Get Face Color

[forgiven-god]

Hi there, I'm a newbie when it comes to MEL scripting, and after a LOT of web research, I'm posting here claiming for help:
What I'm trying to do is to get color and transparency values for selected face.
I'm building a geometry exporter and it would be fine to be able to export face color and/or transparency!!
Thank you very much for your reading!

[dbiggs]

In Maya colouring is done by vertex or vertex-face components, never for the entire face. To query a vertex colour or vertex face colour use the command

for a vertex
polyColorPerVertex -q -r -g -b -a pCube2.vtx[0]
or for a vertex face
polyColorPerVertex -q -r -g -b -a pCube2.vtxFace[0][0]

Hope that helps you.

[forgiven-god]

Hi, thx for your answer, but I just can't get it working....
I don't know what I'm doing wrong, but when I used polyColorPerVertex, I always get this result: 0 0 0 1
I've tried to build a Cube, painted it pure Blue with a new lambert, and then execute the code like this:

$xxx=polyColorPerVertex -q -r -g -b -a pCube1.vtxFace[0][0];
And it returns 0 0 0 1......it should be 0 0 1 1, am I wrong?
I've read trough Maya help, and it says this function returns a boolean, but....what does it mean?? I'm a bit lost....
Also, I've seen an interesting function, polyGeoSampler....it looks what I'm looking for, but I just can't get it working too.....

Please, help!!
Thanks!

[dbiggs]

Ahh!! you're going about it the wrong way, coloring faces/vertices is done with the
vertex colouring tool which is in
Edit Polygons->Colors>Paint Vertex Color Tool...

the command I gave you before will query whatever colour you've painted a vert.

To query a shader color is a whole different ball game, and I'm not sure thats what you want to do.....

[forgiven-god]

Hi!
Well, it really is what I want to do, and I finally got it!
What I did is this:
I query if selected face is memeber of which shader group;when it finds the one who belongs, I query color properties and alpha values for the material of that shader group.....
Well, maybe i'm going the way around, but it works fine!
Thank you very much for your support!