Re: plasma clouds algorithm ?

From: Roger Bagula (tftn_at_earthlink.net)
Date: 11/17/04

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    Date: Wed, 17 Nov 2004 22:36:38 GMT

    Paul Bourke has an extensive area on this kind of stuff .
    Here's one that might help:
    http://astronomy.swin.edu.au/~pbourke/terrain/freqland/
    I've also seen some Mathematica programs that do this kind of Algorithm
    as well.
    anastasiA wrote:

    >Hello.
    >
    >I've been looking at FAQ's all over the net and I cannot get a
    >decent plasma cloud algorithm. FAQs are getting old, links to programs
    >their refer to are gone. And all I could get was that you start from
    >the four corners on a image, pick random colors for each of them and
    >recurse. This isn't very clear to me as to how the magic happens.
    >
    >Say my square goes from (0,0) to (1024, 1024). In the next step, my
    >target square is now (0,0) - (512,512). What do I do with the color
    >already assigned at (0,0) ? Pick up a new color and average it with the
    >new ? This tends to produce darker colors at each iteration. Do I need
    >to take into account the surrounding pixels? At this point of my
    >algorithm,(0,1) is unassigned(or has a default black or white pixel).
    >When will (0,0) take into account it's neighbors to make it seemless
    >since (0,1) can be anything at this point?
    >
    >I am missing the logic of this. Any help or link to existing
    >(and current) tutorials will be greatly appreciated.
    >
    >Thank you.
    >
    >--
    >a.
    >
    > 

    -- 
Respectfully, Roger L. Bagula
tftn@earthlink.net, 11759Waterhill Road, Lakeside,Ca 92040-2905,tel: 619-5610814 :
alternative email: rlbtftn@netscape.net
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