看一下幫助,裡面有 {5*5tCIt
INTERFACE r [ t m m'] ? B:l(`G
COAT k coat coat' 4-o$OI>
-k #Rs7Ieu+
+k n V<YwqK
The signs in front of k can be used to instruct ASAP to either propagate only a reflected ray (-k: t=0) at that object or to propagate only a transmitted ray (+k: r=0) at that object. h)w<{/p(
+ 指只有折射沒有反射光, r8qee$^M
- 指只有反射沒有折射。