[vtkusers] get normal vector of point

[Sugeng Waluyo]

Hi everybody,

I want to get normal vector of point around a cell/polygon in my  vtk class.

I suppose that everypoint has normal vector as well which is calculated from
cell's normal vector around that point.


I dont know if vtkPolyDataNormals can do that because my vtk class is
derived from vtkDataSetToPolyData.
What I know is vtkPolyDataNormals can take only polygonal data input not
vtkDataSet input.

Thanks in advance.

regards,
sugeng
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