[vtkusers] vtkTransformFilter

[J.S.Wijnhout at lumc.nl]

Hi,

You solution doesn't work because do you not connect the output of trF to the mapper of the actor. Btw, if you want to apply a user defined transformation matrix to your actor, simply use: vtkActor::SetUserMatrix.

best,
Jeroen

 

________________________________

From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On Behalf Of Giancarlo Amati
Sent: Monday, March 30, 2009 7:03 PM
To: vtkusers at vtk.org
Subject: [vtkusers] vtkTransformFilter


Hi everybody,

I have an object picked usint VTkpicker....and I can recover its actor. now, I also define a vtkMatrix4x4 which is a rigid transformation matrix.
I want to apply that transformation to the object and I wrote this:

vtkTransform *tr = vtkTransform::New();
        tr->SetMatrix(m);
        tr->Update();

        vtkTransformFilter *trF = vtkTransformFilter::New();
        trF->SetInput(tmpAct->GetMapper()->GetInput());
        trF->SetTransform(tr);
        trF->Update();

where tmpAct is the actor picked by the picker.
So I thought that after refreshing the visualization I should see the object modified, but it doesn't....so where's the trick?

Kind Regards.
Giancarlo


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