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发表于 2007-4-6 19:00:23
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来自： 中国
Sub A()
* m& Q* c# U% x$ y- N9 p4 y5 o6 L# rOn Error GoTo 10% d. u* s x0 j3 ]1 _
Dim La As Double, Ll As Double, O As Variant
% M2 e2 L) ]) | Dim Alpha As Double, R As Double
( {5 C/ q4 Q0 d7 Q \- e Dim A1 As Double, A2 As Double, A3 As Double9 _) B( M! D( _! }" H1 x
Dim Arc As AcadArc% z: q# Y- d" b
With ThisDrawing
- }+ ^: y: o Q. y La = .Utility.GetDistance(, vbCrLf & "指定弧长:")+ ?. F6 f9 g. T( j( W$ k
Do Until Ll < La And Ll > 08 N. Z8 h( \( K1 [% a! a# g
Ll = .Utility.GetDistance(, vbCrLf & "指定弦长(小于弧长):"). {) C! c6 i8 ]5 Z: v
Loop
6 Y( b4 i' Y7 c' K" @( ?2 X1 u2 Y O = .Utility.GetPoint(, vbCrLf & "指定弧的圆心:")
# h9 E. j v* U0 [7 g A1 = 08 \+ q: E+ D6 H0 V
A2 = 3.141592653589797 I; ?6 i' {& i" _; C- f
Do1 G2 A7 t* h4 @4 e: H
Alpha = (A1 + A2) / 24 w8 M* V, r% f2 |! h6 q6 }
A3 = La / Ll * Sin(Alpha)
# o( b$ S2 L! ^: W2 ` If Alpha = A1 Or Alpha = A2 Or Alpha = A3 Then
- f) K+ l/ P/ @* B" ^ Exit Do0 Z- q2 {( a* h- t" U+ a
ElseIf A3 < Alpha Then
" O- g8 q7 P) T; {$ }3 N o2 F A2 = Alpha
; ?# ^5 ?* _4 Q6 A- |8 m) [ Else
& M2 G+ ]' I% O1 d7 l/ K5 m A1 = Alpha. d" _* } T2 [* t& J; R
End If. z1 g2 j" A$ A7 X1 T
Loop& V; {' J8 W% N; d+ g/ y. j: x
R = La / Alpha / 2' N. B1 V+ W f" b j
Set Arc = .ModelSpace.AddArc(O, R, 1.5707963267949 - Alpha, 1.5707963267949 + Alpha)7 k- {0 L6 d0 H8 N
.ModelSpace.AddLine Arc.StartPoint, Arc.EndPoint2 W' a% g: k, r$ B. p
End With* j1 j1 ~0 H1 ^8 W0 g
10: End Sub |
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发表于 2007-4-6 13:59:18
发表于 2007-4-6 16:20:03
楼主
