[vtkusers] rotation of vtkActor through a matrix

[Miguel Angel Rodriguez Florido]

	Hi,

	Have you tried the vtkActor's methods SetUserTransform or SetUserMatrix?

	Hth.

Gomez Herrero, Alberto wrote:
> Hi all,
> 
> is there any way of applying a transformation to a vtkActor using a 4x4 matrix? The pokeMatrix() method does not work as I expected. If I do
> 
> actor->pokeMatrix(transformationMatrix)
> 
> and nothing else, the position is set to (0,0,0). If I do
> 
> actor->pokeMatrix(transformationMatrix)
> actor->SetPosition(position)
> 
> and then I print the matrix with
> 
> std::cout << *(actor->GetMatrix()) << std::endl;
> 
> then the 4th column of the matrix, which is supposed to be the position given with SetPosition, is not that.
> 
> If there is not any method for appliying a matrix, could anyone give me some light on how to pass from a matrix to angles around x, y and z so I can use the RotateX, RotateY and RotateZ methods?
> 
> Thank you very much,
> 
> Alberto
> 
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-- 
Miguel Angel Rodríguez Florido
Departamento de Ingeniería del Software
División de Investigación y Desarrollo Tecnológico
INSTITUTO TECNOLOGICO DE CANARIAS, S.A. - GOBIERNO DE CANARIAS
www.itccanarias.org t: +34 928 727548/457462, f: +34 928 727517

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