smtk::mesh::ExtractTessellation: use hash map for point id lookup
The method smtk::mesh::PointSet::find is extremely slow, and should be used only as a last resort. This commit replaces a call to find() within a tight loop with the construction and repeated query of a hash map. NOTE: with this update, the mesh session now loads large datasets as quickly as the VTK session.
Showing with 17 additions and 10 deletions