看一下幫助,裡面有 DR:DXJc
INTERFACE r [ t m m'] ? aq8./^
COAT k coat coat' QKB+mjMH#x
-k *hJWuMfY,
+k 80'@+AD
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. ~cfXEjE6
+ 指只有折射沒有反射光, m-ibS:
- 指只有反射沒有折射。