[vtkusers] Information during callback / vtkImplicitPlaneWidget2

[Sebastian Gatzka]

Well, thats a lot creater to me know.
I will try it first thing on monday and will get back to you.

Thanks!


Am 05.03.2010 14:52, schrieb David Doria:
> On Fri, Mar 5, 2010 at 8:47 AM, Sebastian Gatzka 
> <sebastian.gatzka at stud.tu-darmstadt.de 
> <mailto:sebastian.gatzka at stud.tu-darmstadt.de>> wrote:
>
>     How is that possible.
>     I'm not understanding the syntax of the callback function.
>     I'm afraid I can't alter it myself ...
>
>
> The idea is that you just need to give the callback function access to 
> the thing you want to change. Everything is a pointer in VTK, so if 
> you give the callback function a pointer to something, you can then 
> modify the object that the pointer points to from the callback 
> function and it modifies the actual object.
>
>     vtkIPWCallback():Plane(0),Actor(0),TextActor(0) {}
>     vtkPlane *Plane;
>     vtkActor *Actor;
>     vtkTextActor *TextActor;
>
> ...
>
>   vtkSmartPointer<vtkIPWCallback> myCallback =
>       vtkSmartPointer<vtkIPWCallback>::New();
>   myCallback->Plane = plane;
>   myCallback->Actor = actor;
>   myCallback->TextActor = textActor;
>
> Does that help?
>
> David
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