看一下幫助,裡面有 rMVcoO@3
INTERFACE r [ t m m'] ? 6Br^Ugy
COAT k coat coat' ;ZuHv {=
-k WL(Y1>|j
+k =p5]r:9W
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. ,){#J"W
+ 指只有折射沒有反射光, T*@o?U
- 指只有反射沒有折射。