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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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% S& k8 p- v/ l$ K; G$ CSub A()4 P7 a) Y- m2 C: W4 h7 J4 @- F
Dim Alpha As Double, Alpha1 As Double, Alpha2 As Double
; X6 Y" M e5 I+ E# I' ? Dim Pl As AcadLWPolyline, P(5) As Double
I# ?8 W7 o& p/ z) b& u" W '用迭代运算寻找正确的角度Alpha9 q: h- m+ X6 R
Alpha2 = 1.57079632679492 J1 J; v6 J" w! d
Do
- s2 \; N" J. K4 Q/ T4 H! s+ u Alpha = (Alpha1 + Alpha2) / 28 d; f: ]- H, n' m0 s
If Alpha = Alpha1 Or Alpha = Alpha2 Then1 g3 X3 M( @( V; q7 Q/ h7 Z2 A- }
If Abs(Tan(Alpha1) * 25 + (3.14159265358979 - Alpha1) * 25 - 300) < _
; V) {. ~$ ]/ V: S7 u5 v Abs(Tan(Alpha2) * 25 + (3.14159265358979 - Alpha2) * 25 - 300) Then/ @- }4 H$ a n$ Q( q
Alpha = Alpha1; a4 f( E" r0 F% T4 Z
Else
$ e% D, [3 F3 C5 C- \ Alpha = Alpha2! z: A6 j+ k& Z
End If& e5 O6 G) z! D' \$ C/ i
Exit Do
' C0 Q# _- r& J& W3 l; d. g ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 = 300 Then5 Z+ ?; R' b3 t) q5 k
Exit Do
! ]5 ~( P/ v. _) ] ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 < 300 Then9 N# E7 D5 d3 K
Alpha1 = Alpha
+ h: ~ x. ~5 ~& d8 Y" T/ \ Else
7 {" q9 v, ~. _) Q ]1 Z Alpha2 = Alpha
: y0 u0 E' _9 D3 e2 w( o' k+ V End If
& P1 h7 z. M- W Loop
: i" o- B5 _ w* D! ~/ k& t0 }7 H '画多段线
( B6 S/ ~2 Q6 n! L5 G4 ~/ d; ^2 [ P(1) = 25 / Cos(Alpha) '顶点1纵坐标; a2 m x, j: `0 Q: |+ _1 m% q
P(2) = 25 * Sin(Alpha) '顶点2横坐标# l- N3 B5 j/ t8 o
P(3) = 25 * Cos(Alpha) '顶点2纵坐标
8 ^0 j' P; U R P(4) = -P(2) '顶点3与顶点2对称
+ q7 o9 Q6 c! S; b. L P(5) = P(3)9 X$ ^1 X7 v; @6 J0 u0 i
Set Pl = ThisDrawing.ModelSpace.AddLightWeightPolyline(P) '画多段线3 M: C0 }! H- O' F) u! h& o, N1 \* z
Pl.Closed = True '多段线闭合; z4 }, g ?6 W6 C% O3 V% A
Pl.SetBulge 1, -(P(3) + 25) / P(2) '第2段改为圆弧) R. y* _$ ^8 y. O, }
End Sub
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: [% Z5 t# C! b6 O[ 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
楼主
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