Render the mesh in the camera view and apply the distortion model.

[mleotta]

We should be able to render the mesh content currently shown in the World View in the Camera View using the projection model of the current camera, including radial distortion. This should be straight forward in VTK except for the distortion part, which would need to use shaders. Alternatively we can render the undistorted image and then apply an image warping to distort it.