[vtkusers] Scalar field data on polydata

[Bill Lorensen]

Nils,
There was an example in vtk3.x, combColorIso.tcl that generated an isosurface and then sampled another grid with the extracted isosurface.

If you can't find it, let me know and I send it to you,

Bill

At 06:26 PM 3/2/02 +0100, Nils H. Busch wrote:
>Hi,
>
>I would like to display/map  scalar data onto a polydata
>surface(generated from vtkMarchingCubes).
>I am reading in a vtkStructuredPoint set, extract the isosurface with
>vtkMarchingCubes and write the vtkPolyData to file. Now, I would like to
>read in another vtkStructuredPoint set and map that onto the polydata
>surface (probably needs to be tri-linearly interpolated ).
>I am not quite sure, where I should add this extra scalar field in my
>pipeline.
>Can I add a second scalar data set within vtkMarchingCubes, can I
>somehow project the scalar data onto the output polydata  or do I need
>to traverse the inner data structures of the respective vtk data sets
>and set some associated data array ?
>
>This has probably been done before, but I could not find any examples.
>Any references or hints greatky appreciated.
>
>--
>    Nils H. Busch
>    Max-Planck-Institute of Cognitive Neuroscience
>    phone:  ++49 (341) 9940-335 fax:  ++49 (341) 9940-204
>    e-mail: nilsb at cns.mpg.de
>
>
>
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