看一下幫助,裡面有 MY-.t-3
INTERFACE r [ t m m'] ? @XOi62(
COAT k coat coat' OR+A_:c.D
-k ,m07p~,V
+k u9![6$R
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. 1a9w(X
+ 指只有折射沒有反射光, za,2r^
- 指只有反射沒有折射。