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发表于 2007-4-6 19:00:23
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来自： 中国
Sub A()
+ f' ?* ]9 w0 b8 G5 w% A0 D/ MOn Error GoTo 10
3 N f2 a! H( v# e* B. w Dim La As Double, Ll As Double, O As Variant
* _% X# p7 N5 K$ \: P Dim Alpha As Double, R As Double* `* Y2 \1 L; W& O
Dim A1 As Double, A2 As Double, A3 As Double
5 C( L; F4 q$ O8 u d Dim Arc As AcadArc9 t% |. o" b5 P. i
With ThisDrawing
* q$ @& V& O" i) d- D La = .Utility.GetDistance(, vbCrLf & "指定弧长:")8 P' _/ P/ \+ o; l; P. v
Do Until Ll < La And Ll > 0
' q6 ]4 h- f. Q Ll = .Utility.GetDistance(, vbCrLf & "指定弦长(小于弧长):")# d: }/ u1 I! c) |& H
Loop; t7 O% j! a3 i+ ]
O = .Utility.GetPoint(, vbCrLf & "指定弧的圆心:")
) @0 M% _$ M% Z6 y' {% Q. d A1 = 0
- ~8 a1 s# [8 P1 M: n8 D* y A2 = 3.14159265358979
0 l: I1 ]: _% L, w0 U Do& N- h* \/ \) X
Alpha = (A1 + A2) / 2
* F) O* p+ E! I5 g( T3 }8 t0 U A3 = La / Ll * Sin(Alpha)
8 \. g+ t, d& E2 |2 m If Alpha = A1 Or Alpha = A2 Or Alpha = A3 Then
: Z4 R: {/ M M4 r' H1 e Exit Do( S$ F8 |& [0 m# r
ElseIf A3 < Alpha Then
; ~% z) m. T' L; Y6 @ A2 = Alpha
& r7 m" F3 G- O Else
% \( n3 A6 f; J* n$ R4 W) i- _' W A1 = Alpha/ A! k) t* }9 Z
End If
2 N- H* H& E6 A# \5 {8 p" I: M: l Loop
; a7 L( W) | M8 ` R = La / Alpha / 26 R; {; q) k. Q1 s2 |
Set Arc = .ModelSpace.AddArc(O, R, 1.5707963267949 - Alpha, 1.5707963267949 + Alpha)/ D j0 T% M! F
.ModelSpace.AddLine Arc.StartPoint, Arc.EndPoint
! P; X$ `; }+ ?6 }4 V2 ? End With$ F" U2 h3 o/ A2 d/ {
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
