看一下幫助,裡面有 lPZ>#
INTERFACE r [ t m m'] ? CaZc{
COAT k coat coat' nx%A s
-k 32K& IfV
+k }ex4dhx2M
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. _6fy'%J=U
+ 指只有折射沒有反射光, lO cFF0'
- 指只有反射沒有折射。