Compensate projector diretion.
Width / Height
Width and height of mixed image.
Horizontal / Vertical
Horizontal and vertical position of mixed image.
Rotation, Elevation, Azimuth, Divergence
Corrects distortion that caused by projection at angle onto a plane.
See figure below.
[Rotation] rotates mixed image around the center of projection.
[Divergence] specifies how wide projection expand.
Adjust four corner positions independently.
(mixed image may appear incorrectly depending on relative position of corners (skew, concave, etc.))
