[vtkusers] clipping question

Bill Lorensen bill.lorensen at gmail.com
Fri Feb 2 19:58:37 EST 2018

These clip filters depend on the resolution size, I modified your
example to use a higher resolution image. I'd like to add this to the
VTKExaamples repo if is OK with you. I will acknowledge your


On Fri, Feb 2, 2018 at 12:37 PM, Langer, Stephen A. (Fed)
<stephen.langer at nist.gov> wrote:
> Hi --
> When using vtkTableBasedClipDataSet to apply two more more clipping planes to a grid, I'm seeing incorrect results along the line where the planes meet.  I've attached a simple program that demonstrates the problem and a screenshot of the output.   The program generates a vtkRectilinearGrid and pipes it through vtkTableBasedClipDataSet with its clip function set to two perpendicular planes.  The result should have a concave right angle, but diagonal facets appear instead.
> I've tried using vtkClipDataSet instead, but it just gives different wrong answers, although it does work correctly when the clipping planes lie exactly along a row of nodes in the grid.  vtkTableBasedClipDataSet draws diagonal facets across cells in that case.
> What am I doing wrong?
> Thanks.
>   -- Steve
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