few predefined shading macros. + +boolean trace_shades ; trace_shades := false ; + +% if (n=1) : a := llcorner p ; b := urcorner p ; +% elseif (n=2) : a := llcorner p ; b := ulcorner p ; +% elseif (n=3) : a := lrcorner p ; b := ulcorner p ; +% else : a := llcorner p ; b := lrcorner p ; +% fi ; + +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 linear_shade (expr p, n, ca, cb) = + begingroup ; + save a, b, sh ; pair a, b ; + set_linear_vector(a,b)(p,n) ; + fill p withshade define_linear_shade (a,b,ca,cb) ; + if trace_shades : + drawarrow a -- b withpen pencircle scaled 1pt withcolor .5white ; + fi ; + endgroup ; +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 withshade define_circular_shade(ab,ab,0,r,ca,cb) ; + if trace_shades : + drawarrow ab -- ab shifted (0,r) withpen pencircle scaled 1pt withcolor .5white ; + fi ; + endgroup ; +enddef ; + +vardef predefined_linear_shade (expr p, n, ca, cb) = + save a, b, sh ; pair a, b ; + set_linear_vector(a,b)(p,n) ; + set_shade_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 ; + +%D Since a \type {fill p withshade s} syntax looks better +%D than some macro, we implement a new primary. + +primarydef p withshade sc = % == p withcolor shadecolor(sh) + hide (_color_counter_ := _color_counter_ + 1) + p withcolor (_special_signal_/_special_div_,_color_counter_/_special_div_,sc/_special_div_) +enddef ; + +vardef shadecolor(expr sc) = + hide (_color_counter_ := _color_counter_ + 1) + (_special_signal_/_special_div_,_color_counter_/_special_div_,sc/_special_div_) +enddef ; + +%D Figure inclusion. + +%numeric cef ; cef := 0 ; + +def externalfigure primary filename = + doexternalfigure (filename) +enddef ; + +def doexternalfigure (expr filename) text transformation = + begingroup ; save p, t ; picture p ; transform t ; + p := nullpicture ; t := identity transformation ; + flush_special(10, 9, + dddecimal (xxpart t, yxpart t, xypart t) & " " & + dddecimal (yypart t, xpart t, ypart t) & " " & filename) ; + addto p contour unitsquare scaled 0 ; + setbounds p to unitsquare transformed t ; + _color_counter_ := _color_counter_ + 1 ; + draw p withcolor (_special_signal_/_special_div_,_color_counter_/_special_div_,_special_counter_/_special_div_) ; + endgroup ; +enddef ; + +%D Experimental: + +%numeric currenthyperlink ; currenthyperlink := 0 ; + +def hyperlink primary t = dohyperlink(t) enddef ; +def hyperpath primary t = dohyperpath(t) enddef ; + +def dohyperlink (expr destination) text transformation = + begingroup ; save somepath ; path somepath ; + somepath := fullsquare transformation ; + dohyperpath(destination) somepath ; + endgroup ; +enddef ; + +def dohyperpath (expr destination) expr somepath = + begingroup ; + flush_special(20, 7, + ddecimal (xpart llcorner somepath, ypart llcorner somepath) & " " & + ddecimal (xpart urcorner somepath, ypart urcorner somepath) & " " & destination) ; + _color_counter_ := _color_counter_ + 1 ; + fill boundingbox unitsquare scaled 0 withcolor + (_special_signal_/_special_div_,_color_counter_/_special_div_,_special_counter_/_special_div_) ; + endgroup ; +enddef ; + +% \setupinteraction[state=start] +% \setupcolors [state=start] +% +% Hello There! \blank +% +% \startMPcode +% pickup pencircle scaled 5 ; +% draw fullcircle scaled 4cm withcolor red ; +% hyperpath "nextpage" boundingbox currentpicture ; +% draw origin withcolor blue ; +% \stopMPcode +% +% \blank Does it work or not? +% +% \startMPcode +% pickup pencircle scaled 5 ; +% draw fullcircle scaled 4cm withcolor red ; +% hyperpath "nextpage" fullcircle scaled 4cm ; +% draw origin withcolor blue ; +% draw fullcircle scaled 4cm shifted (1cm,1cm); +% \stopMPcode +% +% \blank Does it work or not? \page Hello There! \blank +% +% \startMPcode +% pickup pencircle scaled 5 ; +% draw fullcircle scaled 2cm shifted (-2cm,-1cm) ; +% draw fullcircle scaled 3cm shifted (2cm,1cm) withcolor red ; +% draw fullcircle scaled 1cm ; +% hyperlink "previouspage" scaled 3cm shifted (2cm,1cm) ; +% draw origin withcolor blue ; +% \stopMPcode +% +% \blank Does it work or not? + +_cmyk_counter_ := 0 ; + +extra_endfig := " ; resetcmykcolors ; " & extra_endfig ; + +def resetcmykcolors = + numeric cmykcolorhash[][][][] ; +enddef ; + +resetcmykcolors ; boolean cmykcolors ; cmykcolors := false ; % true + +string cmykcolorpattern[] ; % needed for transparancies + +vardef cmyk(expr c,m,y,k) = + if cmykcolors : + save ok ; boolean ok ; + if unknown cmykcolorhash[c][m][y][k] : + ok := false ; % not yet defined + elseif cmykcolorhash[c][m][y][k] = -1 : + ok := false ; % locally defined and undefined + else : + ok := true ; % globally already defined + fi ; + if not ok : +% save s ; string s ; s := dddecimal (c,m,y) & " " & decimal k ; + save s ; string s ; s := ddddecimal (c,m,y,k) ; + _cmyk_counter_ := _cmyk_counter_ + 1 ; + cmykcolorpattern[_cmyk_counter_/_special_div_] := s ; + cmykcolorhash[c][m][y][k] := _cmyk_counter_ ; + flush_special(1, 7, decimal _cmyk_counter_ & " " & s) ; + _local_specials_ := _local_specials_ & + " cmykcolorhash[" & decimal c & "][" & decimal m & + "][" & decimal y & "][" & decimal k & "] := -1 ; " ; + fi ; + (_special_signal_/_special_div_,1/_special_div_,cmykcolorhash[c][m][y][k]/_special_div_) + else : + (1-c-k,1-m-k,1-y-k) + fi +enddef ; + +% newcolor truecyan, truemagenta, trueyellow ; +% +% truecyan = (1,0,0,0) ; +% truemagenta = (0,1,0,0) ; +% trueyellow = (0,0,1,0) ; + +%D Spot colors + +_spotcolor_counter_ := 0 ; +_spotcolor_number_ := 0 ; + +extra_endfig := " ; resetspotcolors ; " & extra_endfig ; + +def resetspotcolors = + numeric spotcolorhash[][] ; +enddef ; + +resetspotcolors ; boolean spotcolors ; spotcolors := false ; % true + +string spotcolorpattern[] ; % needed for transparancies + +vardef spotcolor(expr p, s) = + multitonecolor(p, 1, "", decimal s) +enddef ; + +vardef multitonecolor(expr n, f, d, p) = % name fractions names factors + if spotcolors : + save ok, pc_tag ; boolean ok ; string pc_tag ; + pc_tag := "_pct_" & n ; + if not unstringed(pc_tag) : + _spotcolor_number_ := _spotcolor_number_ + 1 ; + setunstringed(pc_tag,_spotcolor_number_) ; + fi ; + pp := getunstringed(pc_tag) ; + pc_tag := "_pct_"& decimal f & "_" & if d = "" : n else : d fi & "_" & p ; % check for d empty + if not unstringed(pc_tag) : + _spotcolor_number_ := _spotcolor_number_ + 1 ; + setunstringed(pc_tag,_spotcolor_number_) ; + fi ; + ps := getunstringed(pc_tag) ; + if unknown spotcolorhash[pp][ps] : + ok := false ; % not yet defined + elseif spotcolorhash[pp][ps] = -1 : + ok := false ; % locally defined and undefined + else : + ok := true ; % globally already defined + fi ; + if not ok : + save ss ; string ss ; ss := n & " " & decimal f & " " & if d = "" : n else : d fi & " " & p ; + _spotcolor_counter_ := _spotcolor_counter_ + 1 ; + spotcolorpattern[_spotcolor_counter_/_special_div_] := ss ; + spotcolorhash[pp][ps] := _spotcolor_counter_ ; + flush_special(2, 7, decimal _spotcolor_counter_ & " " & ss) ; + _local_specials_ := _local_specials_ & + "spotcolorhash["&decimal pp&"]["&decimal ps&"]:=-1;" ; + fi ; + (_special_signal_/_special_div_,2/_special_div_,spotcolorhash[pp][ps]/_special_div_) + else : + .5white + fi +enddef ; + +%D Transparency + +normaltransparent := 1 ; multiplytransparent := 2 ; +screentransparent := 3 ; overlaytransparent := 4 ; +softlighttransparent := 5 ; hardlighttransparent := 6 ; +colordodgetransparent := 7 ; colorburntransparent := 8 ; +darkentransparent := 9 ; lightentransparent := 10 ; +differencetransparent := 11 ; exclusiontransparent := 12 ; + +% nottransparent := 0 ; +% compatibletransparent := 99 ; + +% fill fullcircle scaled 10cm withcolor transparant(8,.3,red) ; + +vardef transparent(expr n, t, c) = + save s, ss, nn, cc, is_cmyk, is_spot, ok ; + string s, ss ; numeric nn ; color cc ; boolean is_cmyk, is_spot, ok ; + % transparancy type + if string n : + if expandafter known scantokens(n&"transparent") : + nn := scantokens(n&"transparent") ; + else : + nn := 0 ; + fi + else : % nn := min(n,13) + nn := if n<13 : n else : nn := 0 fi ; + fi ; + % we need to expand the color (can be cmyk(..) or predefined) + cc := c ; % expand color + % check for cmyk special + is_cmyk := (redpart cc = _special_signal_/_special_div_) + and (greenpart cc = 1/_special_div_) ; + is_spot := (redpart cc = _special_signal_/_special_div_) + and (greenpart cc = 2/_special_div_) ; + % build special string, fetch cmyk components + s := decimal nn & " " & decimal t & " " & + if is_cmyk : cmykcolorpattern[bluepart cc] + elseif is_spot : spotcolorpattern[bluepart cc] + else : dddecimal cc fi ; + % check if this one is already used + ss := cleanstring("tr_" & s) ; + % we now have rather unique names, i.e. a color spec of .234 becomes + % tr..._234.... and metapost gives a number overflow (parse error) + % for variables like tr_12345678 which may result from many decimal + % positions (imo mp bug) + ss := asciistring(ss) ; + % efficiency hack + if expandafter unknown scantokens(ss) : + ok := false ; % not yet defined + elseif scantokens(ss) < 0 : + ok := false ; % locally defined and undefined + else : + ok := true ; % globally already defined + fi ; + if not ok : + if is_spot : + flush_special(5, 8, s) ; + elseif is_cmyk : + flush_special(4, 8, s) ; + else : + flush_special(3, 7, s) ; + fi ; + scantokens(ss) := _special_counter_ ; + _local_specials_ := _local_specials_ & + "scantokens(" & ditto & ss & ditto & ") := -1 ;" ; + fi ; + % go ahead + if is_spot : + (_special_signal_/_special_div_,5/_special_div_,scantokens(ss)/_special_div_) + elseif is_cmyk : + (_special_signal_/_special_div_,4/_special_div_,scantokens(ss)/_special_div_) + else : + (_special_signal_/_special_div_,3/_special_div_,scantokens(ss)/_special_div_) + fi +enddef ; + +%D This function returns true of false, dependent on transparency. + +vardef is_transparent(text t) = + begingroup ; save transparent ; save _c_, _b_ ; + vardef transparent(expr nn, tt, cc) = _b_ := true ; cc enddef ; + boolean _b_ ; _b_ := false ; + color _c_ ; _c_ := t ; _b_ + endgroup +enddef ; + +%D This function returns the not transparent color. + +vardef not_transparent(text t) = + begingroup ; save transparent ; + vardef transparent(expr nn, tt, cc) = cc enddef ; + t endgroup +enddef ; + +%D Basic position tracking: + +def register (expr label, width, height, offset) = + begingroup ; + flush_special(50, 7, + ddecimal offset & " " & + decimal width & " " & + decimal height & " " & label) ; + endgroup ; +enddef ; + +%D We cannot scale cmyk colors directly since this spoils +%D the trigger signal (such colors are no real colors). + +vardef scaledcmyk(expr c,m,y,k,sf) = + cmyk(sf*c,sf*m,sf*y,sf*k) +enddef ; + +vardef scaledcmykasrgb(expr c,m,y,k,sf) = + (sf*(1-c-k,1-m-k,1-y-k)) +enddef ; + +vardef scaledrgbascmyk(expr c,m,y,k,sf) = + scaledcmyk(1-c,1-m,1-y,0,sf) +enddef ; + +vardef scaledrgb(expr r,g,b,sf) = + (sf*(r,g,b)) +enddef ; + +vardef scaledgray(expr s,sf) = + (sf*(s,s,s)) +enddef ; + +% spotcolor is already scaled + +endinput ; + +% just an exercise (due to a question by Chof on the context mailing list); scaling of +% 'special' colors is not possible and the next solution is incomplete (spot colors, +% transparency, etc); watch the the tricky chained macro construction + +% vardef normalgray(expr s ) = (s,s,s) enddef ; +% vardef normalrgb (expr r,g,b ) = (r,g,b) enddef ; +% vardef normalcmyk(expr c,m,y,k) = if cmykcolors : save ok ; boolean ok ; if unknown cmykcolorhash[c][m][y][k] : ok := false ; elseif cmykcolorhash[c][m][y][k] = -1 : ok := false ; else : ok := true ; fi ; if not ok : save s ; string s ; s := dddecimal (c,m,y) & " " & decimal k ; _cmyk_counter_ := _cmyk_counter_ + 1 ; cmykcolorpattern[_cmyk_counter_/_special_div_] := s ; cmykcolorhash[c][m][y][k] := _cmyk_counter_ ; flush_special(1, 7, decimal _cmyk_counter_ & " " & s) ; _local_specials_ := _local_specials_ & " cmykcolorhash[" & decimal c & "][" & decimal m & "][" & decimal y & "][" & decimal k & "] := -1 ; " ; fi ; (_special_signal_/_special_div_,1/_special_div_,cmykcolorhash[c][m][y][k]/_special_div_) else : (1-c-k,1-m-k,1-y-k) fi enddef ; + +% vardef gray(expr s) = normalgray(s ) enddef ; +% vardef rgb (expr r,g,b) = normalrgb (r,g,b ) enddef ; +% vardef cmyk(expr c,m,y,k) = normalcmyk(c,m,y,k) enddef ; + +% numeric _scaled_color_t_ ; +% color _scaled_color_c_ ; + +% def withscaledcolor = +% hide ( +% _scaled_color_t_ := 0 ; % direct +% def gray(expr s) = +% hide ( +% _gray_s_ := s ; +% _scaled_color_t_ := 1; % gray +% ) +% 0 +% enddef ; +% def rgb (expr r,g,b) = +% hide ( +% _rgb_r_ := r ; _rgb_g_ := g ; _rgb_b_ := b ; +% _scaled_color_t_ := 2 ; % rgb +% ) +% 0 +% enddef ; +% def cmyk (expr c,m,y,k) = +% hide ( +% _cmyk_c_ := c ; _cmyk_m_ := m ; _cmyk_y_ := y ; _cmyk_k_ := k ; +% _scaled_color_t_ := 3 ; % cmyk +% ) +% 0 +% enddef ; ) +% dowithscaledcolor +% enddef ; + +% def dowithscaledcolor expr t = +% hide ( +% if color t : _scaled_color_c_ := t fi ; +% vardef gray(expr s) = normalgray(s) enddef ; +% vardef rgb (expr r,g,b) = normalrgb (r,g,b) enddef ; +% vardef cmyk(expr c,m,y,k) = normalcmyk(c,m,y,k) enddef ; +% ) +% enddef ; + +% def by expr s = +% if _scaled_color_t_ = 0 : +% withcolor s*_scaled_color_c_ +% elseif _scaled_color_t_ = 1 : +% withcolor gray(s*_gray_s_) +% elseif _scaled_color_t_ = 2 : +% withcolor rgb (s*_rgb_r_, s*_rgb_g_, s*_rgb_b_) +% elseif _scaled_color_t_ = 3 : +% withcolor cmyk(s*_cmyk_c_, s*_cmyk_m_, s*_cmyk_y_, s*_cmyk_k_) +% fi +% enddef ; + +% fill fullcircle scaled 10cm withscaledcolor cmyk(0,0,1,0) by .5 ; +% fill fullcircle scaled 8cm withscaledcolor rgb (0,0,1) by .5 ; +% fill fullcircle scaled 6cm withscaledcolor gray(1) by .5 ; +% fill fullcircle scaled 4cm withscaledcolor (0,1,0) by .5 ; diff --git a/metapost/context/base/mp-step.mp b/metapost/context/base/mp-step.mp new file mode 100644 index 000000000..d602f7014 --- /dev/null +++ b/metapost/context/base/mp-step.mp @@ -0,0 +1,320 @@ +%D \module +%D [ file=mp-step.mp, +%D version=2001.05.22, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=steps, +%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 unknown context_tool : input mp-tool ; fi ; +if known context_step : endinput ; fi ; + +boolean context_step ; context_step := true ; + +%D In the associated \TEX\ module \type {m-steps}, we describe +%D three methods. The first method uses a different kind of +%D code than the other two. The method we decided to use, +%D is based on positional information (paths) provided by +%D \CONTEXT. + +def initialize_step_variables = + save line_method, line_h_offset, line_v_offset ; + numeric line_method ; line_method := 1 ; + numeric line_h_offset ; line_h_offset := 3pt ; + numeric line_v_offset ; line_v_offset := 3pt ; +enddef ; + +def begin_step_chart = + initialize_step_variables ; + save steps, texts, t, b, tb, nofcells ; + picture cells[][], texts[][][], lines[][][] ; + numeric t, b ; t := 1 ; b := 2 ; + numeric nofcells ; nofcells := 0 ; +enddef ; + +def analyze_step_chart = + numeric n[], l[][], r[][] ; pair p[] ; + n[t] := n[b] := 0 ; numeric tb ; + for i=1 upto nofcells : for nn = t, b : + if bbwidth(cells[nn][i])>0 : n[nn] := n[nn] + 1 ; fi ; + l[t][i] := r[t][i] := l[b][i] := r[b][i] := 0 ; + endfor ; endfor ; + % count left and right points + for i=1 upto nofcells-1 : for j=i upto nofcells-1 : for nn = t, b : + if bbwidth(texts[nn][i][j])>0 : + l[nn][i] := l[nn][i] + 1 ; + r[nn][j+1] := r[nn][j+1] + 1 ; + fi ; + endfor ; endfor ; endfor ; + % calculate left and right points + vardef do (expr nn, mm, ii, ss) = + if (l[nn][ii] + r[nn][ii]) > 1 : ss else : .5 fi + [ ulcorner cells[mm][ii], urcorner cells[mm][ii] ] + enddef ; + % combined rows + tb := if n[t]>0 : t else : b fi ; +enddef ; + +vardef get_step_chart_top_line (expr i, j) = + if bbwidth(cells[tb][i])>0 : + if bbwidth(texts[t][i][j])>0 : + if bbwidth(cells[tb][j+1])>0 : + p[1] := top do(t, tb, i, .6) ; + p[3] := top do(t, tb, j+1, .4) ; + p[2] := .5[p[1],p[3]] ; + if line_method = 1 : + p[2] := p[2] shifted (0, ypart + (llcorner texts[t][i][j] - ulcorner cells[tb][j+1])) ; + elseif line_method = 2 : + p[2] := center texts[t][i][j] ; + else : + % nothing + fi ; + p[1] := p[1] shifted (0,+line_v_offset) ; + p[2] := p[2] shifted (0,-line_v_offset) ; + p[3] := p[3] shifted (0,+line_v_offset) ; + (p[1] {up} ... p[2] ... {down} p[3]) + else : + origin + fi + else : + origin + fi + else : + origin + fi +enddef ; + +vardef get_step_chart_bot_line (expr i, j) = + if bbwidth(cells[b][i])>0 : + if bbwidth(texts[b][i][j])>0 : + if bbwidth(cells[b][j+1])>0 : + p[1] := (bot do(b, b, i, .6)) shifted (0,-bbheight(cells[b][i])) ; + p[3] := (bot do(b, b, j+1, .4)) shifted (0,-bbheight(cells[b][j+1])) ; + p[2] := .5[p[1],p[3]] ; + if line_method = 1 : + p[2] := p[2] shifted (0, -ypart + (llcorner cells[b][j+1] - ulcorner texts[b][i][j])) ; + elseif line_method = 2 : + p[2] := center texts[b][i][j] ; + fi ; + p[1] := p[1] shifted (0,-line_v_offset) ; + p[2] := p[2] shifted (0,+line_v_offset) ; + p[3] := p[3] shifted (0,-line_v_offset) ; + (p[1] {down} ... p[2] ... {up} p[3]) + else : + origin + fi + else : + origin + fi + else : + origin + fi +enddef ; + +def end_step_chart = + for i=1 upto nofcells : for nn = t, b : + if bbwidth(cells[nn][i]) >0 : draw cells[nn][i] ; fi ; + endfor ; endfor ; + for i=1 upto nofcells : for j=i upto nofcells : for nn = t, b : + if known lines[nn][i][j] : + if bbwidth(lines[nn][i][j])>0 : draw lines[nn][i][j] ; fi ; + fi ; + endfor ; endfor ; endfor ; + for i=1 upto nofcells : for j=i upto nofcells : for nn = t, b : + if bbwidth(texts[nn][i][j])>0 : draw texts[nn][i][j] ; fi ; + endfor ; endfor ; endfor ; +enddef ; + +%D Step tables. + +def begin_step_table = + initialize_step_variables ; + picture cells[], texts[], lines[] ; + numeric nofcells ; nofcells := 0 ; +enddef ; + +def end_step_table = + for i=1 upto nofcells : if known cells[i] : if bbwidth(cells[i])>0 : + draw cells[i] ; + fi ; fi ; endfor ; + for i=1 upto nofcells : if known lines[i] : if bbwidth(lines[i])>0 : + draw lines[i] ; + fi ; fi ; endfor ; + for i=1 upto nofcells : if known texts[i] : if bbwidth(texts[i])>0 : + draw texts[i] ; + fi ; fi ; endfor ; +enddef ; + +vardef get_step_table_line (expr i) = + pair prev, self, next ; + if known texts[i] : + self := lft .5[llcorner texts[i], ulcorner texts[i] ] ; + prev := rt if known texts[i-1] : .3 else : .5 fi [lrcorner cells[i] , urcorner cells[i] ] ; + next := rt if known texts[i+1] : .7 else : .5 fi [lrcorner cells[i+1], urcorner cells[i+1]] ; + self := self shifted (-line_h_offset,0) ; + prev := prev shifted (+line_h_offset,0) ; + next := next shifted (+line_h_offset,0) ; + prev {right} ... self ... {left} next + else : + origin + fi +enddef ; + +endinput + +%D The older method let \METAPOST\ do the typesetting. The +%D macros needed for that are included here for educational +%D purposes. +%D +%D \starttypen +%D def initialize_step_variables = +%D save line_color, line_width, arrow_alternative, +%D text_fill_color, text_line_color, text_line_width, text_offset, +%D cell_fill_color, cell_line_color, cell_line_width, cell_offset, +%D line_h_offset, line_v_offset ; +%D color line_color ; line_color := .4white ; +%D numeric line_width ; line_width := 1.5pt ; +%D color text_fill_color ; text_fill_color := white ; +%D color text_line_color ; text_line_color := red ; +%D numeric text_line_width ; text_line_width := 1pt ; +%D numeric text_offset ; text_offset := 2pt ; +%D color cell_fill_color ; cell_fill_color := white ; +%D color cell_line_color ; cell_line_color := blue ; +%D numeric cell_line_width ; cell_line_width := 1pt ; +%D numeric cell_offset ; cell_offset := 2pt ; +%D numeric line_alternative ; line_alternative := 1 ; +%D numeric line_h_offset ; line_h_offset := 3pt ; +%D numeric line_v_offset ; line_v_offset := 3pt ; +%D enddef ; +%D +%D def begin_step_chart = +%D begingroup ; +%D initialize_step_variables ; +%D save steps, texts, t, b ; +%D picture cells[][] ; numeric nofcells ; nofcells := 0 ; +%D picture texts[][][] ; numeric noftexts ; noftexts := 0 ; +%D numeric t, b ; t := 1 ; b := 2 ; +%D enddef ; +%D \stoptypen +%D +%D We use a couple of macros to store the content. In the +%D second (third) alternative we will directly fill the +%D cells. +%D +%D \starttypen +%D def set_step_chart_cells (expr one, two) = +%D nofcells := nofcells + 1 ; noftexts := 0 ; +%D cells[t][nofcells] := textext.rt(one) ; +%D cells[b][nofcells] := textext.rt(two) ; +%D enddef ; +%D +%D def set_step_chart_texts (expr one, two) = +%D noftexts := noftexts + 1 ; +%D texts[t][nofcells][noftexts] := textext.rt(one) ; +%D texts[b][nofcells][noftexts] := textext.rt(two) ; +%D enddef ; +%D \stoptypen +%D +%D If you compare the building macro with the later +%D alternative, you will notice that here we explicitly +%D have to calculate the distances and positions. +%D +%D \starttypen +%D def end_step_chart = +%D numeric dx ; dx := 0 ; path p ; +%D numeric n[] ; n[t] := n[b] := 0 ; +%D numeric stepsvdistance[] ; +%D vardef bbwidth (expr p) = (xpart (lrcorner p - llcorner p)) enddef ; +%D vardef bbheight (expr p) = (ypart (urcorner p - lrcorner p)) enddef ; +%D stepsvdistance[t] := stepsvdistance[b] := 0 ; +%D for i=1 upto nofcells : +%D % find largest bbox +%D p := boundingbox steps +%D [if bbwidth(cells[t][i])>bbwidth(cells[b][i]): t else: b fi][i] ; +%D % assign largest bbox +%D for nn = t, b : +%D if bbwidth(cells[nn][i])>0 : +%D setbounds cells[nn][i] to p enlarged cell_offset ; +%D n[nn] := n[nn] + 1 ; +%D fi ; +%D endfor ; +%D % determine height +%D if n[t]>0 : +%D stepsvdistance[t] := bbheight(cells[t][1]) + intertextdistance ; +%D fi ; +%D % add to row +%D for nn = t, b : +%D cells[nn][i] := cells[nn][i] shifted (dx,stepsvdistance[nn]) ; +%D if bbwidth(cells[nn][i])>0 : +%D dowithpath (boundingbox cells[nn][i], +%D cell_line_width, cell_line_color, cell_background_color) ; +%D fi ; +%D endfor ; +%D % calculate position +%D dx := dx + interstepdistance + bbwidth(cells[b][i]) ; +%D endfor ; +%D boolean stacked ; stacked := false ; +%D numeric l[][], r[][], l[][], r[][] ; +%D pair pa, pb, pc ; path p[] ; +%D for i=1 upto nofcells : +%D l[t][i] := r[t][i] := l[b][i] := r[b][i] := 0 ; +%D endfor ; +%D % count left and right points +%D for i=1 upto nofcells : for j=1 upto nofcells : for nn = t, b : +%D if known texts[nn][i][j] : if bbwidth(texts[nn][i][j])>0 : +%D l[nn][i] := l[nn][i] + 1 ; +%D r[nn][j+i] := r[nn][j+i] + 1 ; +%D stacked := (stacked or (j>1)) ; +%D setbounds texts[nn][i][j] to boundingbox texts[nn][i][j] enlarged cell_offset ; +%D fi fi ; +%D endfor ; endfor ; endfor ; +%D % calculate left and right points +%D vardef do (expr nn, mm, ii, ss) = +%D if (l[nn][ii] > 0) and (r[nn][ii] > 0) : ss else : .5 fi +%D [ ulcorner cells[mm][ii],urcorner cells[mm][ii] ] +%D enddef ; +%D % draw arrow from left to right point +%D def dodo (expr nn, ii, jj, dd) = +%D drawarrow p[nn] +%D withpen pencircle scaled arrow_line_width +%D withcolor arrow_line_color ; +%D transform tr ; tr := identity +%D shifted point .5 along p[nn] +%D shifted -center texts[nn][ii][jj] +%D if not stacked : shifted (0,dd) fi ; +%D dowithpath ((boundingbox texts[nn][ii][jj]) transformed tr, +%D text_line_width, text_line_color, text_fill_color) ; +%D enddef ; +%D % draw top and bottom text boxes +%D for i=1 upto nofcells : for j=1 upto nofcells : +%D pickup pencircle scaled arrow_line_width ; +%D if known texts[t][i][j] : if bbwidth(texts[t][i][j]) > 0 : +%D pa := top do(t, if n[t]>0 : t else : b fi, i, .6) ; +%D pb := top do(t, if n[t]>0 : t else : b fi, j+i, .4) ; +%D pc := .5[pa,pb] shifted (0,+step_arrow_depth) ; +%D p[t] := pa {up} .. if not stacked : pc .. fi {down} pb ; +%D dodo(t, i, j, +intertextdistance) ; +%D fi fi ; +%D if known texts[b][i][j] : if bbwidth(texts[b][i][j]) > 0 : +%D pa := (bot do(b, b, i, .6)) shifted (0,-bbheight(cells[b][i])) ; +%D pb := (bot do(b, b, j+i, .4)) shifted (0,-bbheight(cells[b][j+i])) ; +%D pc := .5[pa,pb] shifted (0,-step_arrow_depth) ; +%D p[b] := pa {down} .. if not stacked : pc .. fi {up} pb ; +%D dodo(b, i, j, -intertextdistance) ; +%D fi fi ; +%D endfor ; endfor ; +%D endgroup ; +%D enddef ; +%D \stoptypen +%D +%D If you compare both methods, you will notice that the +%D first method is the cleanest, but not the most efficient +%D (since it needs \TEX\ runs within \METAPOST\ runs within +%D \TEX\ runs). diff --git a/metapost/context/base/mp-symb.mp b/metapost/context/base/mp-symb.mp new file mode 100644 index 000000000..a84c84e82 --- /dev/null +++ b/metapost/context/base/mp-symb.mp @@ -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/mp-text.mp b/metapost/context/base/mp-text.mp new file mode 100644 index 000000000..60e16c09b --- /dev/null +++ b/metapost/context/base/mp-text.mp @@ -0,0 +1,269 @@ +%D \module +%D [ file=mp-text.mp, +%D version=2000.07.10, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=text support, +%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. + +%D Under construction. + +if unknown context_tool : input mp-tool ; fi ; +if known context_text : endinput ; fi ; + +boolean context_text ; context_text := true ; + +if unknown noftexpictures : + numeric noftexpictures ; noftexpictures := 0 ; +fi ; + +if unknown texpictures[1] : + picture texpictures[] ; +fi ; + +numeric textextoffset ; textextoffset := 0 ; + +% vardef textext@#(expr txt) = +% interim labeloffset := textextoffset ; +% noftexpictures := noftexpictures + 1 ; +% if string txt : +% write "% figure " & decimal charcode & " : " & +% "texpictures[" & decimal noftexpictures & "] := btex " & +% txt & " etex ;" to jobname & ".mpt" ; +% if unknown texpictures[noftexpictures] : +% thelabel@#("unknown",origin) +% else : +% thelabel@#(texpictures[noftexpictures],origin) +% fi +% else : +% thelabel@#(txt,origin) +% fi +% enddef ; + +boolean hobbiestextext ; hobbiestextext := false ; +% string textextstring ; textextstring := "" ; + +% def resettextextdirective = +% textextstring := "" ; +% enddef ; + +% def textextdirective text t = +% textextstring := textextstring & t ; +% enddef ; + +vardef textext@#(expr txt) = + save _s_ ; string _s_ ; + interim labeloffset := textextoffset ; + noftexpictures := noftexpictures + 1 ; + if string txt : + if hobbiestextext : % the tex.mp method as fallback (see tex.mp) + write _s_ & "btex " & txt & " etex" to "mptextmp.mp" ; + write EOF to "mptextmp.mp" ; + scantokens "input mptextmp" + else : + write "% figure " & decimal charcode & " : " & + "texpictures[" & decimal noftexpictures & "] := btex " & + txt & " etex ;" to jobname & ".mpt" ; + if unknown texpictures[noftexpictures] : + thelabel@#("unknown",origin) + else : + thelabel@#(texpictures[noftexpictures],origin) + fi + fi + else : + thelabel@#(txt,origin) + fi +enddef ; + +string laboff_ ; laboff_ := "" ; +string laboff_c ; laboff_c := "" ; +string laboff_l ; laboff_l := ".lft" ; +string laboff_r ; laboff_r := ".rt" ; +string laboff_b ; laboff_b := ".bot" ; +string laboff_t ; laboff_t := ".top" ; + +string laboff_lt ; laboff_lt := ".ulft" ; +string laboff_rt ; laboff_rt := ".urt" ; % bugged, conflict with r +string laboff_lb ; laboff_lb := ".llft" ; +string laboff_rb ; laboff_rb := ".lrt" ; +string laboff_tl ; laboff_tl := ".ulft" ; +string laboff_tr ; laboff_tr := ".urt" ; +string laboff_bl ; laboff_bl := ".llft" ; +string laboff_br ; laboff_br := ".lrt" ; + +vardef textextstr(expr s, a) = + save ss ; string ss ; + ss := "laboff_" & a ; + ss := scantokens ss ; + ss := "textext" & ss & "(" & ditto & s & ditto & ")" ; + scantokens ss +enddef ; + +pair laboff.origin ; laboff.origin = (0,0) ; % (infinity,infinity) ; +pair laboff.raw ; laboff.raw = (0,0) ; % (infinity,infinity) ; + +laboff.origin = (0,0) ; labxf.origin := 0 ; labyf.origin := 0 ; +laboff.raw = (0,0) ; labxf.raw := 0 ; labyf.raw := 0 ; + +vardef thelabel@#(expr s, z) = + save p ; picture p ; + p = s if not picture s : infont defaultfont scaled defaultscale fi ; +% wrong, see myway textext +% if laboff@#<>laboff.origin : + (p shifted (z + labeloffset*laboff@# - (labxf@#*lrcorner p + + labyf@#*ulcorner p + (1-labxf@#-labyf@#)*llcorner p))) +% else : +% (p shifted z) +% fi +enddef; + +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 ; + +vardef verbatim(expr str) = + ditto & "\detokenize{" & str & "}" & ditto +enddef ; diff --git a/metapost/context/base/mp-tool.mp b/metapost/context/base/mp-tool.mp new file mode 100644 index 000000000..1a748baf9 --- /dev/null +++ b/metapost/context/base/mp-tool.mp @@ -0,0 +1,2566 @@ +%D \module +%D [ file=mp-tool.mp, +%D version=1998.02.15, +%D title=\CONTEXT\ \METAPOST\ 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. + +% a cleanup is needed, like using image and alike +% use a few more "newinternal"'s + +%D This module is rather preliminary and subjected to +%D changes. + +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 ; + +% vardef mpversiongt(expr s) = +% scantokens (mpversion & " > " & if numeric s : decimal s else : s fi) +% enddef ; +% vardef mpversionlt(expr s) = +% scantokens (mpversion & " < " & if numeric s : decimal s else : s fi) +% enddef ; +% vardef mpversioneq(expr s) = +% scantokens (mpversion & " = " & if numeric s : decimal s else : s fi) +% enddef ; + +%D More interesting: +%D +%D \starttyping +%D fill fullcircle scaled 4cm withcolor if mpversiongt("0.6") : red else : green fi ; +%D fill fullcircle scaled 2cm withcolor if mpversionlt(0.6) : blue else : white fi ; +%D fill fullcircle scaled 1cm withcolor if mpversioncmp(0.6,">=") : yellow else : black fi ; +%D \stoptyping + +vardef mpversioncmp(expr s, c) = + scantokens (mpversion & c & if numeric s : decimal s else : s fi) +enddef ; + +vardef mpversionlt (expr s) = mpversioncmp(s, "<") enddef ; +vardef mpversioneq (expr s) = mpversioncmp(s, "=") enddef ; +vardef mpversiongt (expr s) = mpversioncmp(s, ">") enddef ; + +%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 ; + +%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. + +% When somehow the first one gets no HiRes, then make sure +% that the format matches the mem sizes in the config file. + +% eerste " " er uit + +string space ; space = char 32 ; + +vardef ddecimal primary p = + decimal xpart p & " " & decimal ypart p +enddef ; + +% is now built in + +% extra_endfig := extra_endfig +% & "special " +% & "(" +% & ditto +% & "%%HiResBoundingBox: " +% & ditto +% & "&ddecimal llcorner currentpicture" +% & "&space" +% & "&ddecimal urcorner currentpicture" +% & ");"; + +%D Crap (experimental, not used): + +def forcemultipass = + % extra_endfig := extra_endfig & "special(" & ditto & "%%MetaPostOption: multipass" & ditto & ");" ; +enddef ; + +%D Colors: + +nocolormodel := 1 ; +greycolormodel := 3 ; +rgbcolormodel := 5 ; +cmykcolormodel := 7 ; + +let grayscale = numeric ; + +% def colorlike(expr c) text v = % colorlike(a) b, c, d ; +% forsuffixes i=v : % save i ; +% if cmykcolor c : +% cmykcolor i ; +% elseif rgbcolor c : +% rgbcolor i ; +% else : +% grayscale i ; +% fi ; +% endfor ; +% 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 : + grayscale i ; + fi ; + endfor ; +enddef ; + +% if (unknown colormodel) : +% def colormodel = +% rgbcolormodel +% enddef ; +% fi ; + +%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 ; + +%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. + +if unknown collapse_data : + boolean collapse_data ; collapse_data := false ; +fi ; + +boolean savingdata ; savingdata := false ; +boolean savingdatadone ; savingdatadone := false ; + +def savedata expr txt = + if collapse_data : + write txt to data_mpd_file ; + else : + write if savingdata : txt else : + "\MPdata{" & decimal charcode & "}{" & txt & "}" + fi + & "%" to data_mpd_file ; + fi ; +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 ; + +%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 = + if (path p) or (picture p) : + llcorner p -- lrcorner p -- urcorner p -- ulcorner p + else : + origin + fi -- 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; + +def innerboundingbox = inner_boundingbox enddef ; +def outerboundingbox = outer_boundingbox 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: + +numeric Pi ; Pi := 3.1415926 ; + +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 asin primary x = (x+(x**3)/6+3(x**5)/40) enddef ; +vardef acos primary x = (asin(-x)) enddef ; +vardef atan primary x = (x-(x**3)/3+(x**5)/5-(x**7)/7) enddef ; +vardef tand primary x = (sind(x)/cosd(x)) enddef ; + +%D Here are Taco Hoekwater's alternatives (but +%D vardef'd and primaried). + +pi := 3.1415926 ; radian := 180/pi ; % 2pi*radian = 360 ; + +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 invsin primary x = ((asin(x))/radian) enddef ; +vardef invcos primary x = ((acos(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 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 \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; + s_draw pp s_text ; + def do_stripe_rotation (expr p) = + (currentpicture rotatedaround(center p,stripe_angle)) + enddef ; + s_max := max + (xpart llcorner do_stripe_rotation(currentpicture), + xpart urcorner do_stripe_rotation(currentpicture), + ypart llcorner do_stripe_rotation(currentpicture), + ypart urcorner do_stripe_rotation(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 := do_stripe_rotation(newpic); + 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 xyscale_currentpicture ( width, 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 xyscale_currentpicture(expr the_width, the_height) = +% natural_width := xpart urcorner currentpicture - xpart llcorner currentpicture; +% natural_height := ypart urcorner currentpicture - ypart llcorner currentpicture; +% currentpicture := currentpicture +% xscaled (the_width/natural_width) +% yscaled (the_height/natural_height) ; +% enddef; +% +% def scale_currentpicture(expr the_width, the_height) = +% xscale_currentpicture(the_width) ; +% yscale_currentpicture(the_height) ; +% enddef; + +% nog eens uitbreiden zodat path en pic worden afgehandeld. + +% natural_width := xpart urcorner currentpicture - xpart llcorner currentpicture; +% currentpicture := currentpicture scaled (the_width/natural_width) ; + +% TODO TODO TODO TODO, not yet ok + +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 ; + +primarydef p sized wh = + (p xysized wh) +enddef ; + +def xscale_currentpicture(expr w) = + currentpicture := currentpicture xsized w ; +enddef; + +def yscale_currentpicture(expr h) = + currentpicture := currentpicture ysized h ; +enddef; + +def xyscale_currentpicture(expr w, h) = + currentpicture := currentpicture xysized (w,h) ; +enddef; + +def scale_currentpicture(expr w, h) = + 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 ; + +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 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 = + 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 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 ; + +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. + +color cyan ; cyan = (0,1,1) ; +color magenta ; magenta = (1,0,1) ; +color yellow ; yellow = (1,1,0) ; + +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 ; + do_drawfill +enddef ; + +def do_drawfill text t = + draw _c_ t ; + fill _c_ t ; +enddef; + +def undrawfill expr c = + drawfill c withcolor background +enddef ; + +%D Moved from mp-char.mp + +vardef paired (expr d) = + if pair d : d else : (d,d) fi +enddef ; + +vardef tripled (expr d) = + if color d : d else : (d,d,d) fi +enddef ; + +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 expr p = + 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 = +% 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 cycle +%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 graypart s * graypart 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 ; 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 parallel s = +% begingroup ; save q, b ; path q ; numeric b ; +% b := xpart (lrcorner p - llcorner p) ; +% q := p if b>0 : scaled ((b+2s)/b) fi ; +% (q shifted (center p-center q)) +% endgroup +% enddef ; + +%primarydef p parallel s = +% begingroup ; save q, w,h ; path q ; numeric w, h ; +% w := bbwidth(p) ; h := bbheight(p) ; +% q := p if (w>0) and (h>0) : +% xyscaled ((w+2*xpart paired(s))/w,(h+2*ypart paired(s))/h) fi ; +% (q shifted (center p-center q)) +% endgroup +%enddef ; + +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 + +def 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. + +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 ; + +def resetdrawoptions = + drawlineoptions (withpen pencircle scaled 1pt withcolor .5white) ; + drawpointoptions (withpen pencircle scaled 4pt withcolor black) ; + drawcontroloptions(withpen pencircle scaled 2.5pt withcolor black) ; + drawlabeloptions () ; + draworiginoptions (withpen pencircle scaled 1pt withcolor .5white) ; + drawboundoptions (dashed evenly _ori_opt_) ; + drawpathoptions (withpen pencircle scaled 5pt 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 drawarrowpath expr p = +% begingroup ; +% save autoarrows ; boolean autoarrows ; autoarrows := true ; +% save arrowpath ; path arrowpath ; arrowpath := p ; +% _drawarrowpath_ +%enddef ; +% +%def _drawarrowpath_ text t = +% drawarrow arrowpath _pth_opt_ t ; +% endgroup ; +%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 ; do_drawpoints enddef ; +def drawcontrolpoints expr c = path _c_ ; _c_ := c ; do_drawcontrolpoints enddef ; +def drawcontrollines expr c = path _c_ ; _c_ := c ; do_drawcontrollines enddef ; +def drawpointlabels expr c = path _c_ ; _c_ := c ; do_drawpointlabels enddef ; + +def do_drawpoints text t = + for _i_=0 upto length(_c_) : + normaldraw point _i_ of _c_ _pnt_opt_ t ; + endfor ; +enddef; + +def do_drawcontrolpoints 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 do_drawcontrollines 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 ; + +def do_drawpointlabels 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_) ; + _u_ := 12 * defaultscale * _u_ ; + normaldraw thelabel ( decimal _i_, + _p_ shifted if cycle _c_ and (_i_=0) : - fi _u_ ) _lab_opt_ t ; + 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 ; do_drawxticks enddef ; +def drawyticks expr c = path _c_ ; _c_ := c ; do_drawyticks enddef ; +def drawticks expr c = path _c_ ; _c_ := c ; do_drawticks enddef ; + +% Adding eps prevents disappearance due to rounding errors. + +def do_drawxticks 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 do_drawyticks 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 do_drawticks 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 ; + +%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 visualizepaths = + let fill = visualizedfill ; + let draw = visualizeddraw ; +enddef ; + +def naturalizepaths = + let fill = normalfill ; + let draw = normaldraw ; +enddef ; + +extra_endfig := extra_endfig & " naturalizepaths ; " ; + +%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. + +def _finarr text t = + if autoarrows : set_ahlength (t) fi ; + draw _apth t ; + filldraw arrowhead _apth t ; +enddef; + +def _findarr text t = + if autoarrows : set_ahlength (t) fi ; + draw _apth t ; + fill arrowhead _apth withpen currentpen t ; + fill arrowhead reverse _apth withpen currentpen t ; +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 \starttypen +%D drawdot point .5 along somepath ; +%D drawdot point 3cm on somepath ; +%D \stoptypen +%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 = +% (arctime len of pat) of pat +% enddef ; + +primarydef len on pat = + (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 len on pat) ; +% (tap cutafter (point -len on tap)) +% endgroup +% enddef ; + +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))) of q ; + l := point xpart (p intersectiontimes + (ori--((1+eps)*arclength(ori--loc)*unitvector(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 ; + +% better? + +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 \starttypen +%D drawarrow anglebetween(line_a,line_b,somelabel) ; +%D \stoptypen + +% angleoffset ; angleoffset := 0pt ; +numeric anglelength ; anglelength := 20pt ; +numeric 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 := ((common--pointa) rotatedaround (pointa,-where*90)) +% intersectionpoint +% ((common--pointb) rotatedaround (pointb, where*90)) ; +% 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 ; + +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 currentpicturestack[] ; +numeric currentpicturedepth ; currentpicturedepth := 0 ; + +def pushcurrentpicture = + currentpicturedepth := currentpicturedepth + 1 ; + currentpicturestack[currentpicturedepth] := currentpicture ; + currentpicture := nullpicture ; +enddef ; + +def popcurrentpicture text t = % optional text + if currentpicturedepth > 0 : + addto currentpicturestack[currentpicturedepth] also currentpicture t ; + currentpicture := currentpicturestack[currentpicturedepth] ; + currentpicturedepth := currentpicturedepth - 1 ; + fi ; +enddef ; + +%D colorcircle(size, red, green, blue) ; + +% vardef colorcircle (expr size, red, green, blue) = +% save r, g, b, rr, gg, bb, cc, mm, yy ; save radius ; +% path r, g, b, rr, bb, gg, cc, mm, yy ; numeric radius ; +% +% radius := 5cm ; pickup pencircle scaled (radius/25) ; +% +% r := g := b := fullcircle scaled radius shifted (0,radius/4) ; +% +% r := r rotatedaround (origin, 15) ; +% g := g rotatedaround (origin,135) ; +% b := b rotatedaround (origin,255) ; +% +% r := r rotatedaround(center r,-90) ; +% g := g rotatedaround(center g, 90) ; +% +% gg := buildcycle(buildcycle(reverse r,b),g) ; +% cc := buildcycle(buildcycle(b,reverse g),r) ; +% +% rr := gg rotatedaround(origin,120) ; +% bb := gg rotatedaround(origin,240) ; +% +% yy := cc rotatedaround(origin,120) ; +% mm := cc rotatedaround(origin,240) ; +% +% pushcurrentpicture ; +% +% fill fullcircle scaled radius withcolor white ; +% +% fill rr withcolor red ; fill cc withcolor white-red ; +% fill gg withcolor green ; fill mm withcolor white-green ; +% fill bb withcolor blue ; fill yy withcolor white-blue ; +% +% for i = rr,gg,bb,cc,mm,yy : draw i withcolor .5white ; endfor ; +% +% currentpicture := currentpicture xsized size ; +% +% popcurrentpicture ; +% enddef ; + +% vardef colorcircle (expr size, red, green, blue) = +% save r, g, b, rr, gg, bb, cc, mm, yy ; save radius ; +% path r, g, b, rr, bb, gg, cc, mm, yy ; numeric radius ; +% +% radius := 5cm ; pickup pencircle scaled (radius/25) ; +% +% transform t ; t := identity rotatedaround(origin,120) ; +% +% r := fullcircle scaled radius +% shifted (0,radius/4) rotatedaround(origin,15) ; +% +% g := r transformed t ; b := g transformed t ; +% +% r := r rotatedaround(center r,-90) ; +% g := g rotatedaround(center g, 90) ; +% +% gg := buildcycle(buildcycle(reverse r,b),g) ; +% cc := buildcycle(buildcycle(b,reverse g),r) ; +% +% rr := gg transformed t ; bb := rr transformed t ; +% yy := cc transformed t ; mm := yy transformed t ; +% +% pushcurrentpicture ; +% +% fill fullcircle scaled radius withcolor white ; +% +% fill rr withcolor red ; fill cc withcolor white-red ; +% fill gg withcolor green ; fill mm withcolor white-green ; +% fill bb withcolor blue ; fill yy withcolor white-blue ; +% +% for i = rr,gg,bb,cc,mm,yy : draw i withcolor .5white ; endfor ; +% +% currentpicture := currentpicture xsized size ; +% +% popcurrentpicture ; +% enddef ; + +vardef colorcircle (expr size, red, green, blue) = + 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 = +% if color p : +% tripled(c) * p +% else : +% image +% (save cc ; color cc ; cc := tripled(c) ; +% 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 +% 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 color p : + tripled(.30redpart p+.59greenpart p+.11bluepart 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 tripled(.30redpart i+.59greenpart i+.11bluepart i) ; + endfor ; ) + fi +enddef ; + +% 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 +% save al ; al := arclength(p) ; +% if al > 0 : +% if pair p : +% point 1 of ((origin -- p) stretched ((al+len)/al)) +% else : +% p stretched ((al+len)/al) +% fi +% else : +% p +% fi +% 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 ; + +% real fun + +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 ; + +% color_map_resolution := 1000 ; +% +% def r_color primary c = round(color_map_resolution*redpart c) enddef ; +% def g_color primary c = round(color_map_resolution*greenpart c) enddef ; +% def b_color primary c = round(color_map_resolution*bluepart c) enddef ; + +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[r_color old][g_color old][b_color old] := new ; +enddef ; + +def remappedcolor(expr c) = + if known