[vtkusers] is vtkClipPolyData slow?

[Sam Raby]

Hi Again,
I am testing also another VTK example as well where vtkClipPolyData is used
to clip a vtkSphereSource:

http://www.vtk.org/Wiki/VTK/Examples/Cxx/Widgets/ImplicitPlaneWidget2

But once I replace the vtkSphereSource with the segmented head (see the
image attached), the clipping becomes slow. I have tried to clean and
decimate the polydata but they did not make the clipping faster. Is there
any trick or hint here?

Thanks


On Wed, Jun 25, 2014 at 2:53 AM, Sam Raby <rabysam28 at gmail.com> wrote:

> Hi -
>
> I have the following codes to clip a model, but when I update the Plane to
> generate the new clipped surface it is very slow. Is there a way to make
> this faster? or is there another vtk class to perform faster?
>
> vtkSmartPointer<vtkPlane> clipPlane =  vtkSmartPointer<vtkPlane>::New();
> clipPlane->SetNormal(1, 1, 0);
> clipPlane->SetOrigin(0.0, -10.0, 0.0 );
>
> vtkSmartPointer<vtkClipPolyData> clipper =
> vtkSmartPointer<vtkClipPolyData>::New();
> clipper->SetInputData( reader->GetOutput() );
> clipper->SetClipFunction( clipPlane );
>
>
> thanks
> -S
>
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