看一下幫助,裡面有 4KH492Nq9
INTERFACE r [ t m m'] ? )Z/"P\qo
COAT k coat coat' &P?2H66s
-k iQ/~?'PB
+k \]9)%3I
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. 1)(>'pY
+ 指只有折射沒有反射光, E8#
>k
- 指只有反射沒有折射。