看一下幫助,裡面有 PQ@(p%
INTERFACE r [ t m m'] ? KL sTgo|J
COAT k coat coat' eXnMS!g%Z
-k vwZ2kk!|i
+k ~?E x?!\9R
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. T*J]e|aF
+ 指只有折射沒有反射光, t LS5yT/
- 指只有反射沒有折射。