英语的关于其次坐标系的文档，对刚刚接触计算机图形学的人非常适合。-Documents on Homogeneous Coordinates, suitable to those new to computer graphics.

使用opengl进行计算图形学课程设计，实现虚拟球技术和三维图形建模-中文(简体)英语日语 The use of opengl to calculate the graphics curriculum design, virtual ball technology and three-dimensional graphics modeling