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-rw-r--r--metapost/context/base/metafun.mpii30
-rw-r--r--metapost/context/base/metafun.mpiv58
-rw-r--r--metapost/context/base/mp-back.mp3
-rw-r--r--metapost/context/base/mp-base.mpiv123
-rw-r--r--metapost/context/base/mp-butt.mpii (renamed from metapost/context/base/mp-butt.mp)18
-rw-r--r--metapost/context/base/mp-butt.mpiv79
-rw-r--r--metapost/context/base/mp-char.mpii1018
-rw-r--r--metapost/context/base/mp-char.mpiv1019
-rw-r--r--metapost/context/base/mp-chem.mpiv89
-rw-r--r--metapost/context/base/mp-core.mpii4
-rw-r--r--metapost/context/base/mp-core.mpiv1849
-rw-r--r--metapost/context/base/mp-figs.mpii (renamed from metapost/context/base/mp-figs.mp)29
-rw-r--r--metapost/context/base/mp-figs.mpiv49
-rw-r--r--metapost/context/base/mp-fobg.mp3
-rw-r--r--metapost/context/base/mp-func.mp59
-rw-r--r--metapost/context/base/mp-func.mpii58
-rw-r--r--metapost/context/base/mp-func.mpiv70
-rw-r--r--metapost/context/base/mp-grid.mpii (renamed from metapost/context/base/mp-grid.mp)3
-rw-r--r--metapost/context/base/mp-grid.mpiv170
-rw-r--r--metapost/context/base/mp-grph.mpii (renamed from metapost/context/base/mp-grph.mp)3
-rw-r--r--metapost/context/base/mp-grph.mpiv259
-rw-r--r--metapost/context/base/mp-mlib.mpiv381
-rw-r--r--metapost/context/base/mp-page.mpii (renamed from metapost/context/base/mp-page.mp)3
-rw-r--r--metapost/context/base/mp-page.mpiv666
-rw-r--r--metapost/context/base/mp-shap.mpii (renamed from metapost/context/base/mp-shap.mp)10
-rw-r--r--metapost/context/base/mp-shap.mpiv208
-rw-r--r--metapost/context/base/mp-spec.mpii5
-rw-r--r--metapost/context/base/mp-step.mpii51
-rw-r--r--metapost/context/base/mp-step.mpiv5
-rw-r--r--metapost/context/base/mp-text.mpii (renamed from metapost/context/base/mp-text.mp)3
-rw-r--r--metapost/context/base/mp-text.mpiv163
-rw-r--r--metapost/context/base/mp-tool.mpii (renamed from metapost/context/base/mp-tool.mp)6
-rw-r--r--metapost/context/base/mp-tool.mpiv2145
-rw-r--r--metapost/context/base/mp-txts.mpii (renamed from metapost/context/base/mp-txts.mp)3
34 files changed, 7260 insertions, 1382 deletions
diff --git a/metapost/context/base/metafun.mpii b/metapost/context/base/metafun.mpii
index 65d7b87f8..783b467dc 100644
--- a/metapost/context/base/metafun.mpii
+++ b/metapost/context/base/metafun.mpii
@@ -28,21 +28,21 @@
%D end even may use a patched version, we prefer to use a
%D copy.
-input mp-base.mpii ;
-input mp-tool.mp ;
-input mp-spec.mpii ;
-input mp-core.mpii ;
-input mp-page.mp ;
-input mp-text.mp ;
-input mp-txts.mp ;
-input mp-shap.mp ;
-input mp-butt.mp ;
-input mp-char.mpii ;
-input mp-step.mpii ;
-input mp-grph.mp ;
-input mp-figs.mp ;
-input mp-grid.mp ;
-input mp-func.mp ;
+input "mp-base.mpii" ;
+input "mp-tool.mpii" ;
+input "mp-spec.mpii" ;
+input "mp-core.mpii" ;
+input "mp-page.mpii" ;
+input "mp-text.mpii" ;
+input "mp-txts.mpii" ;
+input "mp-shap.mpii" ;
+input "mp-butt.mpii" ;
+input "mp-char.mpii" ;
+input "mp-step.mpii" ;
+input "mp-grph.mpii" ;
+input "mp-figs.mpii" ;
+input "mp-grid.mpii" ;
+input "mp-func.mpii" ;
string metafunversion ;
diff --git a/metapost/context/base/metafun.mpiv b/metapost/context/base/metafun.mpiv
index b32e301a7..4bc762cf7 100644
--- a/metapost/context/base/metafun.mpiv
+++ b/metapost/context/base/metafun.mpiv
@@ -16,33 +16,33 @@
%D end even may use a patched version, we prefer to use a
%D copy.
-input mp-base.mpiv ;
-input mp-tool.mp ;
-input mp-core.mpiv ;
-input mp-page.mp ;
-input mp-text.mp ;
-input mp-txts.mp ;
-input mp-butt.mp ;
-input mp-shap.mp ;
-% mp-char.mpiv ; % there no need to always load this
-% mp-step.mpiv ; % there no need to always load this
-input mp-grph.mp ;
-input mp-figs.mp ;
-input mp-mlib.mpiv ;
-input mp-chem.mpiv ; % there no need to always load this (todo)
-input mp-grid.mp ;
-input mp-func.mp ;
-
-string metafunversion ;
-
-metafunversion = "metafun iv" & " " &
- decimal year & "-" &
- decimal month & "-" &
- decimal day & " " &
- if ((time div 60) < 10) : "0" & fi
- decimal (time div 60) & ":" &
- if ((time-(time div 60)*60) < 10) : "0" & fi
- decimal (time-(time div 60)*60) ;
+input "mp-base.mpiv" ;
+input "mp-tool.mpiv" ;
+input "mp-mlib.mpiv" ;
+input "mp-core.mpiv" ; % todo: namespace and cleanup
+input "mp-page.mpiv" ; % todo: namespace and cleanup
+input "mp-butt.mpiv" ; % todo: namespace and cleanup
+input "mp-shap.mpiv" ; % will be improved
+input "mp-grph.mpiv" ; % todo: namespace and cleanup
+input "mp-grid.mpiv" ; % todo: namespace and cleanup
+
+input "mp-figs.mpiv" ; % obsolete, needs checking
+input "mp-text.mpiv" ; % will be redone into a module
+input "mp-func.mpiv" ; % under construction
+
+% "mp-char.mpiv" ; % loaded on demand
+% "mp-step.mpiv" ; % loaded on demand
+% "mp-chem.mpiv" ; % loaded on demand
+
+string metafunversion ; metafunversion =
+ "metafun iv" & " " &
+ decimal year & "-" &
+ decimal month & "-" &
+ decimal day & " " &
+ if ((time div 60) < 10) : "0" & fi
+ decimal (time div 60) & ":" &
+ if ((time-(time div 60)*60) < 10) : "0" & fi
+ decimal (time-(time div 60)*60) ;
let normalend = end ;
@@ -50,4 +50,6 @@ def end =
; message "" ; message metafunversion ; message "" ; normalend ;
enddef ;
-dump ; endinput .
+dump ; % obsolete in mplib
+
+endinput
diff --git a/metapost/context/base/mp-back.mp b/metapost/context/base/mp-back.mp
index f49474cf7..f588adea9 100644
--- a/metapost/context/base/mp-back.mp
+++ b/metapost/context/base/mp-back.mp
@@ -11,8 +11,7 @@
%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 ;
+if known context_back : endinput ; fi ;
boolean context_back ; context_back := true ;
diff --git a/metapost/context/base/mp-base.mpiv b/metapost/context/base/mp-base.mpiv
index cd0c79728..5ed6fd981 100644
--- a/metapost/context/base/mp-base.mpiv
+++ b/metapost/context/base/mp-base.mpiv
@@ -6,6 +6,10 @@
% features of plain METAFONT except those specific to font-making.
% There are also a number of macros for labeling figures, etc.
+% For practical reasons I have moved some new code here (and might
+% remove some code as well). After all, there is no development in
+% this format.
+
string base_name, base_version ;
base_name := "plain" ;
@@ -15,27 +19,21 @@ message "Preloading the plain mem file, version " & base_version ;
delimiters () ; % this makes parentheses behave like parentheses
-def upto =
- step 1 until
-enddef ;
-
-def downto =
- step -1 until
-enddef ;
+def upto = step 1 until enddef ;
+def downto = step -1 until enddef ;
def exitunless expr c =
exitif not c
enddef ;
-let relax = \ ; % ignore the word `relax', as in TeX
+let relax = \ ; % ignore the word relax, as in TeX
let \\ = \ ; % double relaxation is like single
-def ]] = % right brackets should be loners
- ] ]
-enddef ;
+def [[ = [ [ enddef ;
+def ]] = ] ] enddef ;
def -- =
- {curl 1}..{curl 1}
+ {curl 1} .. {curl 1}
enddef ;
def --- =
@@ -58,7 +56,7 @@ enddef ;
def ??? =
hide (
- interim showstopping : =1 ;
+ interim showstopping := 1 ;
showdependencies
)
enddef ;
@@ -95,7 +93,7 @@ enddef ;
def tracingall = % turns on every form of tracing
tracingonline := 1 ;
showstopping := 1 ;
- loggingall
+ loggingall ;
enddef ;
def tracingnone = % turns off every form of tracing
@@ -130,19 +128,19 @@ tertiarydef p _on_ d =
w := w + d ;
pic shifted (0,d)
endgroup
-enddef;
+enddef ;
tertiarydef p _off_ d =
- begingroup w:=w+d;
+ begingroup w := w + d ;
p shifted (0,d)
endgroup
-enddef;
+enddef ;
%% basic constants and mathematical macros
% numeric constants
-newinternal eps, epsilon,infinity, _ ;
+newinternal eps, epsilon, infinity, _ ;
eps := .00049 ; % this is a pretty small positive number
epsilon := 1/256/256 ; % but this is the smallest
@@ -181,16 +179,23 @@ for z=origin,right,up :
z transformed identity = z ;
endfor
-% color constants
+% color constants (all in rgb color space)
+
+color black, white, red, green, blue, cyan, magenta, yellow, background;
+
+black := (0,0,0) ;
+white := (1,1,1) ;
+red := (1,0,0) ;
+green := (0,1,0) ;
+blue := (0,0,1) ;
+cyan := (0,1,1) ;
+magenta := (1,0,1) ;
+yellow := (1,1,0) ;
-color black, white, red, green, blue, background;
+background := white ; % obsolete
-black = (0,0,0) ;
-white = (1,1,1) ;
-red = (1,0,0) ;
-green = (0,1,0) ;
-blue = (0,0,1) ;
-background = white ;
+let graypart = greypart ;
+let graycolor = greycolor ;
% picture constants
@@ -212,7 +217,7 @@ EOF = char 0 ; % end-of-file for readfrom and write..to
pen pensquare, penrazor, penspeck ;
pensquare = makepen(unitsquare shifted -(.5,.5)) ;
-penrazor = makepen((-.5,0)--(.5,0)--cycle) ;
+penrazor = makepen((-.5,0) -- (.5,0) -- cycle) ;
penspeck = pensquare scaled eps ;
% nullary operators
@@ -332,7 +337,7 @@ enddef ;
vardef directionpoint expr z of p =
a_ := directiontime z of p ;
- if a_<0 :
+ if a_ < 0 :
errmessage("The direction doesn't occur") ;
fi
point a_ of p
@@ -342,27 +347,27 @@ secondarydef p intersectionpoint q =
begingroup
save x_, y_ ;
(x_,y_) = p intersectiontimes q ;
- if x_<0 :
+ if x_ < 0 :
errmessage("The paths don't intersect") ;
origin
else :
.5[point x_ of p, point y_ of q]
fi
endgroup
-enddef;
+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 :
+ if a_ < 0 :
point 0 of p{direction 0 of p}
else :
subpath(0,a_) of p
fi
...
- if b_<0 :
+ if b_ < 0 :
{direction infinity of q} point infinity of q
else :
subpath(b_,infinity) of q
@@ -372,14 +377,13 @@ 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 :
+ if t < 0 :
cuttings := point 0 of a ;
a
else :
@@ -392,7 +396,7 @@ enddef ;
tertiarydef a cutafter b =
reverse (reverse a cutbefore b)
hide(cuttings := reverse cuttings)
-enddef;
+enddef ;
% special operators
@@ -421,7 +425,7 @@ 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_ :
+ if uu < u_ :
u_ := uu ;
fi
endfor
@@ -432,7 +436,7 @@ 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_ :
+ if uu > u_ :
u_ := uu ;
fi
endfor
@@ -464,10 +468,10 @@ 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 ;
+ 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 :
@@ -529,7 +533,7 @@ pc := 11.95517 ;
cc := 12.79213 ;
in := 72 ;
-vardef magstep primary m =
+vardef magstep primary m = % obsolete
mexp(46.67432m)
enddef ;
@@ -582,7 +586,7 @@ def erase text t =
withcolor background hide(def _e_ = enddef ;)
enddef ;
t _e_
-enddef;
+enddef ;
def _e_ = enddef ;
@@ -599,7 +603,7 @@ vardef image(text t) =
currentpicture := nullpicture ;
t ;
currentpicture
-enddef;
+enddef ;
def pickup secondary q =
if numeric q :
@@ -630,7 +634,7 @@ def pen_pickup_ primary q =
pen_top :=ypart penoffset left of currentpen ;
pen_bot :=ypart penoffset right of currentpen ;
path currentpen_path ;
-enddef;
+enddef ;
newinternal pen_lft, pen_rt, pen_top, pen_bot, pen_count_ ;
@@ -642,7 +646,7 @@ vardef savepen =
pen_bot_ [pen_count_] = pen_bot ;
pen_path_[pen_count_] = currentpen_path ;
pen_count_
-enddef;
+enddef ;
def clearpen = currentpen:=nullpen;
pen_lft := pen_rt := pen_top := pen_bot := 0 ;
@@ -664,7 +668,7 @@ 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)
+ y@# = .5(y@#l+y@#r) ; % ; added HH
enddef ;
path path_.l, path_.r ;
@@ -688,7 +692,7 @@ vardef arrowhead expr p =
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;
+enddef ;
path _apth ;
@@ -698,7 +702,7 @@ def drawdblarrow expr p = _apth := p ; _findarr enddef ;
def _finarr text t =
draw _apth t ;
filldraw arrowhead _apth t
-enddef;
+enddef ;
def _findarr text t =
draw _apth t ;
@@ -713,11 +717,10 @@ newinternal bboxmargin ;
bboxmargin := 2bp ; % this can bite you
vardef bbox primary p =
- llcorner p-( bboxmargin, bboxmargin)
- -- lrcorner p+( bboxmargin,-bboxmargin)
- -- urcorner p+( bboxmargin, bboxmargin)
- -- ulcorner p+(-bboxmargin, bboxmargin)
- -- cycle
+ llcorner p - ( bboxmargin, bboxmargin) --
+ lrcorner p + ( bboxmargin,-bboxmargin) --
+ urcorner p + ( bboxmargin, bboxmargin) --
+ ulcorner p + (-bboxmargin, bboxmargin) -- cycle
enddef ;
string defaultfont ; newinternal defaultscale, labeloffset ;
@@ -734,7 +737,7 @@ vardef thelabel@#(expr s,z) = % Position s near z
p = s infont defaultfont scaled defaultscale
fi ;
p shifted (z + labeloffset*laboff@# - ( labxf@#*lrcorner p + labyf@#*ulcorner p + (1-labxf@#-labyf@#)*llcorner p) )
-enddef;
+enddef ;
def label =
draw thelabel
@@ -747,7 +750,7 @@ dotlabeldiam := 3bp ;
vardef dotlabel@#(expr s,z) text t_ =
label@#(s,z) t_ ;
% label@#(s,z) ;
- interim linecap:=rounded ;
+ interim linecap := rounded ;
draw z withpen pencircle scaled dotlabeldiam t_ ;
enddef ;
@@ -755,6 +758,8 @@ def makelabel =
dotlabel
enddef ;
+% this will be overloaded
+
pair laboff, laboff.lft, laboff.rt, laboff.top, laboff.bot ;
pair laboff.ulft, laboff.llft, laboff.urt, laboff.lrt ;
@@ -774,6 +779,8 @@ vardef labels@#(text t) =
endfor
enddef ;
+% til lhere
+
vardef dotlabels@#(text t) =
forsuffixes $=t:
dotlabel@#(str$,z$) ;
@@ -818,14 +825,14 @@ def beginfig(expr c) =
pickup defaultpen ;
drawoptions() ;
scantokens extra_beginfig ;
-enddef;
+enddef ;
def endfig =
; % added by HH
scantokens extra_endfig ;
shipit ;
endgroup
-enddef;
+enddef ;
%% last-minute items
diff --git a/metapost/context/base/mp-butt.mp b/metapost/context/base/mp-butt.mpii
index 3ae3dc983..a3599b7c0 100644
--- a/metapost/context/base/mp-butt.mp
+++ b/metapost/context/base/mp-butt.mpii
@@ -11,22 +11,26 @@
%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 ;
+if known context_butt : endinput ; fi ;
boolean context_butt ; context_butt := true ;
-def some_button (expr button_type, button_size, button_linecolor, button_fillcolor) =
+def predefinedbutton (expr button_type, button_size, button_linecolor, button_fillcolor) =
+
+ begingroup ;
+
+ save button_linewidth, p, d, l ;
numeric button_linewidth ; button_linewidth := button_size/10 ;
drawoptions (withpen pencircle scaled button_linewidth withcolor button_linecolor) ;
- path p ; p := unitsquare scaled button_size ;
+ path p ; p := unitsquare scaled button_size ;
numeric d ; d := button_size ;
numeric l ; l := button_linewidth ;
- fill p withcolor button_fillcolor ; draw p ;
+ fill p withcolor button_fillcolor ;
+ draw p ;
if button_type = 101 :
draw (d-2l,2l)--(2l,.5d)--(d-2l,d-2l)--cycle ;
@@ -66,6 +70,10 @@ def some_button (expr button_type, button_size, button_linecolor, button_fillcol
endfor ;
fi ;
+ endgroup ;
+
enddef ;
+let some_button = predefinedbutton
+
endinput ;
diff --git a/metapost/context/base/mp-butt.mpiv b/metapost/context/base/mp-butt.mpiv
new file mode 100644
index 000000000..a3599b7c0
--- /dev/null
+++ b/metapost/context/base/mp-butt.mpiv
@@ -0,0 +1,79 @@
+%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 known context_butt : endinput ; fi ;
+
+boolean context_butt ; context_butt := true ;
+
+def predefinedbutton (expr button_type, button_size, button_linecolor, button_fillcolor) =
+
+ begingroup ;
+
+ save button_linewidth, p, d, l ;
+
+ numeric button_linewidth ; button_linewidth := button_size/10 ;
+
+ drawoptions (withpen pencircle scaled button_linewidth withcolor button_linecolor) ;
+
+ path p ; p := unitsquare scaled button_size ;
+ numeric d ; d := button_size ;
+ numeric l ; l := button_linewidth ;
+
+ fill p withcolor button_fillcolor ;
+ draw p ;
+
+ if button_type = 101 :
+ draw (d-2l,2l)--(2l,.5d)--(d-2l,d-2l)--cycle ;
+ elseif button_type = 102 :
+ draw (2l,2l)--(d-2l,.5d)--(2l,d-2l)--cycle ;
+ elseif button_type = 103 :
+ for i=2l step 2l until d-2l :
+ draw (2l,i)--(2l ,i) ;
+ draw (4l,i)--(d-2l,i) ;
+ endfor ;
+ elseif button_type = 104 :
+ for i=2l step 2l until d-2l :
+ draw (2l ,i)--(d/2-l,i) ;
+ draw (d/2+l,i)--(d-2l ,i) ;
+ endfor ;
+ elseif button_type = 105 :
+ fill fullcircle scaled (.2d) shifted (.5d,.7d) ;
+ fill fullcircle xscaled (.6d) yscaled d shifted (.5d,0) ;
+ clip currentpicture to p ;
+ draw p ;
+ elseif button_type = 106 :
+ draw (2l,2l)--(d-2l,d-2l) ;
+ draw (d-2l,2l)--(2l,d-2l) ;
+ elseif button_type = 107 :
+ p := (3l,d-2l)--(d-3l,d-2l)--(.5d,4l)--cycle ;
+ fill p ; draw p ;
+ draw (.5d,2l) ;
+ elseif button_type = 108 :
+ draw (.5d,2l)--(d-2l,d-2l)--(2l,d-2l)--cycle ;
+ elseif button_type = 109 :
+ draw (.5d,d-2l)--(d-2l,2l)--(2l,2l)--cycle ;
+ elseif button_type = 110 :
+ button_linewidth := button_linewidth/2 ;
+ draw p enlarged (-2l,-l) ;
+ for i=2l step l until d-2l :
+ draw (3l,i)--(d-3l,i) ;
+ endfor ;
+ fi ;
+
+ endgroup ;
+
+enddef ;
+
+let some_button = predefinedbutton
+
+endinput ;
diff --git a/metapost/context/base/mp-char.mpii b/metapost/context/base/mp-char.mpii
new file mode 100644
index 000000000..788099f2c
--- /dev/null
+++ b/metapost/context/base/mp-char.mpii
@@ -0,0 +1,1018 @@
+% 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_shap : input "mp-shap.mpii" ; fi ;
+if known context_flow : 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 [][] ;
+ picture xypicture[][] ;
+
+ 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 flush_pictures =
+ for x=1 upto max_x :
+ for y=1 upto max_y :
+ flush_picture (x, y) ;
+ endfor ;
+ endfor ;
+enddef ;
+
+
+def draw_connection_point (expr x, y, z) =
+ pickup pencircle scaled if (z=0): 2 fi xyline[x][y] ;
+ drawdot xy_bottom(x,y,z,false) scaled_to_grid withcolor (1,0,0) ;
+ drawdot xy_top (x,y,z,false) scaled_to_grid withcolor (0,1,0) ;
+ drawdot xy_left (x,y,z,false) scaled_to_grid withcolor (0,0,1) ;
+ drawdot xy_right (x,y,z,false) scaled_to_grid withcolor (1,1,0) ;
+enddef ;
+
+def flush_shape (expr x, yy) =
+ begingroup ;
+ save y ;
+ y := y_pos(yy) ;
+ if not xyfree[x][y] :
+ pickup pencircle scaled xyline[x][y] ;
+ if xypeep[x][y] :
+ fill (xypath[x][y] peepholed (unitsquare shifted (x,y)))
+ scaled_to_grid withpen pencircle scaled 0
+ withcolor chart_background_color ;
+ else :
+ fill xypath[x][y] scaled_to_grid withcolor xyfill[x][y] ;
+ fi ;
+ draw xypath[x][y] scaled_to_grid withcolor xydraw[x][y] ;
+ if show_con_points or show_all_points :
+ draw_connection_point (x, y, 0) ;
+ fi ;
+ if show_all_points :
+ for i=-1 upto 1 :
+ draw_connection_point (x, y, i) ;
+ endfor ;
+ fi ;
+ fi ;
+ endgroup ;
+enddef ;
+
+vardef points_initialized (expr xfrom, yfrom, xto, yto, n) =
+ if not xyfree[xfrom][yfrom] and not xyfree[xto][yto] :
+ xypoint := n ; true
+ else :
+ xypoint := 0 ; false
+ fi
+enddef ;
+
+def collapse_points =
+ % remove redundant points
+ n := 1 ;
+ for i=2 upto xypoint:
+ if not (xypoints[i]=xypoints[n]) :
+ n := n + 1 ;
+ xypoints[n] := xypoints[i]
+ fi ;
+ endfor ;
+ xypoint := n ;
+ % make straight lines
+ if xypoints[2]=xypoints[xypoint-1] :
+ xypoints[3] := xypoints[xypoint] ;
+ xypoint := 3 ;
+ fi ;
+enddef ;
+
+vardef 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 ;
+
+def flush_picture(expr x, y) =
+ if known xypicture[x][y]:
+ draw xypicture[x][y] shifted xy_offset((x+0.5)*grid_width,(max_y-y+1.5)*grid_height) ;
+ fi ;
+enddef ;
+
+def chart_draw_picture(expr x, y, p) =
+ xypicture[x][y] := p ;
+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 ;
+ flush_pictures ;
+ 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-char.mpiv b/metapost/context/base/mp-char.mpiv
new file mode 100644
index 000000000..f2bbb8b68
--- /dev/null
+++ b/metapost/context/base/mp-char.mpiv
@@ -0,0 +1,1019 @@
+%D \module
+%D [ file=mp-char.mp,
+%D version=2011.10.1, % 1998.10.10,
+%D title=\CONTEXT\ \METAPOST\ graphics,
+%D subtitle=charts,
+%D author=Hans Hagen,
+%D date=\currentdate,
+%D copyright={PRAGMA / 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 This is ancient code .. but I see no need to rewrite it.
