CGTalk - sample color value on surface

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misterwolfy

09-28-2010, 11:08 AM

is it possible to sample the color value on a surface or texture, so that those values can be converted to data? So, for instance, if I had a checkerboard texture applied, the black values could be used do set an attribute to 0 and the white could set an attribute to 1. Would be most interesting if I could sample the values across a surface somehow, so that I could read various values depending on what part of the surface was sampled.

Could a value be queried at a UV?

Thanks a lot for reading.

bendingiscool

09-28-2010, 11:23 AM

Take a look at the 'colorAtPoint' command, it does just what you are after..

cheers,
Chris

misterwolfy

09-29-2010, 05:03 AM

Ding ding ding, correct.

Exactly what I needed.

Thanks!

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09-29-2010, 05:03 AM

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