VertexColor Problem with MPxDeformerNode (Maya c++)

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  06 June 2013
VertexColor Problem with MPxDeformerNode (Maya c++)

Hello,

In maya, i manipulate vertex color inside a MPxDeformerNode.
Actually the code modify the colorVertex and modify the position of the vertex.
But when i play with the parameter of the node the color don't change but for the deformation it's ok.


      MColorArray colours;
      MIntArray vertexInd;
   
      for ( ; !iter.isDone(); iter.next()) {
  
      		MPoint point = iter.position();
      		MPoint newPoint = iter.position();
      
      		//modify the y value of the point
      		newPoint.y +=myParam;
      
      		//modify the r value of the vertexColor
      		colours.append(myParam, 0, 0, 1); 
      		vertexInd.append(iter.index());  
      
      		iter.setPosition(newPoint);
  
      }
     
      MArrayDataHandle outputArray = block.outputArrayValue(MPxDeformerNode::outputGeom  , &returnStatus );
      MDataHandle outPut = outputArray.inputValue(&returnStatus );
      MFnMesh myMesh ( outPut.asMesh());
   
      myMesh.setVertexColors(colours, vertexInd); 
      outPut.setClean();
      

For sure, i'am doing something bad or in a wrong way, but i don't know what. Someone have an idea?
Thanks
 
  06 June 2013
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