Get Indices Of Verts On An Edge?

[phil-sloggett]

hey guys Im trying to iterate over all my edges and cant see a quick light way of getting the indices of the verts connected to a given edge. There are methods on the mesh edge iterator for querying vert position but not indices? Am I overlooking something simple here?

[rob-bateman]

int MItMeshEdge:: index ( int index , MStatus * ReturnStatus );

use 0 or 1 for the index and it will return the vertex indices.

[phil-sloggett]

Im an idiot. thanks heaps rob!

[nickblock]

I have a problem similar to this. I am ultimately trying to get the vertex colors of the chosen edges. In MItMeshEdge you can get the indices of the vertex and the indices of two faces. However when i try to get the color using MFnMesh it provides only a function requiring a face and the localised vertex. There is also no function for geting all the vertex-face colors for a single vertex, only the average color (isn't there?). I have managed to get all the face-vertex colors from selected faces, verts, and face vertex, but am having trouble with these edges. Any ideas?

[keilun]

Not sure I understand the issue.

Colors are per face vertex assignments similar to the way UVs work. There is no color data per edge. You could interpret the edge color as an interpolated result of the two end vertices.

If you want to get all the face-vertex colors given a vertex id, there's no convenience method to do this, but you could write this yourself by decomposing a vertex into its constituent face-vertices.

Hope that helps. Not sure if I answered your question though.

[nickblock]

Sorry yeah i was just trying to get the vertex colors for the two verts making up the edge. I think the main cause of my confusion is the relationship between the various face and vertex colors.
I can see now that each face potentially has a unique color for every connected vertex. And every vertex in turn can have a unique color for every face it's connected too. So both faces and vertices share multiple color indices.
I am still having some difficulty i think with the basics of the API though. I have an edge selected and can get the 2 vertIDs from the MItMeshEdge iterator. How can I get an iterator for MItMeshVertex so i can find these vertices with my vertIDs, and access their vertex color indices? I dont seem to be able to create a MItMeshVertex iter from the same component nor from the MFnMesh node I have.
Thanks for your help so far, think I'm getting there!