ref: 81c9ede53f6f9ebd67e7134e664c98e08b9fcca6
dir: /sys/src/cmd/gs/lib/markpath.ps/
% Copyright (C) 1993 Aladdin Enterprises. 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.
%
% For more information about licensing, please refer to
% http://www.ghostscript.com/licensing/. For information on
% commercial licensing, go to http://www.artifex.com/licensing/ or
% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
% $Id: markpath.ps,v 1.4 2002/02/21 21:49:28 giles Exp $
% markpath.ps
% Mark the corners of a path, drawing it slowly if desired.
/Delay where { pop } { /Delay 0 def } ifelse
/setxy0
{ currentpoint /y0 exch def /x0 exch def
} def
/bip
{ epsx epsy idtransform /ey exch def /ex exch def
currentpoint ex 2 div ey 2 div rlineto currentpoint 0 ey neg rlineto
ex neg 0 rlineto 0 ey rlineto lineto lineto
stroke
} def
/dally
{ Delay { } repeat
Delay 0 ne { flushpage } if
} def
/movebip
{ /xs 2 index def /ys 1 index def
gsave newpath mpmx transform moveto setxy0 bip grestore
} def
/linebip
{ gsave newpath x0 y0 moveto mpmx transform lineto setxy0 bip dally grestore
} def
/curvebip
{ gsave newpath x0 y0 moveto 5 index 5 index mpmx transform lineto bip
2 copy mpmx transform moveto 3 index 3 index mpmx transform lineto bip
x0 y0 moveto
3 { mpmx transform 6 2 roll } repeat
curveto setxy0 bip dally grestore
} def
/closebip
{ xs ys linebip
} def
/markpath % <matrix> markpath -
{ /mpmx exch def
gsave initgraphics 9 dup dtransform grestore
/epsy exch def /epsx exch def
gsave 0 setlinewidth
{ movebip } { linebip } { curvebip } { closebip } pathforall
grestore
} def