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发表于 2007-4-6 19:00:23
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来自： 中国
Sub A()3 [# _. [5 l; n
On Error GoTo 10$ O, @( R, U, d+ C& a( l
Dim La As Double, Ll As Double, O As Variant
' p5 M4 f4 O: s! }! B. z3 I2 H Dim Alpha As Double, R As Double; {! R. u8 M% F
Dim A1 As Double, A2 As Double, A3 As Double
3 H7 A& M4 A2 M+ t# T" c Dim Arc As AcadArc! ^- p6 M6 x+ m8 Z, G+ ~
With ThisDrawing
X ~8 `) I! s La = .Utility.GetDistance(, vbCrLf & "指定弧长:")4 u* H& C8 U2 M& e8 x1 k+ L
Do Until Ll < La And Ll > 0& Y* w/ N1 `- r8 F) M8 V
Ll = .Utility.GetDistance(, vbCrLf & "指定弦长(小于弧长):")
( x, {# P3 T5 w7 t8 \. h2 _4 _9 C Loop J$ E; ^- E) v1 o
O = .Utility.GetPoint(, vbCrLf & "指定弧的圆心:")
9 k4 H5 a. \8 p( Z& b2 _6 V A1 = 04 k. \3 J$ ~* @# h6 C! S
A2 = 3.14159265358979$ P+ k! |2 f: F" L# c' A
Do" _7 u/ \! D4 p
Alpha = (A1 + A2) / 2# s: P% }& V G3 \. v
A3 = La / Ll * Sin(Alpha)1 ^0 |0 u# h& e% O- [3 a1 p
If Alpha = A1 Or Alpha = A2 Or Alpha = A3 Then
- f1 ]0 \% h1 m1 F) q0 D4 O9 j; j3 d7 F Exit Do/ I& K: _$ \' `1 z/ N# ^: R: M, x
ElseIf A3 < Alpha Then
1 y6 g: H- _. B( m A2 = Alpha
7 K# V! l( Q* h5 z' O Else
% L, u. h3 |* n$ }: N A1 = Alpha
/ v, C) T2 J6 j! Z a* g' X End If
# l2 t& b. t" i- L: v Loop' z c5 G6 `% @
R = La / Alpha / 2
# T' y; b6 Y1 f5 X2 P Set Arc = .ModelSpace.AddArc(O, R, 1.5707963267949 - Alpha, 1.5707963267949 + Alpha)* h- s5 m2 v7 _
.ModelSpace.AddLine Arc.StartPoint, Arc.EndPoint
' p2 {5 \3 x8 X2 E" s' _" Z End With
& C; \ f6 ^3 x V2 I10: End Sub |
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发表于 2007-4-6 13:59:18
发表于 2007-4-6 16:20:03
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