看一下幫助,裡面有 F{ J>=TC
INTERFACE r [ t m m'] ? #gi0FXL
COAT k coat coat' y5iLFR3z
-k = ^:TW%O
+k 4x.'H18
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. /ZZo`
+ 指只有折射沒有反射光, kVw5z3]Xg
- 指只有反射沒有折射。