看一下幫助,裡面有 d3^LalAp
INTERFACE r [ t m m'] ? #Cbn"iYee
COAT k coat coat' Z*s/%4On
-k f>Bcr9]]
+k r{6 ,;
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. .:_dS=ut
+ 指只有折射沒有反射光, !Bu<6
- 指只有反射沒有折射。