Be able to name a clipping algorithm that works for three-dimensional objects. It can move around in space, point in any direction, and assist in stereo views. The orientation and position of the synthetic camera determine the view of the three-dimensional model that will appear in the final image of the model. The view plane is the plane in which a window is defined and in which the projection occurs. It corresponds to the u-v plane, where u and v are part of the viewing coordinate system .
All projections preserve straight lines.
A perspective projection has all the projectors pass through a single point, called the center of projection or the eye point, and intersect the view plane. Objects farther away from the synthetic camera appear smaller. This makes equal lengths parallel and perpendicular to the image plane project into equal lengths in the image. The depth of a cavalier projection of a cube is equal to its height and width. An orthographic projection preserves parallel lines.