[vtkusers] How to change camera angle in slow motion?

[Alex Malyushytskyy]

Does below link help?
http://www.vtk.org/Wiki/VTK/Examples/Cxx/Animation/AnimateActors

Alex


On Thu, Sep 12, 2013 at 12:50 PM, Jian Li <jian.li at cometsolutions.com>wrote:

>  Hi;
>
> I'm using vtk-6.1.0 on Windows 7. I created a view widget which has
> options to change camera angles, such as, Bottom, Front, Left, Right ....
> And the following  is part of the code that handles the camera position.
>
>     dataPtr_->renderer_->GetActiveCamera()->SetPosition(newPos[0] +
> focalPoint[0], newPos[1] + focalPoint[1], newPos[2] + focalPoint[2]);
>     dataPtr_->renderer_->GetActiveCamera()->SetViewUp(newPos[3],
> newPos[4], newPos[5]);
>     dataPtr_->renderer_->GetActiveCamera()->SetViewAngle(30);
>     dataPtr_->renderer_->GetActiveCamera()->OrthogonalizeViewUp();
>     dataPtr_->renderer_->ResetCameraClippingRange();
>     dataPtr_->renderer_->ResetCamera();
>     dataPtr_->displayWidget_->GetRenderWindow()->Render();
>
> They work fine, but  the view of the object is updated instantly like
> changing a slide. I wonder if there is a setting that can show the movement
> in slow motion, i.e. user can see the object in the scene  rotate to the
> required camera position. I've seen some gui applications have this
> feature, I don't know if VTK can do it. Any help is appreciated.
>
>
> Thanks
> Jian
>
>
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