[vtkusers] DataSetSurfaceFilter supporting blanking with StructuredGrid

[Dr. Helmut Schumacher]

Hello,

I found a very strange solution for my problem.

DataSetMapper uses DataSetSurfaceFilter.

In VTK 5.4.2 and 5.6.1 DataSetSurfaceFilter does NOT support blanking for a
StructuredGrid.
But the VTK-Version for ParaView has a method to handle this (for both Cell-
and PointBlanking).
Unfortunately the controlling "if"-statement selects this branch for
CellBlanking only.

So I copied the ParaView-Version of DataSetSurfaceFilter to my VTK/Graphics.
I changed line 161 of vtkDataSetSurfaceFilter.cxx from

if( grid->GetCellBlanking() )

to

if( grid->GetCellBlanking() || grid->GetPointBlanking() )

and compiled the changed VTK.

As the result I have a VTK with DataSetSurfaceFilter and therefore also
DataSetMapper supporting Cell- and PointBlanking.

I add my version to this mail and hope you will include it in the next
version of VTK.

Thanks in advance

Dr. Helmut Schumacher
Forschungszentrum Jülich
Jülich Supercompting Centre
Leo-Brandt-Straße
52425 Jülich
Tel.: +49-2461/61-2482
Fax: +49-2461/61-6656


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