看一下幫助,裡面有 z9IJ%=R
INTERFACE r [ t m m'] ? ^.;
x
COAT k coat coat' Q2HULz{
-k +Rb0:r>kU
+k Tv`-h
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. #+6t|
+ 指只有折射沒有反射光, 4KCJ(<p|
- 指只有反射沒有折射。