看一下幫助,裡面有 }gw
\w?/
INTERFACE r [ t m m'] ? uCGJe1!Ai>
COAT k coat coat' \FOoIY!.x
-k Sx{vZS3
+k W@<(WI3
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. Ax &Z=
+ 指只有折射沒有反射光, Tjba@^T
- 指只有反射沒有折射。