Path: csiph.com!weretis.net!feeder6.news.weretis.net!feeder7.news.weretis.net!news.szaf.org!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Richard Ashbery Newsgroups: comp.sys.acorn.programmer Subject: Re: Rotating a Colour-Filled Square Date: Sat, 16 Nov 2019 14:05:10 +0000 (GMT) Organization: None Lines: 34 Message-ID: <5813da3ab9basura@invalid.addr.uk> References: <5811cae024basura@invalid.addr.uk> <58124834ffbasura@invalid.addr.uk> <58125f40fdbasura@invalid.addr.uk> <5812df5497basura@invalid.addr.uk> X-Trace: individual.net /YQCBQxLf6xMAEx/LwT8tASsqRpQCDLDpaxKwBy6gY1EECZ24S X-Orig-Path: uwclub.net!richard.ashbery Cancel-Lock: sha1:20M43kNtcWI7cBJlYoODyOu5F3s= User-Agent: Pluto/3.16 (RISC OS/5.25) NewsHound/v1.52-32 Xref: csiph.com comp.sys.acorn.programmer:5880 In article , Sebastian Barthel wrote: > Am Fri, 15 Nov 2019 22:23:14 +0000 schrieb Sebastian Barthel: > > Am Thu, 14 Nov 2019 19:29:44 +0000 schrieb Sebastian Barthel: > > And - to complete it a little bit more - here is the variant with > > TRIANGLEs as proposed by druck. I seems Druck was right in that PLOTting with triangles is a much better solution and avoids the dreaded FILL command. Just a few other points: I only use my Raspberry Pi with res of 1920 x 1080. If I use your MODE (1280,1024,8) sure enough it works but I get severe breakup of the pattern. I've had to slow the shadow memory down somewhat by placing a a large (2cS) delay for MODE 1280,1024,8 and a much shorter delay for MODE 1920,1080,8 between SYS "OS_Byte",112,SCREENBANK% and CLG. Curious - what advantage is there in using SYS "OS_Plot" over plain old PLOT 85? All we need now is some music - what about "The Blue Danube" by Strauss or something from Holst, "The Planets" ;-) Overall an extemely effective but simple pattern :-) Well done Sebastian. Best regards Richard