+
+if unknown context_shap : input "mp-shap.mpiv" ; fi ;
+if known context_flow : endinput ; fi ;
+
+boolean context_flow ; context_flow := true ;
+
+%D settings
+
+numeric flow_grid_width ; flow_grid_width := 60pt ;
+numeric flow_shape_width ; flow_shape_width := 45pt ;
+numeric flow_grid_height ; flow_grid_height := 40pt ;
+numeric flow_shape_height ; flow_shape_height := 30pt ;
+numeric flow_chart_offset ; flow_chart_offset := 2pt ;
+color flow_chart_background_color ; flow_chart_background_color := white ;
+boolean flow_show_mid_points ; flow_show_mid_points := false ;
+boolean flow_show_con_points ; flow_show_con_points := false ;
+boolean flow_show_all_points ; flow_show_all_points := false ;
+numeric flow_shape_line_width ; flow_shape_line_width := 2pt ;
+color flow_shape_line_color ; flow_shape_line_color := .5white ;
+color flow_shape_fill_color ; flow_shape_fill_color := .9white ;
+color flow_connection_line_color ; flow_connection_line_color := .2white ;
+
+numeric flow_connection_line_width ; flow_connection_line_width := flow_shape_line_width ;
+
+numeric flow_connection_smooth_size ; flow_connection_smooth_size := 5pt ;
+numeric flow_connection_arrow_size ; flow_connection_arrow_size := 4pt ;
+numeric flow_connection_dash_size ; flow_connection_dash_size := 3pt ;
+
+numeric flow_max_x ; flow_max_x := 6 ;
+numeric flow_max_y ; flow_max_y := 4 ;
+
+boolean flow_smooth ; flow_smooth := true ;
+boolean flow_peepshape ; flow_peepshape := false ;
+boolean flow_arrowtip ; flow_arrowtip := true ;
+boolean flow_dashline ; flow_dashline := false ;
+boolean flow_forcevalid ; flow_forcevalid := false ;
+boolean flow_touchshape ; flow_touchshape := false ;
+boolean flow_showcrossing ; flow_showcrossing := false ;
+boolean flow_reverse_y ; flow_reverse_y := true ;
+
+picture flow_dash_pattern ; flow_dash_pattern := nullpicture ;
+
+numeric flow_shape_node ; flow_shape_node := 0 ;
+numeric flow_shape_action ; flow_shape_action := 24 ;
+numeric flow_shape_procedure ; flow_shape_procedure := 5 ;
+numeric flow_shape_product ; flow_shape_product := 12 ;
+numeric flow_shape_decision ; flow_shape_decision := 14 ;
+numeric flow_shape_archive ; flow_shape_archive := 19 ;
+numeric flow_shape_loop ; flow_shape_loop := 35 ;
+numeric flow_shape_wait ; flow_shape_wait := 6 ;
+numeric flow_shape_subprocedure ; flow_shape_subprocedure := 20 ;
+numeric flow_shape_singledocument ; flow_shape_singledocument := 32 ;
+numeric flow_shape_multidocument ; flow_shape_multidocument := 33 ;
+numeric flow_shape_right ; flow_shape_right := 66 ;
+numeric flow_shape_left ; flow_shape_left := 67 ;
+numeric flow_shape_up ; flow_shape_up := 68 ;
+numeric flow_shape_down ; flow_shape_down := 69 ;
+
+% vardef some_shape_path (expr type) == imported from mp-shap
+
+def flow_show_shapes(expr n) =
+ flow_begin_chart(n,8,10) ;
+ flow_show_con_points := true ;
+ for i=0 upto 7 :
+ for j=0 upto 9 :
+ flow_new_shape(i+1,j+1,i*10+j);
+ endfor ;
+ endfor ;
+ flow_end_chart ;
+enddef ;
+
+%D connections
+
+def flow_new_chart =
+
+ flow_grid_width := 60pt ;
+ flow_shape_width := 45pt ;
+ flow_grid_height := 40pt ;
+ flow_shape_height := 30pt ;
+ flow_chart_offset := 2pt ;
+ flow_chart_background_color := white ;
+ flow_show_mid_points := false ;
+ flow_show_con_points := false ;
+ flow_show_all_points := false ;
+ flow_shape_line_width := 2pt ;
+ flow_shape_line_color := .5white ;
+ flow_shape_fill_color := .9white ;
+ flow_connection_line_color := .2white ;
+ flow_connection_line_width := flow_shape_line_width ;
+ flow_connection_smooth_size := 5pt ;
+ flow_connection_arrow_size := 4pt ;
+ flow_connection_dash_size := 3pt ;
+
+ flow_max_x := 6 ;
+ flow_max_y := 4 ;
+
+ flow_smooth := true ;
+ flow_peepshape := false ;
+ flow_arrowtip := true ;
+ flow_dashline := false ;
+ flow_forcevalid := false ;
+ flow_touchshape := false ;
+ flow_showcrossing := false ;
+ flow_reverse_y := true ;
+
+ flow_dash_pattern := nullpicture ;
+
+ numeric flow_xypoint ; flow_xypoint := 0 ;
+ numeric flow_cpath ; flow_cpath := 0 ;
+
+ pair flow_xypoints [] ;
+ boolean flow_xyfree [][] ;
+ path flow_xypath [][] ;
+ numeric flow_xysx [][] ;
+ numeric flow_xysy [][] ;
+ color flow_xyfill [][] ;
+ color flow_xydraw [][] ;
+ numeric flow_xyline [][] ;
+ boolean flow_xypeep [][] ;
+ picture flow_xytext [][] ;
+ picture flow_xylabel_l[][] ;
+ picture flow_xylabel_r[][] ;
+ picture flow_xylabel_t[][] ;
+ picture flow_xylabel_b[][] ;
+ picture flow_xyexit_l [][] ;
+ picture flow_xyexit_r [][] ;
+ picture flow_xyexit_t [][] ;
+ picture flow_xyexit_b [][] ;
+ path flow_cpaths [] ;
+ numeric flow_cline [] ;
+ color flow_ccolor [] ;
+ boolean flow_carrow [] ;
+ boolean flow_cdash [] ;
+ boolean flow_ccross [] ;
+
+ picture flow_tpicture[][] ;
+ picture flow_bpicture[][] ;
+ picture flow_lpicture[][] ;
+ picture flow_rpicture[][] ;
+
+ predefined_shapes[61] := (fullcircle scaled (1.5*predefined_shapes_yradius) xscaled (flow_grid_height/flow_grid_width)) ;
+ predefined_shapes[62] := (fullcircle scaled (2.0*predefined_shapes_yradius) xscaled (flow_grid_height/flow_grid_width)) ;
+
+enddef ;
+
+flow_new_chart ;
+
+def flow_y_pos(expr y) =
+ if flow_reverse_y :
+ flow_max_y + 1 - y
+ else :
+ y
+ fi
+enddef ;
+
+def flow_initialize_grid(expr maxx, maxy) =
+ flow_max_x := maxx ;
+ flow_max_y := maxy ;
+ flow_dsp_x := 0 ;
+ flow_dsp_y := 0 ;
+ for x=1 upto flow_max_x :
+ for y=1 upto flow_max_y :
+ flow_xyfree[x][y] := true ;
+ flow_xyfill[x][y] := flow_shape_fill_color ;
+ flow_xydraw[x][y] := flow_shape_line_color ;
+ flow_xyline[x][y] := flow_shape_line_width ;
+ endfor ;
+ endfor ;
+enddef ;
+
+def flow_scaled_to_grid =
+ xscaled flow_grid_width yscaled flow_grid_height
+enddef ;
+
+def flow_xy_offset(expr x, y) =
+ (x+.5,y+.5)
+enddef ;
+
+def flow_draw_shape(expr x, yy, p, sx, sy) =
+ begingroup ;
+ save y ; numeric y ;
+ y := flow_y_pos(yy) ;
+ flow_xypath [x][y] := (p xscaled sx yscaled sy) shifted flow_xy_offset(x,y) ;
+ flow_xyfree [x][y] := false ;
+ flow_xysx [x][y] := sx ;
+ flow_xysy [x][y] := sy ;
+ flow_xyfill [x][y] := flow_shape_fill_color ;
+ flow_xydraw [x][y] := flow_shape_line_color ;
+ flow_xyline [x][y] := flow_shape_line_width ;
+ flow_xypeep [x][y] := flow_peepshape ;
+ endgroup ;
+enddef ;
+
+vardef flow_i_point (expr x, y, p, t) =
+ begingroup ;
+ save q, ok ; pair q ; boolean ok ;
+ q := flow_xypath[x][y] intersection_point ((p) shifted flow_xy_offset(x,y)) ;
+ ok := true ;
+ if not ok :
+ message (t & " of shape (" & decimal x & "," & decimal y & ") limited") ;
+ fi ;
+ q
+ endgroup
+enddef ;
+
+vardef flow_trimmed (expr x, y, z, t) =
+ if flow_touchshape and t :
+ flow_xyline[x][y]/z
+ else :
+ epsilon
+ fi
+enddef ;
+
+numeric flow_zfactor ; flow_zfactor := 1/3 ;
+
+vardef flow_xy_bottom (expr x, y, z, t) =
+ flow_i_point(x, y, ((0,0)--(0,-2)) shifted (flow_zfactor*z*flow_xysx[x][y],0), "bottom")
+ shifted(0,-flow_trimmed(x,y,flow_grid_height,t))
+enddef ;
+
+vardef flow_xy_top (expr x, y, z, t) =
+ flow_i_point (x, y, ((0,0)--(0,2)) shifted (flow_zfactor*z*flow_xysx[x][y],0), "top")
+ shifted(0,flow_trimmed(x,y,flow_grid_height,t))
+enddef ;
+
+vardef flow_xy_left (expr x, y, z, t) =
+ flow_i_point (x, y, ((0,0)--(-2,0)) shifted (0,flow_zfactor*z*flow_xysy[x][y]), "left")
+ shifted(-flow_trimmed(x,y,flow_grid_width,t),0)
+enddef ;
+
+vardef flow_xy_right (expr x, y, z, t) =
+ flow_i_point (x, y, ((0,0)--(2,0)) shifted (0,flow_zfactor*z*flow_xysy[x][y]), "right")
+ shifted(flow_trimmed(x,y,flow_grid_width,t),0)
+enddef ;
+
+def flow_flush_shapes =
+ for x=1 upto flow_max_x :
+ for y=1 upto flow_max_y :
+ flow_flush_shape(x, y) ;
+ endfor ;
+ endfor ;
+enddef ;
+
+def flow_flush_pictures =
+ for x=1 upto flow_max_x :
+ for y=1 upto flow_max_y :
+ flow_flush_picture(x, y) ;
+ endfor ;
+ endfor ;
+enddef ;
+
+def flow_draw_connection_point(expr x, y, z) =
+ pickup pencircle scaled if (z=0): 2 fi flow_xyline[x][y] ;
+ drawdot flow_xy_bottom(x,y,z,false) flow_scaled_to_grid withcolor (1,0,0) ;
+ drawdot flow_xy_top (x,y,z,false) flow_scaled_to_grid withcolor (0,1,0) ;
+ drawdot flow_xy_left (x,y,z,false) flow_scaled_to_grid withcolor (0,0,1) ;
+ drawdot flow_xy_right (x,y,z,false) flow_scaled_to_grid withcolor (1,1,0) ;
+enddef ;
+
+def flow_flush_shape(expr x, yy) =
+ begingroup ;
+ save y ; numeric y ;
+ y := flow_y_pos(yy) ;
+ if not flow_xyfree[x][y] :
+ pickup pencircle scaled flow_xyline[x][y] ;
+ if flow_xypeep[x][y] :
+ fill (flow_xypath[x][y] peepholed (unitsquare shifted (x,y)))
+ flow_scaled_to_grid withpen pencircle scaled 0
+ withcolor flow_chart_background_color ;
+ else :
+ fill flow_xypath[x][y] flow_scaled_to_grid withcolor flow_xyfill[x][y] ;
+ fi ;
+ draw flow_xypath[x][y] flow_scaled_to_grid withcolor flow_xydraw[x][y] ;
+ if flow_show_con_points or flow_show_all_points :
+ flow_draw_connection_point(x, y, 0) ;
+ fi ;
+ if flow_show_all_points :
+ for i=-1 upto 1 :
+ flow_draw_connection_point(x, y, i) ;
+ endfor ;
+ fi ;
+ fi ;
+ endgroup ;
+enddef ;
+
+vardef flow_points_initialized(expr xfrom, yfrom, xto, yto, n) =
+ if not flow_xyfree[xfrom][yfrom] and not flow_xyfree[xto][yto] :
+ flow_xypoint := n ; true
+ else :
+ flow_xypoint := 0 ; false
+ fi
+enddef ;
+
+def flow_collapse_points = % this can become a core macro
+ begingroup ;
+ % remove redundant points
+ save n ; numeric n ;
+ n := 1 ;
+ for i=2 upto flow_xypoint :
+ if not (flow_xypoints[i] = flow_xypoints[n]) :
+ n := n + 1 ;
+ flow_xypoints[n] := flow_xypoints[i]
+ fi ;
+ endfor ;
+ flow_xypoint := n ;
+ % make straight lines
+ if flow_xypoints[2] = flow_xypoints[flow_xypoint-1] :
+ flow_xypoints[3] := flow_xypoints[flow_xypoint] ;
+ flow_xypoint := 3 ;
+ fi ;
+ endgroup ;
+enddef ;
+
+vardef flow_smooth_connection(expr a,b) =
+ if ypart a = ypart b :
+ a shifted ( if xpart a >= xpart b : - fi (flow_connection_smooth_size/flow_grid_width ),0)
+ else :
+ a shifted (0,if ypart a >= ypart b : - fi (flow_connection_smooth_size/flow_grid_height) )
+ fi
+enddef ;
+
+vardef flow_trim_points =
+ begingroup
+ save p, a, b, d, i ; numeric a, b ; path p ; pair d ;
+ p := for i=1 upto flow_xypoint-1 : flow_xypoints[i]-- endfor flow_xypoints[flow_xypoint] ;
+ if flow_touchshape :
+ a := flow_shape_line_width/flow_grid_width ;
+ b := flow_shape_line_width/flow_grid_height ;
+ else :
+ a := epsilon ;
+ b := epsilon ;
+ fi ;
+ d := direction infinity of p ;
+ flow_xypoints[flow_xypoint] := flow_xypoints[flow_xypoint] shifted
+ if xpart d < 0 : (+a,0) ;
+ elseif xpart d > 0 : (-a,0) ;
+ elseif ypart d < 0 : (0,+b) ;
+ elseif ypart d > 0 : (0,-b) ;
+ else : origin ;
+ fi ;
+ d := direction 0 of p ;
+ flow_xypoints[1] := flow_xypoints[1] shifted
+ if xpart d < 0 : (-a,0) ;
+ elseif xpart d > 0 : (+a,0) ;
+ elseif ypart d < 0 : (0,-b) ;
+ elseif ypart d > 0 : (0,+b) ;
+ else : origin ;
+ fi ;
+ endgroup
+enddef ;
+
+vardef flow_trim_points = enddef ;
+
+vardef flow_connection_path =
+ if flow_reverse_connection : reverse fi (flow_xypoints[1] --
+ for i=2 upto flow_xypoint-1 :
+ if flow_smooth :
+ flow_smooth_connection(flow_xypoints[i],flow_xypoints[i-1]) ..
+ controls flow_xypoints[i] and flow_xypoints[i] ..
+ flow_smooth_connection(flow_xypoints[i],flow_xypoints[i+1]) --
+ else :
+ flow_xypoints[i] --
+ fi
+ endfor
+ flow_xypoints[flow_xypoint])
+enddef ;
+
+def flow_draw_connection =
+ if flow_xypoint > 0 :
+ flow_collapse_points ;
+ flow_trim_points ;
+ flow_cpath := flow_cpath + 1 ;
+ flow_cpaths[flow_cpath] := flow_connection_path flow_scaled_to_grid ;
+ flow_cline[flow_cpath] := flow_connection_line_width ;
+ flow_ccolor[flow_cpath] := flow_connection_line_color ;
+ flow_carrow[flow_cpath] := flow_arrowtip ;
+ flow_cdash[flow_cpath] := flow_dashline ;
+ flow_ccross[flow_cpath] := flow_showcrossing ;
+ else :
+ message("no connection defined") ;
+ fi ;
+ flow_reverse_connection := false ;
+enddef ;
+
+def flow_flush_connections = % protect locals
+ begingroup ;
+ save ip, crossing, cp ; numeric ip ; boolean crossing ; path cp ;
+ ahlength := flow_connection_arrow_size ;
+ flow_dash_pattern := dashpattern(on flow_connection_dash_size off flow_connection_dash_size) ;
+ for i=1 upto flow_cpath :
+ if flow_ccross[i] :
+ crossing := false ;
+ for j=1 upto i :
+ if not (point infinity of flow_cpaths[i] = point infinity of flow_cpaths[j]) :
+ ip := flow_cpaths[i] intersection_point flow_cpaths[j] ;
+ if intersection_found : crossing := true fi ;
+ fi ;
+ endfor ;
+ if crossing :
+ pickup pencircle scaled 2flow_cline[i] ;
+ cp := flow_cpaths[i] ;
+ cp := cp cutbefore point .05 length cp of cp ;
+ cp := cp cutafter point .95 length cp of cp ;
+ draw cp withcolor flow_chart_background_color ;
+ fi ;
+ fi ;
+ pickup pencircle scaled flow_cline[i] ;
+ if flow_carrow[i] :
+ if flow_cdash[i] :
+ drawarrow flow_cpaths[i] withcolor flow_ccolor[i] dashed flow_dash_pattern ;
+ else :
+ drawarrow flow_cpaths[i] withcolor flow_ccolor[i] ;
+ fi ;
+ else :
+ if flow_cdash[i] :
+ draw flow_cpaths[i] withcolor flow_ccolor[i] dashed flow_dash_pattern ;
+ else :
+ draw flow_cpaths[i] withcolor flow_ccolor[i] ;
+ fi ;
+ fi ;
+ flow_draw_midpoint(i) ;
+ endfor ;
+ endgroup ;
+enddef ;
+
+def flow_draw_midpoint (expr n) =
+ begingroup
+ save p ; pair p ;
+ p := point .5*length(flow_cpaths[n]) of flow_cpaths[n];
+ pickup pencircle scaled 2flow_cline[n] ;
+ if flow_show_mid_points :
+ drawdot p withcolor .7white ;
+ fi ;
+ endgroup ;
+enddef ;
+
+def flow_flush_picture(expr x, yy) =
+ begingroup ; save y ; numeric y ;
+ y := flow_y_pos(yy) ;
+ if known flow_xytext[x][y] :
+ begingroup ;
+ % flow_xypath[x][y]
+ save p, offset ; path p ; pair offset ;
+ offset := flow_xy_offset((x+0.5)*flow_grid_width,(flow_max_y-y+1.5)*flow_grid_height) ;
+ offset := offset shifted (-flow_xyline[x][y]/4,-flow_xyline[x][y]/4) ; % terrible hack (some compensation)
+ p := fullsquare
+ xscaled flow_grid_width
+ yscaled flow_grid_height
+ shifted offset ;
+ if known flow_xytext[x][y]:
+ draw flow_xytext[x][y] shifted offset ;
+ fi ;
+ if known flow_xylabel_t[x][y] :
+ label.urt(flow_xylabel_t[x][y],0.5[ulcorner p,urcorner p]) ;
+ fi ;
+ if known flow_xylabel_b[x][y] :
+ label.lrt(flow_xylabel_b[x][y],0.5[llcorner p,lrcorner p]) ;
+ fi ;
+ if known flow_xylabel_l[x][y] :
+ label.ulft(flow_xylabel_l[x][y],0.5[ulcorner p,llcorner p]) ;
+ fi ;
+ if known flow_xylabel_r[x][y] :
+ label.urt (flow_xylabel_r[x][y],0.5[urcorner p,lrcorner p]) ;
+ fi ;
+ if known flow_xyexit_t[x][y] :
+ label.top(flow_xyexit_t[x][y],0.5[ulcorner p,urcorner p] shifted (0, flow_grid_height/2)) ;
+ fi ;
+ if known flow_xyexit_b[x][y] :
+ label.bot(flow_xyexit_b[x][y],0.5[llcorner p,lrcorner p] shifted (0,-flow_grid_height/2)) ;
+ fi ;
+ if known flow_xyexit_l[x][y] :
+ label.lft(flow_xyexit_l[x][y],0.5[ulcorner p,llcorner p] shifted (-flow_grid_width/2,0)) ;
+ fi ;
+ if known flow_xyexit_r[x][y] :
+ label.rt (flow_xyexit_r[x][y],0.5[urcorner p,lrcorner p] shifted ( flow_grid_width/2,0)) ;
+ fi ;
+ endgroup ;
+ fi ;
+ endgroup ;
+enddef ;
+
+def flow_chart_draw_text(expr x, y, p) =
+ flow_xytext[x][y] := p ;
+enddef ;
+
+def flow_chart_draw_label_t(expr x, y, p) = flow_xylabel_t[x][y] := p ; enddef ;
+def flow_chart_draw_label_b(expr x, y, p) = flow_xylabel_b[x][y] := p ; enddef ;
+def flow_chart_draw_label_l(expr x, y, p) = flow_xylabel_l[x][y] := p ; enddef ;
+def flow_chart_draw_label_r(expr x, y, p) = flow_xylabel_r[x][y] := p ; enddef ;
+
+def flow_chart_draw_exit_t (expr x, y, p) = flow_xyexit_t [x][y] := p ; enddef ;
+def flow_chart_draw_exit_b (expr x, y, p) = flow_xyexit_b [x][y] := p ; enddef ;
+def flow_chart_draw_exit_l (expr x, y, p) = flow_xyexit_l [x][y] := p ; enddef ;
+def flow_chart_draw_exit_r (expr x, y, p) = flow_xyexit_r [x][y] := p ; enddef ;
+
+boolean flow_reverse_connection ; flow_reverse_connection := false ;
+
+vardef flow_up_on_grid (expr n) =
+ (xpart flow_xypoints[n],(ypart flow_xypoints[n]+1) div 1)
+enddef ;
+
+vardef flow_down_on_grid (expr n) =
+ (xpart flow_xypoints[n],(ypart flow_xypoints[n]) div 1)
+enddef ;
+
+vardef flow_left_on_grid (expr n) =
+ ((xpart flow_xypoints[n]) div 1, ypart flow_xypoints[n])
+enddef ;
+
+vardef flow_right_on_grid (expr n) =
+ ((xpart flow_xypoints[n]+1) div 1, ypart flow_xypoints[n])
+enddef ;
+
+vardef flow_x_on_grid (expr n, xfrom, xto, zfrom) =
+ if (xfrom = xto) and not (zfrom = 0) :
+ if (zfrom=1) : flow_right_on_grid(2) else : flow_left_on_grid(2) fi
+ elseif xpart flow_xypoints[1] < xpart flow_xypoints[6] :
+ flow_right_on_grid(n)
+ else :
+ flow_left_on_grid(n)
+ fi
+enddef ;
+
+vardef flow_y_on_grid (expr n, yfrom, yto, zfrom) =
+ if (yfrom = yto) and not (zfrom = 0) :
+ if (zfrom = 1) : flow_up_on_grid(2) else : flow_down_on_grid(2) fi
+ elseif ypart flow_xypoints[1] < ypart flow_xypoints[6] :
+ flow_up_on_grid(n)
+ else :
+ flow_down_on_grid(n)
+ fi
+enddef ;
+
+vardef flow_xy_on_grid (expr n, m) =
+ (xpart flow_xypoints[n], ypart flow_xypoints[m])
+enddef ;
+
+vardef flow_down_to_grid (expr a,b) =
+ (xpart flow_xypoints[a], ypart flow_xypoints[if ypart flow_xypoints[a]<ypart flow_xypoints[b] : a else : b fi])
+enddef ;
+
+vardef flow_up_to_grid (expr a,b) =
+ (xpart flow_xypoints[a], ypart flow_xypoints[if ypart flow_xypoints[a]>ypart flow_xypoints[b] : a else : b fi])
+enddef ;
+
+vardef flow_left_to_grid (expr a,b) =
+ (xpart flow_xypoints[if xpart flow_xypoints[a]<xpart flow_xypoints[b] : a else : b fi], ypart flow_xypoints[a])
+enddef ;
+
+vardef flow_right_to_grid (expr a,b) =
+ (xpart flow_xypoints[if xpart flow_xypoints[a]>xpart flow_xypoints[b] : a else : b fi], ypart flow_xypoints[a])
+enddef ;
+
+vardef flow_valid_connection (expr xfrom, yfrom, xto, yto) =
+ begingroup ;
+ save ok, vc, pp ; boolean ok ; pair vc ; path pp ;
+ save flow_xyfirst, flow_xylast ; pair flow_xyfirst, flow_xylast ;
+ % check for slanted lines
+ ok := true ;
+ for i=1 upto flow_xypoint-1 :
+ if not ((xpart flow_xypoints[i]=xpart flow_xypoints[i+1]) or (ypart flow_xypoints[i]=ypart flow_xypoints[i+1])) :
+ ok := false ;
+ fi ;
+ endfor ;
+ if not ok :
+ % message("slanted");
+ false
+ elseif flow_forcevalid :
+ % message("force");
+ true
+ elseif (xfrom=xto) and (yfrom=yto) :
+ % message("self");
+ false
+ else :
+ % check for crossing shapes
+ flow_xyfirst := flow_xypoints[1] ;
+ flow_xylast := flow_xypoints[flow_xypoint] ;
+ flow_trim_points ;
+ pp := for i=1 upto flow_xypoint-1 : flow_xypoints[i]-- endfor flow_xypoints[flow_xypoint] ;
+ flow_xypoints[1] := flow_xyfirst ;
+ flow_xypoints[flow_xypoint] := flow_xylast ;
+ for i=1 upto flow_max_x :
+ for j=1 upto flow_max_y : % was bug: xfrom,yto
+ if not ( ( (i,j)=(xfrom,yfrom) ) or ( (i,j)=(xto,yto) ) ) :
+ if not flow_xyfree[i][j] :
+ vc := pp intersection_point flow_xypath[i][j] ;
+ if intersection_found :
+ ok := false
+ fi ;
+ fi ;
+ fi ;
+ endfor ;
+ endfor ;
+ % if not ok: message("crossing") ; fi ;
+ ok
+ fi
+ endgroup
+enddef ;
+
+def flow_connect_top_bottom (expr xfrom, yyfrom, zfrom) (expr xto, yyto, zto) =
+ yfrom := flow_y_pos(yyfrom) ;
+ yto := flow_y_pos(yyto) ;
+ if flow_points_initialized(xfrom,yfrom,xto,yto,6) :
+ flow_xypoints[1] := flow_xy_top(xfrom,yfrom,zfrom,true) ;
+ flow_xypoints[6] := flow_xy_bottom(xto,yto,zto,true) ;
+ flow_xypoints[2] := flow_up_on_grid(1) ;
+ flow_xypoints[5] := flow_down_on_grid(6) ;
+ flow_xypoints[3] := flow_up_to_grid(2,5) ;
+ flow_xypoints[4] := flow_up_to_grid(2,5) ;
+ if not flow_valid_connection(xfrom,yfrom,xto,yto) :
+ flow_xypoints[3] := flow_x_on_grid(2,xfrom,xto,zfrom) ;
+ flow_xypoints[4] := flow_xy_on_grid(3,5) ;
+ fi ;
+ %%%% begin experiment
+ flow_xypoints[3] := flow_xypoints[3] shifted (flow_dsp_x,0) ;
+ flow_xypoints[4] := flow_xypoints[4] shifted (flow_dsp_x,0) ;
+ if flow_dsp_y>0 :
+ flow_xypoints[2] := flow_xypoints[2] shifted (0,flow_dsp_y) ;
+ flow_xypoints[3] := flow_xypoints[3] shifted (0,flow_dsp_y) ;
+ elseif flow_dsp_y<0 :
+ flow_xypoints[4] := flow_xypoints[4] shifted (0,flow_dsp_y) ;
+ flow_xypoints[5] := flow_xypoints[5] shifted (0,flow_dsp_y) ;
+ fi
+ %%%% end experiment
+ flow_draw_connection ;
+ fi ;
+enddef ;
+
+def flow_connect_left_right (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) =
+ yfrom := flow_y_pos(yyfrom) ;
+ yto := flow_y_pos(yyto) ;
+ if flow_points_initialized(xfrom,yfrom,xto,yto,6) :
+ flow_xypoints[1] := flow_xy_left(xfrom,yfrom,zfrom,true) ;
+ flow_xypoints[6] := flow_xy_right(xto,yto,zto,true) ;
+ flow_xypoints[2] := flow_left_on_grid(1) ;
+ flow_xypoints[5] := flow_right_on_grid(6) ;
+ flow_xypoints[3] := flow_left_to_grid(2,5) ;
+ flow_xypoints[4] := flow_left_to_grid(2,5) ;
+ if not flow_valid_connection(xfrom,yfrom,xto,yto) :
+ flow_xypoints[3] := flow_y_on_grid(2,yfrom,yto,zfrom) ;
+ flow_xypoints[4] := flow_xy_on_grid(5,3) ;
+ fi ;
+ flow_draw_connection ;
+ fi ;
+enddef ;
+
+def flow_connect_left_top (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) =
+ yfrom := flow_y_pos(yyfrom) ;
+ yto := flow_y_pos(yyto) ;
+ if flow_points_initialized(xfrom,yfrom,xto,yto,5) :
+ flow_xypoints[1] := flow_xy_left(xfrom,yfrom,zfrom,true) ;
+ flow_xypoints[5] := flow_xy_top(xto,yto,zto,true) ;
+ flow_xypoints[2] := flow_left_on_grid(1) ;
+ flow_xypoints[4] := flow_up_on_grid(5) ;
+ flow_xypoints[3] := flow_left_to_grid(2,5) ;
+ if not flow_valid_connection(xfrom,yfrom,xto,yto) :
+ flow_xypoints[3] := flow_xy_on_grid(2,4) ;
+ fi ;
+ flow_draw_connection ;
+ fi ;
+enddef ;
+
+def flow_connect_left_bottom (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) =
+ yfrom := flow_y_pos(yyfrom) ;
+ yto := flow_y_pos(yyto) ;
+ if flow_points_initialized(xfrom,yfrom,xto,yto,5) :
+ flow_xypoints[1] := flow_xy_left(xfrom,yfrom,zfrom,true) ;
+ flow_xypoints[5] := flow_xy_bottom(xto,yto,zto,true) ;
+ flow_xypoints[2] := flow_left_on_grid(1) ;
+ flow_xypoints[4] := flow_down_on_grid(5) ;
+ flow_xypoints[3] := flow_left_to_grid(2,5) ;
+ if not flow_valid_connection(xfrom,yfrom,xto,yto) :
+ flow_xypoints[3] := flow_xy_on_grid(2,4) ;
+ fi ;
+ flow_draw_connection ;
+ fi ;
+enddef ;
+
+def flow_connect_right_top (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) =
+ yfrom := flow_y_pos(yyfrom) ;
+ yto := flow_y_pos(yyto) ;
+ if flow_points_initialized(xfrom,yfrom,xto,yto,5) :
+ flow_xypoints[1] := flow_xy_right(xfrom,yfrom,zfrom,true) ;
+ flow_xypoints[5] := flow_xy_top(xto,yto,zto,true) ;
+ flow_xypoints[2] := flow_right_on_grid(1) ;
+ flow_xypoints[4] := flow_up_on_grid(5) ;
+ flow_xypoints[3] := flow_right_to_grid(2,5) ;
+ if not flow_valid_connection(xfrom,yfrom,xto,yto) :
+ flow_xypoints[3] := flow_xy_on_grid(2,4) ;
+ fi ;
+ flow_draw_connection ;
+ fi ;
+enddef ;
+
+def flow_connect_right_bottom (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) =
+ yfrom := flow_y_pos(yyfrom) ;
+ yto := flow_y_pos(yyto) ;
+ if flow_points_initialized(xfrom,yfrom,xto,yto,5) :
+ flow_xypoints[1] := flow_xy_right(xfrom,yfrom,zfrom,true) ;
+ flow_xypoints[5] := flow_xy_bottom(xto,yto,zto,true) ;
+ flow_xypoints[2] := flow_right_on_grid(1) ;
+ flow_xypoints[4] := flow_down_on_grid(5) ;
+ flow_xypoints[3] := flow_right_to_grid(2,5) ;
+ if not flow_valid_connection(xfrom,yfrom,xto,yto) :
+ flow_xypoints[3] := flow_xy_on_grid(2,4) ;
+ fi ;
+ %%%% begin experiment
+ flow_xypoints[2] := flow_xypoints[2] shifted (flow_dsp_x,0) ;
+ flow_xypoints[3] := flow_xypoints[3] shifted (flow_dsp_x,0) ;
+ if flow_dsp_y>0 :
+ flow_xypoints[3] := flow_xypoints[3] shifted (0,-flow_dsp_y) ;
+ flow_xypoints[4] := flow_xypoints[4] shifted (0,-flow_dsp_y) ;
+ elseif flow_dsp_y<0 :
+ flow_xypoints[3] := flow_xypoints[3] shifted (0,flow_dsp_y) ;
+ flow_xypoints[4] := flow_xypoints[4] shifted (0,flow_dsp_y) ;
+ fi
+ %%%% end experiment
+ flow_draw_connection ;
+ fi ;
+enddef ;
+
+def flow_connect_left_left (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) =
+ yfrom := flow_y_pos(yyfrom) ;
+ yto := flow_y_pos(yyto) ;
+ if flow_points_initialized(xfrom,yfrom,xto,yto,6) :
+ flow_xypoints[1] := flow_xy_left(xfrom,yfrom,zfrom,true) ;
+ flow_xypoints[6] := flow_xy_left(xto,yto,zto,true) ;
+ flow_xypoints[2] := flow_left_on_grid(1) ;
+ flow_xypoints[5] := flow_left_on_grid(6) ;
+ flow_xypoints[3] := flow_left_to_grid(2,5) ;
+ flow_xypoints[4] := flow_left_to_grid(5,2) ;
+ if not flow_valid_connection(xfrom,yfrom,xto,yto) :
+ flow_xypoints[3] := flow_y_on_grid(2,yfrom,yto,zfrom) ;
+ flow_xypoints[4] := flow_xy_on_grid(5,3) ;
+ fi ;
+ flow_draw_connection ;
+ fi ;
+enddef ;
+
+def flow_connect_right_right (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) =
+ yfrom := flow_y_pos(yyfrom) ;
+ yto := flow_y_pos(yyto) ;
+ if flow_points_initialized(xfrom,yfrom,xto,yto,6) :
+ flow_xypoints[1] := flow_xy_right(xfrom,yfrom,zfrom,true) ;
+ flow_xypoints[6] := flow_xy_right(xto,yto,zto,true) ;
+ flow_xypoints[2] := flow_right_on_grid(1) ;
+ flow_xypoints[5] := flow_right_on_grid(6) ;
+ flow_xypoints[3] := flow_right_to_grid(2,5) ;
+ flow_xypoints[4] := flow_right_to_grid(5,2) ;
+ if not flow_valid_connection(xfrom,yfrom,xto,yto) :
+ flow_xypoints[3] := flow_y_on_grid(2,yfrom,yto,zfrom) ;
