看一下幫助,裡面有 2\)xpOj
INTERFACE r [ t m m'] ? 3>3 Kwc~E
COAT k coat coat' zU,9T
-k H!@kO]?n
+k rExnxQ<e
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. AKY1o.>z
+ 指只有折射沒有反射光, "0$a)4]
- 指只有反射沒有折射。