Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!decwrl!aladdin!ghost
From: ghost@aladdin.com (L. Peter Deutsch)
Newsgroups: comp.lang.postscript
Subject: Query re `arc'
Message-ID: <93.UUL1.3#5127@aladdin.com>
Date: 20 May 91 17:34:19 GMT
Organization: Aladdin Enterprises, Menlo Park, CA
Lines: 16

The PostScript specification trivia question for today:

If you ask a PostScript engine to draw a zero-degree arc and there is
no current point, does the arc operator just do a moveto, or does it
do a moveto and then draw a zero-length line?  It makes a difference,
because if you've selected non-round caps and round joins, 'stroke'
will give no output if arc does the former, whereas the latter will
draw a dot.

Since this isn't culled out as a special case in the Red Book, I
suspect the latter is the correct interpretation, but it would be
nice to know for sure.

L. Peter Deutsch :: Aladdin Enterprises :: P.O. box 60264, Palo Alto, CA 94306
ghost@aladdin.com ; ...decwrl!aladdin!ghost ; (415)322-0103 <<< new phone #
	    "Implementation is the sincerest form of flattery."