[vtkusers] How to apply vtkActor transformation to underlying data ?

[David Doria]

On Wed, Mar 30, 2011 at 11:47 AM, nsarrasin <nsarrasin at phenix-systems.com>wrote:

> Hi all,
>
> I have a polygon (defined by double*) which I render.
> Then I apply some transformation to the vtkActor.
>
> Now I would like to update my initial data. For each point of my set, I
> translate it with vtkActor::GetPosition() and then I apply the
> vtkActor::GetMatrix().
>
> It appears that it's not the right way to do because initial and final
> boundingbox of my polygon doesn't have the same dimensions.
>
> What I am missing ?
>
> Thanks by advance
>

I believe the translation is built into the GetMatrix, so you don't need to
translate it and then apply the matrix, just try applying the matrix.

David
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