看一下幫助,裡面有 J4Z<Yt/
INTERFACE r [ t m m'] ? ?Y0$X>nm
COAT k coat coat' I0l.KiBm
-k DA MpR3
+k _UBJPb@=U
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. /cL9?k;o
+ 指只有折射沒有反射光, ADyNNMcx
- 指只有反射沒有折射。