看一下幫助,裡面有 r9XZ(0/p
INTERFACE r [ t m m'] ? {n=|Db~S
COAT k coat coat' eyxW 0}[
-k ?e?!3Bx;EM
+k \{NO?%s0p
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. o2ECG`^b
+ 指只有折射沒有反射光, 7d\QB(~
- 指只有反射沒有折射。