[vtkusers] Re: vtkPicker::GetActors() returns empty list

[David Gobbi]

On Mon, 12 Jun 2000, David Gobbi wrote:

> Hi Will,
> 
> I found out why some of my VTK code isn't working anymore, the Actors
> ivar is always an empty list.  The new pick methods completely ignore the
> Actors ivar.

Ah, I found a simple solution.  I just changed my code to use
GetProp3Ds() instead of GetActors() and everything works fine.
It looks like it is impossible for both GetActors() and GetProp3Ds()
to _both_ work properly, because the GetPickedPositions() can't
match both of them. 

It looks there will have to be a new method, GetPickedPropPositions(), 
so that GetPickedPositions() can still return points that correspond
to GetActors() and hence provide backwards compatibility.

 - David

--
  David Gobbi, MSc                    dgobbi at irus.rri.on.ca
  Advanced Imaging Research Group
  Robarts Research Institute, University of Western Ontario