diff options
Diffstat (limited to 'tex/context/base/mkiv/meta-imp-clp.mkiv')
| -rw-r--r-- | tex/context/base/mkiv/meta-imp-clp.mkiv | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/meta-imp-clp.mkiv b/tex/context/base/mkiv/meta-imp-clp.mkiv new file mode 100644 index 000000000..5c9206dee --- /dev/null +++ b/tex/context/base/mkiv/meta-imp-clp.mkiv @@ -0,0 +1,164 @@ +%D \module +%D [ file=meta-clp, +%D version=2000.07.06, +%D title=\METAPOST\ Graphics, +%D subtitle=Clipping, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%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 In this library, we define a bunch of clipping paths that +%D can be fed to \type {\clip}. + +\startMPclip{ellipse} + clip currentpicture to unitcircle + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{negellipse} + clip currentpicture to (unitcircle peepholed unitsquare) + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{urellipse} + clip currentpicture to urcircle scaled 2 + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{ulellipse} + clip currentpicture to ulcircle scaled 2 shifted (1,0) + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{llellipse} + clip currentpicture to llcircle scaled 2 shifted (1,1) + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{lrellipse} + clip currentpicture to lrcircle scaled 2 shifted (0,1) + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{tellipse} + clip currentpicture to tcircle shifted (.5,0) yscaled 2 + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{bellipse} + clip currentpicture to bcircle shifted (.5,.5) yscaled 2 + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{lellipse} + clip currentpicture to lcircle shifted (.5,.5) xscaled 2 + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{rellipse} + clip currentpicture to rcircle shifted (0,.5) xscaled 2 + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{diamond} + clip currentpicture to unitdiamond + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{negdiamond} + clip currentpicture to (unitdiamond peepholed unitsquare) + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{urtriangle} + clip currentpicture to urtriangle scaled 2 + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{ultriangle} + clip currentpicture to ultriangle scaled 2 shifted (1,0) + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{lltriangle} + clip currentpicture to lltriangle scaled 2 shifted (1,1) + xscaled \width yscaled \height ; +\stopMPclip + +\startMPclip{lrtriangle} + clip currentpicture to lrtriangle scaled 2 shifted (0,1) + xscaled \width yscaled \height ; +\stopMPclip + +% More efficient: +% +% \def\dosimpleMPclip#1 +% {clip currentpicture to (#1) xscaled \width yscaled \height ;} +% +% \def\simpleMPclip#1#2% +% {\startMPclip{#1}\dosimpleMPclip{#2}\stopMPclip} +% +% \simpleMPclip {ellipse} {unitcircle} +% \simpleMPclip {diamond} {unitdiamond} +% +% \simpleMPclip {negellipse} {unitcircle peepholed unitsquare} +% \simpleMPclip {negdiamond} {unitdiamond peepholed unitsquare} +% +% \simpleMPclip {urellipse} {urcircle scaled 2 shifted (0,0)} +% \simpleMPclip {ulellipse} {ulcircle scaled 2 shifted (1,0)} +% \simpleMPclip {llellipse} {llcircle scaled 2 shifted (1,1)} +% \simpleMPclip {lrellipse} {lrcircle scaled 2 shifted (0,1)} +% +% \simpleMPclip {tellipse} {tcircle shifted (.5,0) yscaled 2} +% \simpleMPclip {bellipse} {bcircle shifted (.5,.5) yscaled 2} +% \simpleMPclip {lellipse} {lcircle shifted (.5,.5) xscaled 2} +% \simpleMPclip {rellipse} {rcircle shifted (0,.5) xscaled 2} +% +% \simpleMPclip {urtriangle} {urtriangle scaled 2 shifted (0,0)} +% \simpleMPclip {ultriangle} {ultriangle scaled 2 shifted (1,0)} +% \simpleMPclip {lltriangle} {lltriangle scaled 2 shifted (1,1)} +% \simpleMPclip {lrtriangle} {lrtriangle scaled 2 shifted (0,1)} + +%D \in {Figure} [fig:clipping paths] shows which paths are +%D predefined. When applied to a whole picture, their usage +%D is: +%D +%D \starttyping +%D \clip[nx=1,ny=1,mp=ellipse]{some clippable content} +%D \stoptyping +%D +%D \startbuffer +%D \setupclipping [nx=1,ny=1,x=1,y=1] +%D \setupblackrules[width=2cm,height=1cm] +%D \startcombination[6*3] % \startcombination[6*3] +%D {\clip[mp=urellipse] {\blackrule}} {urellipse} +%D {\clip[mp=ulellipse] {\blackrule}} {ulellipse} +%D {\clip[mp=llellipse] {\blackrule}} {llellipse} +%D {\clip[mp=lrellipse] {\blackrule}} {lrellipse} +%D {\clip[mp=ellipse] {\blackrule}} {ellipse} +%D {\clip[mp=negellipse]{\blackrule}} {negellipse} +%D {\clip[mp=tellipse] {\blackrule}} {tellipse} +%D {\clip[mp=bellipse] {\blackrule}} {bellipse} +%D {\clip[mp=lellipse] {\blackrule}} {lellipse} +%D {\clip[mp=rellipse] {\blackrule}} {rellipse} +%D {} {} +%D {} {} +%D {\clip[mp=urtriangle]{\blackrule}} {urtriangle} +%D {\clip[mp=ultriangle]{\blackrule}} {ultriangle} +%D {\clip[mp=lltriangle]{\blackrule}} {lltriangle} +%D {\clip[mp=lrtriangle]{\blackrule}} {lrtriangle} +%D {\clip[mp=diamond] {\blackrule}} {diamond} +%D {\clip[mp=negdiamond]{\blackrule}} {negdiamond} +%D \stopcombination % \stopcombination +%D \stopbuffer +%D +%D \placefigure % \placefigure +%D [here][fig:clipping paths] +%D {The predefined clipping paths.} +%D {\getbuffer} % {\getbuffer} + +\endinput |