[vtkusers] InterpolateScalarsBeforeMapping problem

[Olivier Feys]

This is working,

sorry


Olivier Feys wrote:

> Dear all,
>
> I'm using vtk to display Finite Element results on meshes. It is 
> highly important that the colors displayed at each pixel correpond to 
> the scalar value interpolated at this point.
>
> I can't see any difference when I set 
> InterpolateScalarsBeforeMappingOn and SetColorModeToMapScalars. I get 
> the same results when the colors are being interpolated.
> When a triangle is being displayed, I want that the color at each 
> pixel inside the triangle corresponds to the scalar value 
> interpolated. So I suppose it would be slower because we must pass 
> through the lookup table for each pixel.
>
> Can anybody show me an example where a scalar field is being displayed 
> using a vtkUnstructuredGrid and a vtkDataSetMapper ?
>
> Thanks
>
> Olivier
>
>
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