看一下幫助,裡面有 {&s.* 5
INTERFACE r [ t m m'] ? -!pg1w06
COAT k coat coat' Jnf@u
-k ttA0*
>'
+k l*>,:y
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. YV/JZc f
+ 指只有折射沒有反射光, 2f7]=snCG
- 指只有反射沒有折射。