看一下幫助,裡面有 ]gBnzh.
INTERFACE r [ t m m'] ? T";evM66
COAT k coat coat' i:YX_+n
-k B?BOAH
+k s*rR>D:
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. 3jZGO9ttnS
+ 指只有折射沒有反射光, jRg/N_2'2
- 指只有反射沒有折射。