[vtkusers] Pick point on vtkPlane

[David Doria]

On Fri, Nov 6, 2009 at 8:53 AM, superzz <jxdw_zlf at yahoo.com.cn> wrote:

>
> Hello
> I am developping a volume rendering program.
>
> I'm using vtkInteractorStyleTrackballCamera as InteractorStyle and vtkPlane
> to cut volume. When user click the screen, my program needs to calculate
> and
> output the 3D intersection point to vtkPlane.
>
> I know how to do this in my XNA/directX program, but not familiar with the
> corresponding API of VTK. Googled for more than 3 hours but finally failed
> to find out what API should be used. Please help me.
>
> Thanks
>
> superZz
>

This is a very good question. I believe you have to add an observer or
something? Here is the shell of an example of this:
http://www.vtk.org/Wiki/Plane_Picking

Can anyone make it output the coordinates of the point that is clicked?

Thanks,

David
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