[vtkusers] vtktransform with vtkpolydata

[王君臣]

2010/5/24 pablo p del castillo <pablodecastillo at yahoo.es>

> Hello,
>
> How can i fix the origin in a vtkpolydata to apply a rotation with
> vtktransform?
>
> I did it with vtkActor, but then i need info about rotate points new
> position, and from actor i do not known how get it.
>

~~~~~~~~~~~~~~~~~~~~~~~~~~~you can get  the actor usermatrix and  transform
the rotation center from the world frame to the actor frame. defaultly, the
usermatrix is an identity matrix. Note should be taken that usermatrix is
only change the camera of the scene, not the data itself.

>
> Thanks
>
> Pablo
>
>
>
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