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    • Henry Weller's avatar
      isoSurface: Fix for isoSurface 'eroding' surfaces down to nothing · 9580a0e2
      Henry Weller authored
      The occurrence is from cells with vertices that are shared between two faces
      only (these vertices can originate from hex refinement). Decomposing both faces
      can occasionally produce triangles with identical vertices and this results in a
      non-manifold edge which triggers the erosion procedure.
      
      Avoided by detecting cells with these special vertices and making sure the tet-decomposition
      never uses the same points on the faces using them.
      
      Patch contributed by Mattijs Janssens
      9580a0e2