+ flow_xypoints[4] := flow_xy_on_grid(5,3) ;
+ fi ;
+ flow_draw_connection ;
+ fi ;
+enddef ;
+
+def flow_connect_top_top (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) =
+ yfrom := flow_y_pos(yyfrom) ;
+ yto := flow_y_pos(yyto) ;
+ if flow_points_initialized(xfrom,yfrom,xto,yto,6) :
+ flow_xypoints[1] := flow_xy_top(xfrom,yfrom,zfrom,true) ;
+ flow_xypoints[6] := flow_xy_top(xto,yto,zto,true) ;
+ flow_xypoints[2] := flow_up_on_grid(1) ;
+ flow_xypoints[5] := flow_up_on_grid(6) ;
+ flow_xypoints[3] := flow_up_to_grid(2,5) ;
+ flow_xypoints[4] := flow_up_to_grid(5,2) ;
+ if not flow_valid_connection(xfrom,yfrom,xto,yto) :
+ flow_xypoints[3] := flow_x_on_grid(2,xfrom,xto,zfrom) ;
+ flow_xypoints[4] := flow_xy_on_grid(3,5) ;
+ fi ;
+ flow_draw_connection ;
+ fi ;
+enddef ;
+
+def flow_connect_bottom_bottom (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) =
+ yfrom := flow_y_pos(yyfrom) ;
+ yto := flow_y_pos(yyto) ;
+ if flow_points_initialized(xfrom,yfrom,xto,yto,6) :
+ flow_xypoints[1] := flow_xy_bottom(xfrom,yfrom,zfrom,true) ;
+ flow_xypoints[6] := flow_xy_bottom(xto,yto,zto,true) ;
+ flow_xypoints[2] := flow_down_on_grid(1) ;
+ flow_xypoints[5] := flow_down_on_grid(6) ;
+ flow_xypoints[3] := flow_down_to_grid(2,5) ;
+ flow_xypoints[4] := flow_down_to_grid(5,2) ;
+ if not flow_valid_connection(xfrom,yfrom,xto,yto) :
+ flow_xypoints[3] := flow_x_on_grid(2,xfrom,xto,zfrom) ;
+ flow_xypoints[4] := flow_xy_on_grid(3,5) ;
+ fi ;
+ %%%% begin experiment
+ flow_xypoints[3] := flow_xypoints[3] shifted (flow_dsp_x,0) ;
+ flow_xypoints[4] := flow_xypoints[4] shifted (flow_dsp_x,0) ;
+ if flow_dsp_y<0 :
+ flow_xypoints[2] := flow_xypoints[2] shifted (0,-flow_dsp_y) ;
+ flow_xypoints[3] := flow_xypoints[3] shifted (0,-flow_dsp_y) ;
+ elseif flow_dsp_y>0 :
+ flow_xypoints[4] := flow_xypoints[4] shifted (0,flow_dsp_y) ;
+ flow_xypoints[5] := flow_xypoints[5] shifted (0,flow_dsp_y) ;
+ fi
+ %%%% end experiment
+ flow_draw_connection ;
+ fi ;
+enddef ;
+
+def flow_connect_bottom_top (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) =
+ flow_reverse_connection := true ;
+ flow_connect_top_bottom (xto,yto,zto) (xfrom,yfrom,zfrom) ;
+enddef ;
+
+def flow_connect_right_left (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) =
+ flow_reverse_connection := true ;
+ flow_connect_left_right (xto,yto,zto) (xfrom,yfrom,zfrom) ;
+enddef ;
+
+def flow_connect_top_left (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) =
+ flow_reverse_connection := true ;
+ flow_connect_left_top(xto,yto,zto) (xfrom,yfrom,zfrom) ;
+enddef ;
+
+def flow_connect_bottom_left (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) =
+ flow_reverse_connection := true ;
+ flow_connect_left_bottom (xto,yto,zto) (xfrom,yfrom,zfrom) ;
+enddef ;
+
+def flow_connect_top_right (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) =
+ flow_reverse_connection := true ;
+ flow_connect_right_top (xto,yto,zto) (xfrom,yfrom,zfrom) ;
+enddef ;
+
+def flow_connect_bottom_right (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) =
+ flow_reverse_connection := true ;
+ flow_connect_right_bottom (xto,yto,zto) (xfrom,yfrom,zfrom) ;
+enddef ;
+
+def flow_draw_test_shape(expr x, y) =
+ flow_draw_shape(x,y,fullcircle, .7, .7) ;
+enddef ;
+
+def flow_draw_test_shapes =
+ for i=1 upto flow_max_x :
+ for j=1 upto flow_max_y :
+ flow_draw_test_shape(i,j) ;
+ endfor ;
+ endfor ;
+enddef;
+
+def flow_draw_test_area =
+ pickup pencircle scaled .5flow_shape_line_width ;
+ draw (unitsquare xscaled flow_max_x yscaled flow_max_y shifted (1,1)) flow_scaled_to_grid withcolor blue ;
+enddef ;
+
+def flow_show_connection(expr n, m) =
+
+ flow_begin_chart(100+n,6,6) ;
+
+ flow_draw_test_area ;
+
+ flow_smooth := true ;
+ flow_arrowtip := true ;
+ flow_dashline := true ;
+
+ flow_draw_test_shape(2,2) ; flow_draw_test_shape(4,5) ;
+ flow_draw_test_shape(3,3) ; flow_draw_test_shape(5,1) ;
+ flow_draw_test_shape(2,5) ; flow_draw_test_shape(1,3) ;
+ flow_draw_test_shape(6,2) ; flow_draw_test_shape(4,6) ;
+
+ if (m=1) :
+ flow_connect_top_bottom (2,2,0) (4,5,0) ;
+ flow_connect_top_bottom (3,3,0) (5,1,0) ;
+ flow_connect_top_bottom (2,5,0) (1,3,0) ;
+ flow_connect_top_bottom (6,2,0) (4,6,0) ;
+ elseif (m=2) :
+ flow_connect_top_top (2,2,0) (4,5,0) ;
+ flow_connect_top_top (3,3,0) (5,1,0) ;
+ flow_connect_top_top (2,5,0) (1,3,0) ;
+ flow_connect_top_top (6,2,0) (4,6,0) ;
+ elseif (m=3) :
+ flow_connect_bottom_bottom (2,2,0) (4,5,0) ;
+ flow_connect_bottom_bottom (3,3,0) (5,1,0) ;
+ flow_connect_bottom_bottom (2,5,0) (1,3,0) ;
+ flow_connect_bottom_bottom (6,2,0) (4,6,0) ;
+ elseif (m=4) :
+ flow_connect_left_right (2,2,0) (4,5,0) ;
+ flow_connect_left_right (3,3,0) (5,1,0) ;
+ flow_connect_left_right (2,5,0) (1,3,0) ;
+ flow_connect_left_right (6,2,0) (4,6,0) ;
+ elseif (m=5) :
+ flow_connect_left_left (2,2,0) (4,5,0) ;
+ flow_connect_left_left (3,3,0) (5,1,0) ;
+ flow_connect_left_left (2,5,0) (1,3,0) ;
+ flow_connect_left_left (6,2,0) (4,6,0) ;
+ elseif (m=6) :
+ flow_connect_right_right (2,2,0) (4,5,0) ;
+ flow_connect_right_right (3,3,0) (5,1,0) ;
+ flow_connect_right_right (2,5,0) (1,3,0) ;
+ flow_connect_right_right (6,2,0) (4,6,0) ;
+ elseif (m=7) :
+ flow_connect_left_top (2,2,0) (4,5,0) ;
+ flow_connect_left_top (3,3,0) (5,1,0) ;
+ flow_connect_left_top (2,5,0) (1,3,0) ;
+ flow_connect_left_top (6,2,0) (4,6,0) ;
+ elseif (m=8) :
+ flow_connect_left_bottom (2,2,0) (4,5,0) ;
+ flow_connect_left_bottom (3,3,0) (5,1,0) ;
+ flow_connect_left_bottom (2,5,0) (1,3,0) ;
+ flow_connect_left_bottom (6,2,0) (4,6,0) ;
+ elseif (m=9) :
+ flow_connect_right_top (2,2,0) (4,5,0) ;
+ flow_connect_right_top (3,3,0) (5,1,0) ;
+ flow_connect_right_top (2,5,0) (1,3,0) ;
+ flow_connect_right_top (6,2,0) (4,6,0) ;
+ else :
+ flow_connect_right_bottom (2,2,0) (4,5,0) ;
+ flow_connect_right_bottom (3,3,0) (5,1,0) ;
+ flow_connect_right_bottom (2,5,0) (1,3,0) ;
+ flow_connect_right_bottom (6,2,0) (4,6,0) ;
+ fi ;
+
+ flow_end_chart ;
+
+enddef ;
+
+def flow_show_connections =
+ for f=1 upto 10 :
+ flow_show_connection(f,f) ;
+ endfor ;
+enddef ;
+
+%D charts
+
+def flow_clip_chart(expr minx, miny, maxx, maxy) =
+ flow_cmin_x := minx ;
+ flow_cmax_x := maxx ;
+ flow_cmin_y := miny ;
+ flow_cmax_y := maxy ;
+enddef ;
+
+def flow_begin_chart(expr n, maxx, maxy) =
+ flow_new_chart ;
+ flow_chart_figure := n ;
+ flow_chart_scale := 1 ;
+ if flow_chart_figure>0:
+ beginfig(flow_chart_figure) ;
+ fi ;
+ flow_initialize_grid (maxx, maxy) ;
+ bboxmargin := 0 ;
+ flow_cmin_x := 1 ;
+ flow_cmax_x := maxx ;
+ flow_cmin_y := 1 ;
+ flow_cmax_y := maxy ;
+enddef ;
+
+def flow_end_chart =
+ begingroup ;
+ save p ; path p ;
+ flow_flush_shapes ;
+ flow_flush_connections ;
+ flow_flush_pictures ;
+ flow_cmin_x := flow_cmin_x ;
+ flow_cmax_x := flow_cmin_x+flow_cmax_x ;
+ flow_cmin_y := flow_cmin_y-1 ;
+ flow_cmax_y := flow_cmin_y+flow_cmax_y ;
+ if flow_reverse_y :
+ flow_cmin_y := flow_y_pos(flow_cmin_y) ;
+ flow_cmax_y := flow_y_pos(flow_cmax_y) ;
+ fi ;
+ p := (((flow_cmin_x,flow_cmin_y)--(flow_cmax_x,flow_cmin_y)--
+ (flow_cmax_x,flow_cmax_y)--(flow_cmin_x,flow_cmax_y)--cycle))
+ flow_scaled_to_grid ;
+ %draw p withcolor red ;
+ p := p enlarged flow_chart_offset ;
+ clip currentpicture to p ;
+ setbounds currentpicture to p ;
+ endgroup ;
+ currentpicture := currentpicture scaled flow_chart_scale ;
+ if flow_chart_figure>0:
+ endfig ;
+ fi ;
+enddef ;
+
+def flow_new_shape(expr x, y, n) =
+ if known n :
+ if (x>0) and (x<=flow_max_x) and (y>0) and (y<=flow_max_y) :
+ flow_draw_shape(x,y,some_shape_path(n), flow_shape_width/flow_grid_width, flow_shape_height/flow_grid_height) ;
+ else :
+ message ("shape outside grid ignored") ;
+ fi ;
+ else :
+ message ("shape not known" ) ;
+ fi ;
+enddef ;
+
+def flow_begin_sub_chart =
+ begingroup ;
+ save flow_shape_line_width, flow_connection_line_width ;
+ save flow_shape_line_color, flow_shape_fill_color, flow_connection_line_color ;
+ color flow_shape_line_color, flow_shape_fill_color, flow_connection_line_color ;
+ save flow_smooth, flow_arrowtip, flow_dashline, flow_peepshape ;
+ boolean flow_smooth, flow_arrowtip, flow_dashline, flow_peepshape ;
+enddef ;
+
+def flow_end_sub_chart =
+ endgroup ;
+enddef ;
+
diff --git a/metapost/context/base/mp-chem.mpiv b/metapost/context/base/mp-chem.mpiv
index c70dafd85..0432a7e88 100644
--- a/metapost/context/base/mp-chem.mpiv
+++ b/metapost/context/base/mp-chem.mpiv
@@ -15,7 +15,9 @@
% either consistent setting or not
-if known chem_reset : endinput ; fi ;
+if known context_chem : endinput ; fi ;
+
+boolean context_chem ; context_chem := true ;
numeric
chem_width, chem_radical_min, chem_radical_max, chem_text_max, chem_circle_radius,
@@ -140,16 +142,15 @@ def chem_stop_structure =
setbounds currentpicture to chem_setting_bbox ;
enddef ;
-def chem_start_component =
-enddef ;
-def chem_stop_component =
-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 ;
@@ -176,38 +177,49 @@ 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) ;
@@ -217,20 +229,25 @@ vardef chem_db (expr 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) ;
@@ -238,27 +255,35 @@ vardef chem_r (expr n, f, t, r, c) =
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)
@@ -266,6 +291,7 @@ vardef chem_mr (expr n, f, t, r, c) =
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)
@@ -273,75 +299,95 @@ vardef chem_pr (expr n, f, t, r, c) =
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) ;
@@ -350,14 +396,17 @@ vardef chem_bb (expr n, f, t, r, c) = % one
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 ;
@@ -365,9 +414,11 @@ 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)) ;
@@ -375,6 +426,7 @@ vardef chem_z@#(expr n, p) (text t) =
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))) ;
@@ -382,9 +434,11 @@ vardef chem_cz@#(expr n, p) (text t) =
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
@@ -393,9 +447,11 @@ vardef chem_rz@#(expr n, p) (text t) =
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
@@ -404,6 +460,7 @@ vardef chem_mrz@#(expr n, p) (text t) =
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
@@ -412,15 +469,19 @@ vardef chem_prz@#(expr n, p) (text t) =
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))) ;
@@ -428,6 +489,7 @@ vardef chem_zt@#(expr n, p) (text t) =
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))) ;
@@ -435,15 +497,19 @@ vardef chem_zn@#(expr n, p) (text t) =
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 ;
@@ -481,15 +547,19 @@ 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))) ;
@@ -497,6 +567,7 @@ vardef chem_dir (expr n, d) =
chem_shift := chem_shift + chem_direction_p ;
fi ;
enddef ;
+
vardef chem_mov (expr n, d) =
if d = 0 :
currentpicture := currentpicture shifted - chem_shift ;
@@ -507,6 +578,7 @@ vardef chem_mov (expr n, d) =
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) ;
@@ -554,6 +626,7 @@ vardef chem_draw (expr n, path_fragment, from_point, to_point, linewidth, lineco
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 ;
@@ -565,24 +638,29 @@ vardef chem_dashed_normal (expr n, path_fragment, from_point, to_point, linewidt
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:
@@ -603,6 +681,7 @@ vardef chem_save =
% chem_rotation := 1 ;
currentpicture := nullpicture ;
enddef ;
+
vardef chem_restore =
if chem_stack_n > 0 :
currentpicture := currentpicture shifted - chem_shift ;
diff --git a/metapost/context/base/mp-core.mpii b/metapost/context/base/mp-core.mpii
index 2ccdad22c..4d28cfd17 100644
--- a/metapost/context/base/mp-core.mpii
+++ b/metapost/context/base/mp-core.mpii
@@ -1,6 +1,4 @@
-
-if unknown context_tool : input mp-tool ; fi ;
-if known context_core : endinput ; fi ;
+if known context_core : endinput ; fi ;
boolean context_core ; context_core := true ;
diff --git a/metapost/context/base/mp-core.mpiv b/metapost/context/base/mp-core.mpiv
index 8fc32c420..1297802e9 100644
--- a/metapost/context/base/mp-core.mpiv
+++ b/metapost/context/base/mp-core.mpiv
@@ -1,5 +1,17 @@
-if unknown context_tool : input mp-tool ; fi ;
-if known context_core : endinput ; fi ;
+%D \module
+%D [ file=mp-core.mp,
+%D version=1999.08.01, % anchoring
+%D title=\CONTEXT\ \METAPOST\ graphics,
+%D subtitle=background macros,
+%D author=Hans Hagen,
+%D date=\currentdate,
+%D copyright={PRAGMA / 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.
+
+if known context_core : endinput ; fi ;
boolean context_core ; context_core := true ;
@@ -45,19 +57,14 @@ def freeze_box (expr pos) =
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) =
@@ -125,182 +132,187 @@ 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 ;
+ 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 :
- % 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 ;
+ % just one page
+ boxgriddirection := up ;
fi ;
- else :
- % just one page
- boxgriddirection := up ;
- fi ;
- path txy, bxy, pxy, mxy ;
+ path txy, bxy, pxy, mxy ;
- txy := originpath ; % top
- bxy := originpath ; % bottom
- pxy := originpath ; % composed
+ txy := originpath ; % top
+ bxy := originpath ; % bottom
+ pxy := originpath ; % composed
- boolean lefthang, righthang, somehang ;
+ boolean lefthang, righthang, somehang ;
- % we only hang on the first of a multiple page background
+ % 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 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 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]) :
+ 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.
+ % 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]) ;
+ llxy[fpos] := (xpart llxy[fpos], ypart llxy[tpos]) ;
+ ulxy[fpos] := (xpart ulxy[fpos], ypart ulxy[tpos]) ;
- else :
+ else :
- % We have a multi-liner. For convenience we now correct the
- % begin and end points for indentation.
+ % 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 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 ;
+ 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 ;
+ fi ;
- somehang := (ypart ulxy[fpos]>ypart llcorner mxy) and
- (ypart llxy[tpos]<ypart llcorner mxy) ;
+ somehang := (ypart ulxy[fpos]>ypart llcorner mxy) and
+ (ypart llxy[tpos]<ypart llcorner mxy) ;
- if round(ypart llxy[fpos]) = round(ypart llxy[tpos]) :
+ if round(ypart llxy[fpos]) = round(ypart llxy[tpos]) :
- % A (short) one-liner goes into the top box.
+ % A (short) one-liner goes into the top box.
- txy := llxy[fpos] -- lrxy[tpos] -- urxy[tpos] -- ulxy[fpos] -- cycle ;
+ 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])) :
+ 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.
+ % 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 ;
+ 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])) :
+ elseif (round(ypart llxy[fpos]) = round(ypart ulxy[tpos])) :
- % We have a sentence that spans two lines but with overlap.
+ % 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 ;
+ pxy :=
+ llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- lrxy[fpos] --
+ urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- ulxy[tpos] -- cycle ;
- elseif lefthang and somehang :
+ elseif lefthang and somehang :
- % We have a sentence that spans more than two lines with
- % left hanging indentation.
+ % 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 ;
+ 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 :
+ elseif righthang and somehang :
- % We have a sentence that spans more than two lines with
- % right hanging indentation.
+ % 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 ;
+ 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 :
+ else :
- % We have a sentence that spans more than two lines with
- % no hanging indentation.
+ % 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 ;
+ 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 ;
+ fi ;
- pxy := simplified pxy ;
- pxy := unspiked pxy ;
+ pxy := simplified pxy ;
+ pxy := unspiked pxy ;
enddef ;
@@ -310,10 +322,10 @@ 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 ;
+ 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 ;
@@ -327,8 +339,7 @@ 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)))
+ (round (ypart ulcorner multipars[i]) = round (ypart ulcorner (TextAreas[multirefs[i]] shifted last_multi_par_shift)))
enddef ;
numeric nofmultipars ; nofmultipars := 0 ;
@@ -345,16 +356,16 @@ boolean check_multi_par_chain ; check_multi_par_chain := true ; % extra page
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 ;
+ 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) ;
+ 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,
@@ -363,597 +374,576 @@ def prepare_multi_pars (expr fn,fx,fy,fw,fh,fd,
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 ;
- elseif ignore_multi_par_page :
- RealPageNumber := fn ;
- nxy[fpos] := nxy[tpos] := nxy[wpos] := nxy[ppos] := RealPageNumber ;
- fi ;
-
- numeric par_strut_height, par_strut_depth, par_line_height ;
-
- set_par_line_height (ph, pd) ;
-
- numeric par_hang_indent, par_hang_after, par_indent, par_left_skip, par_right_skip ;
-
- par_hang_indent := rh ;
- par_hang_after := ra ;
- par_indent := ri ;
- par_left_skip := rl ;
- par_right_skip := rr ;
-
- pair par_start_pos ;
- pair par_stop_pos ;
-
- par_start_pos := llxy[fpos]
- if par_indent <0: shifted (-par_indent, 0) fi
- if par_left_skip<0: shifted (-par_left_skip,0) fi ;
- par_stop_pos := lrxy[tpos]
- if par_right_skip<0: shifted (par_right_skip,0) fi ; % nasty as the endpos can be shifted by rightskip
-
- if wxy[wpos]>0 :
- left_skip := rl + xpart llxy[wpos] - xpart llxy[ppos] ;
- right_skip := rw - left_skip - ww ;
- else :
- left_skip := rl ;
- right_skip := rr ;
- fi ;
-
- path multipar, multipars[] ;
- numeric multiref, multirefs[] ;
- numeric multiloc, multilocs[] ; % 1=begin 2=between 3=end
-
- numeric multi_par_pages ; multi_par_pages := nxy[tpos]-nxy[fpos]+1 ;
-
- % locals .. why can't i move these outside?
-
-vardef _pmp_set_multipar_ (expr i) =
- ( (TextAreas[i] leftenlarged -left_skip) rightenlarged (-right_skip
- if auto_multi_par_hsize : + rw - bbwidth(TextAreas[i]) fi) )
-enddef ;
+ 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 ;
-vardef _pmp_snapped_multi_pos_ (expr p) =
- if snap_multi_par_tops :
- if abs(ypart p - ypart ulcorner multipar) < par_line_height :
- (xpart p,ypart ulcorner multipar)
- else :
- p
- fi
- else :
- p
- fi
-enddef ;
+ last_multi_par_shift := origin ;
-vardef _pmp_estimated_par_lines_ (expr h) =
- round(h/par_line_height)
-enddef ;
+ 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) ;
-vardef _pmp_top_multi_par_(expr p) =
- (round(_pmp_estimated_par_lines_(bbheight(p)*par_line_height))=round(bbheight(p)))
-enddef ;
+ if local_multi_par_area :
+ RealPageNumber := fn ;
+ NOfTextAreas := 1 ;
+ NOfSavedTextAreas := 0 ;
+ TextAreas[1] := TextAreas[0] ;
+ TextColumns[1] := TextColumns[0] ;
+ nxy[fpos] := nxy[tpos] := nxy[wpos] := nxy[ppos] := RealPageNumber ;
+ elseif ignore_multi_par_page :
+ RealPageNumber := fn ;
+ nxy[fpos] := nxy[tpos] := nxy[wpos] := nxy[ppos] := RealPageNumber ;
+ fi ;
-vardef _pmp_multi_par_tsc_(expr p) =
- if _pmp_top_multi_par_(p) : TopSkipCorrection else : 0 fi
-enddef ;
+ numeric par_strut_height, par_strut_depth, par_line_height ;
-vardef _pmp_estimated_multi_par_height_ (expr n, t) =
- if round(par_line_height)=0 :
- 0
- else :
- save ok, h ; boolean ok ;
- numeric h ; h := 0 ;
- ok := false ;
- if (nxy[fpos]=RealPageNumber-1) :
- for i := 1 upto NOfSavedTextAreas :
- if (InsideSavedTextArea(i,par_start_pos)) :
- ok := true ;
- h := h + _pmp_estimated_par_lines_(ypart ulxy[fpos] -
- ypart llcorner SavedTextAreas[i]) ;
- elseif ok :
- h := h + _pmp_estimated_par_lines_(bbheight(SavedTextAreas[i])) ;
- fi ;
- endfor ;
- fi ;
- if ok :
- for i := 1 upto n-1 :
- h := h + _pmp_estimated_par_lines_(bbheight(TextAreas[i])) ;
- endfor ;
- else :
- % already: ok := false ;
- for i := 1 upto n-1 :
- if (InsideTextArea(i,par_start_pos)) :
- ok := true ;
- h := h + _pmp_estimated_par_lines_(ypart ulxy[fpos] - ypart llcorner TextAreas[i]) ;
- elseif ok :
- h := h + _pmp_estimated_par_lines_(bbheight(TextAreas[i])) ;
- fi ;
- endfor ;
- fi ;
- h
- fi
-enddef ;
+ set_par_line_height (ph, pd) ;
-vardef _pmp_left_top_hang_ (expr same_area) =
+ numeric par_hang_indent, par_hang_after, par_indent, par_left_skip, par_right_skip ;
- par_hang_after := ra + _pmp_estimated_par_lines_(py-fy) ;
+ par_hang_indent := rh ;
+ par_hang_after := ra ;
+ par_indent := ri ;
+ par_left_skip := rl ;
+ par_right_skip := rr ;
- if (par_hang_indent>0) and (par_hang_after<0) and obey_multi_par_hang :
- pair _ul_ ; _ul_ := (xpart ulcorner multipar, ypart _pmp_snapped_multi_pos_(ulxy[fpos]));
- pair _pa_ ; _pa_ := _ul_ shifted (0,par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart llcorner multipar)) ;
- if same_area :
- _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart llxy[tpos])) ;
- fi ;
- if obey_multi_par_more and (round(par_line_height)>0) :
- par_hang_after := min(0,round(par_hang_after +
- (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ;
- fi ;
- (xpart _ul_ + par_hang_indent, ypart lrxy[fpos]) --
- (xpart _ul_ + par_hang_indent, ypart _pa_) --
- (xpart ulcorner multipar, ypart _pa_)
- else :
- (xpart ulcorner multipar, ypart lrxy[fpos])
- fi
-enddef ;
+ pair par_start_pos ;
+ pair par_stop_pos ;
-vardef _pmp_right_top_hang_ (expr same_area) =
+ par_start_pos := llxy[fpos]
+ if par_indent <0: shifted (-par_indent, 0) fi
+ if par_left_skip<0: shifted (-par_left_skip,0) fi ;
- par_hang_after := ra + _pmp_estimated_par_lines_(py-fy) ;
+ par_stop_pos := lrxy[tpos]
+ if par_right_skip<0: shifted (par_right_skip,0) fi ; % nasty as the endpos can be shifted by rightskip
- if (par_hang_indent<0) and (par_hang_after<0) and obey_multi_par_hang :
- pair _ur_ ; _ur_ := (xpart urcorner multipar, ypart _pmp_snapped_multi_pos_(urxy[fpos])) ;
- pair _pa_ ; _pa_ := _ur_ shifted (0,par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart llcorner multipar)) ;
- if same_area :
- _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart _pmp_snapped_multi_pos_(ulxy[tpos]))) ;
- fi ;
- if obey_multi_par_more and (round(par_line_height)>0) :
- par_hang_after := min(0,round(par_hang_after +
- (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ;
+ 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 ;
- (xpart urcorner multipar, ypart _pa_) --
- (xpart _ur_ + par_hang_indent, ypart _pa_) --
- (xpart _ur_ + par_hang_indent, ypart _pmp_snapped_multi_pos_(urxy[fpos]))
- else :
- (xpart urcorner multipar, ypart _pmp_snapped_multi_pos_(urxy[fpos]))
- fi
-enddef ;
-vardef _pmp_x_left_top_hang_ (expr i, t) =
- par_hang_after := min(0,ra + _pmp_estimated_multi_par_height_(i,t)) ;
- if (par_hang_indent>0) and (par_hang_after<0) :
- pair _ul_ ; _ul_ := ulcorner multipar ;
- pair _pa_ ; _pa_ := _ul_ shifted (0,par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ;
- if t :
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart llxy[tpos]));
- fi ;
- if abs(ypart _pa_-ypart llxy[tpos])<par_line_height :
- _pa_ := (xpart _pa_,ypart llxy[tpos]);
- fi ;
- if abs(ypart _pa_-ypart llcorner multipar)<par_line_height :
- _pa_ := (xpart _pa_,ypart llcorner multipar);
- fi ;
- (xpart _ul_, ypart _pa_) --
- (xpart _ul_ + par_hang_indent, ypart _pa_) --
- (xpart _ul_ + par_hang_indent, ypart _ul_)
- else :
- ulcorner multipar
- fi
-enddef ;
+ path multipar, multipars[] ;
+ numeric multiref, multirefs[] ;
+ numeric multiloc, multilocs[] ; % 1=begin 2=between 3=end
-vardef _pmp_x_right_top_hang_ (expr i, t) =
- par_hang_after := min(0,ra + _pmp_estimated_multi_par_height_(i,t)) ;
- if (par_hang_indent<0) and (par_hang_after<0) :
- pair _ur_ ; _ur_ := urcorner multipar ;
- pair _pa_ ; _pa_ := _ur_ shifted (0,par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart lrcorner multipar)) ;
- if t :
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart _pmp_snapped_multi_pos_(urxy[tpos]))) ;
- fi ;
- (xpart _ur_ + par_hang_indent, ypart _ur_) --
- (xpart _ur_ + par_hang_indent, ypart _pa_) --
- (xpart _ur_, ypart _pa_)
- else :
- urcorner multipar
- fi
-enddef ;
+ numeric multi_par_pages ; multi_par_pages := nxy[tpos]-nxy[fpos]+1 ;
-vardef _pmp_left_bottom_hang_ (expr same_area) =
- pair _ll_, _sa_, _pa_ ;
- _sa_ := if same_area : llxy[tpos] else : lrcorner multipar fi ;
- if (par_hang_indent>0) and (par_hang_after>0) and obey_multi_par_hang :
- _ll_ := (xpart ulcorner multipar, ypart _pmp_snapped_multi_pos_(ulxy[fpos])) ;
- _pa_ := _ll_ shifted (0,-par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ;
- if same_area :
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart _sa_)) ;
- fi ;
- if obey_multi_par_more and (round(par_line_height)>0) :
- par_hang_after := max(0,round(par_hang_after -
- (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ;
- fi ;
- _pa_ --
- (xpart _pa_ + par_hang_indent,ypart _pa_) --
- (xpart _pa_ + par_hang_indent,ypart _sa_)
- else :
- (xpart llcorner multipar, ypart _sa_)
- fi
-enddef ;
+ % locals .. why can't i move these outside?
