[vtkusers] Compute area from point cloud

[Laurent]

Hi all,

I have a point cloud that is contained by a plane. I'd like to get the area
of the described surface.
I tried using vtkMassProperties, but I have to pass it triangles and not
Points. If I first create triangles using Delaunay2D (different values for
alpha and offset), I get badly generated triangles when my surface is
concave. And it is very often!

Is there a way
- Either create properly generated triangles
- Compute area from points

Thanks,
Laurent.

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