[vtkusers] Set VTKCamera intrinsics

[alykhantejani]

I am trying to render views of a 3D mesh in VTK, I am doing the following:


    vtkSmartPointer<vtkRenderWindow> render_win =
vtkSmartPointer<vtkRenderWindow>::New();
    vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
    
    render_win->AddRenderer(renderer);   
    render_win->SetSize(640, 480);
    
    vtkSmartPointer<vtkCamera> cam = vtkSmartPointer<vtkCamera>::New();
    
    cam->SetPosition(50, 50, 50);
    cam->SetFocalPoint(0, 0, 0);
    cam->SetViewUp(0, 1, 0);
    cam->Modified();
    
    vtkSmartPointer<vtkActor> actor_view = vtkSmartPointer<vtkActor>::New();
    
    actor_view->SetMapper(mapper);
    renderer->SetActiveCamera(cam);
    renderer->AddActor(actor_view);
    
    render_win->Render();

I am trying to simulate a rendering from a calibrated Kinect, for which I
know the intrinsic parameters. How can I set the intrinsic parameters (focal
length and principle point) to the vtkCamera.

I wish to do this so that the 2d pixel - 3d camera coordinate would be the
same as if the image were taken from a kinect.

Thanks




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