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Created by ym jia@jym

Filter Gaussian Curvature get wrong results

To reproduce:

  1. Sources -> Box
  2. Filter -> Triangulate
  3. Filter -> Curvature

Gaussian Curvature of points in the corner of the cube should be PI / 2, it gives 28.274334

If we set properties(X/Y/Z Length) of the Box to 0.01, result becomes 282743.351463

I have checked the source in vtkCurvatures.cxx line 289, curvature assignment is gaussCurvatureData[v] = 3 * K[v] / dA[v] in which dA is total area of the neighboring triangles. This devision makes no sense in gaussian curvature computation (2 * PI - total angle).

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