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发表于 2007-4-6 19:00:23
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来自： 中国
Sub A()
- ^) ]/ ?" R, FOn Error GoTo 10
8 R8 ]9 B) e2 O4 v) q3 J; d2 j Dim La As Double, Ll As Double, O As Variant7 f) v5 Y/ x- j# `
Dim Alpha As Double, R As Double* ~" r% f1 P7 y
Dim A1 As Double, A2 As Double, A3 As Double2 d* a Y& Q$ x g" S! S- i
Dim Arc As AcadArc' ^# y& I! s+ E' O9 i5 R
With ThisDrawing
2 d5 Z- Y" N4 l5 N La = .Utility.GetDistance(, vbCrLf & "指定弧长:")% \! r# a* u* X
Do Until Ll < La And Ll > 0+ N3 q8 i6 ]/ K# |
Ll = .Utility.GetDistance(, vbCrLf & "指定弦长(小于弧长):")3 o/ S2 G4 ^/ L' o* w9 @
Loop
8 K8 G/ _4 G0 \7 J O = .Utility.GetPoint(, vbCrLf & "指定弧的圆心:"), T: O% v, L! o" ]* }
A1 = 0; R* U$ T! d J5 e! ?
A2 = 3.14159265358979
3 m, y4 p1 A8 D1 x7 l/ F+ T Do7 K6 }, Z2 \4 @" p
Alpha = (A1 + A2) / 2
* X! O8 o3 M% x$ y A3 = La / Ll * Sin(Alpha): x- s9 U0 L" N. ^% l' u! {
If Alpha = A1 Or Alpha = A2 Or Alpha = A3 Then, x- _, Q3 x g) F& ~) }+ Y; H
Exit Do9 J; \) x3 y* c1 r' ?
ElseIf A3 < Alpha Then
5 b# v$ ?& ^' P3 l# r! Y+ j. r A2 = Alpha
: D! O0 B o! }) R1 A$ [ Else1 M! P0 l+ L( T; O
A1 = Alpha
. _. Y& S/ o( J3 ]6 P" k$ { End If. Z$ L9 Y$ M8 c1 Y6 Z
Loop
3 m' \0 y/ a# \) J9 M R = La / Alpha / 21 G, n7 {2 ]& v# m' W/ \1 c0 W6 S
Set Arc = .ModelSpace.AddArc(O, R, 1.5707963267949 - Alpha, 1.5707963267949 + Alpha)
* T7 k/ e/ c" i3 [5 f1 o3 k .ModelSpace.AddLine Arc.StartPoint, Arc.EndPoint
3 B& E8 C9 [6 |0 P End With6 i6 K7 ]+ z$ c# q( [' ^
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
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