看一下幫助,裡面有 ^)Awjj9
INTERFACE r [ t m m'] ?
]&"ii
COAT k coat coat' Y'~O_coG
-k xvl{o
+k V^R,j1*
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. BYMdX J
+ 指只有折射沒有反射光, X/cb1#
- 指只有反射沒有折射。