color_map[r_color c][g_color c][b_color c] : + color_map[r_color c][g_color c][b_color c] + else : + c + fi +enddef ; + +% def refill suffix c = do_repath (1) (c) enddef ; +% def redraw suffix c = do_repath (2) (c) enddef ; +% def recolor suffix c = do_repath (0) (c) enddef ; +% +% color refillbackground ; refillbackground := (1,1,1) ; +% +% def do_repath (expr mode) (suffix c) text t = % can it be stroked and filled at the same time ? +% begingroup ; +% if mode=0 : save withcolor ; remapcolors ; fi ; +% save _c_, _cc_, _f_, _b_ ; picture _c_, _cc_ ; color _f_ ; path _b_ ; +% _c_ := c ; _b_ := boundingbox c ; c := nullpicture ; +% for i within _c_ : +% _f_ := (redpart i, greenpart i, bluepart i) ; +% if bounded i : +% setbounds c to pathpart i ; +% elseif clipped i : +% clip c to pathpart i ; +% elseif stroked i : +% addto c doublepath pathpart i +% dashed dashpart i withpen penpart i +% withcolor _f_ % (redpart i, greenpart i, bluepart i) +% if mode=2 : t fi ; +% elseif filled i : +% addto c contour pathpart i +% withcolor _f_ +% if (mode=1) and (_f_<>refillbackground) : t fi ; +% else : +% addto c also i ; +% fi ; +% endfor ; +% setbounds c to _b_ ; +% endgroup ; +% 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) ; + +% vardef repathed (expr mode, p) text t = +% begingroup ; +% if mode=0 : save withcolor ; remapcolors ; fi ; +% save _p_, _pp_, _f_, _b_, _t_ ; +% picture _p_, _pp_ ; 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 : +% addto _p_ doublepath pathpart i +% dashed dashpart i withpen penpart i +% withcolor _f_ % (redpart i, greenpart i, bluepart i) +% if mode=2 : t fi ; +% elseif filled i : +% addto _p_ contour pathpart i +% withcolor _f_ +% if (mode=1) and (_f_<>refillbackground) : t 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 ; + +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) = + (1-c-k,1-m-k,1-y-k) +enddef ; + +% handy + +vardef bbwidth (expr p) = + (if known p : + if path p or picture p : + xpart (lrcorner p - llcorner p) + else : 0 fi else : 0 + fi ) +enddef ; + +vardef bbheight (expr p) = + (if known p : if path p or picture p : + ypart (urcorner p - lrcorner p) + else : 0 fi 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 ; + +% not perfect, but useful since it removes redundant points. + +% vardef dostraightened(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 dostraightened(+1,dostraightened(+1,reverse p))) +% enddef ; + +% vardef unspiked expr p = +% (reverse dostraightened(-1,dostraightened(-1,reverse p))) +% enddef ; + +% simplified : remove same points as well as redundant points +% unspiked : remove same points as well as areas with zero distance + +vardef dostraightened(expr sign, p) = + save _p_, _q_ ; path _p_, _q_ ; + _p_ := p ; + forever : + _q_ := dodostraightened(sign, _p_) ; + exitif length(_p_) = length(_q_) ; + _p_ := _q_ ; + endfor ; + _q_ +enddef ; + +vardef dodostraightened(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 = +% dostraightened(+1,p) +% enddef ; + +% vardef unspiked expr p = +% dostraightened(-1,p) +% enddef ; + +vardef simplified expr p = + (reverse dostraightened(+1,dostraightened(+1,reverse p))) +enddef ; + +vardef unspiked expr p = + (reverse dostraightened(-1,dostraightened(-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) = + 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,g,g) +enddef ; + +% for metafun + +if unknown darkred : color darkred ; darkred := .625(1,0,0) 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) + +string _clean_ascii_[] ; + +def register_dirty_chars(expr str) = + for i = 0 upto length(str)-1 : + _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 _clean_ascii_[ASCII si] : _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 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 ; + +% new + +vardef colorpart(expr i) = + (redpart i, greenpart i,bluepart i) +enddef ; + +% for david arnold: + +% showgrid(-5,10,1cm,-10,10,1cm); + +def showgrid (expr MinX, MaxX, DeltaX, MinY, MaxY, DeltaY)= + begingroup + save defaultfont, defaultscale, size ; + string defaultfont ; defaultfont := "cmtt10"; % i.e. infofont + numeric defaultscale ; defaultscale := 8pt / fontsize defaultfont; + 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(decimal x, (x*DeltaX,-size)); + endfor ; + for y=MinY upto MaxY: + label.lft(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) = + 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 ; + +% mark paths (for external progs to split) + +% def somepath(expr p) +% p +% 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 ; + +primarydef p snapped s = + hide ( if path p : + forever : + exitif (bbheight(p) <= s) and (bbwidth(p) <= s) ; + p := p scaled (1/2) ; + endfor ; + elseif numeric p : + forever : + exitif p <= s ; + p := p scaled (1/2) ; + endfor ; + fi ; ) + p +enddef ; + +% done + +endinput ; diff --git a/metapost/context/base/mp-txts.mp b/metapost/context/base/mp-txts.mp new file mode 100644 index 000000000..f208c7149 --- /dev/null +++ b/metapost/context/base/mp-txts.mp @@ -0,0 +1,67 @@ +%D \module +%D [ file=mp-txts.mp, +%D version=2006.06.08, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=more text support, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright=PRAGMA] +%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 context_tool : input mp-tool ; fi ; +if known context_txts : endinput ; fi ; + +boolean context_txts ; context_txts := true ; + +%D The real code: + +string txtfile ; txtfile := "" ; +string txtfont ; txtfont := defaultfont ; +string txtpref ; txtpref := "00001::::" ; +numeric txtnext ; txtnext := 0 ; +numeric txtdepth ; txtdepth := 0 ; + +vardef nexttxt = + txtnext := txtnext + 1 ; + txtnext +enddef ; + +picture savedtxts[] ; +numeric depthtxts[] ; + +vardef zerofilled(expr fd) = + if fd<10: "0000" else : + if fd<100: "000" else : + if fd<1000: "00" else : + if fd<10000: "0" else : + fi fi fi fi & decimal fd +enddef; + +vardef savetxt(expr n,w,h,d) text t = + depthtxts[n] := d ; + savedtxts[n] := ((txtpref & zerofilled(n)) infont txtfont) xysized(w,h+d) t +enddef ; + +vardef sometxt(expr n) = + if known savedtxts[n] : + txtdepth := depthtxts[n] ; savedtxts[n] + else : + txtdepth := 0 ; nullpicture + fi +enddef ; + +def loadtxts = + if txtfile <> "" : + readfile(txtfile) ; + fi ; +enddef ; + +def StartTexts = + loadtxts ; +enddef ; + +def StopTexts = +enddef ; |