Hi, after destroying several rigs to try to save blendshapes, I discovered how useful can be the tool called "Transfer Vertex Order" to re order vertices. Investigating a little further, it's a tool that they put it in Maya 2017, but in this year's version they improved it quite a bit. It is somewhat difficult to use and in certain cases can cause Maya to shut down unexpectedly. It works as follows.
- First we must verify that both meshes have the same amount of vertices and edges, also we must verify that they have exactly the same topology.
- Make sure you have saved your file, as the tool is a bit unstable.
- Select both meshes and go to component mode.
- Now we go to the menu "Mesh"--> "Transfer Vertex Order.
- Select 3 consecutive vertices or vertices that form a triangle within the source mesh, then select another 3 vertices of the target mesh that are in the same position as the vertices of the source mesh.
- You should see the following message
The tool as I said before is somewhat unstable, but it is quite useful when rescuing blendshapes from the same modified geometry.
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