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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()8 a# D6 r' N2 H8 v3 ^: ^4 Q
- Dim P0(2) As Double, P1 As Variant, P2 As Variant, P3 As Variant, P4 As Variant
' V8 a. `) J3 M1 m$ N - Dim X1 As Double, Y1 As Double, X2 As Double, Y2 As Double, X3 As Double, Y3 As Double
8 E3 ?& y% C7 r9 f4 l - Dim A As Double, B As Double, C As Double, F As Double, Ang As Double, R1 As Double, R2 As Double( s! F( _1 O3 T& g
- On Error GoTo 10
' {5 o, J2 |- a9 |1 a - With ThisDrawing
- K) Z- x# @7 T% h; n5 h2 T - P1 = .Utility.GetPoint(, "指定中心点")
2 k3 o4 ~7 J) E' U - P2 = .Utility.GetPoint(, "指定第一点"). }9 e* Q( ?* Z! ~) H% g" Q
- P3 = .Utility.GetPoint(, "指定第二点")
( h8 ^0 s1 R' B7 ~- q5 U - P4 = .Utility.GetPoint(, "指定第三点")% `& F0 ` T2 o
- X1 = P2(0) - P1(0)! J: U8 L4 c0 s9 o3 y& \
- Y1 = P2(1) - P1(1)
' n6 b& O( R; {9 a/ {( j; k9 S - X2 = P3(0) - P1(0)
, N, m- G+ \7 P* d2 h J - Y2 = P3(1) - P1(1)$ L! T/ z$ O% {& m; }2 o4 Q' T
- X3 = P4(0) - P1(0)
- l- }' D% `% H3 W) e" ?/ [" ]) y - Y3 = P4(1) - P1(1)
! t& {1 O) i) D0 d - A = (X1 * Y1 - X2 * Y2) * (Y1 ^ 2 - Y3 ^ 2) - (X1 * Y1 - X3 * Y3) * (Y1 ^ 2 - Y2 ^ 2)8 i& m2 ^! a1 M1 z0 }) e A% z
- If A <> 0 Then
7 D5 ^) C7 ^" P3 b" u' X - B = ((X1 ^ 2 - X2 ^ 2) * (X1 * Y1 - X3 * Y3) - (X1 ^ 2 - X3 ^ 2) * (X1 * Y1 - X2 * Y2)) / A% X5 b8 D! `0 `6 |/ [
- C = ((X1 ^ 2 - X3 ^ 2) * (Y1 ^ 2 - Y2 ^ 2) - (X1 ^ 2 - X2 ^ 2) * (Y1 ^ 2 - Y3 ^ 2)) / A8 o- {8 t" Y& r! d$ B T0 C
- F = -X1 ^ 2 - B * Y1 ^ 2 - C * X1 * Y19 G, |: E$ m2 H3 L# M' X2 u1 }) {4 Q
- If C = 0 Then
! V, O, X c0 s+ }/ y5 h1 k - If B > 0 And F < 0 Then
2 a3 \ j( X- d* J. Z - Ang = 0: W+ P+ f0 `6 |9 m
- R1 = Sqr(-F)
# M3 t8 B0 b% @; l( m; x - R2 = Sqr(-F / B)! q* w/ q$ d$ F8 j) }" y
- Else4 {+ L8 A( Y: u/ v$ O, F2 x
- Exit Sub- r5 T! K9 R5 L+ i) Y D7 L8 u
- End If
/ s5 G& _, a* |% e' P - Else5 D* B' x5 D& e! h. J3 f
- If B = 1 Then
5 t5 r% X8 M6 _+ ^. j1 F - If F < 0 And C > -2 And C < 2 Then. C) @+ \, y, L3 R! k0 m$ \
- Ang = .Utility.AngleToReal(45, acDegrees)& m3 F# o" ~3 Z; {: }7 h4 {! O
- R1 = Sqr(-2 * F / (2 + C))6 O" K6 H2 b7 {& v
- R2 = Sqr(-2 * F / (2 - C))' J; L8 g8 N& c$ c4 J5 i/ t
- Else6 Y- N Q1 p G2 j
- Exit Sub
( b, a* @% K* y. g! K - End If
b- D$ i8 p5 h - Else
9 j$ ], Z X; [. i/ N* J; {( t - Ang = Atn(C / (1 - B)) / 2
: L) C- g6 ~- c8 Y5 s6 n; U - If Ang < 0 Then Ang = Ang + .Utility.AngleToReal(90, acDegrees)
/ X1 X3 L* Q! \. i& h - If B > -1 And F < 0 And C > -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) And C < (B + Tan(Ang) ^ 2) / Tan(Ang) Or _
$ D. v; E, a$ x: j - B < -1 And F > 0 And C > (B + Tan(Ang) ^ 2) / Tan(Ang) And C < -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) Then
; m: Y- n/ s C - R2 = -F * (1 + Tan(Ang) ^ 2)- R' j" `8 ?# L/ I5 X6 y0 a) i! Q
- R1 = Sqr(R2 / (1 + B * Tan(Ang) ^ 2 + C * Tan(Ang)))6 F2 p9 N6 c5 K' v
- R2 = Sqr(R2 / (B + Tan(Ang) ^ 2 - C * Tan(Ang)))7 D8 S6 `. a2 d0 o
- Else# Q) G6 d/ Z7 d( H$ G y) ?
- Exit Sub* g. V: J8 l: q# h$ S) M n! U
- End If
5 z8 Q. a2 Y% W* B. O+ |' o" L& R& j% H - End If
; e# a% Z7 s- s4 N0 n - End If3 j, `4 k0 ^& N( r5 R% t
- Else
; f( W- T6 o# e* {: p - Exit Sub
@ G( P1 I' k. i - End If
# [5 k; U) S2 ]8 Q/ P/ ~ - If R2 < R1 Then4 G+ U' D" c) x$ X% h
- .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang, R1), R2 / R1# N" g0 l; V( d; M
- Else/ D& i# B( ^* y+ z( [
- .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang + .Utility.AngleToReal(90, acDegrees), R2), R1 / R2: p5 N$ B/ \- q9 F/ H
- End If# Z/ b( g9 ?3 _4 ^6 b
- End With
9 X# ?% V: V0 E - 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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