[vtkusers] Pick point on vtkPlane

[superzz]

Thanks. It seems that it is helpful. I will try it and will post here if the
problem is fixed. Thanks again.


David Doria-2 wrote:
> 
> 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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