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Diffstat (limited to 'Master/texmf-dist/metapost/context/base/mp-fobg.mp')
-rw-r--r-- | Master/texmf-dist/metapost/context/base/mp-fobg.mp | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/Master/texmf-dist/metapost/context/base/mp-fobg.mp b/Master/texmf-dist/metapost/context/base/mp-fobg.mp new file mode 100644 index 00000000000..712efe751aa --- /dev/null +++ b/Master/texmf-dist/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 ; |