This is the single most important tutorial of the whole set. Be sure to read it at least eight times.

# 1 齐次坐标(Homogeneous coordinates)

• 如果 ，则向量 表示空间中的一个位置
• 如果 ，则向量 表示一个方向

# 3 Model, View, Project矩阵

## 3.2 View 矩阵

The engines don’t move the ship at all. The ship stays where it is and the engines move the universe around it. ---- Futurama