Re: [PD] pd and IFS

[marius schebella]

marius schebella wrote:

chi ball wrote:

Thank's, I have interest mainly in a fractal music, more than in graphic, so would be sufficient a numerical output.

t.

mybe this is useful for you, too (from the pd archive).

http://lists.puredata.info/pipermail/pd-list/attachments/20061209/18949493/linden-0001.tgz

marius.

hi chi ball,

see the attached patch. it is using the sierpinski rules found at http://en.wikipedia.org/wiki/Lindenmayer_system.

but as claude said, this method eats a lot of cpu.

marius.

if you want to do such things for graphics, you should use a shader. but then you cannot read back the positions, so for fractal music, maybe this method is more helpful.

_________________________
 > Date: Thu, 14 Aug 2008 23:43:16 +0100
 > From: [EMAIL PROTECTED]
 > To: [EMAIL PROTECTED]
 > CC: pd-list@iem.at
 > Subject: Re: [PD] pd and IFS
 >
 > chi ball wrote:
 > > Hi,
 > > is there a patch using Iterated Function Systems (IFS) ?
 >
 > You want to implement an IFS in Pd?
 >
 > I think that's a bad idea (unless you want it to be very slow, passing
 > messages between different objects is not something you want to do
 > 100000+ times per frame).
 >
 > Having said that, I did try it, but didn't have much luck: I did
 > something like:
 >
 > [gemhead]
 > [t a a a]
 > [GEMglEnd] [repeat 10000] [GEMglBegin]\[glDefine GL_POINTS]
 > ...
 > [GEMglVertex3f]
 >
 > but I got GL errors and no image, can't remember the exact message now
 > though.
 >
 >
 > On the other hand, you can do some fun things with texture feedback
 > quite efficiently:
 >
 > http://claudiusmaximus.goto10.org/files/video/puzzle.ogg
 >
 >
 > Claude
 >


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