Add camera path example
Change path points
Merge remote-tracking branch 'origin/master' into camera_path
Fix to match master
Add computation of direction vectors
Simplify code
Find better control points and visualize camera path
Merge remote-tracking branch 'origin/master' into camera_path
Experimenting on camera path
Merge remote-tracking branch 'origin/master' into camera_path
Change camera path
Merge branch 'master' into camera_path
Split camera path classes into several files