看一下幫助,裡面有 dcWD(-
INTERFACE r [ t m m'] ? h3@v+Z<}
COAT k coat coat' m9}P9?
-k w"&n?L
+k fa2kG&, _
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. 9k[9P;"F:
+ 指只有折射沒有反射光, !_Z&a
- 指只有反射沒有折射。