Introduction - If you have any usage issues, please Google them yourself
On the screen draw an arbitrary polygon, within the computer as a polygon of its represented as a positive for the bottom side of the prism n (specified height), the prism of each side has a different color. Z-Buffer algorithm is used to do face hidden allowed to prism center fixed point, by entering the x, y, z direction of the rotation angle to achieve any angle of rotation (or through the mouse to achieve any angle of rotation) projection mode: Positive parallel projection, and assuming that objects are always cutting space