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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********************' c; A2 c+ N3 K, h1 }
$$佛珠+ T" y, g( m8 V& z3 [- S1 V
$$实体变量声明。( j, k8 s* F8 B6 ^4 h
entity/pt(11) $$选择的点数! W2 V5 E8 j2 D2 Z! w' g
entity/obj1,obj2,obj3,obj4
9 r5 W' }' C5 e+ o3 sentity/mycolor
' W$ K0 T$ e6 Fentity/results(1000) $$生成的点集* l5 q" A( [3 j8 r8 R
number/num2,num $$点集的数量
6 e g- [: N U" e5 q0 ~number/beaddia $$佛珠直径
3 X. O7 ?4 N, M; w( W: bnumber/a(3),b(3)5 i: |- X" C! k9 ~; \( D( e3 s: f
data/num2,108( ~; C/ u0 |3 |; w5 u5 ?
$$print/'num2',num2
; B/ Z' N' j0 A# W) o2 T8 ~$$选择屏幕点4 c. |3 A9 o6 p5 E6 k+ R2 [
num=1, w: [5 Z5 B" Y& X$ R1 \) H9 p
l10:
4 H# I& Y' D k% }2 |1 eif/num>11,jump/l30:
1 i( X' o( {$ ?; j8 q# }pos/'pick a point',x,y,z,resp z9 @4 ?: h6 w% k8 W+ l8 }# z
jump/l10:,trm:,,,l20:,resp
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l20:! [* `- [% _; l. l; m& F
pt(num)=point/x,y,z7 _+ Z) ]( ~5 ~+ q4 Y" C" U4 F
num=num+1
/ z. Q- y! s: }) e2 yjump/l10:
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$$创建封闭的样条曲线8 i. X+ c2 a' ]) r9 b7 h
l30:# r+ J. o* E, _4 d
obj1=spline/closed,pt(1..num-1)7 }1 ?; D# k _
delete/pt
; `- S4 |2 P5 L& P- F# I$$样条曲线分段,创建点集(等弦长,弦长=beaddia)
: Z. i" L& l. s) Q8 Fcpset/earcl,obj1,num2,results
- M6 `+ k ^, v# i( a- C$$计算球体的直径
, Y' s( t% |; ?, X9 e, n$ Na(1..3)=&point(results(1))
8 U! ?; i) s6 n0 ~, o( e7 h1 ?b(1..3)=&point(results(2))
% g& G( ?+ M8 N* y5 Q$ ~2 ubeaddia=sqrtf((a(1)-b(1))**2+(a(2)-b(2))**2+(a(3)-b(3))**2)
F5 J' t, |& @" o, h; a3 r" M8 w6 g+ H9 h( S) w
8 F& ^) y; }& v1 \3 h4 \$$在样条曲线的分段点上创建佛珠
2 Q) Z3 `; K7 o& E W: D$ g( O+ Qnum=1# e3 A: i, K: H1 `/ j
l40:
) V/ s {7 p7 T" u- ]- Iif/num>108,jump/l50:
: ~2 Y1 ]3 {2 da(1..3)=&point(results(num))5 \1 L4 O* J2 W3 Y- ^
obj2=solsph/origin,a(1),a(2),a(3),diamtr,beaddia
" ?4 E f- l `# q8 ynum=num+1
! l" f; d2 L7 ?1 J$ Hjump/l40:
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5 x& s) m& p( n* t" b, K$$创建线
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obj3=spline/results(1..108)
0 n' c( {4 C% Y# v0 A% I7 wobj4=soltub/obj1,diamtr,beaddia/8- ~8 A; F. M B1 L* K$ }: e/ w
+ h* `" W! a+ D* m$ Jdelete/results; R- D5 W( |3 C, D* D
delete/obj1
6 ~8 @; W# g4 B& i: w9 K: z- Mdelete/obj32 O% d* |% ^0 C+ F* x8 y. I
$$程序结束4 F3 `6 `/ P" @2 [
trm:/ s4 K# v$ \% l/ D( _" T2 H/ u
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