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发表于 2015-1-19 12:32:28
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来自: 中国辽宁抚顺
怎么没人回呢? - Sub C3PE()
, C# u9 }+ a8 i+ W - Dim P0(2) As Double, P1 As Variant, P2 As Variant, P3 As Variant, P4 As Variant o6 W" d" u# n# _8 ^
- Dim X1 As Double, Y1 As Double, X2 As Double, Y2 As Double, X3 As Double, Y3 As Double
& h: y7 |: c7 B, N) i% x - Dim A As Double, B As Double, C As Double, F As Double, Ang As Double, R1 As Double, R2 As Double) h7 g! x& W, \
- On Error GoTo 10
( h' l# {. C( I, ? - With ThisDrawing
. A+ `0 l" M# n) @# r! k - P1 = .Utility.GetPoint(, "指定中心点")
2 j! h+ b# ~* ]6 a5 H( u+ A# a6 Y4 c - P2 = .Utility.GetPoint(, "指定第一点")- k6 \' w! {' O& j
- P3 = .Utility.GetPoint(, "指定第二点"): `) P/ z7 {, }
- P4 = .Utility.GetPoint(, "指定第三点")
: O5 D) U) A9 a1 s; b# N7 q$ B - X1 = P2(0) - P1(0)
4 f) g7 F5 H2 J5 C+ f4 w6 w" x1 k - Y1 = P2(1) - P1(1)
6 @! ^: T1 [' L2 W3 z# U - X2 = P3(0) - P1(0), H4 ?6 {6 v h8 P" C2 f
- Y2 = P3(1) - P1(1). T6 [9 D! h* d: s2 q, L; w
- X3 = P4(0) - P1(0)- }/ a. l* w4 m3 n5 y; [1 C
- Y3 = P4(1) - P1(1)
/ r C V5 c. a5 @: S5 l! X7 T2 K - A = (X1 * Y1 - X2 * Y2) * (Y1 ^ 2 - Y3 ^ 2) - (X1 * Y1 - X3 * Y3) * (Y1 ^ 2 - Y2 ^ 2)
7 F) `$ d& y; Z L' G; C6 R - If A <> 0 Then) d/ f6 m. i% V8 e. u8 K
- B = ((X1 ^ 2 - X2 ^ 2) * (X1 * Y1 - X3 * Y3) - (X1 ^ 2 - X3 ^ 2) * (X1 * Y1 - X2 * Y2)) / A; z% {) M7 r; x0 \
- C = ((X1 ^ 2 - X3 ^ 2) * (Y1 ^ 2 - Y2 ^ 2) - (X1 ^ 2 - X2 ^ 2) * (Y1 ^ 2 - Y3 ^ 2)) / A' W" y2 ?7 w$ `, G, D
- F = -X1 ^ 2 - B * Y1 ^ 2 - C * X1 * Y1% n; u0 D8 A0 m2 H) M7 X
- If C = 0 Then
9 Z: [% S; H. U - If B > 0 And F < 0 Then
' @ n( W3 i# D5 } - Ang = 07 [- i S, [- O, f/ J% D
- R1 = Sqr(-F)
9 d$ ^' v# h3 i% P9 ]- y' b. p# m: O - R2 = Sqr(-F / B)
1 m3 y* V2 W) M - Else
) h" V" x1 s9 g8 B" \ p$ O - Exit Sub
- y5 N3 _5 X0 F* J* U0 V4 ` - End If5 Y; I# L" H+ `1 b; Z# i! q- \
- Else- l4 }! ]9 ~+ _' u9 h
- If B = 1 Then) A: ?; \+ S6 T3 [5 L' o V1 U
- If F < 0 And C > -2 And C < 2 Then% O$ ~; f B4 x$ O1 J v" m
- Ang = .Utility.AngleToReal(45, acDegrees)' {6 ~2 F. N a; G' O$ E8 ^
- R1 = Sqr(-2 * F / (2 + C))3 ^; q+ }6 w; k1 g7 H: J1 r
- R2 = Sqr(-2 * F / (2 - C))
5 S: v9 x; F" R2 r - Else
" }8 l5 B" f3 a! b* O% ` - Exit Sub
* |7 \6 w% _* ]( e/ o4 @' Q/ j - End If& ~1 A1 d1 P2 a3 v
- Else7 f0 i4 [5 T! C) i$ m
- Ang = Atn(C / (1 - B)) / 2% T& x1 u* ?' V. q4 Z3 l! i
- If Ang < 0 Then Ang = Ang + .Utility.AngleToReal(90, acDegrees)
/ f& N7 `* G) `7 U4 k$ T$ y - If B > -1 And F < 0 And C > -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) And C < (B + Tan(Ang) ^ 2) / Tan(Ang) Or _
3 m! \, a6 q! o) }9 o - B < -1 And F > 0 And C > (B + Tan(Ang) ^ 2) / Tan(Ang) And C < -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) Then! K( p# e) s, j2 c' S: ?, q4 r
- R2 = -F * (1 + Tan(Ang) ^ 2)# R: z5 w7 I. Q5 H
- R1 = Sqr(R2 / (1 + B * Tan(Ang) ^ 2 + C * Tan(Ang)))' i8 G( _; O+ t$ x# s
- R2 = Sqr(R2 / (B + Tan(Ang) ^ 2 - C * Tan(Ang)))8 V. Z0 v* U" b/ W/ b4 }; X
- Else
- l4 S3 I5 j* b) h% W9 D3 Z: R - Exit Sub
! U* v7 z% a& Q& W# e1 f- O4 h - End If
# ]0 s% R! T, g( k - End If! J$ e0 ?: I! R
- End If
2 y5 f8 I" h# n7 O - Else
# h+ `6 e3 R4 y* D& S0 ]9 J - Exit Sub- {; Y C" J# Y- |3 I' x5 |
- End If
# o& ?" }0 V1 `# V - If R2 < R1 Then/ e0 ?% E4 d0 }4 u
- .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang, R1), R2 / R19 [: ` P! D6 o' J
- Else
: p# x% r, S) G5 a6 u - .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang + .Utility.AngleToReal(90, acDegrees), R2), R1 / R2. W4 H+ V' `' N% T! L% T0 i
- End If: i* \( z1 ?" {/ F7 y* o5 K2 R
- End With
H& F4 m) M; {. N. v - 10 End Sub
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