看一下幫助,裡面有 b~r{J5x@
INTERFACE r [ t m m'] ? ig2+XR#%
COAT k coat coat' ,s><kHJ
-k c@ZS|U*(
+k <{cNgKd9
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. b WbXh$
+ 指只有折射沒有反射光, hP1
l v7P
- 指只有反射沒有折射。