[vtkusers] triangle strip and normals in vtk file

[Randy Dawson]

I am writing a vtk file to output geometry from another (not vtk)
application.

I am looking at the brainsmooth.vtk example file and it ends with
normals for each point.

1.  How can you specify a valid normal for a point - in a triangle strip
it will be (posibly, unless coplanar) 2 different values depending on
which triangle is associated with the node?

2. why do you need normals at all, aren't they implied by the winding
order of the triangle strip?

Randy Dawson