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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()
: P" E5 X- x9 B4 A8 m+ V' f" j8 X2 F2 c - Dim P0(2) As Double, P1 As Variant, P2 As Variant, P3 As Variant, P4 As Variant
* L! z7 V. u$ [+ r# `' O0 B - Dim X1 As Double, Y1 As Double, X2 As Double, Y2 As Double, X3 As Double, Y3 As Double: h8 h& L- \# X8 U
- Dim A As Double, B As Double, C As Double, F As Double, Ang As Double, R1 As Double, R2 As Double
9 q3 n3 ?/ h! e1 I - On Error GoTo 10
. U& T( @; _1 V0 ^$ S - With ThisDrawing
( V$ |: }8 I8 a% k, F' y. h" A8 C - P1 = .Utility.GetPoint(, "指定中心点")
8 K0 o# `' c [- W' M8 ? - P2 = .Utility.GetPoint(, "指定第一点")& d. Q& F8 t; c* N+ {- N7 @( }
- P3 = .Utility.GetPoint(, "指定第二点"); y7 ]' j. B4 U0 [+ _( }% J5 |
- P4 = .Utility.GetPoint(, "指定第三点")) X$ g2 S- d' d
- X1 = P2(0) - P1(0)' v! d" D0 c4 Z
- Y1 = P2(1) - P1(1)
" o' A6 \! j1 \9 r; ]3 _/ [: z- { - X2 = P3(0) - P1(0)2 v% K3 Z! G f+ M* @ ^0 b$ A
- Y2 = P3(1) - P1(1)" f' i" L* O3 W2 U( _1 L
- X3 = P4(0) - P1(0)
* h, F9 A" {/ v6 Q - Y3 = P4(1) - P1(1)$ @- O+ B3 T- K" S- J! L, a6 F
- A = (X1 * Y1 - X2 * Y2) * (Y1 ^ 2 - Y3 ^ 2) - (X1 * Y1 - X3 * Y3) * (Y1 ^ 2 - Y2 ^ 2)
! ~! O) {( A6 B P/ K3 }5 g+ [ - If A <> 0 Then
* p8 ~$ R1 o5 H$ U+ g3 s; d - B = ((X1 ^ 2 - X2 ^ 2) * (X1 * Y1 - X3 * Y3) - (X1 ^ 2 - X3 ^ 2) * (X1 * Y1 - X2 * Y2)) / A
5 }% E! r4 B# w7 ` - C = ((X1 ^ 2 - X3 ^ 2) * (Y1 ^ 2 - Y2 ^ 2) - (X1 ^ 2 - X2 ^ 2) * (Y1 ^ 2 - Y3 ^ 2)) / A% Q. U* _- D; ]/ f
- F = -X1 ^ 2 - B * Y1 ^ 2 - C * X1 * Y1" [4 E3 ^* ?% A0 Z5 S1 S
- If C = 0 Then
6 K* u6 p# P- S1 k1 s0 c - If B > 0 And F < 0 Then& ^4 q) i3 _! h& \& ]: j
- Ang = 0
$ C! v* e( l! M! L- s, V - R1 = Sqr(-F)4 u, J/ W4 X \% } y# X, ?' x2 ~
- R2 = Sqr(-F / B)
1 _* o/ L/ y) N/ G9 L: r - Else
* R2 o; |" L+ M; `, S" Z4 Z - Exit Sub3 G- t9 s, h0 t: M
- End If
) \$ r6 t/ }( z4 X/ n/ [ - Else
4 R! H5 _. \0 G/ q7 l4 z. Z' X - If B = 1 Then% b, x8 c x% R
- If F < 0 And C > -2 And C < 2 Then. C+ T/ ?8 y- m: P# T
- Ang = .Utility.AngleToReal(45, acDegrees)
1 g; ]& \0 a4 c! f/ O X, l- | - R1 = Sqr(-2 * F / (2 + C))3 e8 e+ a* B w$ I# G
- R2 = Sqr(-2 * F / (2 - C))
& K, ~& B& m' k' K2 L7 B, I - Else0 N( p6 Z( B5 A
- Exit Sub6 K* g/ r! }8 S4 q: e
- End If7 I+ A1 h& |9 ^) N4 `
- Else& d; t9 \9 ~0 p% A
- Ang = Atn(C / (1 - B)) / 22 O. p5 z! A8 \$ \+ W4 [
- If Ang < 0 Then Ang = Ang + .Utility.AngleToReal(90, acDegrees)
2 o3 Z* s3 C0 Z, Y) 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 _
) Z" b# |/ X" e4 j8 A4 J1 s6 R- a - B < -1 And F > 0 And C > (B + Tan(Ang) ^ 2) / Tan(Ang) And C < -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) Then
+ p& }/ R1 { e6 q6 [ - R2 = -F * (1 + Tan(Ang) ^ 2)) @1 u; G- ^8 I) W" B) o" t
- R1 = Sqr(R2 / (1 + B * Tan(Ang) ^ 2 + C * Tan(Ang)))
0 e+ g7 }3 Z2 L0 y- k z, K - R2 = Sqr(R2 / (B + Tan(Ang) ^ 2 - C * Tan(Ang)))/ b6 Y- H* _7 i. x4 I; }
- Else' W. `4 K3 o5 e
- Exit Sub) W8 m/ v! S' x4 Y7 X p5 y, u
- End If
8 E; ^: c: G* ]+ S( v, ` - End If
8 w% m8 O8 q9 B% E) `' B - End If# O8 q5 q" | h* h2 h9 j: J! F
- Else
( v5 E3 W5 f6 N - Exit Sub* z0 Z# S2 Z2 R' w' L- S; F6 p
- End If6 ^7 v. q! A/ u! W/ E
- If R2 < R1 Then
* {; P& l- e' I - .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang, R1), R2 / R1
: Y4 v8 l3 I7 F( l6 l - Else! h2 q$ ]( ?, D
- .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang + .Utility.AngleToReal(90, acDegrees), R2), R1 / R26 ~; [2 I: C% E; H& Z! b7 {& u! s
- End If3 D+ l% n& E- H3 l' x) v( j
- End With& F+ D7 Z( j0 }! q2 ?* u" s6 z
- 10 End Sub
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发表于 2015-1-14 00:13:04
发表于 2015-1-19 14:23:08
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