看一下幫助,裡面有 ;iEFG^'tG
INTERFACE r [ t m m'] ? Fps.Fhm
COAT k coat coat' ?rn#S8nNx<
-k -=D6[DjU<
+k \;smH;m
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. PXYo@^ 3
+ 指只有折射沒有反射光, cU'^
Ja?%
- 指只有反射沒有折射。