Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!newsfeed.tele2net.at!news.panservice.it!feed.xsnews.nl!border01.ams.xsnews.nl!feeder01.ams.xsnews.nl!feeder03.ams.xsnews.nl!frontend-F09-09.ams.news.kpn.nl From: Cecil Westerhof Newsgroups: comp.lang.postscript Subject: Re: Correct or error in GhostScript Organization: Decebal Computing References: <87oaukle4g.fsf@Equus.decebal.nl> X-Face: "(y8cC@tg_12{">GF'UXTW]FHI2wMiZNrnf'1EFQ&O#$m:f#O7+7}kR,v+Pti8=Vi/Z"g^?b"E X-Homepage: http://www.decebal.nl/ Date: Sat, 13 Sep 2014 01:17:22 +0200 Message-ID: <87k358l98d.fsf@Equus.decebal.nl> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.2 (gnu/linux) Cancel-Lock: sha1:B9+eYgfX2U8Tkc2a7EgDX1nl4gQ= MIME-Version: 1.0 Content-Type: text/plain Lines: 29 NNTP-Posting-Host: 77.171.42.144 X-Trace: 1410564643 news.kpn.nl 20756 77.171.42.144@kpn/77.171.42.144:33641 Xref: csiph.com comp.lang.postscript:2043 Op Saturday 13 Sep 2014 00:12 CEST schreef Scott Hemphill: > Cecil Westerhof writes: > >> This produces nothing: >> 30 30 10 360 0 arc stroke >> >> While this draws a circle: >> 30 30 10 0 360 arc stroke >> >> Is this correct, or is it an error in GhostScript? >> I am using Ghostscript 9.06. > > It's probably correct, or the operator "arcn" wouldn't exist. But: 30 30 10 360 90 arc stroke does draw a quarter circle. Maybe from the first parameter 360 is subtracted until it is lower as 360 (or lower equal the second parameter). Then it becomes: 30 30 10 0 0 arc stroke and that would not draw anything. -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof