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发表于 2007-4-6 19:00:23
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来自： 中国
Sub A()
6 T. A- }- d9 d4 Q. [3 eOn Error GoTo 10
) S- W5 n' j1 v& O& L Dim La As Double, Ll As Double, O As Variant* z( |3 Z& ?3 E, A- k
Dim Alpha As Double, R As Double# d" g/ g8 P+ l+ X9 n
Dim A1 As Double, A2 As Double, A3 As Double
& ~) r3 S0 d; a0 E. u" {8 q Dim Arc As AcadArc
# I$ ~$ z. s0 o+ e- [ With ThisDrawing
1 ?- Y7 s1 P% A La = .Utility.GetDistance(, vbCrLf & "指定弧长:")
& w% i* ^4 o9 ] f4 W$ z# _7 a2 s Do Until Ll < La And Ll > 0
! e8 ~6 R- [' k4 { Ll = .Utility.GetDistance(, vbCrLf & "指定弦长(小于弧长):")
: @/ {* h3 |+ I8 u Loop
6 `3 F! y( A1 Y J+ a* c O = .Utility.GetPoint(, vbCrLf & "指定弧的圆心:")2 u3 x* S) c7 v6 y+ j
A1 = 0
7 w- J X/ B J9 G( a0 Z" n/ b A2 = 3.14159265358979
$ O4 ^2 a4 F8 H5 }4 ]- E Do
& r9 T+ Z. n7 N$ g% J8 n! b$ B Alpha = (A1 + A2) / 24 [6 J5 W2 w/ V, F q2 N, N. J1 k% w
A3 = La / Ll * Sin(Alpha)
/ Z" y$ R1 g$ ^& z$ e ?7 S. Z If Alpha = A1 Or Alpha = A2 Or Alpha = A3 Then3 |+ k3 w% b1 V p) q$ G- v
Exit Do
% \: B# K! R: N9 I+ E ElseIf A3 < Alpha Then
! y0 X: w5 k( f A2 = Alpha
5 X e8 P) `/ h/ K Else$ [. Y, i' `: R1 ~' z
A1 = Alpha
3 s# w) \5 Q# l3 ]7 K End If
' F, K+ P9 g) l1 i Loop6 N, N- t& M: g
R = La / Alpha / 2
$ a2 @/ _; p, \' @7 e Set Arc = .ModelSpace.AddArc(O, R, 1.5707963267949 - Alpha, 1.5707963267949 + Alpha)
9 v! V0 I# |3 q8 a4 y( R .ModelSpace.AddLine Arc.StartPoint, Arc.EndPoint" A& P& D; u) H2 e
End With
3 c: W7 _& z# R) G9 E! s10: 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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