;切割模型法
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n
gen zone cyl p0 1.5 1.5 4 p1 2 1.5 4 p2 1.5 1.5 0 p3 1.5 2 4 p4 2 1.5 0 p5 1.5 2 0
gen zone reflec ori 1.5 1.5 4 norm 0 1 0
gen zone reflec ori 1.5 1.5 4 norm 1 0 0
gro 1 ran z 0 4
gen zone brick size 3 3 3
group 2 range group 1 not
gen separate 2
int 2 wrap 1 2
int 2 maxedge 0.5