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Diffstat (limited to 'lib/zeroline.ps')
| -rw-r--r-- | lib/zeroline.ps | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/lib/zeroline.ps b/lib/zeroline.ps new file mode 100644 index 00000000..521b1de0 --- /dev/null +++ b/lib/zeroline.ps @@ -0,0 +1,99 @@ +%! +% Copyright (C) 2001-2019 Artifex Software, Inc. +% All Rights Reserved. +% +% This software is provided AS-IS with no warranty, either express or +% implied. +% +% This software is distributed under license and may not be copied, +% modified or distributed except as expressly authorized under the terms +% of the license contained in the file LICENSE in this distribution. +% +% Refer to licensing information at http://www.artifex.com or contact +% Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato, +% CA 94945, U.S.A., +1(415)492-9861, for further information. +% + +% zeroline.ps +% Test file to determine how other PostScript implementations handle +% filling zero-width lines under a variety of conditions. + +% Add a small "fan" of zero-width lines at different angles to the path. +/fan + { currentpoint 100 0 rlineto + 2 copy moveto 100 20 rlineto + 2 copy moveto 100 100 rlineto + 2 copy moveto 20 100 rlineto + moveto 0 100 rlineto + } def + +% Append a rectangle to the current path. +/rectappend + { 4 -2 roll moveto 1 index 0 rlineto 0 exch rlineto + neg 0 rlineto closepath + } def +% Fill a rectangle. +/rectfill + { gsave newpath rectappend fill grestore + } def +% Stroke a rectangle. +/rectstroke + { gsave newpath rectappend stroke grestore + } def +% Clip to a rectangle. Unlike the real rectclip, +% this clear the current path. +/rectclip + { newpath rectappend clip newpath + } def + +40 40 translate + +% Display fans of different colors on different backgrounds. +gsave +0 setgray +0 0 120 120 rectstroke +10 10 moveto fan fill +140 0 translate +0 setgray +0 0 120 120 rectstroke +0.8 setgray +10 10 moveto fan fill +140 0 translate +0 setgray +0 0 120 120 rectfill +1 setgray +10 10 moveto fan fill +grestore +0 140 translate + +% Display rectangles with two edges coincident. +gsave +newpath +0 setgray +0 0 40 40 rectappend +0 0 20 20 rectappend +eofill +60 0 translate +0 0 40 40 rectappend +40 0 -20 20 rectappend +fill +grestore +0 60 translate + +% Display superimposed lines. +gsave +/super + { currentpoint fan + 2 copy moveto 20 0 rmoveto 50 0 rlineto + 2 copy moveto 20 4 rmoveto 50 10 rlineto + 2 copy moveto 20 20 rmoveto 50 50 rlineto + 2 copy moveto 4 20 rmoveto 10 50 rlineto + moveto 0 20 rmoveto 0 50 rlineto + } def +0 setgray +0 0 moveto super fill +140 0 translate 0 0 moveto super eofill +grestore +0 140 translate + +showpage |