Tiling procedurals and Placement mapping
A little trick, pretty simple, but maybe not very obvious. To create coarse surfaces, detailed textures and other high frequency stuff we often use fractal or noise with high value of repeat, that leads to visible tiling:
Fractal with high repeat value reveals tiling
We can try to mix it with other noises, but there is a better solution…
Attributes of place2dTexture could be mapped, i.e. placement of already tiled noise could be shifted by another noise. In this case I used two fractals with animated turned on and different time values for U and V channels of translateFrame:
Two different fractals drive translateFrame for another fractal
As a result, tiling is gone:
Visible tiling is eleminated by translateFrame mapping
Repeat of these two fractals should better be left as 1 1, but main one can be modified freely, for example, here’s the result of repeat 1 1 set for it:
Fractal with one repeat still broken by two other fractals
Example scene: 08_proctiling_01.rar
Futhermore, via placement mapping we can remap textures, redefining uvCoord values (traditionally red is U and green is V):
Circular checker via radial ramp
Example scene: 08_proctiling_02.rar
Messed up grid
as well as a lot of funny and weird patterns 🙂
Cloth remapped with water
Checker remapped with cloth
Grid remapped with fractal and circular ramp
Bulge remapped with bulge
In: Render · Tagged with: fractal, maya, noise, pattern, place2dTexture, placement, procedural, remap, texture, tiling
on 5 July 2009 at 13:37
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респектыбл )
on 8 July 2009 at 3:08
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This is a very cool tip. However, I wonder you connected the “time” or “outalpha” of 2 fractures to “translateUV”? Cause when I try with the “time”, I still see the tile but when I try the “outalpha” the tile disappear and got the same result like yours. But, when I change the “repeat” UV back to 1:1 (the main fracture). I don’t have the same result like yours.
I wonder if you don’t mind upload your scene so I can compare. Because so far, I don’t see I didn’t anything wrong with the connection.
Thank you.
on 8 July 2009 at 3:29
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It’s outAlpha, of course. It’s shown on the second picture here. I modify ‘time’ just to make those two fractals different from one another or you’ll get diagonal patterns.
No problems, here’s the scene:
08_proctiling_01.rar
on 7 February 2010 at 18:21
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Could you explain how you get the circular checker? I can’t figure it out. When I try I get something similar but it’s not like yours. It seems you are blending something in the ramp. If you could post the scene would be cool. By the way this is a really cool trick with the remapping.
Cheers Nico
on 7 February 2010 at 20:09
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Sure, here’s the scene with circular checker:
08_proctiling_02.rar
on 7 February 2010 at 23:09
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Aah the color offset. Ok thanks man.
on 16 April 2011 at 0:56
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Sagroth, опиши пожалуйста подробней как делался Bulge remapped with bulge, что куда соединять.
on 16 April 2011 at 1:54
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Боюсь я сейчас уже не вспомню… А сцены не осталось 🙂
on 8 July 2011 at 0:16
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hey mate, bulge remapped with bulge is amazing! how did you do that?
on 8 July 2011 at 4:54
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I fear I’ve lost this scene 🙁 Besides that, it’s just a displacement 🙂
on 29 March 2012 at 6:01
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Very interesting. Thanks.
on 29 November 2013 at 21:37
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Thanks man!! great example! useful a lot :D!!