看一下幫助,裡面有 }x@2]juJ
INTERFACE r [ t m m'] ? i'4B3
COAT k coat coat' DKne'3pH
-k {kp"nl$<
+k _]yn"p
The signs in front of k can be used to instruct ASAP to either propagate only a reflected ray (-k: t=0) at that object or to propagate only a transmitted ray (+k: r=0) at that object. :e]a$
+ 指只有折射沒有反射光, H(bs$C4F
- 指只有反射沒有折射。