[vtkusers] Is it possible to keep the original Ids for picking after vtkClipPolyData?

[David Gobbi]

Hi Hong,

You can avoid this problem by using the mapper to clip the data,
via the vtkMapper::AddClippingPlane() method, instead of using
vtkClipPolyData.

 - David


On Fri, Apr 29, 2011 at 2:33 PM, Hong Yi <hongyi at renci.org> wrote:
> Hello,
>
>
>
> I am using vtkClipPolyData to clip polydata geometry in combination with
> vtkImplicitPlaneWidget2. It works well but apparently after clipping, the
> original Ids corresponding to each point (in my case, an atom) in polydata
> geometry is recomputed. Since I am using the original Ids for picking and
> highlighting the corresponding residues in another view window, after
> clipping, the picking and highlighting does not pick the right atom and
> residue because the Ids are changed after clipping. Is there a way to keep
> the original Ids after clipping?
>
>
>
> Thanks for any pointers on this,
>
>
>
> Hong