# Constrained vtkDelaunay2D, failure with 3 holes \[use vtkContourTriangulator instead\]

**URL:** <https://discourse.vtk.org/t/constrained-vtkdelaunay2d-failure-with-3-holes-use-vtkcontourtriangulator-instead/14834>\
**Category:** Development\
**Tags:** rectangular-shapes, python, code\
**Created:** [November 7, 2024, 11:15am UTC](https://discourse.vtk.org/t/constrained-vtkdelaunay2d-failure-with-3-holes-use-vtkcontourtriangulator-instead/14834 "2024-11-07T11:15:57Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![ugis](https://discourse.vtk.org/user_avatar/discourse.vtk.org/ugis/32/6790_2.png) [@ugis](https://discourse.vtk.org/u/ugis)\
**Post date:** [November 14, 2024, 9:54am UTC](https://discourse.vtk.org/t/constrained-vtkdelaunay2d-failure-with-3-holes-use-vtkcontourtriangulator-instead/14834/2 "2024-11-14T09:54:51Z")

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Hi again,

week has passed but I have had no reactions on this topic. Perhaps you are very busy, but I would appreciate at least some sort of reaction (is/isn’t bug, plans/no-plans to fix it, maybe some robust workaround exists)?

@will.schroeder , perhaps you have any ideas, you have provided previously very good insight about tessellation and rendering to me [here](https://discourse.vtk.org/t/concave-polygon-issue-with-solid-representation-and-vtkdelaunay2d/9823). Or perhaps @amaclean , @lassoan , @Paulo_Carvalho (I have seen you guys in forum talking about vtkDelaunay2D filter in different occasions)?

Best wishes,  
Ugis

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_[View the full topic](https://discourse.vtk.org/t/constrained-vtkdelaunay2d-failure-with-3-holes-use-vtkcontourtriangulator-instead/14834)._