I'm learning maya and wonder what attribute/node is vertices selection stored in when using tools. For example, I select some vertices, do merge vertices (w/ construction history on). Now I see a polyMergeVert input node into my poly object.
Now what if I want to edit the vertex selection that pipes into polyMergeVert? I can't find how the selection was transferred into the polyMergeVert. Does a script node or script job help? I'm new to mel so i'm clueless.
If this seems vague, I'm looking for a way in maya similar to the selection modifier in 3dsmax. In max, a volume shape or manual selection of vertices is stored in the selection modifier. The 'volume shape' can be animated to move into a mesh, causing the 'touched' vertices to become selected. It's commonly used for like expanding vertex colors, bulging, animated deletion & lots more fun effects.