Notes:	(1) The dimensions of the box are W x L x H. (2) The eye is located at (xe, ye, ze). (3) The origin is always centered and the drawing is rescaled to best fit the screen.
Error messages:	(1) Inside the box: (xe,ye,ze) within the box boundaries (2) Too close: one or more points are behind the eye location (xe,ye,ze).
More Info:	2-D Rendering of 3-D Objects - Projection and Perspective