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发表于 2007-4-6 19:00:23
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来自： 中国
Sub A(), m+ }4 j( S0 A9 G* p
On Error GoTo 103 o' E# y4 ?% M; o x
Dim La As Double, Ll As Double, O As Variant
1 m: Y# c" s# t Dim Alpha As Double, R As Double
9 i1 F0 K* Y$ t$ G) c) D4 ~: \) T Dim A1 As Double, A2 As Double, A3 As Double
: M; j+ x$ U# V4 A; Z Dim Arc As AcadArc0 b- } x2 \9 w
With ThisDrawing
# ?& _( v5 Z. _8 v1 C) Q, G p" ? La = .Utility.GetDistance(, vbCrLf & "指定弧长:")9 W) ?) p9 d2 G; ~# z# n6 l
Do Until Ll < La And Ll > 03 n9 W" o2 x/ k3 B9 l1 F
Ll = .Utility.GetDistance(, vbCrLf & "指定弦长(小于弧长):")3 ?' U/ k' O; a$ \. k" h9 ]% K
Loop
; O* n. R7 ?- n Q1 V1 x; Q! ] O = .Utility.GetPoint(, vbCrLf & "指定弧的圆心:")
) E6 r3 s. ^9 i8 |' }" T5 _! a/ Z A1 = 0- P1 O! A9 ]9 ~8 I# R
A2 = 3.141592653589792 N" b8 |% m: g, S& L
Do
. y% K* x _) l/ d Alpha = (A1 + A2) / 2
; H) E* N8 q# R A3 = La / Ll * Sin(Alpha)
3 p3 [$ G ~5 P) t6 s" P If Alpha = A1 Or Alpha = A2 Or Alpha = A3 Then
4 _9 x) G' Y; {' Y Exit Do
1 R6 o5 v/ [8 W1 z7 e' P3 z ElseIf A3 < Alpha Then$ W% G! X8 Y) n6 i! l0 ?6 F0 j3 U
A2 = Alpha" L6 W* o# J) l# r7 c
Else- t H' }4 Q& e$ I2 E2 C+ T" ?9 j
A1 = Alpha$ m! L. s6 z# w& W/ q) h& x( `4 V
End If# W% C, V- Z5 E7 s I
Loop/ u e7 W% q% W" n
R = La / Alpha / 2. s6 y$ h+ \. K5 s' ?
Set Arc = .ModelSpace.AddArc(O, R, 1.5707963267949 - Alpha, 1.5707963267949 + Alpha)
( m' `( w6 k$ b, ~ .ModelSpace.AddLine Arc.StartPoint, Arc.EndPoint
8 G+ C2 j$ l, v End With+ G* q! q* [* q( R. f
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
