看一下幫助,裡面有 kG$U
INTERFACE r [ t m m'] ? $/;;}|hqi
COAT k coat coat' Lkl^
`
-k jr=erVHK
+k K-drN)o
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. R3%&\<a)9
+ 指只有折射沒有反射光, H)l7:a
- 指只有反射沒有折射。