看一下幫助,裡面有 * B!uYP
INTERFACE r [ t m m'] ? cq`v8
COAT k coat coat' V`Z-m-V~1
-k [*U6L<JI
+k 4l+"J:,
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. Bk&ry)`gD
+ 指只有折射沒有反射光, Z@fMU2e=Z
- 指只有反射沒有折射。