[vtkusers] Enlarge model lead to hole

[donyyo]

Hi,
I want to enlarge a model while the adjacent model keeps still. If collision
happen (the distance of the vertex in the moving model to another model,
calculated by FindClosestPoint(), is smaller than some value), the collision
vertex will stop while the other vertices keep moving. However, the cells
containing the collision vertex don't connect to the adjacent cells and some
holes apper (showed in the attached image, the red model is enlarged). How
can I fix it?
By the way, how to calculate the distance between a vertex and the surface
of the adjacent model along the normal direction?
Thank you!

Dony

<http://vtk.1045678.n5.nabble.com/file/n5718120/test.png> 



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