[vtkusers] Picking points from (multiple) vtkStructuredGrids using vtkPointPicker

[da xu]

Hey Gregory,

I don't have the code with me right now, but the basic implementation was
using the vtkPointPicker class.

It went something like this:

 vtkPointPicker *picker = vtkPointPicker::New();
 picker->Pick(x, y, 0, this->m_flowInternal->renderer);

 id = picker->GetPointId();
 *actor = picker->GetActor();


id was the index of the point, and actor was the actor associated with the
structured grid that the point came from. I forgot how I got the x,y
co-ordinates of a mouse click; I believe I subclassed something?

On Thu, Aug 27, 2009 at 10:35 AM, Grzegorz Pytel <bioinfguy at gmail.com>wrote:

> Hi,
> I've read your post on 3 Aug 2009 and would like to ask you for sending me
> your picking code you have done.  How do you get an id of picked cell using
> vtkPicker? how it is possible to get the index of the point picked of some
> vtkStructuredGrid?? How do you get a cell?
> Thanks in advance,
> Regards,
> Gregory
>
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