-vardef _pmp_right_bottom_hang_ (expr same_area) =
- pair _lr_, _sa_, _pa_ ;
- _sa_ := if same_area : _pmp_snapped_multi_pos_(ulxy[tpos]) else : lrcorner multipar fi ;
- if (par_hang_indent<0) and (par_hang_after>0) and obey_multi_par_hang :
- _lr_ := (xpart urcorner multipar, ypart _pmp_snapped_multi_pos_(urxy[fpos])) ;
- _pa_ := _lr_ shifted (0,-par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart lrcorner multipar)) ;
- if same_area :
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart _pmp_snapped_multi_pos_(ulxy[tpos]))) ;
- fi ;
- if obey_multi_par_more and (round(par_line_height)>0) :
- par_hang_after := max(0,round(par_hang_after -
- (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ;
- fi ;
- (xpart _pa_ + par_hang_indent,ypart _sa_) --
- (xpart _pa_ + par_hang_indent,ypart _pa_) --
- _pa_
- else :
- (xpart lrcorner multipar, ypart _sa_)
- fi
-enddef ;
+ vardef _pmp_set_multipar_ (expr i) =
+ ( (TextAreas[i] leftenlarged -left_skip) rightenlarged (-right_skip
+ if auto_multi_par_hsize : + rw - bbwidth(TextAreas[i]) fi) )
+ enddef ;
-vardef _pmp_x_left_bottom_hang_ (expr i, t) =
- pair _ll_, _sa_, _pa_ ;
- _sa_ := if t : llxy[tpos] else : llcorner multipar fi ;
- if (par_hang_indent>0) and (ra>0) :
- par_hang_after := max(0,ra - _pmp_estimated_multi_par_height_(i,t)) ;
- _ll_ := ulcorner multipar ;
- _pa_ := _ll_ shifted (0,-par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart _sa_)) ;
- % we need to compensate for topskip enlarged areas
- if abs(ypart _pa_ - ypart _sa_) > par_line_height :
- (xpart _pa_ + par_hang_indent,ypart _sa_) --
- (xpart _pa_ + par_hang_indent,ypart _pa_) --
- fi
- _pa_
- else :
- (xpart llcorner multipar, ypart _sa_)
- fi
-enddef ;
+ vardef _pmp_snapped_multi_pos_ (expr p) =
+ if snap_multi_par_tops :
+ if abs(ypart p - ypart ulcorner multipar) < par_line_height :
+ (xpart p,ypart ulcorner multipar)
+ else :
+ p
+ fi
+ else :
+ p
+ fi
+ enddef ;
-vardef _pmp_x_right_bottom_hang_ (expr i, t) =
- pair _lr_, _sa_, _pa_ ;
- _sa_ := if t : _pmp_snapped_multi_pos_(ulxy[tpos]) else : llcorner multipar fi ;
- if (par_hang_indent<0) and (ra>0) :
- par_hang_after := max(0,ra - _pmp_estimated_multi_par_height_(i, t)) ;
- _lr_ := urcorner multipar ;
- _pa_ := _lr_ shifted (0,-par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart lrcorner multipar)) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart _sa_)) ;
- % we need to compensate for topskip enlarged areas
- _pa_
- if abs(ypart _pa_ - ypart _sa_) > par_line_height :
- -- (xpart _pa_ + par_hang_indent,ypart _pa_)
- -- (xpart _pa_ + par_hang_indent,ypart _sa_)
- fi
- else :
- (xpart lrcorner multipar, ypart _sa_)
- fi
-enddef ;
+ vardef _pmp_estimated_par_lines_ (expr h) =
+ round(h/par_line_height)
+ enddef ;
-% def _pmp_test_multipar_ =
-% multipar := boundingbox multipar ;
-% enddef ;
+ vardef _pmp_top_multi_par_(expr p) =
+ (round(_pmp_estimated_par_lines_(bbheight(p)*par_line_height))=round(bbheight(p)))
+ enddef ;
- % first loop
+ vardef _pmp_multi_par_tsc_(expr p) =
+ if _pmp_top_multi_par_(p) : TopSkipCorrection else : 0 fi
+ enddef ;
- ii := 0 ; nn := NOfTextAreas+1 ; nofmultipars := 0 ;
+ vardef _pmp_estimated_multi_par_height_ (expr n, t) =
+ if round(par_line_height)=0 :
+ 0
+ else :
+ save ok, h ; boolean ok ;
+ numeric h ; h := 0 ;
+ ok := false ;
+ if (nxy[fpos]=RealPageNumber-1) :
+ for i := 1 upto NOfSavedTextAreas :
+ if (InsideSavedTextArea(i,par_start_pos)) :
+ ok := true ;
+ h := h + _pmp_estimated_par_lines_(ypart ulxy[fpos] - ypart llcorner SavedTextAreas[i]) ;
+ elseif ok :
+ h := h + _pmp_estimated_par_lines_(bbheight(SavedTextAreas[i])) ;
+ fi ;
+ endfor ;
+ fi ;
+ if ok :
+ for i := 1 upto n-1 :
+ h := h + _pmp_estimated_par_lines_(bbheight(TextAreas[i])) ;
+ endfor ;
+ else :
+ % already: ok := false ;
+ for i := 1 upto n-1 :
+ if (InsideTextArea(i,par_start_pos)) :
+ ok := true ;
+ h := h + _pmp_estimated_par_lines_(ypart ulxy[fpos] - ypart llcorner TextAreas[i]) ;
+ elseif ok :
+ h := h + _pmp_estimated_par_lines_(bbheight(TextAreas[i])) ;
+ fi ;
+ endfor ;
+ fi ;
+ h
+ fi
+ enddef ;
- if enable_multi_par_fallback and
- (nxy[fpos]=RealPageNumber) and
- (nxy[tpos]=RealPageNumber) and not
- (InsideSomeTextArea(lxy[fpos]) and
- InsideSomeTextArea(rxy[tpos])) :
+ vardef _pmp_left_top_hang_ (expr same_area) =
- % fallback
+ par_hang_after := ra + _pmp_estimated_par_lines_(py-fy) ;
- % multipar :=
- % llxy[fpos] --
- % lrxy[tpos] --
- % urxy[tpos] --
- % ulxy[fpos] -- cycle ;
- %
- % save_multipar (1,1,multipar) ;
+ if (par_hang_indent>0) and (par_hang_after<0) and obey_multi_par_hang :
+ pair _ul_ ; _ul_ := (xpart ulcorner multipar, ypart _pmp_snapped_multi_pos_(ulxy[fpos]));
+ pair _pa_ ; _pa_ := _ul_ shifted (0,par_hang_after*par_line_height) ;
+ _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart llcorner multipar)) ;
+ if same_area :
+ _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart llxy[tpos])) ;
+ fi ;
+ if obey_multi_par_more and (round(par_line_height)>0) :
+ par_hang_after := min(0,round(par_hang_after + (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ;
+ fi ;
+ (xpart _ul_ + par_hang_indent, ypart lrxy[fpos]) --
+ (xpart _ul_ + par_hang_indent, ypart _pa_) --
+ (xpart ulcorner multipar, ypart _pa_)
+ else :
+ (xpart ulcorner multipar, ypart lrxy[fpos])
+ fi
+ enddef ;
- % we need to take the boundingbox because there can be
- % more lines and we want a proper rectange
+ vardef _pmp_right_top_hang_ (expr same_area) =
- multipar :=
- ulxy[fpos] --
- urxy[tpos] --
- lrxy[fpos] --
- llxy[tpos] -- cycle ;
+ par_hang_after := ra + _pmp_estimated_par_lines_(py-fy) ;
- save_multipar (1,1,boundingbox(multipar)) ;
+ if (par_hang_indent<0) and (par_hang_after<0) and obey_multi_par_hang :
+ pair _ur_ ; _ur_ := (xpart urcorner multipar, ypart _pmp_snapped_multi_pos_(urxy[fpos])) ;
+ pair _pa_ ; _pa_ := _ur_ shifted (0,par_hang_after*par_line_height) ;
+ _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart llcorner multipar)) ;
+ if same_area :
+ _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart _pmp_snapped_multi_pos_(ulxy[tpos]))) ;
+ fi ;
+ if obey_multi_par_more and (round(par_line_height)>0) :
+ par_hang_after := min(0,round(par_hang_after + (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ;
+ fi ;
+ (xpart urcorner multipar, ypart _pa_) --
+ (xpart _ur_ + par_hang_indent, ypart _pa_) --
+ (xpart _ur_ + par_hang_indent, ypart _pmp_snapped_multi_pos_(urxy[fpos]))
+ else :
+ (xpart urcorner multipar, ypart _pmp_snapped_multi_pos_(urxy[fpos]))
+ fi
+ enddef ;
- else :
+ vardef _pmp_x_left_top_hang_ (expr i, t) =
+ par_hang_after := min(0,ra + _pmp_estimated_multi_par_height_(i,t)) ;
+ if (par_hang_indent>0) and (par_hang_after<0) :
+ pair _ul_ ; _ul_ := ulcorner multipar ;
+ pair _pa_ ; _pa_ := _ul_ shifted (0,par_hang_after*par_line_height) ;
+ _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ;
+ if t :
+ _pa_ := (xpart _pa_,max(ypart _pa_,ypart llxy[tpos]));
+ fi ;
+ if abs(ypart _pa_-ypart llxy[tpos])<par_line_height :
+ _pa_ := (xpart _pa_,ypart llxy[tpos]);
+ fi ;
+ if abs(ypart _pa_-ypart llcorner multipar)<par_line_height :
+ _pa_ := (xpart _pa_,ypart llcorner multipar);
+ fi ;
+ (xpart _ul_, ypart _pa_) --
+ (xpart _ul_ + par_hang_indent, ypart _pa_) --
+ (xpart _ul_ + par_hang_indent, ypart _ul_)
+ else :
+ ulcorner multipar
+ fi
+ enddef ;
- % normal
+ vardef _pmp_x_right_top_hang_ (expr i, t) =
+ par_hang_after := min(0,ra + _pmp_estimated_multi_par_height_(i,t)) ;
+ if (par_hang_indent<0) and (par_hang_after<0) :
+ pair _ur_ ; _ur_ := urcorner multipar ;
+ pair _pa_ ; _pa_ := _ur_ shifted (0,par_hang_after*par_line_height) ;
+ _pa_ := (xpart _pa_,max(ypart _pa_,ypart lrcorner multipar)) ;
+ if t :
+ _pa_ := (xpart _pa_,max(ypart _pa_,ypart _pmp_snapped_multi_pos_(urxy[tpos]))) ;
+ fi ;
+ (xpart _ur_ + par_hang_indent, ypart _ur_) --
+ (xpart _ur_ + par_hang_indent, ypart _pa_) --
+ (xpart _ur_, ypart _pa_)
+ else :
+ urcorner multipar
+ fi
+ enddef ;
- for i=1 upto NOfTextAreas :
+ vardef _pmp_left_bottom_hang_ (expr same_area) =
+ pair _ll_, _sa_, _pa_ ;
+ _sa_ := if same_area : llxy[tpos] else : lrcorner multipar fi ;
+ if (par_hang_indent>0) and (par_hang_after>0) and obey_multi_par_hang :
+ _ll_ := (xpart ulcorner multipar, ypart _pmp_snapped_multi_pos_(ulxy[fpos])) ;
+ _pa_ := _ll_ shifted (0,-par_hang_after*par_line_height) ;
+ _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ;
+ if same_area :
+ _pa_ := (xpart _pa_,max(ypart _pa_,ypart _sa_)) ;
+ fi ;
+ if obey_multi_par_more and (round(par_line_height)>0) :
+ par_hang_after := max(0,round(par_hang_after - (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ;
+ fi ;
+ _pa_ --
+ (xpart _pa_ + par_hang_indent,ypart _pa_) --
+ (xpart _pa_ + par_hang_indent,ypart _sa_)
+ else :
+ (xpart llcorner multipar, ypart _sa_)
+ fi
+ enddef ;
- TopSkipCorrection := 0 ;
+ vardef _pmp_right_bottom_hang_ (expr same_area) =
+ pair _lr_, _sa_, _pa_ ;
+ _sa_ := if same_area : _pmp_snapped_multi_pos_(ulxy[tpos]) else : lrcorner multipar fi ;
+ if (par_hang_indent<0) and (par_hang_after>0) and obey_multi_par_hang :
+ _lr_ := (xpart urcorner multipar, ypart _pmp_snapped_multi_pos_(urxy[fpos])) ;
+ _pa_ := _lr_ shifted (0,-par_hang_after*par_line_height) ;
+ _pa_ := (xpart _pa_,max(ypart _pa_,ypart lrcorner multipar)) ;
+ if same_area :
+ _pa_ := (xpart _pa_,max(ypart _pa_,ypart _pmp_snapped_multi_pos_(ulxy[tpos]))) ;
+ fi ;
+ if obey_multi_par_more and (round(par_line_height)>0) :
+ par_hang_after := max(0,round(par_hang_after - (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ;
+ fi ;
+ (xpart _pa_ + par_hang_indent,ypart _sa_) --
+ (xpart _pa_ + par_hang_indent,ypart _pa_) --
+ _pa_
+ else :
+ (xpart lrcorner multipar, ypart _sa_)
+ fi
+ enddef ;
+
+ vardef _pmp_x_left_bottom_hang_ (expr i, t) =
+ pair _ll_, _sa_, _pa_ ;
+ _sa_ := if t : llxy[tpos] else : llcorner multipar fi ;
+ if (par_hang_indent>0) and (ra>0) :
+ par_hang_after := max(0,ra - _pmp_estimated_multi_par_height_(i,t)) ;
+ _ll_ := ulcorner multipar ;
+ _pa_ := _ll_ shifted (0,-par_hang_after*par_line_height) ;
+ _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ;
+ _pa_ := (xpart _pa_,max(ypart _pa_,ypart _sa_)) ;
+ % we need to compensate for topskip enlarged areas
+ if abs(ypart _pa_ - ypart _sa_) > par_line_height :
+ (xpart _pa_ + par_hang_indent,ypart _sa_) --
+ (xpart _pa_ + par_hang_indent,ypart _pa_) --
+ fi
+ _pa_
+ else :
+ (xpart llcorner multipar, ypart _sa_)
+ fi
+ enddef ;
+
+ vardef _pmp_x_right_bottom_hang_ (expr i, t) =
+ pair _lr_, _sa_, _pa_ ;
+ _sa_ := if t : _pmp_snapped_multi_pos_(ulxy[tpos]) else : llcorner multipar fi ;
+ if (par_hang_indent<0) and (ra>0) :
+ par_hang_after := max(0,ra - _pmp_estimated_multi_par_height_(i, t)) ;
+ _lr_ := urcorner multipar ;
+ _pa_ := _lr_ shifted (0,-par_hang_after*par_line_height) ;
+ _pa_ := (xpart _pa_,max(ypart _pa_,ypart lrcorner multipar)) ;
+ _pa_ := (xpart _pa_,max(ypart _pa_,ypart _sa_)) ;
+ % we need to compensate for topskip enlarged areas
+ _pa_
+ if abs(ypart _pa_ - ypart _sa_) > par_line_height :
+ -- (xpart _pa_ + par_hang_indent,ypart _pa_)
+ -- (xpart _pa_ + par_hang_indent,ypart _sa_)
+ fi
+ else :
+ (xpart lrcorner multipar, ypart _sa_)
+ fi
+ enddef ;
- multipar := _pmp_set_multipar_(i) ;
+ % def _pmp_test_multipar_ =
+ % multipar := boundingbox multipar ;
+ % enddef ;
- % watch how we compensate for negative indentation
+ % first loop
- if (nxy[fpos]=RealPageNumber) and (InsideTextArea(i,par_start_pos)) :
+ ii := 0 ; nn := NOfTextAreas+1 ; nofmultipars := 0 ;
- % first one in chain
+ if enable_multi_par_fallback and (nxy[fpos]=RealPageNumber)
+ and (nxy[tpos]=RealPageNumber) and not (InsideSomeTextArea(lxy[fpos]) and InsideSomeTextArea(rxy[tpos])) :
- ii := i ;
+ % fallback
-% if (nxy[tpos]=RealPageNumber) and (InsideTextArea(i,llxy[tpos])) :
- if (nxy[tpos]=RealPageNumber) and (InsideTextArea(i,par_stop_pos)) :
+ % multipar :=
+ % llxy[fpos] --
+ % lrxy[tpos] --
+ % urxy[tpos] --
+ % ulxy[fpos] -- cycle ;
+ %
+ % save_multipar (1,1,multipar) ;
- % in same area
+ % we need to take the boundingbox because there can be
+ % more lines and we want a proper rectange
- nn := i ;
+ multipar :=
+ ulxy[fpos] --
+ urxy[tpos] --
+ lrxy[fpos] --
+ llxy[tpos] -- cycle ;
- if compensate_multi_par_topskip and (round(LineHeight-ph-pd)=0) :
+ save_multipar (1,1,boundingbox(multipar)) ;
- TopSkipCorrection := TopSkip - StrutHeight ;
+ else :
+
+ % normal
+
+ for i=1 upto NOfTextAreas :
- 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 ;
+ multipar := _pmp_set_multipar_(i) ;
- if ypart llxy[fpos] = ypart llxy[tpos] :
+ % watch how we compensate for negative indentation
- multipar :=
- llxy[fpos] --
- lrxy[tpos] --
- %urxy[tpos] --
- _pmp_snapped_multi_pos_(urxy[tpos]) --
- %ulxy[fpos] --
- _pmp_snapped_multi_pos_(ulxy[fpos]) --
- cycle ;
+ if (nxy[fpos]=RealPageNumber) and (InsideTextArea(i,par_start_pos)) :
- save_multipar (i,1,multipar) ;
+ % first one in chain
- elseif (ypart llxy[fpos] = ypart ulxy[tpos]) and
- (xpart llxy[tpos] < xpart llxy[fpos]) :
+ ii := i ;
- % two loners
+ if (nxy[tpos]=RealPageNumber) and (InsideTextArea(i,par_stop_pos)) :
- multipar := if obey_multi_par_hang :
+ % in same area
- _pmp_right_bottom_hang_(true) --
- _pmp_right_top_hang_(true) --
- _pmp_snapped_multi_pos_(urxy[fpos]) --
- lrxy[fpos] --
+ nn := i ;
- else :
+ if compensate_multi_par_topskip and (round(LineHeight-ph-pd)=0) :
- llxy[fpos] --
- (xpart urcorner multipar, ypart llxy[fpos]) --
- (xpart urcorner multipar, ypart ulxy[fpos]) --
- _pmp_snapped_multi_pos_(ulxy[fpos]) --
+ TopSkipCorrection := TopSkip - StrutHeight ;
- fi cycle ;
+ 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 ;
- save_multipar (i,1,multipar) ;
+ fi ;
- multipar := _pmp_set_multipar_(i) ;
+ if ypart llxy[fpos] = ypart llxy[tpos] :
- multipar := if obey_multi_par_hang :
+ multipar :=
+ llxy[fpos] --
+ lrxy[tpos] --
+ _pmp_snapped_multi_pos_(urxy[tpos]) --
+ _pmp_snapped_multi_pos_(ulxy[fpos]) --
+ cycle ;
- _pmp_left_bottom_hang_(true) --
- llxy[tpos] --
- _pmp_snapped_multi_pos_(ulxy[tpos]) --
- _pmp_left_top_hang_(true) --
+ save_multipar (i,1,multipar) ;
- else :
+ elseif (ypart llxy[fpos] = ypart ulxy[tpos]) and (xpart llxy[tpos] < xpart llxy[fpos]) :
- (xpart llcorner multipar, ypart llxy[tpos]) --
- llxy[tpos] --
- _pmp_snapped_multi_pos_(ulxy[tpos]) --
- (xpart llcorner multipar, ypart ulxy[tpos]) --
+ % two loners
- fi cycle ;
+ multipar := if obey_multi_par_hang :
- save_multipar (i,1,multipar) ;
+ _pmp_right_bottom_hang_(true) --
+ _pmp_right_top_hang_(true) --
+ _pmp_snapped_multi_pos_(urxy[fpos]) --
+ lrxy[fpos] --
- else :
+ else :
- multipar := if obey_multi_par_hang :
+ llxy[fpos] --
+ (xpart urcorner multipar, ypart llxy[fpos]) --
+ (xpart urcorner multipar, ypart ulxy[fpos]) --
+ _pmp_snapped_multi_pos_(ulxy[fpos]) --
- _pmp_left_bottom_hang_(true) --
- llxy[tpos] --
- %ulxy[tpos] --
- _pmp_snapped_multi_pos_(ulxy[tpos]) --
- _pmp_right_bottom_hang_(true) --
- _pmp_right_top_hang_(true) --
- %urxy[fpos] --
- _pmp_snapped_multi_pos_(urxy[fpos]) --
- lrxy[fpos] --
- _pmp_left_top_hang_(true) --
-
- else :
-
- (xpart llcorner multipar, ypart llxy[tpos]) --
- llxy[tpos] --
- %ulxy[tpos] --
- _pmp_snapped_multi_pos_(ulxy[tpos]) --
- (xpart lrcorner multipar, ypart ulxy[tpos]) --
- (xpart urcorner multipar, ypart urxy[fpos]) --
- %urxy[fpos] --
- _pmp_snapped_multi_pos_(urxy[fpos]) --
- lrxy[fpos] --
- (xpart ulcorner multipar, ypart lrxy[fpos]) --
+ fi cycle ;
- fi cycle ;
+ save_multipar (i,1,multipar) ;
- save_multipar (i,1,multipar) ;
+ multipar := _pmp_set_multipar_(i) ;
- fi ;
+ multipar := if obey_multi_par_hang :
- else :
+ _pmp_left_bottom_hang_(true) --
+ llxy[tpos] --
+ _pmp_snapped_multi_pos_(ulxy[tpos]) --
+ _pmp_left_top_hang_(true) --
- multipar := if obey_multi_par_hang :
+ else :
- _pmp_left_bottom_hang_(false) --
- _pmp_right_bottom_hang_(false) --
- _pmp_right_top_hang_(false) --
- %urxy[fpos] --
- _pmp_snapped_multi_pos_(urxy[fpos]) --
- lrxy[fpos] --
- _pmp_left_top_hang_(false) --
+ (xpart llcorner multipar, ypart llxy[tpos]) --
+ llxy[tpos] --
+ _pmp_snapped_multi_pos_(ulxy[tpos]) --
+ (xpart llcorner multipar, ypart ulxy[tpos]) --
- else :
+ fi cycle ;
- llcorner multipar --
- lrcorner multipar --
- (xpart urcorner multipar, ypart urxy[fpos]) --
- %urxy[fpos] --
- _pmp_snapped_multi_pos_(urxy[fpos]) --
- lrxy[fpos] --
- (xpart ulcorner multipar, ypart lrxy[fpos]) --
+ save_multipar (i,1,multipar) ;
- fi cycle ;
+ else :
- save_multipar (i,1,multipar) ;
+ multipar := if obey_multi_par_hang :
- fi ;
+ _pmp_left_bottom_hang_(true) --
+ llxy[tpos] --
+ _pmp_snapped_multi_pos_(ulxy[tpos]) --
+ _pmp_right_bottom_hang_(true) --
+ _pmp_right_top_hang_(true) --
+ _pmp_snapped_multi_pos_(urxy[fpos]) --
+ lrxy[fpos] --
+ _pmp_left_top_hang_(true) --
-% elseif (nxy[tpos]=RealPageNumber) and (InsideTextArea(i,llxy[tpos])) :
- elseif (nxy[tpos]=RealPageNumber) and (InsideTextArea(i,par_stop_pos)) :
+ else :
- % last one in chain
+ (xpart llcorner multipar, ypart llxy[tpos]) --
+ llxy[tpos] --
+ _pmp_snapped_multi_pos_(ulxy[tpos]) --
+ (xpart lrcorner multipar, ypart ulxy[tpos]) --
+ (xpart urcorner multipar, ypart urxy[fpos]) --
+ _pmp_snapped_multi_pos_(urxy[fpos]) --
+ lrxy[fpos] --
+ (xpart ulcorner multipar, ypart lrxy[fpos]) --
- nn := i ;
+ fi cycle ;
- if obey_multi_par_hang and obey_multi_par_more :
+ save_multipar (i,1,multipar) ;
- multipar :=
- _pmp_x_left_top_hang_(i,true) --
- _pmp_x_right_top_hang_(i,true) --
- _pmp_x_right_bottom_hang_(i,true) --
- _pmp_snapped_multi_pos_(ulxy[tpos]) --
- llxy[tpos] --
- _pmp_x_left_bottom_hang_(i,true) --
- cycle ;
+ fi ;
- else :
+ else :
- multipar :=
- ulcorner multipar --
- urcorner multipar --
- (xpart lrcorner multipar, ypart urxy[tpos]) --
- _pmp_snapped_multi_pos_(ulxy[tpos]) --
- llxy[tpos] --
- (xpart llcorner multipar, ypart llxy[tpos]) --
- cycle ;
+ multipar := if obey_multi_par_hang :
- fi ;
+ _pmp_left_bottom_hang_(false) --
+ _pmp_right_bottom_hang_(false) --
+ _pmp_right_top_hang_(false) --
+ _pmp_snapped_multi_pos_(urxy[fpos]) --
+ lrxy[fpos] --
+ _pmp_left_top_hang_(false) --
- save_multipar (i,3,multipar) ;
+ else :
- elseif multi_column_first_page_hack and ((nxy[fpos]=RealPageNumber) and (nxy[tpos]>=RealPageNumber) and (NOfTextColumns>1)) :
+ llcorner multipar --
+ lrcorner multipar --
+ (xpart urcorner multipar, ypart urxy[fpos]) --
+ _pmp_snapped_multi_pos_(urxy[fpos]) --
+ lrxy[fpos] --
+ (xpart ulcorner multipar, ypart lrxy[fpos]) --
- save_multipar (i,2,multipar) ;
+ fi cycle ;
- else :
- % handled later
- fi ;
+ save_multipar (i,1,multipar) ;
- endfor ;
+ fi ;
- % second loop
+ elseif (nxy[tpos]=RealPageNumber) and (InsideTextArea(i,par_stop_pos)) :
- if force_multi_par_chain or (ii > 1) :
+ % last one in chain
- for i=ii+1 upto nn-1 :
+ nn := i ;
- % rest of chain / todo : hang
+ if obey_multi_par_hang and obey_multi_par_more :
-% hm, the second+ column in column sets now gets lost in a NOfTextColumns
+ multipar :=
+ _pmp_x_left_top_hang_(i,true) --
+ _pmp_x_right_top_hang_(i,true) --
+ _pmp_x_right_bottom_hang_(i,true) --
+ _pmp_snapped_multi_pos_(ulxy[tpos]) --
+ llxy[tpos] --
+ _pmp_x_left_bottom_hang_(i,true) --
+ cycle ;
- if (not check_multi_par_chain) or
- ((nxy[fpos]<RealPageNumber) and (nxy[tpos]>RealPageNumber))
- :
+ else :
- multipar := _pmp_set_multipar_(i) ;
+ multipar :=
+ ulcorner multipar --
+ urcorner multipar --
+ (xpart lrcorner multipar, ypart urxy[tpos]) --
+ _pmp_snapped_multi_pos_(ulxy[tpos]) --
+ llxy[tpos] --
+ (xpart llcorner multipar, ypart llxy[tpos]) --
+ cycle ;
- if obey_multi_par_hang and obey_multi_par_more :
+ fi ;
- multipar :=
- _pmp_x_left_top_hang_(i,false) --
- _pmp_x_right_top_hang_(i,false) --
- _pmp_x_right_bottom_hang_(i,false) --
- _pmp_x_left_bottom_hang_(i,false) --
- cycle ;
+ save_multipar (i,3,multipar) ;
- fi ;
+ elseif multi_column_first_page_hack and ((nxy[fpos]=RealPageNumber) and (nxy[tpos]>=RealPageNumber) and (NOfTextColumns>1)) :
- save_multipar(i,2,multipar) ;
+ save_multipar (i,2,multipar) ;
- fi ;
+ else :
+ % handled later
+ fi ;
- endfor ;
+ endfor ;
- fi ;
+ % second loop
- % end of normal/fallback
+ if force_multi_par_chain or (ii > 1) :
-fi ;
+ for i=ii+1 upto nn-1 :
- if span_multi_column_pars :
- endgroup ;
- fi ;
+ % rest of chain / todo : hang
- % potential safeguard:
+ % hm, the second+ column in column sets now gets lost in a NOfTextColumns
- % for i=1 upto nofmultipars :
- % if length p <= 4 :
- % multipars[i] := boundingbox(multipars[i]) ;
- % fi ;
- % end ;
+ if (not check_multi_par_chain) or ((nxy[fpos]<RealPageNumber) and (nxy[tpos]>RealPageNumber)) :
- % quick hack for gb:
+ multipar := _pmp_set_multipar_(i) ;
- one_piece_multi_par := (nofmultipars=1) and (pn=tn) ;
+ if obey_multi_par_hang and obey_multi_par_more :
+
+ multipar :=
+ _pmp_x_left_top_hang_(i,false) --
+ _pmp_x_right_top_hang_(i,false) --
+ _pmp_x_right_bottom_hang_(i,false) --
+ _pmp_x_left_bottom_hang_(i,false) --
+ cycle ;
+
+ fi ;
+
+ save_multipar(i,2,multipar) ;
+
+ fi ;
+
+ endfor ;
+
+ fi ;
+
+ % end of normal/fallback
+
+ fi ;
+
+ if span_multi_column_pars :
+ endgroup ;
+ fi ;
+
+ % potential safeguard:
+
+ % for i=1 upto nofmultipars :
+ % if length p <= 4 :
+ % multipars[i] := boundingbox(multipars[i]) ;
+ % fi ;
+ % end ;
+
+ % quick hack for gb:
+
+ one_piece_multi_par := (nofmultipars=1) and (pn=tn) ;
enddef ;
@@ -974,380 +964,375 @@ numeric boxgriddistance ; boxgriddistance := .5cm ;
numeric boxgridshift ; boxgridshift := 0pt ;
def draw_box =
- draw pxy boxlineoptions withpen pencircle scaled boxlinewidth ;
- draw lxy -- rxy boxlineoptions withpen pencircle scaled boxgridwidth ;
+ draw pxy boxlineoptions withpen pencircle scaled boxlinewidth ;
+ draw lxy -- rxy boxlineoptions withpen pencircle scaled boxgridwidth ;
enddef ;
def draw_par = % 1 2 3 11 12
- do_draw_par(pxy) ; do_draw_par(txy) ; do_draw_par(bxy) ;
- for i = pxy, txy, bxy :
+ do_draw_par(pxy) ; do_draw_par(txy) ; do_draw_par(bxy) ;
+ for i = pxy, txy, bxy :
if boxgridtype = 1 :
- boxgriddirection := origin ;
- draw baseline_grid (i,boxgriddirection,true ) boxgridoptions ;
- elseif boxgridtype = 2 :
- boxgriddirection := origin ;
- draw baseline_grid (i,boxgriddirection,false) boxgridoptions ;
- elseif boxgridtype = 3 :
- boxgriddirection := origin ;
- draw baseline_grid (i,boxgriddirection,true ) boxgridoptions ;
- draw baseline_grid (i,boxgriddirection,true )
- shifted (0,ExHeight) boxgridoptions ;
- elseif boxgridtype = 4 :
- boxgriddirection := origin ;
- draw baseline_grid (i,boxgriddirection,true )
- shifted (0,ExHeight/2) boxgridoptions ;
- elseif boxgridtype = 11 :
- draw graphic_grid(i,boxgriddistance,boxgriddistance,boxgriddistance/2,boxgriddistance/2) ;
- elseif boxgridtype = 12 :
- draw graphic_grid(i,boxgriddistance,boxgriddistance,0,0) ;
- fi ;
- endfor ;
+ boxgriddirection := origin ;
+ draw baseline_grid (i,boxgriddirection,true ) boxgridoptions ;
+ elseif boxgridtype = 2 :
+ boxgriddirection := origin ;
+ draw baseline_grid (i,boxgriddirection,false) boxgridoptions ;
+ elseif boxgridtype = 3 :
+ boxgriddirection := origin ;
+ draw baseline_grid (i,boxgriddirection,true ) boxgridoptions ;
+ draw baseline_grid (i,boxgriddirection,true ) shifted (0,ExHeight) boxgridoptions ;
+ elseif boxgridtype = 4 :
+ boxgriddirection := origin ;
+ draw baseline_grid (i,boxgriddirection,true ) shifted (0,ExHeight/2) boxgridoptions ;
+ elseif boxgridtype = 11 :
+ draw graphic_grid(i,boxgriddistance,boxgriddistance,boxgriddistance/2,boxgriddistance/2) ;
+ elseif boxgridtype = 12 :
+ draw graphic_grid(i,boxgriddistance,boxgriddistance,0,0) ;
+ fi ;
+ endfor ;
enddef ;
def do_show_par (expr p, r, c) =
- if length(p) > 2 : for i=0 upto length(p) :
- draw fullcircle scaled r shifted point i of p
- withpen pencircle scaled .5pt withcolor c ;
- endfor ; fi ;
- draw p withpen pencircle scaled .5pt withcolor c ;
+ 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 ;
+ 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 ;
+ 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 ;
+ 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]) ;
+ for i=1 upto nofmultipars :
+ do_draw_par(multipars[i]) ;
if boxgridtype= 1 :
- draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) ;
- elseif boxgridtype= 2 :
- draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,false) ;
- elseif boxgridtype= 3 :
- draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) ;
- draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) shifted (0,ExHeight) ;
- elseif boxgridtype= 4 :
- draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) shifted (0,ExHeight/2) ;
- elseif boxgridtype=11 :
- draw graphic_grid(multipars[i],boxgriddistance,boxgriddistance,boxgriddistance/2,boxgriddistance/2) ;
- elseif boxgridtype=12 :
- draw graphic_grid(multipars[i],boxgriddistance,boxgriddistance,0,0) ;
- fi ;
- endfor ;
+ draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) ;
+ elseif boxgridtype= 2 :
+ draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,false) ;
+ elseif boxgridtype= 3 :
+ draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) ;
+ draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) shifted (0,ExHeight) ;
+ elseif boxgridtype= 4 :
+ draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) shifted (0,ExHeight/2) ;
+ elseif boxgridtype=11 :
+ draw graphic_grid(multipars[i],boxgriddistance,boxgriddistance,boxgriddistance/2,boxgriddistance/2) ;
+ elseif boxgridtype=12 :
+ draw graphic_grid(multipars[i],boxgriddistance,boxgriddistance,0,0) ;
+ fi ;
+ endfor ;
enddef ;
def show_multi_pars =
- for i=1 upto nofmultipars :
- do_show_par(multipars[i], 6pt, .5blue) ;
- endfor ;
+ for i=1 upto nofmultipars :
+ do_show_par(multipars[i], 6pt, .5blue) ;
+ endfor ;
enddef ;
vardef do_draw_par (expr p) =
- if (length p>2) and (bbwidth(p)>1) and (bbheight(p)>1) :
- save pp ; path pp ;
- if (boxlineradius>0) and (boxlinetype=2) :
- pp := p cornered boxlineradius ;
- else :
- pp := p ;
- fi ;
- if boxfilltype>0 :
- if boxfilloffset>0 :
- % temporary hack
- begingroup ; interim linejoin := mitered ;
- filldraw pp boxfilloptions withpen pencircle scaled (2*boxfilloffset) ;
- endgroup ;
- else :
- fill pp boxfilloptions ;
- fi ;
- fi ;
- if boxlinetype>0 :
- draw pp boxlineoptions withpen pencircle scaled boxlinewidth ;
+ if (length p>2) and (bbwidth(p)>1) and (bbheight(p)>1) :
+ save pp ; path pp ;
+ if (boxlineradius>0) and (boxlinetype=2) :
+ pp := p cornered boxlineradius ;
+ else :
+ pp := p ;
+ fi ;
+ if boxfilltype>0 :
+ if boxfilloffset>0 :
+ % temporary hack
+ begingroup ;
+ interim linejoin := mitered ;
+ filldraw pp boxfilloptions withpen pencircle scaled (2*boxfilloffset) ;
+ endgroup ;
+ else :
+ fill pp boxfilloptions ;
+ fi ;
+ fi ;
+ if boxlinetype>0 :
+ draw pp boxlineoptions withpen pencircle scaled boxlinewidth ;
+ fi ;
fi ;
- 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
- boxfilloptions ;
- fi ;
- draw start -- start shifted (bbwidth(pxy),0)
- if boxdashtype > 0 : dashed evenly fi
- withpen pencircle scaled boxgridwidth
- boxgridoptions ;
- enddef ;
- grid := image
- ( %fails with inlinespace
- %
- if pdir=up :
- for i = if at_baseline : par_strut_depth else : 0 fi
- step par_line_height
- until max(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
+ 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
+ boxfilloptions ;
+ fi ;
+ draw start -- start shifted (bbwidth(pxy),0)
+ if boxdashtype > 0 :
+ dashed evenly
+ fi
+ withpen pencircle scaled boxgridwidth
+ boxgridoptions ;
+ enddef ;
+ grid := image ( %fails with inlinespace
+ if pdir=up :
+ for i = if at_baseline : par_strut_depth else : 0 fi step par_line_height until max(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
+ 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) ;
+ 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 ;
+ 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
+ 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 ;
+ sync_c[n][i] := c ;
enddef ;
def SetSyncThreshold(expr n, i, th) =
- sync_th[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
+ 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
+ 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 ;
+ 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 ;
- 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 ;
+ endfor ;
+ if (NOfSyncPaths = 0) and (l > 0) :
+ NOfSyncPaths := 1 ;
+ SyncPaths[NOfSyncPaths] := SyncBox(n, l, SyncLeftOffset, SyncWidth, PaperHeight, -PaperHeight) ;
+ SyncTasks[NOfSyncPaths] := l ;
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 ;
+ 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 ;
- 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 ;
+ 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 ;
- 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 ;
+ 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 ;
- 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
+ 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 ;
+ 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 ;
+ fill p withcolor c ;
enddef ;
endinput ;
diff --git a/metapost/context/base/mp-figs.mp b/metapost/context/base/mp-figs.mpii
index da5fa0d16..c90dc3971 100644
--- a/metapost/context/base/mp-figs.mp
+++ b/metapost/context/base/mp-figs.mpii
@@ -1,5 +1,5 @@
%D \module
-%D [ file=mp-tool.mp,
+%D [ file=mp-figs.mp,
%D version=2003.01.15,
%D title=\CONTEXT\ \METAPOST\ graphics,
%D subtitle=figures,
@@ -11,37 +11,36 @@
%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 ;
+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 ;
+ 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
+ save s, p ; string s ; pair p ;
+ s := cleanstring(name) ;
+ scantokens( "p := " & "(" & s & "_width" & "," & s & "_height" & ")" ) ;
+ p
enddef ;
vardef figurewidth(expr name) =
- xpart figuresize(name)
+ xpart figuresize(name)
enddef ;
vardef figureheight(expr name) =
- ypart figuresize(name)
+ ypart figuresize(name)
enddef ;
-def figuredimensions = figuresize enddef ; % for old times sake
+let figuredimensions = figuresize ; % for old times sake
def naturalfigure(expr name) =
externalfigure name xyscaled(figuresize(name))
diff --git a/metapost/context/base/mp-figs.mpiv b/metapost/context/base/mp-figs.mpiv
new file mode 100644
index 000000000..c90dc3971
--- /dev/null
+++ b/metapost/context/base/mp-figs.mpiv
@@ -0,0 +1,49 @@
+%D \module
+%D [ file=mp-figs.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 known context_figs : endinput ; fi ;
+
+boolean context_figs ; context_figs := true ;
+
+% todo: check defined
+
+def registerfigure(expr name,width,height) =
+ begingroup ;
+ save s ; string s ; s := cleanstring(name) ;
+ scantokens( s & "_width := " & decimal(width )) ;
+ scantokens( s & "_height := " & decimal(height)) ;
+ endgroup ;
+enddef ;
+
+vardef figuresize(expr name) =
+ save s, p ; string s ; pair p ;
+ s := cleanstring(name) ;
+ scantokens( "p := " & "(" & s & "_width" & "," & s & "_height" & ")" ) ;
+ p
+enddef ;
+
+vardef figurewidth(expr name) =
+ xpart figuresize(name)
+enddef ;
+
+vardef figureheight(expr name) =
+ ypart figuresize(name)
+enddef ;
+
+let figuredimensions = figuresize ; % for old times sake
+
+def naturalfigure(expr name) =
+ externalfigure name xyscaled(figuresize(name))
+enddef ;
+
+endinput
diff --git a/metapost/context/base/mp-fobg.mp b/metapost/context/base/mp-fobg.mp
index 712efe751..f8b709572 100644
--- a/metapost/context/base/mp-fobg.mp
+++ b/metapost/context/base/mp-fobg.mp
@@ -11,8 +11,7 @@
%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 ;
+if known context_fobg : endinput ; fi ;
boolean context_fobg ; context_fobg := true ;
diff --git a/metapost/context/base/mp-func.mp b/metapost/context/base/mp-func.mp
deleted file mode 100644
index d8646ef3b..000000000
--- a/metapost/context/base/mp-func.mp
+++ /dev/null
@@ -1,59 +0,0 @@
-%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-func.mpii b/metapost/context/base/mp-func.mpii
new file mode 100644
index 000000000..407d534e8
--- /dev/null
+++ b/metapost/context/base/mp-func.mpii
@@ -0,0 +1,58 @@
+%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 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-func.mpiv b/metapost/context/base/mp-func.mpiv
new file mode 100644
index 000000000..6ce7ee82a
--- /dev/null
+++ b/metapost/context/base/mp-func.mpiv
@@ -0,0 +1,70 @@
+%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 known context_func : endinput ; fi ;
+
+boolean context_func ; context_func := true ;
+
+string mfun_pathconnectors[] ;
+
+mfun_pathconnectors[0] := "," ;
+mfun_pathconnectors[1] := "--" ;
+mfun_pathconnectors[2] := ".." ;
+mfun_pathconnectors[3] := "..." ;
+
+vardef mfun_draw_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(mfun_pathconnectors[f])
+ fi
+ (scantokens(u),scantokens(t))
+ endfor
+enddef ;
+
+def punkedfunction = mfun_function (1) enddef ;
+def curvedfunction = mfun_function (2) enddef ;
+def tightfunction = mfun_function (3) enddef ;
+
+vardef mfun_constructedpath (expr f) (text t) =
+ save ok ; boolean ok ; ok := false ;
+ for i=t :
+ if ok :
+ scantokens(mfun_pathconnectors[f])
+ else :
+ ok := true ;
+ fi
+ i
+ endfor
+enddef ;
+
+def punkedpath = mfun_constructedpath (1) enddef ;
+def curvedpath = mfun_constructedpath (2) enddef ;
+def tightpath = mfun_constructedpath (3) enddef ;
+
+vardef mfun_constructedpairs (expr f) (text p) =
+ save i ; i := -1 ;
+ forever :
+ exitif unknown p[incr(i)] ;
+ if i>0 :
+ scantokens(mfun_pathconnectors[f])
+ fi
+ p[i]
+ endfor
+enddef ;
+
+def punkedpairs = mfun_constructedpairs (1) enddef ;
+def curvedpairs = mfun_constructedpairs (2) enddef ;
+def tightpairs = mfun_constructedpairs (3) enddef ;
diff --git a/metapost/context/base/mp-grid.mp b/metapost/context/base/mp-grid.mpii
index c87df821c..bfc8dfed6 100644
--- a/metapost/context/base/mp-grid.mp
+++ b/metapost/context/base/mp-grid.mpii
@@ -13,8 +13,7 @@
%D Under construction.
