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View Full Version : rub through in 3D paint?

sharktacos
02-26-2008, 09:45 PM
I'm looking for a 3D painting software or plug-in that has the ability to do "rub through".

The basic way this works is you have an image on a plane that you place in front of the geometry you wish to paint on. You can then size, position, and rotate the image and then when you paint onto the 3D geometry the image in front of it is projection painted on to it, as if you were rubbing it from the image onto the geometry.

Does anyone one know of any software or plug-ins that can do this?
leigh
02-26-2008, 10:57 PM
You can do something similar to that in ZBrush. Although I am not 100% sure of what you mean by "rub through", so I can't say for sure if ZBrush is the right solution for you. With ZBrush, you can create a plane with the texture image, then scale, rotate and distort the image, and then "drop" (ie project) it onto the geometry.

Alternatively, Maxon's Bodypaint can snapshot the viewport into an image which you can take into Photoshop and paint onto, and then return the image to Bodypaint to be projected onto the geometry as it appears in the viewport.
sharktacos
02-27-2008, 06:48 AM
Hi Leigh,

The first part sounds right about "a plane with the texture image, then scale, rotate and distort the image, and then..."

But the idea of "dropping" (ie project) it onto the geometry" does not sound quite like what I mean. See if this helps. You have a picture of macaroni on the plane over your geometry. You then draw a triangle onto your geometry. Where you drew the triangle, there is now the macaroni pattern on your model's surface. So it's not dropping the whole image, it is projecting it through just in the areas where you paint.

The advantage of this technique over the method you describe in your Maxon/Photoshop example is that with rubbing you are able to constantly be repositioning both your image plane and your geometry to rub through different bits from your image onto different areas of your model from different angles giving you really complex results very quickly.
sharktacos
02-28-2008, 01:24 AM
bumping thread...
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leigh
02-28-2008, 12:55 PM
To be honest, I can't think of a technique of piece of software which does exactly what you're describing. Obviously you could achieve the desired effect using another technique though. But the method you're describing isn't facilitated by any piece of software that I know of.
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02-28-2008, 12:55 PM
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