[vtkusers] vtkCellPicker not working with vtkGlyph3DMapper

[Bob Dean]

I can do that, its a #define. The main reason I swapped was I needed to individually rotate the glyphs. The simple Rpy interface of 3dmapper made this simple. I had previously tried tensor glyph without success. 

Sent from my iPhone

On Jun 24, 2013, at 9:09 PM, David Gobbi <david.gobbi at gmail.com> wrote:

> On Mon, Jun 24, 2013 at 11:49 AM, Bob Dean <bob.dean at gmail.com> wrote:
>> I recently changed to use vtkGlyph3DMapper from vtkGlyph for the enhanced rendering and orientation support. Now when I click a glyph in the scene, my cell picker returns 0 from GetActor(). The world coordinates from the puck seem correct. Swap back to old rendering and everything is fine. I have verified that the actor is pick able.
>> 
>> Do I need to setup something special to get 3dmapper to be picked?
> 
> The vtkCellPicker works by checking to see if a view ray at the mouse
> position intersects with the input data.  But for vtkGlyph3DMapper,
> the data returned by GetInput() is just a set of points (the glyphing
> happens on the GPU).
> 
> Try using vtkGlyph3D instead of vtkGlyph3DMapper and the picker should
> work just fine.
> 
> - David