看一下幫助,裡面有 +zZ]Txb(
INTERFACE r [ t m m'] ? vQ8$C 3
COAT k coat coat' z-^/<u1p
-k 2hY"bpGW
+k S2:G#%EAa
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. ,:%
h`P_
+ 指只有折射沒有反射光, CPcB17!
- 指只有反射沒有折射。