看一下幫助,裡面有 J"FC%\|
INTERFACE r [ t m m'] ? [g2;N,V#
COAT k coat coat' +\r+n~w
-k 5K?}}Frrt`
+k XbQlHfrS
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. o`.R!wm:W
+ 指只有折射沒有反射光, Q#EP|
- 指只有反射沒有折射。