how to sample image file pixels?

[jfrancis]

Within the rendering context, I think you can do this (http://www.digitalartform.com/archives/2005/01/sample_a_maya_f.html):

Outside the rendering context, I'm not sure.

This issue should be a no-brainer, but for some reason it's much harder than it should be.

[MattBirkett-Smith]

I think you want the command colourAtPoint :

colorAtPoint -o RGB -u 0 -v 0 file1;



which could be used something like:

float $colour[3] = `colorAtPoint -o RGB -u $U -v $V $filename`;

where $colour is an array containg the RGB values, $U is the wanted $U cord, $V is the wanted V cord and $filename is the name of the file texture.


Hope this helps

[Nicool]

If you want an example of use of colorAtPoint, I've coded a script using it : mapSpread.mel (you could find at http://ndhaussy.free.fr//temp/spreadArticle/#mapSpread )

[jfrancis]

I upgraded directly from Maya 4 to 6. Is that why I missed this command, or has it been there all along?

At any rate, I'm glad I revived this 2002 thread. Very educational for me.

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