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发表于 2007-4-6 19:00:23
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来自： 中国
Sub A()
# v S/ H' s+ ^. o$ Y9 ]On Error GoTo 10, u. @2 E9 g" A
Dim La As Double, Ll As Double, O As Variant
) n, W2 x* k# ]& _# e; z$ S1 \ Dim Alpha As Double, R As Double
. e4 ~5 d6 v' J$ n% _" b Dim A1 As Double, A2 As Double, A3 As Double
2 i/ ?. x4 i4 J Dim Arc As AcadArc" N7 N& z5 Q* D( M
With ThisDrawing
% ^; l$ N9 g0 ]0 k8 v La = .Utility.GetDistance(, vbCrLf & "指定弧长:")3 ]5 \) E- R0 Q- Z; X- E
Do Until Ll < La And Ll > 0; Z$ z+ C Y, _5 j
Ll = .Utility.GetDistance(, vbCrLf & "指定弦长(小于弧长):"). J) ~6 @% x! \1 a- @
Loop
q- @0 n& ^& ^) H2 ?1 Z O = .Utility.GetPoint(, vbCrLf & "指定弧的圆心:")
5 W8 p4 z! I- K& ?( f/ N A1 = 0
+ O1 c% u, H4 s$ w4 T8 r A2 = 3.14159265358979
, `( o8 j( {+ N9 l4 i) G8 c( U Do
8 S" P0 b3 e6 [" j( W& J Alpha = (A1 + A2) / 2, Z8 \/ Y: i0 k {& G
A3 = La / Ll * Sin(Alpha)
6 _) L: u9 `( _9 P3 E( t If Alpha = A1 Or Alpha = A2 Or Alpha = A3 Then
3 q4 }1 {. |" R, S Exit Do+ l% l5 w. ^! F5 P4 |" |' G
ElseIf A3 < Alpha Then
2 M I' H( F8 C, n) g A2 = Alpha9 Q5 V; l* C! [. R7 @: t8 R
Else
4 a# `% C7 z- e, G A1 = Alpha9 H4 R' d; t2 H1 S
End If
/ y) q g4 X$ h# |4 U/ J% j Loop
. }7 t! e3 Q# J c( \2 e R = La / Alpha / 27 b- N, \# `* X U, e
Set Arc = .ModelSpace.AddArc(O, R, 1.5707963267949 - Alpha, 1.5707963267949 + Alpha)0 E' [% d; i1 ~8 S9 _1 X
.ModelSpace.AddLine Arc.StartPoint, Arc.EndPoint6 F0 x% Q( V! B0 \5 b0 a9 W: L
End With
4 A" J; i" W( @4 K- b10: 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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