CameraTransition: Transitioning with a very far away point causes issues on the globe

[gkjohnson]

[gkjohnson]

This likely due to the perspective camera being positioned under the terrain after the transition resulting in the camera rotation being angled incorrectly.

[gkjohnson]

To handle this the manager should be able to transition between cameras at different positions with different near / far plane. However this makes it difficult to keep a "fixed" point during transitions meaning that the fixed point will "swim" but only in the case that the camera must be shifted after syncing positions.

Update cycle from #821

• Sync camera positions and views
• Update camera positions, views, etc from controls
• Perform transition
  • Recompute "fixedHeight" for every transition step
  • Transition orientation (though ideally it shouldn't be different)
  • Transition the position of each camera, which is ultimately used to model the "ray" that each camera is looking along