进一步掌握二维、三维变换的数学知识、变换原理、变换种类、变换方法；进一步理解采用齐次坐标进行二维、三维变换的必要性；利用OpenGL实现二维、三维图形变换。-Further grasp the two-dimensional, three-dimensional transformation of the mathematical knowledge, Transformation Principle, changing the types of transformation methods