-if unknown context_tool : input mp-tool ; fi ;
-if known context_grid : endinput ; fi ;
+if known context_grid : endinput ; fi ;
boolean context_grid ; context_grid := true ;
diff --git a/metapost/context/base/mp-grid.mpiv b/metapost/context/base/mp-grid.mpiv
new file mode 100644
index 000000000..ee8f2489d
--- /dev/null
+++ b/metapost/context/base/mp-grid.mpiv
@@ -0,0 +1,170 @@
+%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 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("${}^2$")
+ ) ;
+ if unknown _trial_run_ :
+ numbers_initialized := true ;
+ else :
+ % no reset, otherwise textexts get out of sync
+ % slows down graphics a bit but not much
+ fi ;
+ 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 ;
+
+vardef processpath (expr p) (text pp) =
+ if path p :
+ for i=0 upto length(p)-1 :
+ pp(point i of p) .. controls
+ pp(postcontrol i of p) and
+ pp(precontrol (i+1) of p) ..
+ endfor
+ if cycle p :
+ cycle
+ else :
+ pp(point length(p) of p)
+ fi
+ elseif pair p :
+ pp(p)
+ else :
+ p
+ fi
+enddef ;
diff --git a/metapost/context/base/mp-grph.mp b/metapost/context/base/mp-grph.mpii
index 48776a09f..18183304c 100644
--- a/metapost/context/base/mp-grph.mp
+++ b/metapost/context/base/mp-grph.mpii
@@ -13,8 +13,7 @@
%D Under construction.
-if unknown context_tool : input mp-tool ; fi ;
-if known context_grph : endinput ; fi ;
+if known context_grph : endinput ; fi ;
boolean context_grph ; context_grph := true ;
diff --git a/metapost/context/base/mp-grph.mpiv b/metapost/context/base/mp-grph.mpiv
new file mode 100644
index 000000000..7291103ec
--- /dev/null
+++ b/metapost/context/base/mp-grph.mpiv
@@ -0,0 +1,259 @@
+%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 known context_grph : endinput ; fi ;
+
+boolean context_grph ; context_grph := true ;
+
+picture _currentpicture_ ;
+
+numeric _fig_nesting_ ; _fig_nesting_ := 0 ;
+
+def beginfig (expr c) =
+ _fig_nesting_ := _fig_nesting_ + 1 ;
+ if _fig_nesting_ = 1 :
+ begingroup
+ charcode := c ;
+ resetfig ;
+ scantokens extra_beginfig ;
+ fi ;
+enddef ;
+
+def endfig =
+ ; % safeguard
+ if _fig_nesting_ = 1 :
+ scantokens extra_endfig;
+ shipit ;
+ endgroup ;
+ fi ;
+ _fig_nesting_ := _fig_nesting_ - 1 ;
+enddef;
+
+def resetfig =
+ clearxy ;
+ clearit ;
+ clearpen ;
+ pickup defaultpen ;
+ interim linecap := linecap ;
+ interim linejoin := linejoin ;
+ interim miterlimit := miterlimit ;
+ save _background_ ; color _background_ ; _background_ := background ;
+ save background ; color background ; background := _background_ ;
+ drawoptions () ;
+enddef ;
+
+def protectgraphicmacros =
+ save showtext ;
+ save beginfig ; let beginfig = begingraphictextfig ;
+ save endfig ; let endfig = endgraphictextfig ;
+ save end ; let end = relax ;
+ interim prologues := prologues ;
+ resetfig ; % resets currentpicture
+enddef ;
+
+numeric currentgraphictext ; currentgraphictext := 0 ;
+
+def data_mpo_file = job_name & "-mpgraph.mpo" enddef ;
+def data_mpy_file = job_name & "-mpgraph.mpy" enddef ;
+
+def begingraphictextfig (expr n) =
+ foundpicture := n ;
+ scratchpicture := nullpicture ;
+enddef ;
+
+def endgraphictextfig =
+ if foundpicture = currentgraphictext :
+ expandafter endinput
+ else :
+ scratchpicture := nullpicture ;
+ fi ;
+enddef ;
+
+def loadfigure primary filename =
+ doloadfigure (filename)
+enddef ;
+
+def doloadfigure (expr filename) text figureattributes =
+ begingroup ;
+ save figurenumber, figurepicture, number, fixedplace ;
+ numeric figurenumber ; figurenumber := 0 ;
+ boolean figureshift ; figureshift := true ;
+ picture figurepicture ; figurepicture := currentpicture ;
+ def number primary n = hide(figurenumber := n) enddef ;
+ def fixedplace = hide(figureshift := false) enddef ;
+ protectgraphicmacros ;
+ % defaults
+ interim linecap := rounded ;
+ interim linejoin := rounded ;
+ interim miterlimit := 10 ;
+ %
+ currentpicture := nullpicture ;
+ draw fullcircle figureattributes ; % expand number
+ currentpicture := nullpicture ;
+ def beginfig (expr n) =
+ currentpicture := nullpicture ;
+ if (figurenumber=n) or (figurenumber=0) :
+ let endfig = endinput ;
+ fi ;
+ enddef ;
+ let endfig = relax ;
+ readfile(filename) ;
+ if figureshift :
+ currentpicture := currentpicture shifted -llcorner currentpicture ;
+ fi ;
+ addto figurepicture also currentpicture figureattributes ;
+ currentpicture := figurepicture ;
+ endgroup ;
+enddef ;
+
+def graphictext primary t =
+ if mfun_trial_run :
+ let mfun_graphic_text = mfun_no_graphic_text ;
+ else :
+ let mfun_graphic_text = mfun_do_graphic_text ;
+ fi
+ mfun_graphic_text(t)
+enddef ;
+
+def mfun_do_graphic_text (expr t) =
+ % withprescript "gt_stage=final"
+ begingroup ;
+ save figurepicture ; picture figurepicture ;
+ figurepicture := currentpicture ; currentpicture := nullpicture ;
+ currentgraphictext := currentgraphictext + 1 ;
+ mfun_finish_graphic_text % picks up directives
+enddef ;
+
+def mfun_no_graphic_text (expr t) text rest =
+ draw unitsquare withprescript "gt_stage=trial" withpostscript t
+enddef ;
+
+def mfun_finish_graphic_text 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 ;
+
+endinput
+
+% example
+
+beginfig (1) ;
+ graphictext
+ "\vbox{\hsize10cm \input tufte }"
+ scaled 8
+ withdrawcolor blue
+ withfillcolor red
+ withpen pencircle scaled 2pt ;
+endfig ;
+
+beginfig(1) ;
+ loadfigure "gracht.mp" rotated 20 ;
+ loadfigure "koe.mp" number 1 scaled 2 ;
+endfig ;
+
+end
diff --git a/metapost/context/base/mp-mlib.mpiv b/metapost/context/base/mp-mlib.mpiv
index c7240e127..fe27bee47 100644
--- a/metapost/context/base/mp-mlib.mpiv
+++ b/metapost/context/base/mp-mlib.mpiv
@@ -89,28 +89,30 @@ def withtransparency(expr alternative, transparency) =
withprescript "tr_transparency=" & decimal transparency
enddef ;
-def cmyk(expr c, m, y, k) =
+def cmyk(expr c, m, y, k) = % provided for downward compability
(c,m,y,k)
enddef ;
-% Texts
+% Texts (todo: better strut ratio, now .7 hardcoded, should be passed)
-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 ;
+newinternal textextoffset ; textextoffset := 0 ;
-def resettextexts =
- _tt_n_ := 0 ;
- _tt_p_ := nullpicture ;
+numeric mfun_tt_w[], mfun_tt_h[], mfun_tt_d[] ; % we can consider using colors (less hash space)
+numeric mfun_tt_n ; mfun_tt_n := 0 ;
+picture mfun_tt_p ; mfun_tt_p := nullpicture ;
+boolean mfun_trial_run ; mfun_trial_run := false ;
+
+def mfun_reset_tex_texts =
+ mfun_tt_n := 0 ;
+ mfun_tt_p := nullpicture ;
enddef ;
-def flushtextexts =
- addto currentpicture also _tt_p_
+def mfun_flush_tex_texts =
+ addto currentpicture also mfun_tt_p
enddef ;
-extra_endfig := "flushtextexts;" & extra_endfig;
-extra_beginfig := extra_beginfig & "resettextexts;";
+extra_endfig := "mfun_flush_tex_texts;" & extra_endfig;
+extra_beginfig := extra_beginfig & "mfun_reset_tex_texts;";
% We collect and flush them all, as we can also have temporary textexts
% that gets never really flushed but are used for calculations. So, we
@@ -120,29 +122,29 @@ extra_beginfig := extra_beginfig & "resettextexts;";
vardef rawtextext(expr str) =
if str = "" :
nullpicture
- elseif _trial_run_ :
- _tt_n_ := _tt_n_ + 1 ;
- addto _tt_p_ doublepath unitsquare
- withprescript "tx_number=" & decimal _tt_n_
+ elseif mfun_trial_run :
+ mfun_tt_n := mfun_tt_n + 1 ;
+ addto mfun_tt_p doublepath unitsquare
+ withprescript "tx_number=" & decimal mfun_tt_n
withprescript "tx_stage=extra"
withpostscript str ;
image (
addto currentpicture doublepath unitsquare
- withprescript "tx_number=" & decimal _tt_n_
+ withprescript "tx_number=" & decimal mfun_tt_n
withprescript "tx_stage=trial"
withpostscript str
)
else :
- _tt_n_ := _tt_n_ + 1 ;
- if known _tt_d_[_tt_n_] :
+ mfun_tt_n := mfun_tt_n + 1 ;
+ if known mfun_tt_d[mfun_tt_n] :
image (
addto currentpicture doublepath unitsquare
- xscaled _tt_w_[_tt_n_]
- yscaled (_tt_h_[_tt_n_] + _tt_d_[_tt_n_])
- withprescript "tx_number=" & decimal _tt_n_
+ xscaled mfun_tt_w[mfun_tt_n]
+ yscaled (mfun_tt_h[mfun_tt_n] + mfun_tt_d[mfun_tt_n])
+ withprescript "tx_number=" & decimal mfun_tt_n
withprescript "tx_stage=final"
; % withpostscript str ;
- ) shifted (0,-_tt_d_[_tt_n_])
+ ) shifted (0,-mfun_tt_d[mfun_tt_n])
else :
image (
addto currentpicture doublepath unitsquare ;
@@ -153,119 +155,116 @@ enddef ;
% More text
-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 ;
-
-numeric labxf.l ; labxf.l = labxf.lft ;
-numeric labxf.r ; labxf.r = labxf.rt ;
-numeric labxf.b ; labxf.b = labxf.bot ;
-numeric labxf.t ; labxf.t = labxf.top ;
-numeric labxf.l_t ; labxf.l_t = labxf.ulft ;
-numeric labxf.r_t ; labxf.r_t = labxf.urt ;
-numeric labxf.l_b ; labxf.l_b = labxf.llft ;
-numeric labxf.r_b ; labxf.r_b = labxf.lrt ;
-numeric labxf.t_l ; labxf.t_l = labxf.ulft ;
-numeric labxf.t_r ; labxf.t_r = labxf.urt ;
-numeric labxf.b_l ; labxf.b_l = labxf.llft ;
-numeric labxf.b_r ; labxf.b_r = labxf.lrt ;
-
-numeric labyf.l ; labyf.l = labyf.lft ;
-numeric labyf.r ; labyf.r = labyf.rt ;
-numeric labyf.b ; labyf.b = labyf.bot ;
-numeric labyf.t ; labyf.t = labyf.top ;
-numeric labyf.l_t ; labyf.l_t = labyf.ulft ;
-numeric labyf.r_t ; labyf.r_t = labyf.urt ;
-numeric labyf.l_b ; labyf.l_b = labyf.llft ;
-numeric labyf.r_b ; labyf.r_b = labyf.lrt ;
-numeric labyf.t_l ; labyf.t_l = labyf.ulft ;
-numeric labyf.t_r ; labyf.t_r = labyf.urt ;
-numeric labyf.b_l ; labyf.b_l = labyf.llft ;
-numeric labyf.b_r ; labyf.b_r = labyf.lrt ;
-
-numeric labtype.l ; labtype.l = labtype.lft ;
-numeric labtype.r ; labtype.r = labtype.rt ;
-numeric labtype.b ; labtype.b = labtype.bot ;
-numeric labtype.t ; labtype.t = labtype.top ;
-numeric labtype.l_t ; labtype.l_t = labtype.ulft ;
-numeric labtype.r_t ; labtype.r_t = labtype.urt ;
-numeric labtype.l_b ; labtype.l_b = labtype.llft ;
-numeric labtype.r_b ; labtype.r_b = labtype.lrt ;
-numeric labtype.t_l ; labtype.t_l = labtype.ulft ;
-numeric labtype.t_r ; labtype.t_r = labtype.urt ;
-numeric labtype.b_l ; labtype.b_l = labtype.llft ;
-numeric labtype.b_r ; labtype.b_r = labtype.lrt ;
-
-vardef thetextext@#(expr p,z) = % adapted copy of thelabel@
+defaultfont := "Mono" ; % was cmr10, could be lmmono10-regular, but is fed into context anyway
+
+pair mfun_laboff ; mfun_laboff := (0,0) ;
+pair mfun_laboff.lft ; mfun_laboff.lft := (-1,0) ;
+pair mfun_laboff.rt ; mfun_laboff.rt := (1,0) ;
+pair mfun_laboff.bot ; mfun_laboff.bot := (0,-1) ;
+pair mfun_laboff.top ; mfun_laboff.top := (0,1) ;
+pair mfun_laboff.ulft ; mfun_laboff.ulft := (-.7,.7) ;
+pair mfun_laboff.urt ; mfun_laboff.urt := (.7,.7) ;
+pair mfun_laboff.llft ; mfun_laboff.llft := -(.7,.7) ;
+pair mfun_laboff.lrt ; mfun_laboff.lrt := (.7,-.7) ;
+
+pair mfun_laboff.d ; mfun_laboff.d := mfun_laboff ;
+pair mfun_laboff.dlft ; mfun_laboff.dlft := mfun_laboff.lft ;
+pair mfun_laboff.drt ; mfun_laboff.drt := mfun_laboff.rt ;
+pair mfun_laboff.origin ; mfun_laboff.origin := origin ;
+pair mfun_laboff.raw ; mfun_laboff.raw := origin ;
+
+pair mfun_laboff.l ; mfun_laboff.l := mfun_laboff.lft ;
+pair mfun_laboff.r ; mfun_laboff.r := mfun_laboff.rt ;
+pair mfun_laboff.b ; mfun_laboff.b := mfun_laboff.bot ;
+pair mfun_laboff.t ; mfun_laboff.t := mfun_laboff.top ;
+pair mfun_laboff.l_t ; mfun_laboff.l_t := mfun_laboff.ulft ;
+pair mfun_laboff.r_t ; mfun_laboff.r_t := mfun_laboff.urt ;
+pair mfun_laboff.l_b ; mfun_laboff.l_b := mfun_laboff.llft ;
+pair mfun_laboff.r_b ; mfun_laboff.r_b := mfun_laboff.lrt ;
+pair mfun_laboff.t_l ; mfun_laboff.t_l := mfun_laboff.ulft ;
+pair mfun_laboff.t_r ; mfun_laboff.t_r := mfun_laboff.urt ;
+pair mfun_laboff.b_l ; mfun_laboff.b_l := mfun_laboff.llft ;
+pair mfun_laboff.b_r ; mfun_laboff.b_r := mfun_laboff.lrt ;
+
+mfun_labxf := 0.5 ;
+mfun_labxf.lft := mfun_labxf.l := 1 ;
+mfun_labxf.rt := mfun_labxf.r := 0 ;
+mfun_labxf.bot := mfun_labxf.b := 0.5 ;
+mfun_labxf.top := mfun_labxf.t := 0.5 ;
+mfun_labxf.ulft := mfun_labxf.l_t := mfun_labxf.t_l := 1 ;
+mfun_labxf.urt := mfun_labxf.r_t := mfun_labxf.t_r := 0 ;
+mfun_labxf.llft := mfun_labxf.l_b := mfun_labxf.b_l := 1 ;
+mfun_labxf.lrt := mfun_labxf.r_b := mfun_labxf.b_r := 0 ;
+
+mfun_labxf.d := mfun_labxf ;
+mfun_labxf.dlft := mfun_labxf.lft ;
+mfun_labxf.drt := mfun_labxf.rt ;
+mfun_labxf.origin := 0 ;
+mfun_labxf.raw := 0 ;
+
+mfun_labyf := 0.5 ;
+mfun_labyf.lft := mfun_labyf.l := 0.5 ;
+mfun_labyf.rt := mfun_labyf.r := 0.5 ;
+mfun_labyf.bot := mfun_labyf.b := 1 ;
+mfun_labyf.top := mfun_labyf.t := 0 ;
+mfun_labyf.ulft := mfun_labyf.l_t := mfun_labyf.t_l := 0 ;
+mfun_labyf.urt := mfun_labyf.r_t := mfun_labyf.t_r := 0 ;
+mfun_labyf.llft := mfun_labyf.l_b := mfun_labyf.b_l := 1 ;
+mfun_labyf.lrt := mfun_labyf.r_b := mfun_labyf.b_r := 1 ;
+
+mfun_labyf.d := mfun_labyf ;
+mfun_labyf.dlft := mfun_labyf.lft ;
+mfun_labyf.drt := mfun_labyf.rt ;
+mfun_labyf.origin := 0 ;
+mfun_labyf.raw := 0 ;
+
+mfun_labtype := 0 ;
+mfun_labtype.lft := mfun_labtype.l := 1 ;
+mfun_labtype.rt := mfun_labtype.r := 2 ;
+mfun_labtype.bot := mfun_labtype.b := 3 ;
+mfun_labtype.top := mfun_labtype.t := 4 ;
+mfun_labtype.ulft := mfun_labtype.l_t := mfun_labtype.t_l := 5 ;
+mfun_labtype.urt := mfun_labtype.r_t := mfun_labtype.t_r := 6 ;
+mfun_labtype.llft := mfun_labtype.l_b := mfun_labtype.b_l := 7 ;
+mfun_labtype.lrt := mfun_labtype.r_b := mfun_labtype.b_r := 8 ;
+mfun_labtype.d := 10 ;
+mfun_labtype.dlft := 11 ;
+mfun_labtype.drt := 12 ;
+mfun_labtype.origin := 0 ;
+mfun_labtype.raw := 0 ;
+
+vardef thetextext@#(expr p,z) =
+ % interim labeloffset := textextoffset ;
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))
+ if (mfun_labtype@# >= 10) :
+ shifted (0,ypart center p)
+ fi
+ shifted (z + textextoffset*mfun_laboff@# - (mfun_labxf@#*lrcorner p + mfun_labyf@#*ulcorner p + (1-mfun_labxf@#-mfun_labyf@#)*llcorner p))
fi
enddef ;
-vardef textext@#(expr txt) =
- interim labeloffset := textextoffset ;
- if string txt :
- thetextext@#(rawtextext(txt),origin)
- else :
- thetextext@#(txt,origin)
- fi
+vardef textext@#(expr p) =
+ thetextext@#(p,origin)
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 ;
+vardef thelabel@#(expr p,z) =
+ if string p :
+ thelabel@#(rawtextext("\definedfont[" & defaultfont & "]" & p) scaled defaultscale,z)
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))
+ p shifted (z + labeloffset*mfun_laboff@# - (mfun_labxf@#*lrcorner p + mfun_labyf@#*ulcorner p + (1-mfun_labxf@#-mfun_labyf@#)*llcorner p))
+ fi
enddef;
+def label = % takes two arguments, contrary to textext that takes one
+ draw thelabel
+enddef ;
+
let normalinfont = infont ;
-primarydef str infont name = % very naughty !
+primarydef str infont name = % nasty hack
if name = "" :
textext(str)
else :
@@ -346,72 +345,73 @@ def withlinearshade (expr a, b, ca, cb) =
withprescript "sh_center_b=" & ddecimal (b shifted shadeoffset)
enddef ;
-string _defined_cs_pre_[] ; numeric _defined_cs_ ; _defined_cs_:= 0 ;
-string prescript_separator ; prescript_separator := char(13) ;
+string mfun_defined_cs_pre[] ; numeric mfun_defined_cs ; mfun_defined_cs := 0 ;
+
+string mfun_prescript_separator ; mfun_prescript_separator := char(13) ;
vardef define_circular_shade (expr a, b, ra, rb, ca, cb) =
- _defined_cs_ := _defined_cs_ + 1 ;
- _defined_cs_pre_ [_defined_cs_] := "sh_type=circular"
- & prescript_separator & "sh_domain=0 1"
- & prescript_separator & "sh_factor=" & decimal shadefactor
- & prescript_separator & "sh_color_a=" & colordecimals ca
- & prescript_separator & "sh_color_b=" & colordecimals cb
- & prescript_separator & "sh_center_a=" & ddecimal (a shifted shadeoffset)
- & prescript_separator & "sh_center_b=" & ddecimal (b shifted shadeoffset)
- & prescript_separator & "sh_radius_a=" & decimal ra
- & prescript_separator & "sh_radius_b=" & decimal rb
+ mfun_defined_cs := mfun_defined_cs + 1 ;
+ mfun_defined_cs_pre[mfun_defined_cs] := "sh_type=circular"
+ & mfun_prescript_separator & "sh_domain=0 1"
+ & mfun_prescript_separator & "sh_factor=" & decimal shadefactor
+ & mfun_prescript_separator & "sh_color_a=" & colordecimals ca
+ & mfun_prescript_separator & "sh_color_b=" & colordecimals cb
+ & mfun_prescript_separator & "sh_center_a=" & ddecimal (a shifted shadeoffset)
+ & mfun_prescript_separator & "sh_center_b=" & ddecimal (b shifted shadeoffset)
+ & mfun_prescript_separator & "sh_radius_a=" & decimal ra
+ & mfun_prescript_separator & "sh_radius_b=" & decimal rb
;
- _defined_cs_
+ mfun_defined_cs
enddef ;
vardef define_linear_shade (expr a, b, ca, cb) =
- _defined_cs_ := _defined_cs_ + 1 ;
- _defined_cs_pre_ [_defined_cs_] := "sh_type=linear"
- & prescript_separator & "sh_domain=0 1"
- & prescript_separator & "sh_factor=" & decimal shadefactor
- & prescript_separator & "sh_color_a=" & colordecimals ca
- & prescript_separator & "sh_color_b=" & colordecimals cb
- & prescript_separator & "sh_center_a=" & ddecimal (a shifted shadeoffset)
- & prescript_separator & "sh_center_b=" & ddecimal (b shifted shadeoffset)
+ mfun_defined_cs := mfun_defined_cs + 1 ;
+ mfun_defined_cs_pre[mfun_defined_cs] := "sh_type=linear"
+ & mfun_prescript_separator & "sh_domain=0 1"
+ & mfun_prescript_separator & "sh_factor=" & decimal shadefactor
+ & mfun_prescript_separator & "sh_color_a=" & colordecimals ca
+ & mfun_prescript_separator & "sh_color_b=" & colordecimals cb
+ & mfun_prescript_separator & "sh_center_a=" & ddecimal (a shifted shadeoffset)
+ & mfun_prescript_separator & "sh_center_b=" & ddecimal (b shifted shadeoffset)
;
- _defined_cs_
+ mfun_defined_cs
enddef ;
primarydef p withshade sc =
- p withprescript _defined_cs_pre_[sc]
+ p withprescript mfun_defined_cs_pre[sc]
enddef ;
vardef define_sampled_linear_shade(expr a,b,n)(text t) =
- _defined_cs_ := _defined_cs_ + 1 ;
- _defined_cs_pre_ [_defined_cs_] := "ssh_type=linear"
- & prescript_separator & "ssh_center_a=" & ddecimal (a shifted shadeoffset)
- & prescript_separator & "ssh_center_b=" & ddecimal (b shifted shadeoffset)
- & prescript_separator & "ssh_nofcolors=" & decimal n
- & prescript_separator & "ssh_domain=" & domstr
- & prescript_separator & "ssh_extend=" & extstr
- & prescript_separator & "ssh_colors=" & colstr
- & prescript_separator & "ssh_bounds=" & bndstr
- & prescript_separator & "ssh_ranges=" & ranstr
+ mfun_defined_cs := mfun_defined_cs + 1 ;
+ mfun_defined_cs_pre[mfun_defined_cs] := "ssh_type=linear"
+ & mfun_prescript_separator & "ssh_center_a=" & ddecimal (a shifted shadeoffset)
+ & mfun_prescript_separator & "ssh_center_b=" & ddecimal (b shifted shadeoffset)
+ & mfun_prescript_separator & "ssh_nofcolors=" & decimal n
+ & mfun_prescript_separator & "ssh_domain=" & domstr
+ & mfun_prescript_separator & "ssh_extend=" & extstr
+ & mfun_prescript_separator & "ssh_colors=" & colstr
+ & mfun_prescript_separator & "ssh_bounds=" & bndstr
+ & mfun_prescript_separator & "ssh_ranges=" & ranstr
;
- _defined_cs_
+ mfun_defined_cs
enddef ;
vardef define_sampled_circular_shade(expr a,b,ra,rb,n)(text t) =
- _defined_cs_ := _defined_cs_ + 1 ;
- _defined_cs_pre_ [_defined_cs_] := "ssh_type=circular"
- & prescript_separator & "ssh_center_a=" & ddecimal (a shifted shadeoffset)
- & prescript_separator & "ssh_radius_a=" & decimal ra
- & prescript_separator & "ssh_center_b=" & ddecimal (b shifted shadeoffset)
- & prescript_separator & "ssh_radius_b=" & decimal rb
- & prescript_separator & "ssh_nofcolors=" & decimal n
- & prescript_separator & "ssh_domain=" & domstr
- & prescript_separator & "ssh_extend=" & extstr
- & prescript_separator & "ssh_colors=" & colstr
- & prescript_separator & "ssh_bounds=" & bndstr
- & prescript_separator & "ssh_ranges=" & ranstr
+ mfun_defined_cs := mfun_defined_cs + 1 ;
+ mfun_defined_cs_pre[mfun_defined_cs] := "ssh_type=circular"
+ & mfun_prescript_separator & "ssh_center_a=" & ddecimal (a shifted shadeoffset)
+ & mfun_prescript_separator & "ssh_radius_a=" & decimal ra
+ & mfun_prescript_separator & "ssh_center_b=" & ddecimal (b shifted shadeoffset)
+ & mfun_prescript_separator & "ssh_radius_b=" & decimal rb
+ & mfun_prescript_separator & "ssh_nofcolors=" & decimal n
+ & mfun_prescript_separator & "ssh_domain=" & domstr
+ & mfun_prescript_separator & "ssh_extend=" & extstr
+ & mfun_prescript_separator & "ssh_colors=" & colstr
+ & mfun_prescript_separator & "ssh_bounds=" & bndstr
+ & mfun_prescript_separator & "ssh_ranges=" & ranstr
;
- _defined_cs_
+ mfun_defined_cs
enddef ;
% vardef predefined_linear_shade (expr p, n, ca, cb) =
@@ -474,45 +474,12 @@ primarydef a shadedinto b =
withprescript "sh_color_b=" & colordecimals b
enddef ;
-% END OF NEW
-
-% Graphic text (we will move code here)
-
-def graphictext primary t =
- if _trial_run_ :
- let dographictextindeed = nographictext ;
- else :
- let dographictextindeed = dographictext ;
- fi
- dographictextindeed(t)
-enddef ;
-
-def dographictext (expr t) =
- % withprescript "gt_stage=final"
- begingroup ;
- save figurepicture ; picture figurepicture ;
- figurepicture := currentpicture ; currentpicture := nullpicture ;
- currentgraphictext := currentgraphictext + 1 ;
- dofinishgraphictext
-enddef ;
-
-def nographictext (expr t) text rest =
- draw unitsquare withprescript "gt_stage=trial" withpostscript t
-enddef ;
-
-% def savegraphictext (expr str) =
-% enddef ;
-
-% def erasegraphictextfile =
-% enddef ;
-
% Layers
def onlayer primary name =
withprescript "la_name=" & name
enddef ;
-
% Figures
% def externalfigure primary filename =
@@ -562,10 +529,10 @@ enddef ;
extra_beginfig := extra_beginfig & "currentgraphictext := 0 ; " ;
extra_endfig := extra_endfig & "finishsavingdata ; " ;
-extra_endfig := extra_endfig & "resettextexts ; " ;
+extra_endfig := extra_endfig & "mfun_reset_tex_texts ; " ;
-boolean cmykcolors ; cmykcolors := true ;
-boolean spotcolors ; spotcolors := true ;
+boolean cmykcolors ; cmykcolors := true ; % are these still used?
+boolean spotcolors ; spotcolors := true ; % are these still used?
% Bonus
@@ -594,7 +561,7 @@ enddef ;
def withproperties expr p =
if colormodel p = 3 :
- withcolor graypart p
+ withcolor greypart p
elseif colormodel p = 5 :
withcolor (redpart p,greenpart p,bluepart p)
elseif colormodel p = 7 :
diff --git a/metapost/context/base/mp-page.mp b/metapost/context/base/mp-page.mpii
index 0c2f41f03..52afacd74 100644
--- a/metapost/context/base/mp-page.mp
+++ b/metapost/context/base/mp-page.mpii
@@ -14,8 +14,7 @@
%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 ;
+if known context_page : endinput ; fi ;
boolean context_page ; context_page := true ;
diff --git a/metapost/context/base/mp-page.mpiv b/metapost/context/base/mp-page.mpiv
new file mode 100644
index 000000000..e9e0be5b0
--- /dev/null
+++ b/metapost/context/base/mp-page.mpiv
@@ -0,0 +1,666 @@
+%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 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 ; % we can move the exit here
+ fi ;
+ exitif ok ;
+ endfor ;
+ ok
+enddef ;
+
+vardef InsideSomeSavedTextArea (expr _xy_) =
+ save ok ; boolean ok ; ok := false ;
+ for i := 1 upto NOfSavedTextAreas :
+ if InsideSavedTextArea(i,_xy_) :
+ ok := true ;
+ fi ;
+ exitif ok ;
+ endfor ;
+ ok
+enddef ;
+
+vardef TextAreaX (expr x) =
+ numeric _TextAreaX_ ; _TextAreaX_ := 0 ;
+ for i := 1 upto NOfTextAreas :
+ if (round(x) >= round(xpart llcorner TextAreas[i])) and
+ (round(x) <= round(xpart lrcorner TextAreas[i])) :
+ _TextAreaX_ := xpart llcorner TextAreas[i] ;
+ fi ;
+ endfor ;
+ _TextAreaX_
+enddef ;
+
+vardef TextAreaY (expr y) =
+ numeric _TextAreaY_ ; _TextAreaY_ := 0 ;
+ for i := 1 upto NOfTextAreas :
+ if (round(y) >= round(ypart llcorner TextAreas[NOfTextAreas])) and
+ (round(y) <= round(ypart ulcorner TextAreas[NOfTextAreas])) :
+ _TextAreaY_ := ypart llcorner TextAreas[NOfTextAreas] ;
+ fi ;
+ endfor ;
+ _TextAreaY_
+enddef ;
+
+vardef TextAreaXY (expr x, y) =
+ pair _TextAreaXY_ ; _TextAreaXY_ := origin ;
+ for i := 1 upto NOfTextAreas :
+ if (round(x) >= round(xpart llcorner TextAreas[i])) and
+ (round(x) <= round(xpart lrcorner TextAreas[i])) and
+ (round(y) >= round(ypart llcorner TextAreas[i])) and
+ (round(y) <= round(ypart ulcorner TextAreas[i])) :
+ _TextAreaXY_ := llconer TextAreas[i] ;
+ fi ;
+ endfor ;
+ _TextAreaXY_
+enddef ;
+
+vardef TextAreaW (expr x) =
+ numeric _TextAreaW_ ; _TextAreaW_ := 0 ;
+ for i := 1 upto NOfTextAreas :
+ if (round(x) >= round(xpart llcorner TextAreas[i])) and
+ (round(x) <= round(xpart lrcorner TextAreas[i])) :
+ _TextAreaW_ := bbwidth(TextAreas[i]) ;
+ fi ;
+ endfor ;
+ _TextAreaW_
+enddef ;
+
+vardef TextAreaH (expr y) =
+ numeric _TextAreaH_ ; _TextAreaH_ := 0 ;
+ for i := 1 upto NOfTextAreas :
+ if (round(y) >= round(ypart llcorner TextAreas[i])) and
+ (round(y) <= round(ypart ulcorner TextAreas[i])) :
+ _TextAreaH_ := bbheight(TextAreas[i]) ;
+ fi ;
+ endfor ;
+ _TextAreaH_
+enddef ;
+
+vardef TextAreaWH (expr x, y) =
+ pair _TextAreaWH_ ; _TextAreaWH_ := origin ;
+ for i := 1 upto NOfTextAreas :
+ if (round(x) >= round(xpart llcorner TextAreas[i])) and
+ (round(x) <= round(xpart lrcorner TextAreas[i])) and
+ (round(y) >= round(ypart llcorner TextAreas[i])) and
+ (round(y) <= round(ypart ulcorner TextAreas[i])) :
+ _TextAreaWH_ := (bbwidth(TextAreas[i]),bbheight(TextAreas[i])) ;
+ fi ;
+ endfor ;
+ _TextAreaWH_
+enddef ;
+
+string CurrentLayout ;
+
+CurrentLayout := "default" ;
+
+PageNumber := 0 ;
+PaperHeight := 845.04684pt ;
+PaperWidth := 597.50787pt ;
+PrintPaperHeight := 845.04684pt ;
+PrintPaperWidth := 597.50787pt ;
+TopSpace := 71.12546pt ;
+BottomSpace := 0.0pt ;
+BackSpace := 71.13275pt ;
+CutSpace := 0.0pt ;
+MakeupHeight := 711.3191pt ;
+MakeupWidth := 426.78743pt ;
+TopHeight := 0.0pt ;
+TopDistance := 0.0pt ;
+HeaderHeight := 56.90294pt ;
+HeaderDistance := 0.0pt ;
+TextHeight := 597.51323pt ;
+FooterDistance := 0.0pt ;
+FooterHeight := 56.90294pt ;
+BottomDistance := 0.0pt ;
+BottomHeight := 0.0pt ;
+LeftEdgeWidth := 0.0pt ;
+LeftEdgeDistance := 0.0pt ;
+LeftMarginWidth := 75.58197pt ;
+LeftMarginDistance := 11.99829pt ;
+TextWidth := 426.78743pt ;
+RightMarginDistance := 11.99829pt ;
+RightMarginWidth := 75.58197pt ;
+RightEdgeDistance := 0.0pt ;
+RightEdgeWidth := 0.0pt ;
+
+PageOffset := 0.0pt ;
+PageDepth := 0.0pt ;
+
+LayoutColumns := 0 ;
+LayoutColumnDistance:= 0.0pt ;
+LayoutColumnWidth := 0.0pt ;
+
+LeftEdge := -4 ; Top := -40 ;
+LeftEdgeSeparator := -3 ; TopSeparator := -30 ;
+LeftMargin := -2 ; Header := -20 ;
+LeftMarginSeparator := -1 ; HeaderSeparator := -10 ;
+Text := 0 ; Text := 0 ;
+RightMarginSeparator := +1 ; FooterSeparator := +10 ;
+RightMargin := +2 ; Footer := +20 ;
+RightEdgeSeparator := +3 ; BottomSeparator := +30 ;
+RightEdge := +4 ; Bottom := +40 ;
+
+Margin := LeftMargin ; % obsolete
+Edge := LeftEdge ; % obsolete
+InnerMargin := RightMargin ; % obsolete
+InnerEdge := RightEdge ; % obsolete
+OuterMargin := LeftMargin ; % obsolete
+OuterEdge := LeftEdge ; % obsolete
+
+InnerMarginWidth := 0pt ;
+OuterMarginWidth := 0pt ;
+InnerMarginDistance := 0pt ;
+OuterMarginDistance := 0pt ;
+
+InnerEdgeWidth := 0pt ;
+OuterEdgeWidth := 0pt ;
+InnerEdgeDistance := 0pt ;
+OuterEdgeDistance := 0pt ;
+
+path Area [][] ; pair Location [][] ; path Field [][] ; 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 ;
+
+% Crop stuff
+
+vardef crop_marks_lines (expr box, length, offset, nx, ny) =
+ save p ; picture p ; save w, h, x, y ; numeric w, h, x, y ;
+ p := image (
+ x := if nx = 0 : 1 else : nx - 1 fi ;
+ y := if ny = 0 : 1 else : ny - 1 fi ;
+ w := bbwidth (box) / x ;
+ h := bbheight(box) / y ;
+ for i=0 upto y :
+ draw ((llcorner box) -- (llcorner box) shifted (-length,0)) shifted (-offset,i*h) ;
+ draw ((lrcorner box) -- (lrcorner box) shifted ( length,0)) shifted ( offset,i*h) ;
+ endfor ;
+ for i=0 upto x :
+ draw ((llcorner box) -- (llcorner box) shifted (0,-length)) shifted (i*w,-offset) ;
+ draw ((ulcorner box) -- (ulcorner box) shifted (0, length)) shifted (i*w, offset) ;
+ endfor ;
+ ) ;
+ setbounds p to box ;
+ p
+enddef ;
+
+vardef crop_marks_cmyk =
+ save p ; picture p ; p := image (
+ fill ulcircle scaled 12.5 withcolor (1,0,0,0) ;
+ fill urcircle scaled 12.5 withcolor (0,1,0,0) ;
+ fill lrcircle scaled 12.5 withcolor (0,0,1,0) ;
+ fill llcircle scaled 12.5 withcolor (0,0,0,1) ;
+ draw (-10,0) -- (10,0) ;
+ draw (0,-10) -- (0,10) ;
+ draw fullcircle scaled 12.5 ;
+ ) ;
+ setbounds p to fullsquare scaled 20 ;
+ p
+enddef ;
+
+vardef crop_marks_gray =
+ save p ; picture p ; p := image (
+ fill ulcircle scaled 12.5 withcolor (0.00) ;
+ fill urcircle scaled 12.5 withcolor (0.25) ;
+ fill lrcircle scaled 12.5 withcolor (0.50) ;
+ fill llcircle scaled 12.5 withcolor (0.75) ;
+ draw (-10,0) -- (10,0) ;
+ draw (0,-10) -- (0,10) ;
+ draw (-6,0) -- (6,0) withcolor white ;
+ draw (0,-6) -- (0,6) withcolor white ;
+ draw fullcircle scaled 12.5 ;
+ ) ;
+ setbounds p to fullsquare scaled 20 ;
+ p
+enddef ;
+
+vardef crop_marks_cmykrgb =
+ save p ; picture p ; p := image (
+ fill ulcircle scaled 15 withcolor (1,0,0) ;
+ fill urcircle scaled 15 withcolor (0,1,0) ;
+ fill lrcircle scaled 15 withcolor (0,0,1) ;
+ fill llcircle scaled 15 withcolor (.5,.5,.5) ;
+ fill ulcircle scaled 10 withcolor (1,0,0,0) ;
+ fill urcircle scaled 10 withcolor (0,1,0,0) ;
+ fill lrcircle scaled 10 withcolor (0,0,1,0) ;
+ fill llcircle scaled 10 withcolor (0,0,0,1) ;
+ draw (-10,0) -- (10,0) ;
+ draw (0,-10) -- (0,10) ;
+ draw fullcircle scaled 10 ;
+ draw fullcircle scaled 15 ;
+ ) ;
+ setbounds p to fullsquare scaled 20 ;
+ p
+enddef ;
+
+vardef crop_color(expr c, h, w, dx, dy, ts) =
+ image (
+ save p ; path p ;
+ for i=1 upto 6 :
+ p := fullsquare
+ xscaled w
+ yscaled h
+ shifted (dx,dy-i*h) ;
+ fill p
+ withcolor (crop_colors[i]*c) ;
+ draw textext("\format{'@0.2f'," & decimal crop_colors[i] & "}")
+ scaled ts
+ shifted center p withcolor white ;
+ endfor ;
+ )
+enddef ;
+
+vardef crop_gray(expr c, h, w, dx, dy, ts) =
+ image (
+ save p ; path p ;
+ for i=.05 step .05 until 1 :
+ p := fullsquare
+ xscaled w
+ yscaled h
+ shifted (20*(i-1)*w+dx,dy) ;
+ fill p
+ withcolor (i*c) ;
+ draw textext("\format{'@0.2f'," & decimal i & "}")
+ scaled ts
+ shifted center p withcolor white ;
+ endfor ;
+ )
+enddef ;
+
+% draw crop_marks_cmyk shifted llcorner more ;
+% draw crop_marks_cmyk shifted lrcorner more ;
+% draw crop_marks_cmyk shifted ulcorner more ;
+% draw crop_marks_cmyk shifted urcorner more ;
+
+def page_marks_add_color(expr width, height, length, offset) = % todo: namespace
+
+ path page ; page := fullsquare xscaled width yscaled height ;
+ path more ; more := page enlarged (offset+length/2,offset+length/2) ;
+
+ numeric crop_colors[] ;
+ crop_colors[1] := 1 ;
+ crop_colors[2] := 0.95 ;
+ crop_colors[3] := 0.75 ;
+ crop_colors[4] := 0.50 ;
+ crop_colors[5] := 0.25 ;
+ crop_colors[6] := 0.05 ;
+
+ numeric h ; h := height / 20 ;
+ numeric w ; w := width / 20 ;
+ numeric d ; d := offset + length/2 ;
+
+ draw crop_color((1,0,0,0),h,length,xpart ulcorner page - d, 10h,length/20) ;
+ draw crop_color((0,1,0,0),h,length,xpart ulcorner page - d,3.5h,length/20) ;
+ draw crop_color((0,0,1,0),h,length,xpart ulcorner page - d, -3h,length/20) ;
+
+ draw crop_color((0,1,1,0),h,length,xpart urcorner page + d, 10h,length/20) ;
+ draw crop_color((1,0,1,0),h,length,xpart urcorner page + d,3.5h,length/20) ;
+ draw crop_color((1,1,0,0),h,length,xpart urcorner page + d, -3h,length/20) ;
+
+ draw crop_gray((0,0,0,1),length, w,-xpart llcorner page,-ypart llcorner page + d ,w/20) ;
+ draw crop_gray((1,0,0,0),length/3,w,-xpart llcorner page, ypart llcorner page - d + 1length/3,w/20) ;
+ draw crop_gray((0,1,0,0),length/3,w,-xpart llcorner page, ypart llcorner page - d - 0length/3,w/20) ;
+ draw crop_gray((0,0,1,0),length/3,w,-xpart llcorner page, ypart llcorner page - d - 1length/3,w/20) ;
+
+ setbounds currentpicture to page ;
+
+enddef ;
+
+def page_marks_add_marking(expr width, height, length, offset) = % todo: namespace
+
+ path page ; page := fullsquare xscaled width yscaled height ;
+ path more ; more := page enlarged (offset+length/2,offset+length/2) ;
+
+ draw crop_marks_gray shifted center(topboundary more) shifted (0, offset+length);
+ draw crop_marks_cmyk shifted center(bottomboundary more) shifted (0,-offset-length);
+
+ setbounds currentpicture to page ;
+
+enddef ;
+
+def page_marks_add_lines(expr width, height, length, offset, nx, ny) = % todo: namespace
+
+ path page ; page := fullsquare xscaled width yscaled height ;
+ path more ; more := page enlarged (offset+length/2,offset+length/2) ;
+
+ draw crop_marks_lines(page,length,offset,nx,ny) ;
+
+ setbounds currentpicture to page ;
+
+enddef ;
+
+def page_marks_add_number(expr width, height, length, offset, n) = % todo: namespace
+
+ path page ; page := fullsquare xscaled width yscaled height ;
+ path more ; more := page enlarged (offset+length/2,offset+length/2) ;
+
+ for s=llcorner more, lrcorner more, ulcorner more, urcorner more :
+ draw textext(decimal n) shifted s ;
+ endfor ;
+
+ setbounds currentpicture to page ;
+
+enddef ;
+
+endinput ;
diff --git a/metapost/context/base/mp-shap.mp b/metapost/context/base/mp-shap.mpii
index 785231278..a551c4419 100644
--- a/metapost/context/base/mp-shap.mp
+++ b/metapost/context/base/mp-shap.mpii
@@ -11,8 +11,7 @@
%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 ;
+if known context_shap : endinput ; fi ;
boolean context_shap ; context_shap := true ;
@@ -145,7 +144,7 @@ def some_shape (expr shape_type, shape_width, shape_height, shape_linewidth, sha
endgroup ;
enddef ;
-vardef drawshape (expr t, p, lw, lc, fc) =
+vardef drawpredefinedshape (expr t, p, lw, lc, fc) =
save pp ;
if t>1 : % normal shape
path pp ;
@@ -163,7 +162,7 @@ vardef drawshape (expr t, p, lw, lc, fc) =
fi ;
enddef ;
-vardef drawline (expr t, p, lw, lc) =
+vardef drawpredefinedline (expr t, p, lw, lc) =
if (t>0) and (length(p)>1) :
saveoptions ;
drawoptions(withpen pencircle scaled lw withcolor lc) ;
@@ -203,4 +202,7 @@ vardef drawline (expr t, p, lw, lc) =
fi ;
enddef ;
+let drawshape = drawpredefinedshape ;
+let drawline = drawpredefinedline ;
+
endinput ;
diff --git a/metapost/context/base/mp-shap.mpiv b/metapost/context/base/mp-shap.mpiv
new file mode 100644
index 000000000..a551c4419
--- /dev/null
+++ b/metapost/context/base/mp-shap.mpiv
@@ -0,0 +1,208 @@
+%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 known context_shap : endinput ; fi ;
+
+boolean context_shap ; context_shap := true ;
+
+path predefined_shapes[] ;
+
+begingroup ;
+
+save xradius, yradius, xxradius, yyradius ;
+save ll, lr, ur, ul, llx, lly, lrx, lry, urx, ury, ulx, uly, llxx, llyy, lrxx, lryy, urxx, uryy, ulxx, ulyy, lc, rc, tc, bc ;
+
+numeric xradius, yradius, xxradius, yyradius ;
+pair ll, lr, ur, ul, llx, lly, lrx, lry, urx, ury, ulx, uly, llxx, llyy, lrxx, lryy, urxx, uryy, ulxx, ulyy, lc, rc, tc, bc ;
+
+xradius := .15 ;
+yradius := .15 ;
+xxradius := .10 ;
+yyradius := .10 ;
+
+ll := llcorner (unitsquare shifted (-.5,-.5)) ;
+lr := lrcorner (unitsquare shifted (-.5,-.5)) ;
+ur := urcorner (unitsquare shifted (-.5,-.5)) ;
+ul := ulcorner (unitsquare shifted (-.5,-.5)) ;
+
+llx := ll shifted (xradius,0) ;
+lly := ll shifted (0,yradius) ;
+
+lrx := lr shifted (-xradius,0) ;
+lry := lr shifted (0,yradius) ;
+
+urx := ur shifted (-xradius,0) ;
+ury := ur shifted (0,-yradius) ;
+
+ulx := ul shifted (xradius,0) ;
+uly := ul shifted (0,-yradius) ;
+
+llxx := ll shifted (xxradius,0) ;
+llyy := ll shifted (0,yyradius) ;
+
+lrxx := lr shifted (-xxradius,0) ;
+lryy := lr shifted (0,yyradius) ;
+
+urxx := ur shifted (-xxradius,0) ;
+uryy := ur shifted (0,-yyradius) ;
+
+ulxx := ul shifted (xxradius,0) ;
+ulyy := ul shifted (0,-yyradius) ;
+
+lc := ll shifted (0,.5) ;
+rc := lr shifted (0,.5) ;
+tc := ul shifted (.5,0) ;
+bc := ll shifted (.5,0) ;
+
+predefined_shapes[ 0] := (origin--cycle) ;
+predefined_shapes[ 5] := (llx--lrx{right}...rc...{left}urx--ulx{left}...lc...{right}cycle) ;
+predefined_shapes[ 6] := (ll--lrx{right}...rc...{left}urx--ul--cycle) ;
+predefined_shapes[ 7] := (ll--lrx{right}...rc...{left}urx--ul--cycle) rotatedaround(origin,180) ;
+predefined_shapes[ 8] := (lr--ury{up}...tc...{down}uly--ll--cycle) ;
+predefined_shapes[ 9] := (lr--ury{up}...tc...{down}uly--ll--cycle) rotatedaround(origin,180) ;
+predefined_shapes[10] := (ll--lr--ur--ul--ll--ur--ul--ll--cycle) ;
+predefined_shapes[11] := (ll--lr--ur--ul--ll--lr--ul--ll--cycle) ;
+predefined_shapes[12] := (ll--lrx--ur--ulx--cycle) ;
+predefined_shapes[13] := (llx--lr--urx--ul--cycle) ;
+predefined_shapes[14] := (lly--bc--lry--ury--tc--uly--cycle) ;
+predefined_shapes[15] := (llx--lrx--rc--urx--ulx--lc--cycle) ;
+predefined_shapes[16] := (ll--lrx--rc--urx--ul--cycle) ;
+predefined_shapes[17] := (ll--lrx--rc--urx--ul--cycle) rotatedaround(origin,180) ;
+predefined_shapes[18] := (lr--ury--tc--uly--ll--cycle) ;
+predefined_shapes[19] := (lr--ury--tc--uly--ll--cycle) rotatedaround(origin,180) ;
+predefined_shapes[20] := (ll--lr--ur--ul--ll--llxx--ulxx--ul--ll--lr--ur--urxx--lrxx--cycle) ;
+predefined_shapes[21] := (ul--ll--lr--ur--ul--ulyy--uryy--ur--ul--ll--lr--lryy--llyy--cycle) ;
+predefined_shapes[22] := (ll--lrx--lry--ur--ulx--uly--cycle) ;
+predefined_shapes[23] := (llx--lr--ury--urx--ul--lly--cycle) ;
+predefined_shapes[24] := (ll--lr--ur--ul--cycle) ;
+predefined_shapes[25] := (llx--lrx--lry--ury--urx--ulx--uly--lly--cycle) ;
+predefined_shapes[26] := (ll--lrx--lry--ur--ul--cycle) ;
+predefined_shapes[27] := (ll--lr--ury--urx--ul--cycle) rotatedaround(origin,180) ;
+predefined_shapes[28] := (ll--lr--ury--urx--ul--cycle) ;
+predefined_shapes[29] := (ll--lrx--lry--ur--ul--cycle) rotatedaround(origin,180) ;
+predefined_shapes[30] := (bc{right}...{up}rc...tc{left}...{down}lc...{right}bc & bc--tc & tc{left}..{down}lc & lc--rc & rc{up}..tc{left}...{down}lc...{right}bc & cycle) rotated 45;
+predefined_shapes[31] := (bc{right}...{up}rc...tc{left}...{down}lc...{right}bc & bc--tc & tc{left}..{down}lc & lc--rc & rc{up}..tc{left}...{down}lc...{right}bc & cycle) ;
+predefined_shapes[32] := (ll{right}...{right}lry--ur--ul--ll--cycle) ;
+predefined_shapes[33] := (ll{right}...{right}lry--ur--ul--ll--cycle--ul--ulx--ulx shifted(0,yyradius)--ur shifted(yyradius,yyradius)--lry shifted(yyradius,yyradius)--lry shifted(0,yyradius)--ur--ul--cycle ) ;
+predefined_shapes[34] := (uly..tc..ury & ury..tc shifted (0,-2yradius)..uly & uly--lly & lly..bc..lry & lry--ury & ury..tc shifted (0,-2yradius)..uly & cycle ) ;
+predefined_shapes[35] := (bc{right}...rc{up}...tc{left}...lc{down}...cycle) ;
+predefined_shapes[36] := (ul--tc{right}..rc{down}..{left}bc--ll & ll..(xpart llx, ypart lc)..ul & cycle) ;
+predefined_shapes[37] := (ul--tc{right}..rc{down}..{left}bc--ll & ll..(xpart llx, ypart lc)..ul & cycle) rotatedaround(origin,180) ;
+predefined_shapes[38] := (ll--lc{up}..tc{right}..{down}rc--lr & lr..(xpart bc, ypart lly)..ll & cycle) ;
+predefined_shapes[39] := (ll--lc{up}..tc{right}..{down}rc--lr & lr..(xpart bc, ypart lly)..ll & cycle) rotatedaround(origin,180) ;
+predefined_shapes[40] := (ll--lr--ur--ul--ll--ur--ul--ll--lr--ul--ll--cycle) ;
+predefined_shapes[41] := (ll--lr--ur--ul--ll--lr--rc--lc--ll--bc--tc--ul--ll & cycle) ;
+predefined_shapes[42] := (ll--lr--origin shifted (+epsilon,0)--ur--ul--origin shifted (-epsilon,0)--cycle) ;
+predefined_shapes[43] := (ll--ul--origin shifted (0,+epsilon)--ur--lr--origin shifted (0,-epsilon)--cycle) ;
+predefined_shapes[45] := (bc--rc--tc--lc--cycle) ;
+predefined_shapes[46] := (ll--ul--rc--cycle) ;
+predefined_shapes[47] := (ll--ul--rc--cycle) rotatedaround(origin,180) ;
+predefined_shapes[48] := (ul--ur--bc--cycle) rotatedaround(origin,180) ;
+predefined_shapes[49] := (ul--ur--bc--cycle) ;
+predefined_shapes[56] := (ll--lry--ury--ul--cycle) ;
+predefined_shapes[57] := (ll--lry--ury--ul--cycle) rotatedaround(origin,180) ;
+predefined_shapes[58] := (ll--ulx--urx--lr--cycle) ;
+predefined_shapes[59] := (ll--ulx--urx--lr--cycle) rotatedaround(origin,180);
+predefined_shapes[66] := (rc--origin shifted ( epsilon,0) --cycle & rc--origin--cycle ) ;
+predefined_shapes[67] := (lc--origin shifted (-epsilon,0) --cycle & lc--origin--cycle ) ;
+predefined_shapes[68] := (tc--origin shifted (0, epsilon) --cycle & tc--origin--cycle ) ;
+predefined_shapes[69] := (bc--origin shifted (0,-epsilon) --cycle & bc--origin--cycle ) ;
+predefined_shapes[75] := (lly--lry--ury--uly--cycle) rotatedaround(origin,180) ;
+predefined_shapes[76] := (ll--lr--ur--uly--cycle) rotatedaround(origin,180) ;
+predefined_shapes[77] := (ll--lr--ury--ul--cycle) rotatedaround(origin,180) ;
+predefined_shapes[78] := (lly--lr--ur--ul--cycle) rotatedaround(origin,180) ;
+predefined_shapes[79] := (ll--lry--ur--ul--cycle) rotatedaround(origin,180) ;
+
+numeric predefined_shapes_xradius ; predefined_shapes_xradius := xradius ;
+numeric predefined_shapes_yradius ; predefined_shapes_yradius := yradius ;
+numeric predefined_shapes_xxradius ; predefined_shapes_xxradius := xxradius ;
+numeric predefined_shapes_yyradius ; predefined_shapes_yyradius := yyradius ;
+
+endgroup ;
+
+vardef some_shape_path (expr type) =
+ if known predefined_shapes[type] : predefined_shapes[type] else : predefined_shapes[0] fi
+enddef ;
+
+def some_shape (expr shape_type, shape_width, shape_height, shape_linewidth, shape_linecolor, shape_fillcolor) =
+ begingroup ;
+ save p ; path p ;
+ p := some_shape_path (shape_type) xscaled shape_width yscaled shape_height ;
+ pickup pencircle scaled shape_linewidth ;
+ fill p withcolor shape_fillcolor ;
+ draw p withcolor shape_linecolor ;
+ endgroup ;
+enddef ;
+
+vardef drawpredefinedshape (expr t, p, lw, lc, fc) =
+ save pp ;
+ if t>1 : % normal shape
+ path pp ;
+ pp := some_shape_path(t) xyscaled(bbwidth(p), bbheight(p)) shifted center p ;
+ fill pp withcolor fc ;
+ draw pp withpen pencircle scaled lw withcolor lc ;
+ elseif t=1 : % background only
+ path pp ;
+ pp := fullsquare xyscaled(bbwidth(p), bbheight(p)) shifted center p ;
+ fill pp withcolor fc ;
+ else : % dimensions only
+ picture pp ; pp := nullpicture ;
+ setbounds pp to fullsquare xyscaled(bbwidth(p), bbheight(p)) shifted center p ;
+ draw pp ;
+ fi ;
+enddef ;
+
+vardef drawpredefinedline (expr t, p, lw, lc) =
+ if (t>0) and (length(p)>1) :
+ saveoptions ;
+ drawoptions(withpen pencircle scaled lw withcolor lc) ;
+ draw p ;
+ if t = 1 :
+ draw arrowheadonpath(p,1) ;
+ elseif t = 2 :
+ draw arrowheadonpath(reverse p,1) ;
+ elseif t = 3 :
+ for $ = p,reverse p :
+ draw arrowheadonpath($,1) ;
+ endfor ;
+ elseif t = 11 :
+ draw arrowheadonpath(p,1/2) ;
+ elseif t = 12 :
+ draw arrowheadonpath(reverse p,1/2) ;
+ elseif t = 13 :
+ for $=p,reverse p :
+ draw arrowheadonpath($,1) ;
+ endfor ;
+ for $=p,reverse p :
+ draw arrowheadonpath($,3/4) ;
+ endfor ;
+ elseif t = 21 :
+ for $=1/5,1/2,4/5 :
+ draw arrowheadonpath(p,$) ;
+ endfor ;
+ elseif t = 22 :
+ for $=1/5,1/2,4/5 :
+ draw arrowheadonpath(reverse p,$) ;
+ endfor ;
+ elseif t = 23 :
+ for $=p,reverse p :
+ draw arrowheadonpath($,1/4) ;
+ endfor ;
+ fi ;
+ fi ;
+enddef ;
+
+let drawshape = drawpredefinedshape ;
+let drawline = drawpredefinedline ;
+
+endinput ;
diff --git a/metapost/context/base/mp-spec.mpii b/metapost/context/base/mp-spec.mpii
index 123e75faa..25e435edb 100644
--- a/metapost/context/base/mp-spec.mpii
+++ b/metapost/context/base/mp-spec.mpii
@@ -47,9 +47,8 @@
%D for instance shading. More information can be found in
%D type {supp-mpe.tex}.
