[vtkusers] Re: Simple Collision Detection between camera and object

[Goodwin Lawlor]

Chris Hughes wrote:
> Hi Guys,
> 
> I have a simple scene with a single vtkActor containing polyData and a 
> vtkCamera. I am looking for a simple way to be able to tell if the 
> camera (which I obviously know the position of) is touching the polygon 
> mesh.Ie does the polygon mesh appear at the coordinates of the camera?
> 
> I am sure that there must be an easy solution to this, but I am not sure 
> where to start!
> 
> Many thanks,
> 
> Chris
> 

Hi Chris,

You could use:
int vtkOBBTree::InsideOrOutside (const double point[3])

within a callback to check if the camera position has penetrated your 
polydata mesh.

hth

Goodwin