[vtkusers] how to color a mesh by scalars of cell normals?

[Terence Lim]

Hi,

Does anyone know a way in which I can color the cells of my resulting
polygonal mesh by the scalars generated by the normal of each cell? I think
I know how to get the scalars but I do not know how to use these scalars to
color my resulting mesh.  Here is what I have so far:


vtkPolyDataNormals *pdn = vtkPolyDataNormals::New();
pdn->SetInput(Delaunay->GetOutput());
pdn->ComputeCellNormalsOn();
float scalar_value_of_some_id =
pdn->GetOutput()->GetCellData()->GetScalars()->GetScalar(someid);

Thanks in advance for any hints,

Terence Lim