[vtkusers] How to have vtkCells refer to the same vtkPoints array?

[Robbie Jaeger]

Hello,

I am creating an unstructured grid that contains all cells and would like to
define all of my vtkPoints first, and then create cells that refer to these
points (create nodes, then elements from nodes).  Is this possible?

Currently, I am having to create points for each cell separately, which I
believe to be inefficient since some cells share points.

Thanks,
Robbie
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