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- Path: EU.net!sun4nl!xs4all!marketgraph!rvg
- From: rvg@marketgraph.xs4all.nl (Ruud van Gaal)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: AnimBrush format
- Message-ID: <0922sbx60.alamito@marketgraph.xs4all.nl>
- Date: Mon, 19 Feb 96 18:34:09 CET
- References: <684.6616T1337T2030@amiga.pp.se> <898.6618T607T1757@manawatu.gen.nz> <832.6620T1415T621@amiga.pp.se>
- Reply-To: rvg@marketgraph.xs4all.nl
- X-Newsreader: Alamito Mail and News Manager (V2.0.4 for Waffle) registered to MARKETGRAPH VISUAL AUTOMATION
-
- In <832.6620T1415T621@amiga.pp.se> mikael.berglund@amiga.pp.se (Mikael
- Berglund) wrote:
-
- >In a message 14-Feb-96 01:17:48 Damon Davies <kurg@manawatu.gen.nz> wrote:
- >
- > DD> Yes!, a normal anim has its deltas calculated from the delta two before
- > DD> it for the purposes of double buffered display. An animbrush has its
- > DD> delta calculated from the one directly before it.
- >
- >Hmm, i think i tried this with the anim and it didn't work. I tested this:
- >decode frame 1, modify with delta 1. It didn't show a proper picture. It
- >looked similar to the 'normal approach' decoding but not exact.
- >
- >Talked to Weber and he said it worked with old DPaint animbrushes and that
- >he had to do some special XOR trick to get it to work.
-
- I too believe the AnimBrushes uses XOR-ing instead of just poking. The reason
- for this is that it enables AnimBrushes (and DPaint internal anims) to
- flipflop. It's quite simple; instead of your MOVE use XOR, i.e. don't hard
- poke the value, but XOR it with the original data. That's the only
- difference.
-
- --
- Ruud van Gaal
- MarketGraph Visual Automation
- E-Mail : rvg@marketgraph.xs4all.nl
- DoomShell 4.5 homepage: http://www.xs4all.nl/~jwkorver
- "...Works fascinates me. I could sit and watch it for hours..."
-
-