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authorHans Hagen <pragma@wxs.nl>2004-11-16 00:00:00 +0100
committerHans Hagen <pragma@wxs.nl>2004-11-16 00:00:00 +0100
commit04f482905287b3f547607cd32d0842d59350a5ab (patch)
tree57ba1ccf8387ce91a64471b14654a3a513df8394 /metapost
parent3fccc675f2b68a25c508bf217f97b1d54ca765af (diff)
downloadcontext-04f482905287b3f547607cd32d0842d59350a5ab.tar.gz
stable 2004.11.16
Diffstat (limited to 'metapost')
-rw-r--r--metapost/context/base/mp-fobg.mp88
1 files changed, 88 insertions, 0 deletions
diff --git a/metapost/context/base/mp-fobg.mp b/metapost/context/base/mp-fobg.mp
new file mode 100644
index 000000000..712efe751
--- /dev/null
+++ b/metapost/context/base/mp-fobg.mp
@@ -0,0 +1,88 @@
+%D \module
+%D [ file=mp-fobg.mp,
+%D version=2004.03.12,
+%D title=\CONTEXT\ \METAPOST\ graphics,
+%D subtitle=Formatting Objects,
+%D author=Hans Hagen,
+%D date=\currentdate,
+%D copyright={PRAGMA / Hans Hagen \& Ton Otten}]
+%C
+%C This module is part of the \CONTEXT\ macro||package and is
+%C therefore copyrighted by \PRAGMA. See licen-en.pdf for
+%C details.
+
+if unknown context_tool : input mp-tool ; fi ;
+if known context_fobg : endinput ; fi ;
+
+boolean context_fobg ; context_fobg := true ;
+
+FoNone := 0 ; FoHidden := 1 ; FoDotted := 2 ; FoDashed := 3 ; FoSolid := 4 ;
+FoDouble := 5 ; FoGroove := 6 ; FoRidge := 7 ; FoInset := 8 ; FoOutset := 9 ;
+FoAll := 0 ; FoTop := 1 ; FoBottom := 2 ; FoLeft := 3 ; FoRight := 4 ;
+FoMedium := .5pt ; FoThin := FoMedium/2 ; FoThick := FoMedium*2 ;
+
+color FoBackgroundColor, FoNoColor, FoLineColor[] ; FoNoColor := (-1,-1,-1) ;
+numeric FoLineWidth[], FoLineStyle[] ;
+boolean FoFrame, FoBackground, FoSplit ;
+
+FoFrame := FoBackground := FoSplit := false ;
+FoBackgroundColor := white ;
+FoDashFactor := .5 ;
+FoDotFactor := .375 ;
+
+for i = FoAll upto FoRight :
+ FoLineColor[i] := black ;
+ FoLineWidth[i] := .5pt ;
+ FoLineStyle[i] := FoNone ;
+endfor ;
+
+def DrawFoFrame(expr n, p) =
+ drawoptions(withcolor FoLineColor[n] withpen pencircle scaled FoLineWidth[n]) ;
+ if FoLineStyle[n] = FoNone :
+ % nothing
+ elseif FoLineStyle[n] = FoHidden :
+ % nothing
+ elseif FoLineStyle[n] = FoDotted :
+ draw p dashed (withdots scaled (FoDotFactor*FoLineWidth[n])) ;
+ elseif FoLineStyle[n] = FoDashed :
+ draw p dashed (evenly scaled (FoDashFactor*FoLineWidth[n])) ;
+ elseif FoLineStyle[n] = FoSolid :
+ draw p ;
+ elseif FoLineStyle[n] = FoDouble :
+ draw p enlarged FoLineWidth[n] ; draw p enlarged -FoLineWidth[n] ;
+ elseif FoLineStyle[n] = FoGroove :
+ draw p ;
+ draw p withpen pencircle scaled .5FoLineWidth[n] withcolor (inverted FoLineColor[n] softened .5) ;
+ elseif FoLineStyle[n] = FoRidge :
+ draw p withcolor (inverted FoLineColor[n] softened .5) ;
+ draw p withpen pencircle scaled .5FoLineWidth[n] ;
+ elseif FoLineStyle[n] = FoInset :
+ draw p ; draw p inset 2.5FoLineWidth[n] ;
+ elseif FoLineStyle[n] = FoOutset :
+ draw p ; draw p outset 2.5FoLineWidth[n] ;
+ fi ;
+enddef ;
+
+primarydef p outset d =
+ ((lrcorner p -- urcorner p -- ulcorner p -- llcorner p -- cycle)
+ shifted (d*(-1,1)) cutbefore topboundary p) cutafter leftboundary p
+enddef ;
+
+primarydef p inset d =
+ ((ulcorner p -- llcorner p -- lrcorner p -- urcorner p -- cycle)
+ shifted (d*(1,-1)) cutbefore bottomboundary p) cutafter rightboundary p
+enddef ;
+
+vardef equalpaths(expr p, q) =
+ if length(p) = length(q) :
+ save ok ; boolean ok ; ok := true ;
+ for i = 0 upto length(p)-1 :
+ ok := ok and (round(point i of p) = round(point i of q)) ;
+ endfor ;
+ ok
+ else :
+ false
+ fi
+enddef ;
+
+endinput ;