Friday, May 28, 2010

Perlin Noise



Okay, so messing about with BitmapData inevitably led to learning about Perlin Noise. Named for Ken Perlin, a VFX fellow, it is used to procedurally generate textures in an organic way. I'm still trying to wrap my head around how exactly to use it, but the above is my first baby step into transforming a Perlin field...next step is to apply that field to something else!
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3 comments:

  1. JayMay 28, 2010 at 1:18 PM

    There is something weirdly organic about it --almost slug like. Nifty!

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  2. kylemain53May 28, 2010 at 4:32 PM

    Is this using bitmap shifting?

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  3. CoreyMay 31, 2010 at 7:03 PM

    Kyle, what I'm essentially doing is filling the entire stage with Perlin noise. I'm then incrementing the "seed" of the Perlin noise as well as the offsets. And then yes, I'm redrawing the BitmapData. I'm not actually altering the BitmapData itself - rather I'm generating a new Perlin noise and swapping out the BitmapData with a snapshot of it.

    http://polygeek.com/1780_flex_explorer-bitmapdata-perlin-noise

    There's a nifty little tutorial that lets you play with some of the parameters of the noise. It can be a lot of fun, but hard to figure out if you don't have an example to check out.

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