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发表于 2007-4-6 19:00:23
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来自： 中国
Sub A()
- P6 i& p6 f7 a: eOn Error GoTo 10
7 K5 Y6 Z! H6 K5 ^: ]' S8 b: Q Dim La As Double, Ll As Double, O As Variant( ^. Y. S# r- b4 G# M0 N) C5 l
Dim Alpha As Double, R As Double
0 J, U# \1 q* b+ ?* `) S) W Dim A1 As Double, A2 As Double, A3 As Double- |) D$ ]8 E! V: G: w
Dim Arc As AcadArc0 C; g; k3 H: r: j8 ~+ y4 J
With ThisDrawing
K1 P4 G+ u( j! H La = .Utility.GetDistance(, vbCrLf & "指定弧长:")
7 r& T8 M' s6 H7 } Do Until Ll < La And Ll > 0
% @( a8 ?2 G+ \ Ll = .Utility.GetDistance(, vbCrLf & "指定弦长(小于弧长):")4 v% V* ?& ?4 m) P8 |! [0 e% W. E \
Loop) W0 D8 i8 x' A+ j9 \ E
O = .Utility.GetPoint(, vbCrLf & "指定弧的圆心:")/ V, Y- Z7 W% E" Z
A1 = 0
) k4 T, Y. K% O1 J/ t2 L6 N# e A2 = 3.14159265358979- A( K8 f4 K( e8 |# b
Do9 @' U! w8 p2 T" e- n2 B) D
Alpha = (A1 + A2) / 2/ D2 F' l7 r/ I1 U
A3 = La / Ll * Sin(Alpha)9 ?) Z, i" ~, x" h' R
If Alpha = A1 Or Alpha = A2 Or Alpha = A3 Then; k* D/ I" f& T- U! `
Exit Do
' Z$ o/ |5 s) _' A: ^; N( I ElseIf A3 < Alpha Then) g. y6 W" v" Z3 t
A2 = Alpha8 O7 h% j/ i3 T9 L4 F1 \
Else
/ H* J: K; H; b. {2 C5 b" z A1 = Alpha( ~2 }3 ?" K/ f9 f6 w: j3 J
End If
9 C" W; R: f8 l Loop/ L9 h; y9 g1 z3 l9 B
R = La / Alpha / 2. D9 i- B5 l4 g
Set Arc = .ModelSpace.AddArc(O, R, 1.5707963267949 - Alpha, 1.5707963267949 + Alpha)
+ R% e4 b$ o0 K2 S5 u .ModelSpace.AddLine Arc.StartPoint, Arc.EndPoint4 u" w' \. _+ Y3 {) V8 N
End With
( K" O6 _ o4 v, L" Q% A& \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
