cinder/Cinder — pull request #218 by paulhoux (2012-08-21 11:06:49+00:00)
Title: Camera lens shift

Added a CameraPerspAsym class that can perform lens shift operations, in response to https://forum.libcinder.org/#Topic/23286000000590029.

This also comes in handy for stereoscopic rendering. Includes a test application.

Lens shifting is done in accordance with http://www.sumikoaudio.net/cineversum/manuals/projector_positioning.pdf .

It may be a good idea to simply add "setLensShift()" to the existing CameraPersp class, instead of adding a new class.