[vtkusers] vtkFollower + vtkAssembly

[Olivier Nempont]

Hi all,

In my application I want to place a vtkFollower in a vtkAssembly. But when I rotate the camera, the follower appear to rotate around a wrong point.
Below is the code i used to test that. Any idea about something I missed?

Thanks in advance!

Best regards,
Olivier


		vtkVectorText text = new vtkVectorText();
		text.SetText("test");
		vtkPolyDataMapper textmapper = new vtkPolyDataMapper();
		textmapper.SetInput(text.GetOutput());
		vtkFollower textactor = new vtkFollower();
		textactor.SetCamera(this.GetRenderer().GetActiveCamera());
		textactor.SetMapper(textmapper);
		textactor.GetProperty().SetColor(1,1,0);
		textactor.SetPosition(0,0,0);
	//	this.GetRenderer().AddActor(textactor);

		vtkSphereSource sphere = new vtkSphereSource();
		sphere.SetRadius(1);
		sphere.SetThetaResolution(10);
		sphere.SetPhiResolution(10);
		vtkPolyDataMapper spheremapper = new vtkPolyDataMapper();
		spheremapper.SetInput(sphere.GetOutput());
		vtkActor sphereActor = new vtkActor();
		sphereActor.SetMapper(spheremapper);
		sphereActor.GetProperty().SetColor(1,1,0);
		sphereActor.SetPosition(-1,-0.5,5);
	//	this.GetRenderer().AddActor(sphereActor);		

		vtkAssembly obj = new vtkAssembly();
		obj.AddPart(sphereActor);
		obj.AddPart(textactor);
		obj.SetOrigin(-2,0,0);
		obj.AddPosition(-2,0,0);
		this.GetRenderer().AddActor(obj);

		
		this.GetRenderer().SetBackground(0, 0, 0.5);
		this.GetRenderer().GetActiveCamera().SetPosition(0.5,0.5,20);
		this.GetRenderer().GetActiveCamera().SetFocalPoint(0.5,0.5,0);
		this.GetRenderer().GetActiveCamera().ParallelProjectionOff();