### Description
This example uses vtkMassProperties to compute the volume of a closed mesh. vtkmassProperties requires triangles with consistent ordering. This example uses vtkFillHolesFilter and vtkTriangles to ensure a closed, triangulated mseh.

If run wth no argumnets, a vtkSphereSource generates the vtkPolyData. Of given a file containung vtkPolyData, it computes that data's volume and surface area.

!!! cite
   [(Alyassin A.M. et al, "Evaluation of new algorithms for the interactive measurement of surface area and volume", Med Phys 21(6) 1994.)](https://www.researchgate.net/profile/Abdalmajeid_Alyassin/publication/15264446_Evaluation_of_new_algorithms_for_the_interactive_measurement_of_surface_area_and_volume/links/5497dff10cf29b944826369a.pdf)

