# \#rectangular-shapes

**URL:** https://discourse.vtk.org/tag/rectangular-shapes/31.md

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## [Constrained vtkDelaunay2D, failure with 3 holes \[use vtkContourTriangulator instead\]](https://discourse.vtk.org/t/constrained-vtkdelaunay2d-failure-with-3-holes-use-vtkcontourtriangulator-instead/14834)

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**Author:** [@ugis](https://discourse.vtk.org/u/ugis)\
**Replies:** 7\
**Last updated:** [November 15, 2024, 1:20pm UTC](https://discourse.vtk.org/t/constrained-vtkdelaunay2d-failure-with-3-holes-use-vtkcontourtriangulator-instead/14834 "2024-11-15T13:20:31Z")

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Dear developers, \[testing in Python 3.12.7 with VTK 9.3.1\] I am testing how to put surfaces with holes on screen in VTK. I am using constrained vtkDelaunay2D filter to generate the triangulations such that the surface …