计算机图形学中的基本概念

\left[\begin{array}{cccc} \frac{2 n}{r-l} & 0 & \frac{r+l}{r-l} & 0 \ 0 & \frac{2 n}{t-b} & \frac{t+b}{t-b} & 0 \ 0 & 0 & -\frac{f+n}{f-n} & -\frac{2 f n}{f-n} \ 0 & 0 & -1 & 0 \end{array}\right]