看一下幫助,裡面有 QZo l(2~Y
INTERFACE r [ t m m'] ? 1wt]J!hgV
COAT k coat coat' '>BHwc
-k v]~[~\|a
+k \ :.p8`
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. f`e.c_n(
+ 指只有折射沒有反射光, g:yK/1@Hk}
- 指只有反射沒有折射。