-if known mplib : endinput ; fi ;
-if unknown context_tool : input mp-tool ; fi ;
-if known context_spec : endinput ; fi ;
+if known mplib : endinput ; fi ;
+if known context_spec : endinput ; fi ;
boolean context_spec ; context_spec := true ;
diff --git a/metapost/context/base/mp-step.mpii b/metapost/context/base/mp-step.mpii
index d602f7014..ad6f7bde0 100644
--- a/metapost/context/base/mp-step.mpii
+++ b/metapost/context/base/mp-step.mpii
@@ -11,8 +11,7 @@
%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 ;
+if known context_step : endinput ; fi ;
boolean context_step ; context_step := true ;
@@ -39,7 +38,7 @@ enddef ;
def analyze_step_chart =
numeric n[], l[][], r[][] ; pair p[] ;
- n[t] := n[b] := 0 ; numeric tb ;
+ 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 ;
@@ -80,15 +79,15 @@ vardef get_step_chart_top_line (expr i, j) =
p[3] := p[3] shifted (0,+line_v_offset) ;
(p[1] {up} ... p[2] ... {down} p[3])
else :
- origin
- fi
+ origin
+ fi
else :
- origin
- fi
+ origin
+ fi
else :
- origin
- fi
-enddef ;
+ origin
+ fi
+enddef ;
vardef get_step_chart_bot_line (expr i, j) =
if bbwidth(cells[b][i])>0 :
@@ -108,31 +107,31 @@ vardef get_step_chart_bot_line (expr i, j) =
p[3] := p[3] shifted (0,-line_v_offset) ;
(p[1] {down} ... p[2] ... {up} p[3])
else :
- origin
- fi
+ origin
+ fi
else :
- origin
- fi
+ origin
+ fi
else :
- origin
- fi
+ 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 ;
+ 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 :
+ 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 ;
+ 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.
+%D Step tables.
def begin_step_table =
initialize_step_variables ;
@@ -141,13 +140,13 @@ def begin_step_table =
enddef ;
def end_step_table =
- for i=1 upto nofcells : if known cells[i] : if bbwidth(cells[i])>0 :
- draw cells[i] ;
+ 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] ;
+ 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 :
+ for i=1 upto nofcells : if known texts[i] : if bbwidth(texts[i])>0 :
draw texts[i] ;
fi ; fi ; endfor ;
enddef ;
diff --git a/metapost/context/base/mp-step.mpiv b/metapost/context/base/mp-step.mpiv
index dbbc38231..21a20ce71 100644
--- a/metapost/context/base/mp-step.mpiv
+++ b/metapost/context/base/mp-step.mpiv
@@ -11,8 +11,9 @@
%C therefore copyrighted by \PRAGMA. See licen-en.pdf for
%C details.
-if unknown context_tool : input mp-tool ; fi ;
-if known context_cell : endinput ; fi ;
+% step prefixes .. no save needed
+
+if known context_cell : endinput ; fi ;
boolean context_cell ; context_cell := true ;
diff --git a/metapost/context/base/mp-text.mp b/metapost/context/base/mp-text.mpii
index 60e16c09b..67dff15f9 100644
--- a/metapost/context/base/mp-text.mp
+++ b/metapost/context/base/mp-text.mpii
@@ -13,8 +13,7 @@
%D Under construction.
-if unknown context_tool : input mp-tool ; fi ;
-if known context_text : endinput ; fi ;
+if known context_text : endinput ; fi ;
boolean context_text ; context_text := true ;
diff --git a/metapost/context/base/mp-text.mpiv b/metapost/context/base/mp-text.mpiv
new file mode 100644
index 000000000..c7bafeb8a
--- /dev/null
+++ b/metapost/context/base/mp-text.mpiv
@@ -0,0 +1,163 @@
+%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 This one is only used in metafun so it will become a module.
+
+if known context_text : endinput ; fi ;
+
+boolean context_text ; context_text := true ;
+
+def build_parshape (expr p, offset_or_path, dx, dy, baselineskip, strutheight, strutdepth, topskip) =
+
+ if unknown trace_parshape :
+ boolean trace_parshape ; trace_parshape := false ;
+ fi ;
+
+ begingroup ;
+
+ save
+ q, l, r, line, tt, bb,
+ n, hsize, vsize, vvsize, voffset, hoffset, width, indent,
+ ll, lll, rr, rrr, cp, cq, t, b ;
+
+ path
+ q, l, r, line, tt, bb ;
+ numeric
+ n, hsize, vsize, vvsize, voffset, hoffset, width[], indent[] ;
+ pair
+ ll, lll, rr, rrr, cp, cq, t, b ;
+
+ n := 0 ;
+ cp := center p ;
+
+ if path offset_or_path :
+ q := offset_or_path ;
+ cq := center q ;
+ voffset := dy ;
+ hoffset := dx ;
+ else :
+ q := p ;
+ cq := center q ;
+ hoffset := offset_or_path + dx ;
+ voffset := offset_or_path + dy ;
+ fi ;
+
+ hsize := xpart lrcorner q - xpart llcorner q ;
+ vsize := ypart urcorner q - ypart lrcorner q ;
+
+ q := p shifted - cp ;
+
+ startsavingdata ;
+
+ savedata "\global\parvoffset " & decimal voffset&"bp " ;
+ savedata "\global\parhoffset " & decimal hoffset&"bp " ;
+ savedata "\global\parwidth " & decimal hsize&"bp " ;
+ savedata "\global\parheight " & decimal vsize&"bp " ;
+
+ if not path offset_or_path :
+ q := q xscaled ((hsize-2hoffset)/hsize) yscaled ((vsize-2voffset)/vsize) ;
+ fi ;
+
+ hsize := xpart lrcorner q - xpart llcorner q ;
+ vsize := ypart urcorner q - ypart lrcorner q ;
+
+ t := (ulcorner q -- urcorner q) intersection_point q ;
+ b := (llcorner q -- lrcorner q) intersection_point q ;
+
+ if xpart directionpoint t of q < 0 :
+ q := reverse q ;
+ fi ;
+
+ l := q cutbefore t ;
+ l := l if xpart point 0 of q < 0 : & q fi cutafter b ;
+
+ r := q cutbefore b ;
+ r := r if xpart point 0 of q > 0 : & q fi cutafter t ;
+
+ % tt := (ulcorner q -- urcorner q) shifted (0,-topskip) ;
+ % bb := (llcorner q -- lrcorner q) shifted (0,strutdepth) ;
+
+ % l := l cutbefore (l intersection_point tt) ;
+ % l := l cutafter (l intersection_point bb) ;
+ % r := r cutbefore (r intersection_point bb) ;
+ % r := r cutafter (r intersection_point tt) ;
+
+ if trace_parshape :
+ drawarrow p withpen pencircle scaled 2pt withcolor red ;
+ drawarrow l shifted cp withpen pencircle scaled 1pt withcolor green ;
+ drawarrow r shifted cp withpen pencircle scaled 1pt withcolor blue ;
+ fi ;
+
+ vardef found_point (expr lin, pat, sig) =
+ pair a, b ;
+ a := pat intersection_point (lin shifted (0,strutheight)) ;
+ if intersection_found :
+ a := a shifted (0,-strutheight) ;
+ else :
+ a := pat intersection_point lin ;
+ fi ;
+ b := pat intersection_point (lin shifted (0,-strutdepth)) ;
+ if intersection_found :
+ if sig :
+ if xpart b > xpart a : a := b shifted (0,strutdepth) fi ;
+ else :
+ if xpart b < xpart a : a := b shifted (0,strutdepth) fi ;
+ fi ;
+ fi ;
+ a
+ enddef ;
+
+ if (strutheight+strutdepth<baselineskip) :
+ vvsize := vsize ;
+ else :
+ vvsize := (vsize div baselineskip) * baselineskip ;
+ fi ;
+
+ for i=topskip step baselineskip until vvsize :
+
+ line := (ulcorner q -- urcorner q) shifted (0,-i-eps) ;
+
+ ll := found_point(line,l,true ) ;
+ rr := found_point(line,r,false) ;
+
+ if trace_parshape :
+ fill (ll--rr--rr shifted (0,strutheight)--ll shifted (0,strutheight)--cycle) shifted cp withcolor .5white ;
+ fill (ll--rr--rr shifted (0,-strutdepth)--ll shifted (0,-strutdepth)--cycle) shifted cp withcolor .7white ;
+ draw ll shifted cp withpen pencircle scaled 2pt ;
+ draw rr shifted cp withpen pencircle scaled 2pt ;
+ draw (ll--rr) shifted cp withpen pencircle scaled .5pt ;
+ fi ;
+
+ n := n + 1 ;
+ indent[n] := abs(xpart ll - xpart llcorner q) ;
+ width[n] := abs(xpart rr - xpart ll) ;
+
+ if (i=strutheight) and (width[n]<baselineskip) :
+ n := n - 1 ;
+ savedata "\global\chardef\parfirst=1 " ;
+ fi ;
+
+ endfor ;
+
+ savedata "\global\parlines " & decimal n ;
+ savedata "\global\partoks{ " ;
+ for i=1 upto n:
+ savedata decimal indent[i]&"bp " & decimal width[i]&"bp " ;
+ endfor ;
+ savedata "}" ;
+
+ stopsavingdata ;
+
+ endgroup ;
+
+enddef ;
diff --git a/metapost/context/base/mp-tool.mp b/metapost/context/base/mp-tool.mpii
index 1a758a963..7b46c4725 100644
--- a/metapost/context/base/mp-tool.mp
+++ b/metapost/context/base/mp-tool.mpii
@@ -85,10 +85,6 @@ mpprocset := 1 ;
%
% 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.
@@ -96,8 +92,6 @@ string semicolor ; semicolor := char 59 ;
% 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 =
diff --git a/metapost/context/base/mp-tool.mpiv b/metapost/context/base/mp-tool.mpiv
new file mode 100644
index 000000000..04d987c8d
--- /dev/null
+++ b/metapost/context/base/mp-tool.mpiv
@@ -0,0 +1,2145 @@
+%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.
+
+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
+
+% no longer needed as we load runtime
+
+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 ;
+
+string space ; space := char 32 ;
+string CRLF ; CRLF := char 10 & char 13 ;
+
+vardef ddecimal primary p =
+ decimal xpart p & " " & decimal ypart p
+enddef ;
+
+%D Colors:
+
+newinternal nocolormodel ; nocolormodel := 1 ;
+newinternal greycolormodel ; greycolormodel := 3 ;
+newinternal graycolormodel ; graycolormodel := 3 ;
+newinternal rgbcolormodel ; rgbcolormodel := 5 ;
+newinternal cmykcolormodel ; cmykcolormodel := 7 ;
+
+let grayscale = numeric ;
+let greyscale = numeric ;
+
+vardef colorpart expr c =
+ if not picture c :
+ 0
+ elseif colormodel c = greycolormodel :
+ greypart c
+ elseif colormodel c = rgbcolormodel :
+ (redpart c,greenpart c,bluepart c)
+ elseif colormodel c = cmykcolormodel :
+ (cyanpart c,magentapart c,yellowpart c,blackpart c)
+ else :
+ 0 % black
+ fi
+enddef ;
+
+vardef colorlike(text c) text v = % colorlike(a) b, c, d ;
+ save _p_ ; picture _p_ ;
+ forsuffixes i=v :
+ _p_ := image(draw origin withcolor c ;) ; % intercept pre and postscripts
+ if (colormodel _p_ = cmykcolormodel) :
+ cmykcolor i ;
+ elseif (colormodel _p_ = rgbcolormodel) :
+ rgbcolor i ;
+ else :
+ greycolor i ;
+ fi ;
+ endfor ;
+enddef ;
+
+%D Also handy (when we flush colors):
+
+vardef dddecimal primary c =
+ decimal redpart c & " " & decimal greenpart c & " " & decimal bluepart c
+enddef ;
+
+vardef ddddecimal primary c =
+ decimal cyanpart c & " " & decimal magentapart c & " " & decimal yellowpart c & " " & decimal blackpart c
+enddef ;
+
+vardef colordecimals primary c =
+ if cmykcolor c :
+ decimal cyanpart c & ":" & decimal magentapart c & ":" & decimal yellowpart c & ":" & decimal blackpart c
+ elseif rgbcolor c :
+ decimal redpart c & ":" & decimal greenpart c & ":" & decimal bluepart c
+ else :
+ decimal c
+ fi
+enddef ;
+
+%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 =
+ write if collapse_data :
+ txt
+ else :
+ if savingdata : txt else : "\MPdata{" & decimal charcode & "}{" & txt & "}" fi & "%"
+ fi to data_mpd_file ;
+enddef ;
+
+def startsavingdata =
+ savingdata := true ;
+ savingdatadone := true ;
+ if collapse_data :
+ write "\MPdata{" & decimal charcode & "}{%" to data_mpd_file ;
+ fi ;
+enddef ;
+
+def stopsavingdata =
+ if collapse_data :
+ write "}%" to data_mpd_file ;
+ fi ;
+ savingdata := false ;
+enddef ;
+
+def finishsavingdata =
+ if savingdatadone :
+ write EOF to data_mpd_file ;
+ savingdatadone := false ;
+ fi ;
+enddef ;
+
+%D Instead of a keystroke eating save and allocation
+%D sequence, you can use the \citeer {new} alternatives to
+%D save and allocate in one command.
+
+def newcolor text v = forsuffixes i=v : save i ; color i ; endfor ; enddef ;
+def newnumeric text v = forsuffixes i=v : save i ; numeric i ; endfor ; enddef ;
+def newboolean text v = forsuffixes i=v : save i ; boolean i ; endfor ; enddef ;
+def newtransform text v = forsuffixes i=v : save i ; transform i ; endfor ; enddef ;
+def newpath text v = forsuffixes i=v : save i ; path i ; endfor ; enddef ;
+def newpicture text v = forsuffixes i=v : save i ; picture i ; endfor ; enddef ;
+def newstring text v = forsuffixes i=v : save i ; string i ; endfor ; enddef ;
+def newpair text v = forsuffixes i=v : save i ; pair i ; endfor ; enddef ;
+
+%D Sometimes we don't want parts of the graphics add to the
+%D bounding box. One way of doing this is to save the bounding
+%D box, draw the graphics that may not count, and restore the
+%D bounding box.
+%D
+%D \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 mfun_boundingbox_stack ;
+numeric mfun_boundingbox_stack_depth ;
+
+mfun_boundingbox_stack_depth := 0 ;
+
+def pushboundingbox text p =
+ mfun_boundingbox_stack_depth := mfun_boundingbox_stack_depth + 1 ;
+ mfun_boundingbox_stack[mfun_boundingbox_stack_depth] := boundingbox p ;
+enddef ;
+
+def popboundingbox text p =
+ setbounds p to mfun_boundingbox_stack[mfun_boundingbox_stack_depth] ;
+ mfun_boundingbox_stack[mfun_boundingbox_stack_depth] := origin ;
+ mfun_boundingbox_stack_depth := mfun_boundingbox_stack_depth - 1 ;
+enddef ;
+
+let push_boundingbox = pushboundingbox ; % downward compatible
+let pop_boundingbox = popboundingbox ; % downward compatible
+
+vardef boundingbox primary p =
+ if (path p) or (picture p) :
+ llcorner p -- lrcorner p -- urcorner p -- ulcorner p
+ else :
+ origin
+ fi -- cycle
+enddef;
+
+vardef innerboundingbox primary p =
+ top rt llcorner p --
+ top lft lrcorner p --
+ bot lft urcorner p --
+ bot rt ulcorner p -- cycle
+enddef;
+
+vardef outerboundingbox primary p =
+ bot lft llcorner p --
+ bot rt lrcorner p --
+ top rt urcorner p --
+ top lft ulcorner p -- cycle
+enddef;
+
+def inner_boundingbox = innerboundingbox enddef ;
+def outer_boundingbox = outerboundingbox enddef ;
+
+vardef set_inner_boundingbox text q = % obsolete
+ setbounds q to innerboundingbox q;
+enddef;
+
+vardef set_outer_boundingbox text q = % obsolete
+ setbounds q to outerboundingbox q;
+enddef;
+
+%D Some missing functions can be implemented rather
+%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 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:
+
+% to be redone: use image
+
+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:
+
+primarydef p xsized w =
+ (p if (bbwidth (p)>0) and (w>0) : scaled (w/bbwidth (p)) fi)
+enddef ;
+
+primarydef p ysized h =
+ (p if (bbheight(p)>0) and (h>0) : scaled (h/bbheight(p)) fi)
+enddef ;
+
+primarydef p xysized s =
+ begingroup
+ save wh, w, h ; pair wh ; numeric w, h ;
+ wh := paired (s) ; w := bbwidth(p) ; h := bbheight(p) ;
+ p
+ if (w>0) and (h>0) :
+ if xpart wh > 0 : xscaled (xpart wh/w) fi
+ if ypart wh > 0 : yscaled (ypart wh/h) fi
+ fi
+ endgroup
+enddef ;
+
+let sized = xysized ;
+
+def xscale_currentpicture(expr w) = % obsolete
+ currentpicture := currentpicture xsized w ;
+enddef;
+
+def yscale_currentpicture(expr h) = % obsolete
+ currentpicture := currentpicture ysized h ;
+enddef;
+
+def xyscale_currentpicture(expr w, h) = % obsolete
+ currentpicture := currentpicture xysized (w,h) ;
+enddef;
+
+def scale_currentpicture(expr w, h) = % obsolete
+ currentpicture := currentpicture xsized w ;
+ currentpicture := currentpicture ysized h ;
+enddef;
+
+%D A full circle is centered at the origin, while a unitsquare
+%D is located in the first quadrant. Now guess what kind of
+%D path fullsquare and unitcircle do return.
+
+path fullsquare, unitcircle ;
+
+fullsquare := unitsquare shifted - center unitsquare ;
+unitcircle := fullcircle shifted urcorner fullcircle ;
+
+%D Some more paths:
+
+path urcircle, ulcircle, llcircle, lrcircle ;
+
+urcircle := origin -- (+.5,0) & (+.5,0){up} .. (0,+.5) & (0,+.5) -- cycle ;
+ulcircle := origin -- (0,+.5) & (0,+.5){left} .. (-.5,0) & (-.5,0) -- cycle ;
+llcircle := origin -- (-.5,0) & (-.5,0){down} .. (0,-.5) & (0,-.5) -- cycle ;
+lrcircle := origin -- (0,-.5) & (0,-.5){right} .. (+.5,0) & (+.5,0) -- cycle ;
+
+path tcircle, bcircle, lcircle, rcircle ;
+
+tcircle = origin -- (+.5,0) & (+.5,0) {up} .. (0,+.5) .. {down} (-.5,0) -- cycle ;
+bcircle = origin -- (-.5,0) & (-.5,0) {down} .. (0,-.5) .. {up} (+.5,0) -- cycle ;
+lcircle = origin -- (0,+.5) & (0,+.5) {left} .. (-.5,0) .. {right} (0,-.5) -- cycle ;
+rcircle = origin -- (0,-.5) & (0,-.5) {right} .. (+.5,0) .. {left} (0,+.5) -- cycle ;
+
+path urtriangle, ultriangle, lltriangle, lrtriangle ;
+
+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 = % secundarydef does not work out well
+ begingroup
+ save qq ; pair qq ;
+ qq = paired(q) ;
+ p
+ if xpart qq <> 0 : xscaled (xpart qq) fi
+ if ypart qq <> 0 : yscaled (ypart qq) fi
+ endgroup
+enddef ;
+
+%D Some personal code that might move to another module
+
+def set_grid(expr w, h, nx, ny) =
+ boolean grid[][] ; boolean grid_full ;
+ numeric grid_w, grid_h, grid_nx, grid_ny, grid_x, grid_y, grid_left ;
+ grid_w := w ;
+ grid_h := h ;
+ grid_nx := nx ;
+ grid_ny := ny ;
+ grid_x := round(w/grid_nx) ; % +.5) ;
+ grid_y := round(h/grid_ny) ; % +.5) ;
+ grid_left := (1+grid_x)*(1+grid_y) ;
+ grid_full := false ;
+ for i=0 upto grid_x :
+ for j=0 upto grid_y :
+ grid[i][j] := false ;
+ endfor ;
+ endfor ;
+enddef ;
+
+vardef new_on_grid(expr _dx_, _dy_) =
+ dx := _dx_ ;
+ dy := _dy_ ;
+ ddx := min(round(dx/grid_nx),grid_x) ; % +.5),grid_x) ;
+ ddy := min(round(dy/grid_ny),grid_y) ; % +.5),grid_y) ;
+ if not grid_full and not grid[ddx][ddy] :
+ grid[ddx][ddy] := true ;
+ grid_left := grid_left-1 ;
+ grid_full := (grid_left=0) ;
+ true
+ else :
+ false
+ fi
+enddef ;
+
+%D usage: \type{innerpath peepholed outerpath}.
+%D
+%D beginfig(1);
+%D def fullsquare = (unitsquare shifted -center unitsquare) enddef ;
+%D fill (fullsquare scaled 200) withcolor red ;
+%D path p ; p := (fullcircle scaled 100) ; bboxmargin := 0 ;
+%D fill p peepholed bbox p ;
+%D endfig;
+
+secondarydef p peepholed q =
+ begingroup
+ save start ; pair start ;
+ start := point 0 of p ;
+ if xpart start >= xpart center p :
+ if ypart start >= ypart center p :
+ urcorner q -- ulcorner q -- llcorner q -- lrcorner q --
+ reverse p -- lrcorner q -- cycle
+ else :
+ lrcorner q -- urcorner q -- ulcorner q -- llcorner q --
+ reverse p -- llcorner q -- cycle
+ fi
+ else :
+ if ypart start > ypart center p :
+ ulcorner q -- llcorner q -- lrcorner q -- urcorner q --
+ reverse p -- urcorner q -- cycle
+ else :
+ llcorner q -- lrcorner q -- urcorner q -- ulcorner q --
+ reverse p -- ulcorner q -- cycle
+ fi
+ fi
+ endgroup
+enddef ;
+
+boolean intersection_found ;
+
+secondarydef p intersection_point q =
+ begingroup
+ save x_, y_ ;
+ (x_,y_) = p intersectiontimes q ;
+ if x_<0 :
+ intersection_found := false ;
+ center p % origin
+ else :
+ intersection_found := true ;
+ .5[point x_ of p, point y_ of q]
+ fi
+ endgroup
+enddef ;
+
+%D New, undocumented, experimental:
+
+vardef tensecircle (expr width, height, offset) =
+ (-width/2,-height/2) ... (0,-height/2-offset) ...
+ (+width/2,-height/2) ... (+width/2+offset,0) ...
+ (+width/2,+height/2) ... (0,+height/2+offset) ...
+ (-width/2,+height/2) ... (-width/2-offset,0) ... cycle
+enddef ;
+
+vardef roundedsquare (expr width, height, offset) =
+ (offset,0) -- (width-offset,0) {right} ..
+ (width,offset) -- (width,height-offset) {up} ..
+ (width-offset,height) -- (offset,height) {left} ..
+ (0,height-offset) -- (0,offset) {down} .. cycle
+enddef ;
+
+%D Some colors.
+
+def colortype(expr c) =
+ if cmykcolor c : cmykcolor elseif rgbcolor c : rgbcolor else : grayscale fi
+enddef ;
+
+vardef whitecolor(expr c) =
+ if cmykcolor c : (0,0,0,0) elseif rgbcolor c : (1,1,1) else : 1 fi
+enddef ;
+
+vardef blackcolor(expr c) =
+ if cmykcolor c : (0,0,0,1) elseif rgbcolor c : (0,0,0) else : 0 fi
+enddef ;
+
+%D Well, this is the dangerous and naive version:
+
+def drawfill text t =
+ fill t ;
+ draw t ;
+enddef;
+
+%D This two step approach saves the path first, since it can
+%D be a function. Attributes must not be randomized.
+
+def drawfill expr c =
+ path _c_ ; _c_ := c ;
+ mfun_do_drawfill
+enddef ;
+
+def mfun_do_drawfill text t =
+ draw _c_ t ;
+ fill _c_ t ;
+enddef;
+
+def undrawfill expr c =
+ drawfill c withcolor background % rather useless
+enddef ;
+
+%D Moved from mp-char.mp
+
+vardef paired primary d =
+ if pair d : d else : (d,d) fi
+enddef ;
+
+vardef tripled primary d =
+ if color d : d else : (d,d,d) fi
+enddef ;
+
+% maybe secondaries:
+
+primarydef p enlarged d = ( p llmoved d -- p lrmoved d -- p urmoved d -- p ulmoved d -- cycle ) enddef ;
+primarydef p llenlarged d = ( p llmoved d -- lrcorner p -- urcorner p -- ulcorner p -- cycle ) enddef ;
+primarydef p lrenlarged d = ( llcorner p -- p lrmoved d -- urcorner p -- ulcorner p -- cycle ) enddef ;
+primarydef p urenlarged d = ( llcorner p -- lrcorner p -- p urmoved d -- ulcorner p -- cycle ) enddef ;
+primarydef p ulenlarged d = ( llcorner p -- lrcorner p -- urcorner p -- p ulmoved d -- cycle ) enddef ;
+
+primarydef p llmoved d = ( (llcorner p) shifted (-xpart paired(d),-ypart paired(d)) ) enddef ;
+primarydef p lrmoved d = ( (lrcorner p) shifted (+xpart paired(d),-ypart paired(d)) ) enddef ;
+primarydef p urmoved d = ( (urcorner p) shifted (+xpart paired(d),+ypart paired(d)) ) enddef ;
+primarydef p ulmoved d = ( (ulcorner p) shifted (-xpart paired(d),+ypart paired(d)) ) enddef ;
+
+primarydef p leftenlarged d = ( (llcorner p) shifted (-d,0) -- lrcorner p -- urcorner p -- (ulcorner p) shifted (-d,0) -- cycle ) enddef ;
+primarydef p rightenlarged d = ( llcorner p -- (lrcorner p) shifted (d,0) -- (urcorner p) shifted (d,0) -- ulcorner p -- cycle ) enddef ;
+primarydef p topenlarged d = ( llcorner p -- lrcorner p -- (urcorner p) shifted (0,d) -- (ulcorner p) shifted (0,d) -- cycle ) enddef ;
+primarydef p bottomenlarged d = ( llcorner p shifted (0,-d) -- lrcorner p shifted (0,-d) -- urcorner p -- ulcorner p -- cycle ) enddef ;
+
+%D Handy for testing/debugging:
+
+primarydef p crossed d = (
+ if pair p :
+ p shifted (-d, 0) -- p --
+ p shifted ( 0,-d) -- p --
+ p shifted (+d, 0) -- p --
+ p shifted ( 0,+d) -- p -- cycle
+ else :
+ center p shifted (-d, 0) -- llcorner p --
+ center p shifted ( 0,-d) -- lrcorner p --
+ center p shifted (+d, 0) -- urcorner p --
+ center p shifted ( 0,+d) -- ulcorner p -- cycle
+ fi
+) enddef ;
+
+%D Also handy (math ladders):
+
+vardef laddered primary p = % was expr
+ point 0 of p
+ for i=1 upto length(p) :
+ -- (xpart (point i of p), ypart (point (i-1) of p)) -- (point i of p)
+ endfor
+enddef ;
+
+%D Saves typing:
+
+% vardef bottomboundary primary p = (llcorner p -- lrcorner p) enddef ;
+% vardef rightboundary primary p = (lrcorner p -- urcorner p) enddef ;
+% vardef topboundary primary p = (urcorner p -- ulcorner p) enddef ;
+% vardef leftboundary primary p = (ulcorner p -- llcorner p) enddef ;
+
+vardef bottomboundary primary p = if pair p : p else : (llcorner p -- lrcorner p) fi enddef ;
+vardef rightboundary primary p = if pair p : p else : (lrcorner p -- urcorner p) fi enddef ;
+vardef topboundary primary p = if pair p : p else : (urcorner p -- ulcorner p) fi enddef ;
+vardef leftboundary primary p = if pair p : p else : (ulcorner p -- llcorner p) fi enddef ;
+
+%D Nice too:
+
+primarydef p superellipsed s =
+ superellipse (
+ .5[lrcorner p,urcorner p],
+ .5[urcorner p,ulcorner p],
+ .5[ulcorner p,llcorner p],
+ .5[llcorner p,lrcorner p],
+ s
+ )
+enddef ;
+
+primarydef p squeezed s = (
+ (llcorner p .. .5[llcorner p,lrcorner p] shifted ( 0, ypart paired(s)) .. lrcorner p) &
+ (lrcorner p .. .5[lrcorner p,urcorner p] shifted (-xpart paired(s), 0) .. urcorner p) &
+ (urcorner p .. .5[urcorner p,ulcorner p] shifted ( 0,-ypart paired(s)) .. ulcorner p) &
+ (ulcorner p .. .5[ulcorner p,llcorner p] shifted ( xpart paired(s), 0) .. llcorner p) & cycle
+) enddef ;
+
+primarydef p randomshifted s =
+ begingroup ;
+ save ss ; pair ss ;
+ ss := paired(s) ;
+ p shifted (-.5xpart ss + uniformdeviate xpart ss,-.5ypart ss + uniformdeviate ypart ss)
+ endgroup
+enddef ;
+
+primarydef p randomized s = (
+ if path p :
+ for i=0 upto length(p)-1 :
+ ((point i of p) randomshifted s) .. controls
+ ((postcontrol i of p) randomshifted s) and
+ ((precontrol (i+1) of p) randomshifted s) ..
