[vtkusers] vtkTextActor align to center of text

[M. Jordan]

Hi,

I am creating a 3D text like this:


// create text
vtkSmartPointer<vtkVectorText> textSource =
 vtkSmartPointer<vtkVectorText>::New();
textSource->SetText("TEST");
textSource->Update();
// create a mapper for the text
vtkSmartPointer<vtkPolyDataMapper> txtmapper =
 vtkSmartPointer<vtkPolyDataMapper>::New();
 txtmapper->SetInputConnection(transformFilter->GetOutputPort());
// create a subclass of vtkActor: a vtkFollower that remains facing the camera
vtkSmartPointer<vtkFollower> follower =
vtkSmartPointer<vtkFollower>::New();
follower->SetMapper(txtmapper);
 follower->SetCamera(renderer->GetActiveCamera());
 follower->SetPosition(10.0,20.0,30.0);

Now the passed follower position is approximately the bottom left corner of my text.

How can I achieve a text which is centered about my desired position?
For example the text "101" should result in a 3D text with the center being located in the middle of the "0"

Thank you very much!


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