看一下幫助,裡面有 eA'1
INTERFACE r [ t m m'] ? |xX>AMZc)D
COAT k coat coat' @teNT"
-k Kh,zp{
+k R^ &nBwp
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. p"ElO,\
+ 指只有折射沒有反射光, ,p7W4;?4
- 指只有反射沒有折射。