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Stability fixes in vtkCurvatures

Yohann Bearzi (Kitware) requested to merge yohann.bearzi/vtk:min_max_curvature into master

H : mean curvature - K : Gaussian curvature

  • min and max curvatures were wrongly assigned to 0 when H^2 - K < 0 They are now assigned to H, as it is the best estimate we can give it in such instance. A warning is thrown if H^2 - K is highly negative.

  • Angle computations when computing the gaussian curvature now use the more stable vtkMath::AngleBetweenVectors

Edited by Yohann Bearzi (Kitware)

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