看一下幫助,裡面有 jQ[M4)>_k`
INTERFACE r [ t m m'] ? 0;pO QF
COAT k coat coat' `GD>3-
-k |~I-
+k zu-1|XX
The signs in front of k can be used to instruct ASAP to either propagate only a reflected ray (-k: t=0) at that object or to propagate only a transmitted ray (+k: r=0) at that object. wBK%=7
+ 指只有折射沒有反射光, [6Nw)r(a(
- 指只有反射沒有折射。