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发表于 2007-4-6 19:00:23
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来自： 中国
Sub A()
8 M8 y1 L. t2 h0 ROn Error GoTo 10
9 S9 u. O( Y/ ]1 v4 T4 H7 \ Dim La As Double, Ll As Double, O As Variant
; x r+ r) E/ }- B Dim Alpha As Double, R As Double
# w" Z2 @3 A; ~: X3 U+ U! U) }! F4 ~. F Dim A1 As Double, A2 As Double, A3 As Double
' Z* \( }1 R8 c# V Dim Arc As AcadArc
1 G. \9 ^' F& I B* M0 r2 N6 Y5 C With ThisDrawing. ~- N; U' @3 z8 I( H- m& W/ N' |
La = .Utility.GetDistance(, vbCrLf & "指定弧长:")" |0 s6 U4 Z; _
Do Until Ll < La And Ll > 0
" y9 |( a$ [/ F) H6 q Ll = .Utility.GetDistance(, vbCrLf & "指定弦长(小于弧长):")" H( _+ a9 U# t( n/ ]3 G2 n2 t
Loop
9 f, V |: X0 f3 _" n% s O = .Utility.GetPoint(, vbCrLf & "指定弧的圆心:"). L; b8 _7 q9 E4 B
A1 = 0
- @( n0 Q' P8 n! B6 r' r6 ] A2 = 3.14159265358979
$ y9 T: O5 _) ^ F Do: R& l* s9 P( r5 k7 X
Alpha = (A1 + A2) / 2
% a* F3 c& p, Q3 q6 G A3 = La / Ll * Sin(Alpha)4 B, C1 S8 P: Q
If Alpha = A1 Or Alpha = A2 Or Alpha = A3 Then* E7 x3 W4 r3 \
Exit Do
, M6 l4 l- T* U2 @' G& |) t, x7 j0 z ElseIf A3 < Alpha Then
/ p2 e" A" E' P) Z8 s1 j" y$ M) ] A2 = Alpha
; S; i$ A# G' E1 q Else1 [9 C3 w+ W, t, p3 c" X
A1 = Alpha% d) N- ^. I) {
End If
1 W8 A! _1 i+ L" V3 Q Loop2 }" b/ R+ @' E* Y, D) ^
R = La / Alpha / 23 d9 c/ D. J5 q6 {8 u2 z5 i" D1 F
Set Arc = .ModelSpace.AddArc(O, R, 1.5707963267949 - Alpha, 1.5707963267949 + Alpha)
3 u7 e4 p7 b4 Y+ ^ .ModelSpace.AddLine Arc.StartPoint, Arc.EndPoint6 N7 Z4 o' n" V1 g7 V2 M
End With
6 o2 a. o) _( b7 Q) Z* j10: 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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