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Scratch Pad Exploration of a single feature or technique, illustrated with user examples

Stuff you can do with clouds

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  #11  
Old 01-22-2005, 09:19 AM
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Doug Nelson Doug Nelson is offline
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Axleuk:

Unfortunately, many of the filters apply directional lighting of some sort, making tiles problematic (but not impossible, I'm open to suggestions). But these effects are resolution independent, so you could make one so big tiling was unnecessary.
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  #12  
Old 01-22-2005, 09:31 AM
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Doug, that last texture looks to me like Skittle that have be thrown on the floor and got caught in the rain.... I love it !!
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  #13  
Old 01-22-2005, 10:33 AM
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I have even less of an idea on this one, but it started with the same clouds. I remember there was a stained glass filter in there somewhere, and difference clouds, and it ended with plastic wrap, but I think there were 3 or 4 more other steps that I've forgotten.
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  #14  
Old 01-22-2005, 11:14 AM
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Doug, dammit, GO AWAY!
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  #15  
Old 01-22-2005, 11:19 AM
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Very cool. And I'm glad to hear I'm not suffering alone
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  #16  
Old 01-22-2005, 11:44 AM
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Quote:
Originally Posted by kiska
Doug, it seems you have found your own personal version of the addictive kaleidoscope.

kiska

LOL, I agree! Love all the results, especially the vibrant stain glass one by Doug, and the brightly colored one by kiska.
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  #17  
Old 01-22-2005, 03:09 PM
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Accented edges, highpass sharpen, then I made it a seamless tile (just for fun).
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Last edited by Doug Nelson; 01-22-2005 at 03:22 PM.
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  #18  
Old 01-22-2005, 03:31 PM
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Clouds/Difference Clouds is basic mid-point displacement and is fractal. Although, I'm not sure how the interations are handled. Clouds/Difference Clouds will tile for powers of 2 because of the nature of the algorithm. X and Y are independant, so 128x256 will also tile. I saw the proof for this once when I was doing research into Perlin, Veronelli, and Worley. It's a calculus thing.

Even though it is already fractal, you can add 'more fractalness' to Clouds.

New layer and Clouds/Difference Clouds to taste.
Another layer and Clouds/Difference Clouds to taste.
Set the second layer to Linear Light and set Opacity to 50%.
Another layer and Clouds/Difference Clouds to taste.
Set this layer to Linear Light and set Opacity to 25%.

You should end up with something like Clouds, but a little bit different.

Of course, you don't have to use Linear Light. Try other blending modes.

Also, you can also toss in other filters in the same manner.
For example, High Pass at 8 on the bottom layer, then High Pass at 4 on the next layer, and so on.
Or Gaussain Blur in the same manner.

Might be a good idea to Auto Level after various things to help keep the highs high and the lows low. Or fade Auto Levels. Or no Auto Levels at all.

I've used the High Pass variation for some veined marble type stuff. Small veins and bigger veins. Very cool.

With the Gauss variation and some masking action, you can get some good looking clouds. Like, clouds in the sky.

Clouds/Difference Clouds is also a good start for Perlin Noise.
Do a layer with Clouds/Difference Clouds to taste.
Make sure interpolation is set to some flavor of bi-cubic.
Free Transform the Clouds down to 10% or so.
Free Transfrom it back up to original size.

Last edited by Stroker; 01-22-2005 at 03:37 PM.
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  #19  
Old 01-22-2005, 03:53 PM
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Chrome stacked with Accented Edges, color balance, sharpen, seamless.

Am I the only one that finds this interesting to do?
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  #20  
Old 01-22-2005, 03:55 PM
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Stroker, good info, thanks.
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