var i:real
4 ~* q2 T4 {+ h! A( S' o; B& y% [i:=z_uniform(1,0,1), d' Q; ^' k+ ]& G3 `) e
@.createattr("type","string")" H! K; r3 k1 ^+ Y9 {) S8 h- }
if i<0.2
! Q" `2 w; G% @7 h4 ?! v3 l+ t @.type:="red"3 c' w+ U8 u- H7 Z, P
PartRecord["Number",1]+=12 T' m* a6 I# {
elseif i<=0.5 and i>=0.2- s3 d5 Y+ F, |( ~
@.type:="green"
9 Q: }! D) \5 P, [) r, H PartRecord["Number",2]+=1
, D4 Y! S; l: H2 c- b3 delse , T( f! T" f- q8 u. F
@.type:="blue") @7 X9 |* n1 |/ M; e8 }
PartRecord["Number",3]+=1
# e) e. {1 \+ j1 _* Y% ~' bend
' a! t. S' M. Q$ @+ ]" Z
4 U. C+ {' m) w8 udeleteMovables9 H6 |, F5 c9 r! D
PartRecord.delete({2,1}..{2,3})
0 S* H7 w# Z% L2 h5 N% k7 Z: X这是对的 |