Edit File: lines.ps
%! % 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. % % Test line rendering (stroke). % Exercise the miter limit. The left column of lines should bevel at % 90 degrees, the right column at 60 degrees. gsave 1.8 setlinewidth 0 setgray 15 15 scale -5 5 translate [1.415 2.0] { setmiterlimit 12 0 translate 0 0 moveto 10 30 360 { gsave 5 0 rlineto rotate 2.5 0 rlineto gsave 0 setlinewidth 1 0 0 setrgbcolor stroke grestore strokepath 0 setlinewidth stroke grestore 0 4 rmoveto } for } forall showpage grestore % Exercise all the combinations of cap and join styles % for one-line, two-line, and closed paths. gsave /drawlines { gsave 2.0 setmiterlimit 2.0 setlinewidth 6 6 scale 5 20 translate {0 1 2} % line cap { setlinecap gsave {0 1 2} % line join { setlinejoin gsave { {currentpoint lineto} {3 7 lineto} {3 7 lineto 5 1 lineto} {3 7 lineto 6 3 lineto closepath} } { gsave 0 0 moveto exec gsave stroke grestore 0.5 setlinewidth 1 0 0 setrgbcolor stroke grestore 8 0 translate } forall grestore 35 0 translate } forall grestore 0 20 translate } forall grestore } def /xflip { 8.5 72 mul 0 translate -1 1 scale } def /rot90 { 90 rotate 0 -9.75 72 mul translate } def /rot180 { rot90 rot90 } def /rot270 { rot180 rot90 } def drawlines showpage gsave xflip drawlines grestore showpage gsave rot90 drawlines grestore showpage gsave rot90 xflip drawlines grestore showpage gsave drawlines rot180 showpage gsave rot180 xflip drawlines grestore showpage gsave rot270 drawlines grestore showpage gsave rot270 xflip drawlines grestore showpage grestore % Here are some boundary conditions, contributed by Mark Rawling. gsave 1 setlinecap 2.6 setmiterlimit 3.0 setlinewidth 5 5 scale 10 20 translate % [ 0.5 sqrt dup dup dup neg exch 0 0 ] concat % 45 rotate {0 1 2} % line join { setlinejoin gsave 0 0 moveto 0 10 lineto 10 0 lineto gsave stroke grestore 15 0 translate 0 0 moveto 0 10 lineto 10 20 lineto gsave stroke grestore 15 0 translate 10 0 moveto 10 10 lineto 0 20 lineto gsave stroke grestore 15 0 translate 10 0 moveto 10 10 lineto 0 0 lineto gsave stroke grestore grestore gsave 0 20 translate 0 20 moveto 0 10 lineto 10 20 lineto gsave stroke grestore 15 0 translate 0 20 moveto 0 10 lineto 10 0 lineto gsave stroke grestore 15 0 translate 10 20 moveto 10 10 lineto 0 0 lineto gsave stroke grestore 15 0 translate 10 20 moveto 10 10 lineto 0 20 lineto gsave stroke grestore grestore 60 0 translate } forall showpage grestore % Test narrow lines at a variety of angles. gsave /rad 120 def /ray { gsave rotate 0 0 moveto rad 0 rlineto stroke grestore } def /star { newpath gsave gsave 0.5 setgray 0 0 rad 0 360 arc stroke grestore 0 90 359 { rotate 0 3 14 { ray } for 15 15 89 { ray } for } for grestore } def 0 setgray 150 150 translate [ [ 0 0.5 1 ] [ 1.5 2 2.5 ] [ 3 3.5 4 ] ] { gsave { setlinewidth star 250 0 translate } forall grestore 0 250 translate } forall grestore showpage % End quit
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