+ endfor
+ if cycle p :
+ cycle
+ else :
+ ((point length(p) of p) randomshifted s)
+ fi
+ elseif pair p :
+ p randomshifted s
+ elseif cmykcolor p :
+ if color s :
+ (uniformdeviate cyanpart s * cyanpart p,
+ uniformdeviate magentapart s * magentapart p,
+ uniformdeviate yellowpart s * yellowpart p,
+ uniformdeviate blackpart s * blackpart p)
+ elseif pair s :
+ ((xpart s + uniformdeviate (ypart s - xpart s)) * p)
+ else :
+ (uniformdeviate s * p)
+ fi
+ elseif rgbcolor p :
+ if color s :
+ (uniformdeviate redpart s * redpart p,
+ uniformdeviate greenpart s * greenpart p,
+ uniformdeviate bluepart s * bluepart p)
+ elseif pair s :
+ ((xpart s + uniformdeviate (ypart s - xpart s)) * p)
+ else :
+ (uniformdeviate s * p)
+ fi
+ elseif color p :
+ if color s :
+ (uniformdeviate greypart s * greypart p)
+ elseif pair s :
+ ((xpart s + uniformdeviate (ypart s - xpart s)) * p)
+ else :
+ (uniformdeviate s * p)
+ fi
+ else :
+ p + uniformdeviate s
+ fi
+) enddef ;
+
+%D Not perfect (alternative for interpath)
+
+vardef interpolated(expr s, p, q) =
+ save m ; numeric m ;
+ m := max(length(p),length(q)) ;
+ if path p :
+ for i=0 upto m-1 :
+ s[point (i /m) along p,point (i /m) along q] .. controls
+ s[postcontrol (i /m) along p,postcontrol (i /m) along q] and
+ s[precontrol ((i+1)/m) along p,precontrol ((i+1)/m) along q] ..
+ endfor
+ if cycle p :
+ cycle
+ else :
+ s[point infinity of p,point infinity of q]
+ fi
+ else :
+ a[p,q]
+ fi
+enddef ;
+
+%D Interesting too:
+
+primarydef p paralleled d = (
+ p shifted if d < 0 : - fi ((point abs(d) on (p rotatedaround(point 0 of p,90))) - point 0 of p)
+) enddef ;
+
+vardef punked primary p =
+ point 0 of p for i=1 upto length(p)-1 : -- point i of p endfor
+ if cycle p : -- cycle else : -- point length(p) of p fi
+enddef ;
+
+vardef curved primary p =
+ point 0 of p for i=1 upto length(p)-1 : .. point i of p endfor
+ if cycle p : .. cycle else : .. point length(p) of p fi
+enddef ;
+
+primarydef p blownup s =
+ begingroup
+ save _p_ ; path _p_ ;
+ _p_ := p xysized (bbwidth(p)+2(xpart paired(s)),bbheight(p)+2(ypart paired(s))) ;
+ (_p_ shifted (center p - center _p_))
+ endgroup
+enddef ;
+
+%D Rather fundamental.
+
+% not yet ok
+
+vardef leftrightpath(expr p, l) = % used in s-pre-19
+ save q, r, t, b ; path q, r ; pair t, b ;
+ t := (ulcorner p -- urcorner p) intersection_point p ;
+ b := (llcorner p -- lrcorner p) intersection_point p ;
+ r := if xpart directionpoint t of p < 0 : reverse p else : p fi ; % r is needed, else problems when reverse is fed
+ q := r cutbefore if l: t else: b fi ;
+ q := q if xpart point 0 of r > 0 : & r fi cutafter if l: b else: t fi ;
+ q
+enddef ;
+
+vardef leftpath expr p = leftrightpath(p,true ) enddef ;
+vardef rightpath expr p = leftrightpath(p,false) enddef ;
+
+%D Drawoptions
+
+def saveoptions =
+ save _op_ ; def _op_ = enddef ;
+enddef ;
+
+%D Tracing. (not yet in lexer)
+
+let normaldraw = draw ;
+let normalfill = fill ;
+
+% bugged in mplib so ...
+
+def normalfill expr c = addto currentpicture contour c _op_ enddef ;
+def normaldraw expr p = addto currentpicture if picture p: also p else: doublepath p withpen currentpen fi _op_ enddef ;
+
+def drawlineoptions (text t) = def _lin_opt_ = t enddef ; enddef ;
+def drawpointoptions (text t) = def _pnt_opt_ = t enddef ; enddef ;
+def drawcontroloptions(text t) = def _ctr_opt_ = t enddef ; enddef ;
+def drawlabeloptions (text t) = def _lab_opt_ = t enddef ; enddef ;
+def draworiginoptions (text t) = def _ori_opt_ = t enddef ; enddef ;
+def drawboundoptions (text t) = def _bnd_opt_ = t enddef ; enddef ;
+def drawpathoptions (text t) = def _pth_opt_ = t enddef ; enddef ;
+
+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 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 if len>0 : len else : (arclength(pat)+len) fi of pat) of pat
+enddef ;
+
+% this cuts of a piece from both ends
+
+tertiarydef pat cutends len =
+ begingroup
+ save tap ; path tap ;
+ tap := pat cutbefore (point (xpart paired(len)) on pat) ;
+ (tap cutafter (point -(ypart paired(len)) on tap))
+ endgroup
+enddef ;
+
+%D To be documented.
+
+path freesquare ;
+
+freesquare := (
+ (-1,0) -- (-1,-1) -- (0,-1) -- (+1,-1) --
+ (+1,0) -- (+1,+1) -- (0,+1) -- (-1,+1) -- cycle
+) scaled .5 ;
+
+numeric freelabeloffset ; freelabeloffset := 3pt ;
+numeric freedotlabelsize ; freedotlabelsize := 3pt ;
+
+vardef thefreelabel (expr str, loc, ori) =
+ save s, p, q, l ; picture s ; path p, q ; pair l ;
+ interim labeloffset := freelabeloffset ;
+ s := if string str : thelabel(str,loc) else : str shifted -center str shifted loc fi ;
+ setbounds s to boundingbox s enlarged freelabeloffset ;
+ p := fullcircle scaled (2*length(loc-ori)) shifted ori ;
+ q := freesquare xyscaled (urcorner s - llcorner s) ;
+ l := point xpart (p intersectiontimes (ori--loc shifted (loc-ori))) of q ;
+ setbounds s to boundingbox s enlarged -freelabeloffset ; % new
+ % draw boundingbox s shifted -l withpen pencircle scaled .5pt withcolor red ;
+ (s shifted -l)
+enddef ;
+
+vardef freelabel (expr str, loc, ori) =
+ draw thefreelabel(str,loc,ori) ;
+enddef ;
+
+vardef freedotlabel (expr str, loc, ori) =
+ interim linecap:=rounded ;
+ draw loc withpen pencircle scaled freedotlabelsize ;
+ draw thefreelabel(str,loc,ori) ;
+enddef ;
+
+%D \starttypen
+%D drawarrow anglebetween(line_a,line_b,somelabel) ;
+%D \stoptypen
+
+newinternal angleoffset ; angleoffset := 0pt ;
+newinternal anglelength ; anglelength := 20pt ;
+newinternal anglemethod ; anglemethod := 1 ;
+
+vardef anglebetween (expr a, b, str) = % path path string
+ save pointa, pointb, common, middle, offset ;
+ pair pointa, pointb, common, middle, offset ;
+ save curve ; path curve ;
+ save where ; numeric where ;
+ if round point 0 of a = round point 0 of b :
+ common := point 0 of a ;
+ else :
+ common := a intersectionpoint b ;
+ fi ;
+ pointa := point anglelength on a ;
+ pointb := point anglelength on b ;
+ where := turningnumber (common--pointa--pointb--cycle) ;
+ middle := (reverse(common--pointa) rotatedaround (pointa,-where*90))
+ intersection_point
+ (reverse(common--pointb) rotatedaround (pointb, where*90)) ;
+ if not intersection_found :
+ middle := point .5 along
+ ((reverse(common--pointa) rotatedaround (pointa,-where*90)) --
+ ( (common--pointb) rotatedaround (pointb, where*90))) ;
+ fi ;
+ if anglemethod = 0 :
+ curve := pointa{unitvector(middle-pointa)}.. pointb;
+ middle := point .5 along curve ;
+ curve := common ;
+ elseif anglemethod = 1 :
+ curve := pointa{unitvector(middle-pointa)}.. pointb;
+ middle := point .5 along curve ;
+ elseif anglemethod = 2 :
+ middle := common rotatedaround(.5[pointa,pointb],180) ;
+ curve := pointa--middle--pointb ;
+ elseif anglemethod = 3 :
+ curve := pointa--middle--pointb ;
+ elseif anglemethod = 4 :
+ curve := pointa..controls middle..pointb ;
+ middle := point .5 along curve ;
+ fi ;
+ draw thefreelabel(str, middle, common) ; % withcolor black ;
+ curve
+enddef ;
+
+% Stack
+
+picture mfun_current_picture_stack[] ;
+numeric mfun_current_picture_depth ;
+
+mfun_current_picture_depth := 0 ;
+
+def pushcurrentpicture =
+ mfun_current_picture_depth := mfun_current_picture_depth + 1 ;
+ mfun_current_picture_stack[mfun_current_picture_depth] := currentpicture ;
+ currentpicture := nullpicture ;
+enddef ;
+
+def popcurrentpicture text t = % optional text
+ if mfun_current_picture_depth > 0 :
+ addto mfun_current_picture_stack[mfun_current_picture_depth] also currentpicture t ;
+ currentpicture := mfun_current_picture_stack[mfun_current_picture_depth] ;
+ mfun_current_picture_stack[mfun_current_picture_depth] := nullpicture ;
+ mfun_current_picture_depth := mfun_current_picture_depth - 1 ;
+ fi ;
+enddef ;
+
+%D colorcircle(size, red, green, blue) ;
+
+vardef colorcircle (expr size, red, green, blue) = % might move
+ save r, g, b, c, m, y, w ; save radius ;
+ path r, g, b, c, m, y, w ; numeric radius ;
+
+ radius := 5cm ; pickup pencircle scaled (radius/25) ;
+
+ transform t ; t := identity rotatedaround(origin,120) ;
+
+ r := fullcircle rotated 90 scaled radius shifted (0,radius/4) rotatedaround(origin,135) ;
+
+ b := r transformed t ; g := b transformed t ;
+
+ c := buildcycle(subpath(1,7) of g,subpath(1,7) of b) ;
+ y := c transformed t ; m := y transformed t ;
+
+ w := buildcycle(subpath(3,5) of r, subpath(3,5) of g,subpath(3,5) of b) ;
+
+ pushcurrentpicture ;
+
+ fill r withcolor red ;
+ fill g withcolor green ;
+ fill b withcolor blue ;
+ fill c withcolor white - red ;
+ fill m withcolor white - green ;
+ fill y withcolor white - blue ;
+ fill w withcolor white ;
+
+ for i = r,g,b,c,m,y : draw i withcolor .5white ; endfor ;
+
+ currentpicture := currentpicture xsized size ;
+
+ popcurrentpicture ;
+enddef ;
+
+% penpoint (i,2) of somepath -> inner / outer point
+
+vardef penpoint expr pnt of p =
+ save n, d ; numeric n, d ;
+ (n,d) = if pair pnt : pnt else : (pnt,1) fi ;
+ (point n of p shifted ((penoffset direction n of p of currentpen) scaled d))
+enddef ;
+
+% nice: currentpicture := inverted currentpicture ;
+
+primarydef p uncolored c =
+ if color p :
+ c - p
+ else :
+ image (
+ for i within p :
+ addto currentpicture
+ if stroked i or filled i :
+ if filled i :
+ contour
+ else :
+ doublepath
+ fi
+ pathpart i
+ dashed dashpart i withpen penpart i
+ else :
+ also i
+ fi
+ withcolor c-(redpart i, greenpart i, bluepart i) ;
+ endfor ;
+ )
+ fi
+enddef ;
+
+vardef inverted primary p =
+ p uncolored white
+enddef ;
+
+primarydef p softened c =
+ begingroup
+ save cc ; color cc ; cc := tripled(c) ;
+ if color p :
+ (redpart cc * redpart p,greenpart cc * greenpart p, bluepart cc * bluepart p)
+ else :
+ image (
+ for i within p :
+ addto currentpicture
+ if stroked i or filled i :
+ if filled i :
+ contour
+ else :
+ doublepath
+ fi
+ pathpart i
+ dashed dashpart i withpen penpart i
+ else :
+ also i
+ fi
+ withcolor (redpart cc * redpart i, greenpart cc * greenpart i, bluepart cc * bluepart i) ;
+ endfor ;
+ )
+ fi
+ endgroup
+enddef ;
+
+vardef grayed primary p =
+ if 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
+ if pair p :
+ save q ; path q ; q := origin -- p ;
+ save al ; al := arclength(q) ;
+ if al > 0 :
+ point 1 of (q stretched ((al+len)/al))
+ else :
+ p
+ fi
+ else :
+ save al ; al := arclength(p) ;
+ if al > 0 :
+ p stretched ((al+len)/al)
+ else :
+ p
+ fi
+ fi
+ endgroup
+enddef ;
+
+% path p ; p := (0,0) -- (10cm,5cm) ;
+% drawarrow p withcolor red ;
+% drawarrow p shortened 1cm withcolor green ;
+
+primarydef p shortened d =
+ reverse ( ( reverse (p enlonged -d) ) enlonged -d )
+enddef ;
+
+% yes or no, untested -)
+
+def xshifted expr dx = shifted(dx,0) enddef ;
+def yshifted expr dy = shifted(0,dy) enddef ;
+
+% also handy
+
+% right: str = readfrom ("abc" & ".def" ) ;
+% wrong: str = readfrom "abc" & ".def" ;
+
+% Every 62th read fails so we need to try again!
+
+% def readfile (expr name) =
+% if (readfrom (name) <> EOF) :
+% scantokens("input " & name & ";") ;
+% elseif (readfrom (name) <> EOF) :
+% scantokens("input " & name & ";") ;
+% fi ;
+% closefrom (name) ;
+% enddef ;
+%
+% this sometimes fails on the elseif, so :
+%
+
+def readfile (expr name) =
+ begingroup ; save ok ; boolean ok ;
+ if (readfrom (name) <> EOF) :
+ ok := false ;
+ elseif (readfrom (name) <> EOF) :
+ ok := false ;
+ else :
+ ok := true ;
+ fi ;
+ if not ok :
+ scantokens("input " & name & " ") ;
+ fi ;
+ closefrom (name) ;
+ endgroup ;
+enddef ;
+
+% permits redefinition of end in macro
+
+inner end ;
+
+% this will be redone (when needed) using scripts and backend handling
+
+let normalwithcolor = withcolor ;
+
+def remapcolors =
+ def withcolor primary c = normalwithcolor remappedcolor(c) enddef ;
+enddef ;
+
+def normalcolors =
+ let withcolor = normalwithcolor ;
+enddef ;
+
+def resetcolormap =
+ color color_map[][][] ;
+ normalcolors ;
+enddef ;
+
+resetcolormap ;
+
+def r_color primary c = redpart c enddef ;
+def g_color primary c = greenpart c enddef ;
+def b_color primary c = bluepart c enddef ;
+
+def remapcolor(expr old, new) =
+ color_map[redpart old][greenpart old][bluepart old] := new ;
+enddef ;
+
+def remappedcolor(expr c) =
+ if known color_map[redpart c][greenpart c][bluepart c] :
+ color_map[redpart c][greenpart c][bluepart c]
+ else :
+ c
+ fi
+enddef ;
+
+% Thanks to Jens-Uwe Morawski for pointing out that we need
+% to treat bounded and clipped components as local pictures.
+
+def recolor suffix p = p := repathed (0,p) enddef ;
+def refill suffix p = p := repathed (1,p) enddef ;
+def redraw suffix p = p := repathed (2,p) enddef ;
+def retext suffix p = p := repathed (3,p) enddef ;
+def untext suffix p = p := repathed (4,p) enddef ;
+
+% primarydef p recolored t = repathed(0,p) t enddef ;
+% primarydef p refilled t = repathed(1,p) t enddef ;
+% primarydef p redrawn t = repathed(2,p) t enddef ;
+% primarydef p retexted t = repathed(3,p) t enddef ;
+% primarydef p untexted t = repathed(4,p) t enddef ;
+
+color refillbackground ; refillbackground := (1,1,1) ;
+
+def restroke suffix p = p := repathed (21,p) enddef ; % keep attributes
+def reprocess suffix p = p := repathed (22,p) enddef ; % no attributes
+
+% also 11 and 12
+
+vardef repathed (expr mode, p) text t =
+ begingroup ;
+ if mode = 0 :
+ save withcolor ;
+ remapcolors ;
+ fi ;
+ save _p_, _pp_, _ppp_, _f_, _b_, _t_ ;
+ picture _p_, _pp_, _ppp_ ; color _f_ ; path _b_ ; transform _t_ ;
+ _b_ := boundingbox p ;
+ _p_ := nullpicture ;
+ for i within p :
+ _f_ := (redpart i, greenpart i, bluepart i) ;
+ if bounded i :
+ _pp_ := repathed(mode,i) t ;
+ setbounds _pp_ to pathpart i ;
+ addto _p_ also _pp_ ;
+ elseif clipped i :
+ _pp_ := repathed(mode,i) t ;
+ clip _pp_ to pathpart i ;
+ addto _p_ also _pp_ ;
+ elseif stroked i :
+ if mode=21 :
+ _ppp_ := i ; % indirectness is needed
+ addto _p_ also image(scantokens(t & " pathpart _ppp_")
+ dashed dashpart i withpen penpart i
+ withcolor _f_ ; ) ;
+ elseif mode=22 :
+ _ppp_ := i ; % indirectness is needed
+ addto _p_ also image(scantokens(t & " pathpart _ppp_")) ;
+ else :
+ addto _p_ doublepath pathpart i
+ dashed dashpart i withpen penpart i
+ withcolor _f_ % (redpart i, greenpart i, bluepart i)
+ if mode = 2 :
+ t
+ fi ;
+ fi ;
+ elseif filled i :
+ if mode=11 :
+ _ppp_ := i ; % indirectness is needed
+ addto _p_ also image(scantokens(t & " pathpart _ppp_")
+ withcolor _f_ ; ) ;
+ elseif mode=12 :
+ _ppp_ := i ; % indirectness is needed
+ addto _p_ also image(scantokens(t & " pathpart _ppp_")) ;
+ else :
+ addto _p_ contour pathpart i
+ withcolor _f_
+ if (mode=1) and (_f_<>refillbackground) :
+ t
+ fi ;
+ fi ;
+ elseif textual i : % textpart i <> "" :
+ if mode <> 4 :
+ % transform _t_ ;
+ % (xpart _t_, xxpart _t_, xypart _t_) = (xpart i, xxpart i, xypart i) ;
+ % (ypart _t_, yypart _t_, yxpart _t_) = (ypart i, yypart i, yxpart i) ;
+ % addto _p_ also
+ % textpart i infont fontpart i % todo : other font
+ % transformed _t_
+ % withpen penpart i
+ % withcolor _f_
+ % if mode=3 : t fi ;
+ addto _p_ also i
+ if mode=3 :
+ t
+ fi ;
+ fi ;
+ else :
+ addto _p_ also i ;
+ fi ;
+ endfor ;
+ setbounds _p_ to _b_ ;
+ _p_
+ endgroup
+enddef ;
+
+% After a question of Denis on how to erase a z variable, Jacko
+% suggested to assign whatever to x and y. So a clearz
+% variable can be defined as:
+%
+% vardef clearz@# =
+% x@# := whatever ;
+% y@# := whatever ;
+% enddef ;
+%
+% but Jacko suggested a redefinition of clearxy:
+%
+% def clearxy text s =
+% clearxy_index_:=0;
+% for $:=s:
+% clearxy_index_:=clearxy_index_+1; endfor;
+% if clearxy_index_=0:
+% save x,y;
+% else:
+% forsuffixes $:=s: x$:=whatever; y$:=whatever; endfor;
+% fi
+% enddef;
+%
+% which i decided to simplify to:
+
+def clearxy text s =
+ if false for $ := s : or true endfor :
+ forsuffixes $ := s : x$ := whatever ; y$ := whatever ; endfor ;
+ else :
+ save x, y ;
+ fi
+enddef ;
+
+% so now we can say: clearxy ; as well as clearxy 1, 2, 3 ;
+
+% show x0 ; z0 = (10,10) ;
+% show x0 ; x0 := whatever ; y0 := whatever ;
+% show x0 ; z0 = (20,20) ;
+% show x0 ; clearxy 0 ;
+% show x0 ; z0 = (30,30) ;
+
+primarydef p smoothed d =
+ (p llmoved (-xpart paired(d),0) -- p lrmoved (-xpart paired(d),0) {right} ..
+ p lrmoved (0,-ypart paired(d)) -- p urmoved (0,-ypart paired(d)) {up} ..
+ p urmoved (-xpart paired(d),0) -- p ulmoved (-xpart paired(d),0) {left} ..
+ p ulmoved (0,-ypart paired(d)) -- p llmoved (0,-ypart paired(d)) {down} .. cycle)
+enddef ;
+
+primarydef p cornered c =
+ ((point 0 of p) shifted (c*(unitvector(point 1 of p - point 0 of p))) --
+ for i=1 upto length(p) :
+ (point i-1 of p) shifted (c*(unitvector(point i of p - point i-1 of p))) --
+ (point i of p) shifted (c*(unitvector(point i-1 of p - point i of p))) ..
+ controls point i of p ..
+ endfor cycle)
+enddef ;
+
+% cmyk color support
+
+% vardef cmyk(expr c,m,y,k) = % elsewhere
+% (1-c-k,1-m-k,1-y-k)
+% enddef ;
+
+% handy
+
+% vardef bbwidth (expr p) = % vardef width_of primary p =
+% if known p :
+% if path p or picture p :
+% xpart (lrcorner p - llcorner p)
+% else :
+% 0
+% fi
+% else :
+% 0
+% fi
+% enddef ;
+
+vardef bbwidth primary p =
+ if unknown p :
+ 0
+ elseif path p or picture p :
+ xpart (lrcorner p - llcorner p)
+ else :
+ 0
+ fi
+enddef ;
+
+% vardef bbheight (expr p) = % vardef heigth_of primary p =
+% if known p :
+% if path p or picture p :
+% ypart (urcorner p - lrcorner p)
+% else :
+% 0
+% fi
+% else :
+% 0
+% fi
+% enddef ;
+
+vardef bbheight primary p =
+ if unknown p :
+ 0
+ elseif path p or picture p :
+ ypart (urcorner p - lrcorner p)
+ else :
+ 0
+ fi
+enddef ;
+
+color nocolor ; numeric noline ; % both unknown signals
+
+def dowithpath (expr p, lw, lc, bc) =
+ if known p :
+ if known bc :
+ fill p withcolor bc ;
+ fi ;
+ if known lw and known lc :
+ draw p withpen pencircle scaled lw withcolor lc ;
+ elseif known lw :
+ draw p withpen pencircle scaled lw ;
+ elseif known lc :
+ draw p withcolor lc ;
+ fi ;
+ fi ;
+enddef ;
+
+% result from metafont discussion list (denisr/boguslawj)
+
+def [[ = [ [ enddef ; def [[[ = [ [ [ enddef ;
+def ]] = ] ] enddef ; def ]]] = ] ] ] enddef ;
+
+% not perfect, but useful since it removes redundant points.
+
+vardef mfun_straightened(expr sign, p) =
+ save _p_, _q_ ; path _p_, _q_ ;
+ _p_ := p ;
+ forever :
+ _q_ := mfun_do_straightened(sign, _p_) ;
+ exitif length(_p_) = length(_q_) ;
+ _p_ := _q_ ;
+ endfor ;
+ _q_
+enddef ;
+
+vardef mfun_do_straightened(expr sign, p) =
+ if length(p)>2 : % was 1, but straight lines are ok
+ save pp ; path pp ;
+ pp := point 0 of p ;
+ for i=1 upto length(p)-1 :
+ if round(point i of p) <> round(point length(pp) of pp) :
+ pp := pp -- point i of p ;
+ fi ;
+ endfor ;
+ save n, ok ; numeric n ; boolean ok ;
+ n := length(pp) ; ok := false ;
+ if n>2 :
+ for i=0 upto n : % evt hier ook round
+ if unitvector(round(point i of pp - point if i=0 : n else : i-1 fi of pp)) <>
+ sign * unitvector(round(point if i=n : 0 else : i+1 fi of pp - point i of pp)) :
+ if ok :
+ --
+ else :
+ ok := true ;
+ fi point i of pp
+ fi
+ endfor
+ if ok and (cycle p) :
+ -- cycle
+ fi
+ else :
+ pp
+ fi
+ else :
+ p
+ fi
+enddef ;
+
+vardef simplified expr p = (
+ reverse mfun_straightened(+1,mfun_straightened(+1,reverse p))
+) enddef ;
+
+vardef unspiked expr p = (
+ reverse mfun_straightened(-1,mfun_straightened(-1,reverse p))
+) enddef ;
+
+% path p ;
+% p := (2cm,1cm) -- (2cm,1cm) -- (2cm,1cm) -- (3cm,1cm) --
+% (4cm,1cm) -- (4cm,2cm) -- (4cm,2.5cm) -- (4cm,3cm) --
+% (3cm,3cm) -- (2cm,3cm) -- (1cm,3cm) -- (-1cm,3cm) --
+% .5[(-1cm,3cm),(1cm,1cm)] -- (1cm,1cm) -- cycle ;
+%
+% p := unitcircle scaled 4cm ;
+%
+% drawpath p ; drawpoints p ; drawpointlabels p ;
+% p := p shifted (4cm,0) ; p := straightened p ;
+% drawpath p ; drawpoints p ; drawpointlabels p ;
+% p := p shifted (4cm,0) ; p := straightened p ;
+% drawpath p ; drawpoints p ; drawpointlabels p ;
+
+% new
+
+path originpath ; originpath := origin -- cycle ;
+
+vardef unitvector primary z =
+ if abs z = abs origin : z else : z/abs z fi
+enddef;
+
+% also new
+
+vardef anchored@#(expr p, z) = % maybe use the textext variant
+ p shifted (z + (labxf@#*lrcorner p + labyf@#*ulcorner p + (1-labxf@#-labyf@#)*llcorner p))
+enddef ;
+
+% epsed(1.2345)
+
+vardef epsed (expr e) =
+ e if e>0 : + eps elseif e<0 : - eps fi
+enddef ;
+
+% handy
+
+def withgray primary g =
+ withcolor (g,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) .. will go away
+
+string mfun_clean_ascii[] ;
+
+def register_dirty_chars(expr str) =
+ for i = 0 upto length(str)-1 :
+ mfun_clean_ascii[ASCII substring(i,i+1) of str] := "_" ;
+ endfor ;
+enddef ;
+
+register_dirty_chars("+-*/:;., ") ;
+
+vardef cleanstring (expr s) =
+ save ss ; string ss, si ; ss = "" ; save i ;
+ for i=0 upto length(s) :
+ si := substring(i,i+1) of s ;
+ ss := ss & if known mfun_clean_ascii[ASCII si] : mfun_clean_ascii[ASCII si] else : si fi ;
+ endfor ;
+ ss
+enddef ;
+
+vardef asciistring (expr s) =
+ save ss ; string ss, si ; ss = "" ; save i ;
+ for i=0 upto length(s) :
+ si := substring(i,i+1) of s ;
+ if (ASCII si >= ASCII "0") and (ASCII si <= ASCII "9") :
+ ss := ss & char(scantokens(si) + ASCII "A") ;
+ else :
+ ss := ss & si ;
+ fi ;
+ endfor ;
+ ss
+enddef ;
+
+vardef setunstringed (expr s, v) =
+ scantokens(cleanstring(s)) := v ;
+enddef ;
+
+vardef setunstringed (expr s, v) =
+ scantokens(cleanstring(s)) := v ;
+enddef ;
+
+vardef getunstringed (expr s) =
+ scantokens(cleanstring(s))
+enddef ;
+
+vardef unstringed (expr s) =
+ expandafter known scantokens(cleanstring(s))
+enddef ;
+
+% for david arnold:
+
+% showgrid(-5,10,1cm,-10,10,1cm);
+
+def showgrid (expr MinX, MaxX, DeltaX, MinY, MaxY, DeltaY) = % will move
+ begingroup
+ save 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) = % to be checked
+ picture _p_ ;
+ _p_ := image(t) ;
+ addto _p_ also currentpicture ;
+ setbounds currentpicture to boundingbox _p_ ;
+enddef ;
+
+vardef c_phantom (expr b) (text t) =
+ if b :
+ picture _p_ ;
+ _p_ := image(t) ;
+ addto _p_ also currentpicture ;
+ setbounds currentpicture to boundingbox _p_ ;
+ else :
+ t ;
+ fi ;
+enddef ;
+
+%D Handy:
+
+def break =
+ exitif true fi ;
+enddef ;
+
+%D New too:
+
+primarydef p xstretched w = (
+ p if (bbwidth (p)>0) and (w>0) : xscaled (w/bbwidth (p)) fi
+) enddef ;
+
+primarydef p ystretched h = (
+ p if (bbheight(p)>0) and (h>0) : yscaled (h/bbheight(p)) fi
+) enddef ;
+
+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.mpii
index f208c7149..d3d25293d 100644
--- a/metapost/context/base/mp-txts.mp
+++ b/metapost/context/base/mp-txts.mpii
@@ -11,8 +11,7 @@
%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 ;
+if known context_txts : endinput ; fi ;
boolean context_txts ; context_txts := true ;