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发表于 2007-4-6 19:00:23
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来自： 中国
Sub A()
/ \( j# @. m/ y7 i- [4 O* LOn Error GoTo 10' Y) e E& J$ q! `4 W( s2 s$ U
Dim La As Double, Ll As Double, O As Variant' { V4 M7 g' y. }0 q5 g0 R) U$ r
Dim Alpha As Double, R As Double
. ~3 x# C" o/ g4 |4 ] Dim A1 As Double, A2 As Double, A3 As Double) R3 \+ c2 i! e$ M. \
Dim Arc As AcadArc5 A4 R( V, `& A. h
With ThisDrawing
8 A3 L, R) W+ |7 V& v La = .Utility.GetDistance(, vbCrLf & "指定弧长:")- ?) Z7 f a# M/ |
Do Until Ll < La And Ll > 0
% g9 ~6 v) j# ~6 ^+ ?/ D- z Ll = .Utility.GetDistance(, vbCrLf & "指定弦长(小于弧长):")- v) e* I' r5 F5 P d& Y# {2 u
Loop1 C$ [# ?; t. ^# c& ?5 H
O = .Utility.GetPoint(, vbCrLf & "指定弧的圆心:")* X9 \) R/ q# `, P* g6 ~+ m
A1 = 0
! K) M. h9 B, W; z2 y A2 = 3.141592653589798 T( Q, p) F! d& N$ y7 H
Do
. W9 s" J4 O/ s5 U Alpha = (A1 + A2) / 2. t. P$ j" c0 N$ z7 R
A3 = La / Ll * Sin(Alpha)1 `; J) t# Z$ z- A$ e& S
If Alpha = A1 Or Alpha = A2 Or Alpha = A3 Then
- t2 q! {6 A# ]* x* f Exit Do2 o6 S+ k, r1 E( }+ }$ m
ElseIf A3 < Alpha Then1 N% ]6 i$ P) z4 j: }- U" E
A2 = Alpha
) b4 C6 W% I/ y8 h2 U; ~' u% r Else6 | b5 p8 ?$ S" I' f& f8 `
A1 = Alpha
" D; @9 @) H9 t3 t6 N# F2 f End If7 B) q- U+ H# `# t, d, G* k
Loop
8 ?6 \' O5 @# `+ |) n R = La / Alpha / 2
2 Q3 P6 F0 J2 V+ j9 W0 U! [ Set Arc = .ModelSpace.AddArc(O, R, 1.5707963267949 - Alpha, 1.5707963267949 + Alpha)
" n/ d. ~3 J- u0 F .ModelSpace.AddLine Arc.StartPoint, Arc.EndPoint, e) g7 @* C8 ^% X. L# _
End With$ w4 z, D' g. p- I$ p 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
楼主
