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发表于 2007-5-14 11:08:14
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来自： 中国辽宁营口
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Sub A()
- W7 s; u# p: k: q# g Dim Alpha As Double, Alpha1 As Double, Alpha2 As Double
& c& W! n9 i* X/ W Dim Pl As AcadLWPolyline, P(5) As Double3 }4 y/ B3 l1 b8 `2 t9 e- o
'用迭代运算寻找正确的角度Alpha" i) O% S+ C0 [: B a8 t- ^. r; {/ }1 c
Alpha2 = 1.5707963267949
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Alpha = (Alpha1 + Alpha2) / 2! v8 w# c7 g. m% }5 N- ]0 J
If Alpha = Alpha1 Or Alpha = Alpha2 Then( k0 V, j. z: }5 H% p- S* \* r
If Abs(Tan(Alpha1) * 25 + (3.14159265358979 - Alpha1) * 25 - 300) < _" S% J; b0 ]6 H" ?! H
Abs(Tan(Alpha2) * 25 + (3.14159265358979 - Alpha2) * 25 - 300) Then2 C9 y* i8 o% z2 t0 }4 w! p( I7 u! P
Alpha = Alpha1& l m6 ^7 ]) F: L
Else
6 R/ l/ u" C4 B$ ] Alpha = Alpha2
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Exit Do7 ^2 n6 N3 w3 @: G& [: Y
ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 = 300 Then: T; p& n4 n$ e0 ~
Exit Do! ]. [! j1 J2 y3 w. q6 H
ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 < 300 Then2 a/ y; g$ k6 L
Alpha1 = Alpha( A5 p5 j, R' [& h+ h& f1 Y' p
Else
! _$ m9 C) g; x& k( `2 F6 i! C2 [" } Alpha2 = Alpha3 e4 X1 k0 k7 V+ i. E8 `: a: {
End If
7 Y2 p4 M3 n+ F! w- B! x+ R Loop
- o. T. G& L6 G' ^; l6 T1 M5 T '画多段线- n7 V3 E S7 O1 P, L9 m3 ~
P(1) = 25 / Cos(Alpha) '顶点1纵坐标
; ~8 I) ]3 `1 y( w9 g: C5 O$ D9 A, V3 g; ~ P(2) = 25 * Sin(Alpha) '顶点2横坐标
# A {3 I: j5 \% v P(3) = 25 * Cos(Alpha) '顶点2纵坐标1 \' D% p* `# i# i+ T( }# s/ o( h5 ?
P(4) = -P(2) '顶点3与顶点2对称8 q- S( ?! P( v& G0 E
P(5) = P(3)
5 l N4 @0 s. ] O# m" X Set Pl = ThisDrawing.ModelSpace.AddLightWeightPolyline(P) '画多段线
6 U# X- [8 |' I! M) @ Pl.Closed = True '多段线闭合
+ b$ V% \) N- |( k3 {% B Pl.SetBulge 1, -(P(3) + 25) / P(2) '第2段改为圆弧+ u3 c% p8 L ], ~# o" S) c2 s
End Sub
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2 g2 n* j7 ?# _! i. j3 x, `; ^% v: v[ 本帖最后由 woaishuijia 于 2007-5-14 20:51 编辑 ] |
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发表于 2007-5-12 22:48:35
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