[vtkusers] Volume calculation

[Ursula Kretschmer]

Dear VTK list,

I would like to calculate the volume of a triangulated body. To test my 
algorithm I have built up a cube with an edge length of 1. The 
vtkPolyData object which represents my cube consists of 8 points and 6 
polygons. It is transformed by vtkTriangleFilter and then passed to 
vtkMassProperties. With the method vtkMassProperties.GetVolume() I would 
like to calculate the volume of the cube. Unfortunately the result is 
0.6 instead of 1.0.

Does anybody have an idea what I did wrong? I already checked the 
direction of the polygon normals.

I am using VTK with C# using the vtkDotNetWrapper.

Thanks in advance for any advice,
Ursula
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