看一下幫助,裡面有 S0zD"T
INTERFACE r [ t m m'] ? zZL6z4g
COAT k coat coat' 'GNK "XA^
-k kVkU)hqR
+k 3O,+=?VK
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. +O8%Hm
+ 指只有折射沒有反射光, .YhA@8nc~l
- 指只有反射沒有折射。