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Decals question with Rhino 5

Posted: Sun Dec 30, 2012 9:46 am
by Alex123
Hi,

I couldn t find a topic about it in the forum. My question is how to I avoid having a decal projected on the backface of my geometry.

thanks

Image

Re: Decals question with Rhino 5

Posted: Sun Dec 30, 2012 4:07 pm
by JDHill
The texture is located by UV coordinates, so what you want to do is to avoid mapping it to both sides of the object. Therefore, you need to use a mapping with spherical, cylindrical, or cubic (using divided texture space) projection. The last option can produce a one-side planar projection, but requires editing the texture map -- the explanation of this is better in the V4 help than the V5 help. Basically, divided texture space expects a map that is six times wider than it is tall; each of the six width-wise regions are mapped to a different side of the box, with the order being: front, right, back, left, bottom, top.