看一下幫助,裡面有 6(.H3bu
INTERFACE r [ t m m'] ? MWhwMj!:m
COAT k coat coat' L=m:/qQL
-k 6RP+4c
+k [TEcg^
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. u G[!w!e
+ 指只有折射沒有反射光, nuxd S,
- 指只有反射沒有折射。