看一下幫助,裡面有 MA,7|s
INTERFACE r [ t m m'] ? STjk<DP(
COAT k coat coat' (jI _Dk;
-k ?Gnx!3Q
+k +\x}1bNS%j
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. Oa-(Xp,n#
+ 指只有折射沒有反射光, !sVW0JS h
- 指只有反射沒有折射。