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发表于 2008-5-10 20:16
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***************珍珠项链建模源代码********************
; ]7 ]( Z7 V- b) k( |% e" j* R6 `$$佛珠
& f8 I3 H+ r1 i) I2 E4 z9 R$ t+ L$ A$$实体变量声明。4 u5 `0 M8 t% g G- h
entity/pt(11) $$选择的点数& m1 ]" T+ Q7 u% w
entity/obj1,obj2,obj3,obj4
( w: {, T0 G) Eentity/mycolor
+ k% \0 j+ j0 ]$ j4 s+ |& a: ~entity/results(1000) $$生成的点集7 D6 w3 L; y/ [9 _
number/num2,num $$点集的数量& ?# V5 G' F# w5 T8 R+ v: E3 V
number/beaddia $$佛珠直径" Y7 o; q/ o+ T5 X: O
number/a(3),b(3)
4 ^. r* |/ S) O1 U% }data/num2,108
5 f0 K# Y7 j# Y$ m. O$$print/'num2',num2
0 y1 C8 |! B9 u7 q/ H8 v" ?( J$$选择屏幕点9 b x0 m4 a* b; `0 B# P3 [
num=1
/ Y9 q3 Z3 s6 k+ O# V( c: el10:
: l, S8 C% w2 o9 {) Y" b+ Q& eif/num>11,jump/l30: C9 x( h/ ] X
pos/'pick a point',x,y,z,resp
; w( n- d! P& Q- H7 Z$ r4 vjump/l10:,trm:,,,l20:,resp' e; L& {* G8 F; ~' c
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l20:
0 n, v1 Z+ W* J5 t) @pt(num)=point/x,y,z
, C3 G* S6 L7 T w8 r/ p0 \num=num+11 J. `4 p/ G2 C0 I
jump/l10:7 ?9 g4 y% T4 B
2 m( l6 m3 V, r3 m" Y n
$$创建封闭的样条曲线. J+ w/ b$ K% m; n/ m1 r
l30:
2 p1 F0 @& U% pobj1=spline/closed,pt(1..num-1)
' _: ?+ ^' X) e7 f2 f$ Cdelete/pt( O4 z+ z3 L% l* z; P" p
$$样条曲线分段,创建点集(等弦长,弦长=beaddia)
/ @( b U8 C! w! ccpset/earcl,obj1,num2,results* V$ u3 X9 s1 [. S
$$计算球体的直径* ~1 a- c' b3 p ^5 w
a(1..3)=&point(results(1))5 ]" v* x7 g7 ]1 S' I
b(1..3)=&point(results(2)); U, \1 f% R7 Q; d( ~
beaddia=sqrtf((a(1)-b(1))**2+(a(2)-b(2))**2+(a(3)-b(3))**2)' K% z B' v( U4 \ p0 r9 I. H
S+ V K( W5 W! _7 g$ Y
+ Q! @- K8 V. T' K4 |5 j
$$在样条曲线的分段点上创建佛珠
8 i# {* P0 e7 u) Gnum=17 x4 M$ w5 U* ?2 [
l40:5 i- S/ O3 H1 b( M
if/num>108,jump/l50:& E4 m# t+ H; S( U
a(1..3)=&point(results(num))- ?" ~' q; V! k+ F$ f- V! j
obj2=solsph/origin,a(1),a(2),a(3),diamtr,beaddia6 u! \: ], [% h7 {8 P8 s! u; h
num=num+1
- [* @* u* I% }/ {0 y- Ojump/l40:
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$$创建线8 R: X6 p! c0 @6 L! i
l50:: n4 |6 b# g4 X7 j9 l
obj3=spline/results(1..108)# U3 B; M( J9 w& G: ]
obj4=soltub/obj1,diamtr,beaddia/80 U- {, d1 m, w5 d: S/ M* P
* D1 X: Z4 T0 d5 B! K8 {
delete/results h- H* w" [) `! ~4 ~; x- S
delete/obj10 ^& l8 \. g, k" E- E, B9 x
delete/obj3) [- B, b4 L! J
$$程序结束6 I6 {) z! B* e5 _
trm:9 Y# W% g% W4 [1 X
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