看一下幫助,裡面有 dA$qzQ
INTERFACE r [ t m m'] ? "K#zY~>L
COAT k coat coat' M(<.f}yZQ
-k I=&Kn@^
+k
z:JJ>mxV
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. ;%PI
+ 指只有折射沒有反射光, ,5P
tB]8&3
- 指只有反射沒有折射。