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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- u% G- p4 x+ O - Dim P0(2) As Double, P1 As Variant, P2 As Variant, P3 As Variant, P4 As Variant* }# H4 k, `) u4 R- [; o" t2 p4 g' P
- Dim X1 As Double, Y1 As Double, X2 As Double, Y2 As Double, X3 As Double, Y3 As Double7 n& l* Z- i* w
- Dim A As Double, B As Double, C As Double, F As Double, Ang As Double, R1 As Double, R2 As Double
1 ~" J1 |$ Z7 m3 D+ } - On Error GoTo 10
+ R% s) V7 W- @2 S6 G! `2 N - With ThisDrawing
: [4 V g/ w/ {( j4 ^5 W1 \ - P1 = .Utility.GetPoint(, "指定中心点")
6 Z4 ]* P/ u6 |- K) M' G k7 D - P2 = .Utility.GetPoint(, "指定第一点")( P4 U! Q. O6 F( t5 \ i2 R6 C3 B" W
- P3 = .Utility.GetPoint(, "指定第二点")6 m& j5 x7 I8 k9 P6 K
- P4 = .Utility.GetPoint(, "指定第三点")8 N' E9 D* c$ P* n4 |7 x- r
- X1 = P2(0) - P1(0)
) a( V4 D4 U, f7 V5 d, t0 }3 D - Y1 = P2(1) - P1(1), O% G6 a7 f1 S# X8 [8 G3 C
- X2 = P3(0) - P1(0)" \2 F" X' h* i, V* |
- Y2 = P3(1) - P1(1)1 z8 f% q/ V F1 p
- X3 = P4(0) - P1(0)
6 _0 k" P" T' s% G7 M7 T. i - Y3 = P4(1) - P1(1)2 [* I \% x" {: Q
- A = (X1 * Y1 - X2 * Y2) * (Y1 ^ 2 - Y3 ^ 2) - (X1 * Y1 - X3 * Y3) * (Y1 ^ 2 - Y2 ^ 2)
) ~6 E b ^: B/ _# ^) w# _ - If A <> 0 Then: z8 J& \& I( w. u) v9 n
- B = ((X1 ^ 2 - X2 ^ 2) * (X1 * Y1 - X3 * Y3) - (X1 ^ 2 - X3 ^ 2) * (X1 * Y1 - X2 * Y2)) / A
; I, L8 f+ |; Q4 r: c' h8 Y: I - C = ((X1 ^ 2 - X3 ^ 2) * (Y1 ^ 2 - Y2 ^ 2) - (X1 ^ 2 - X2 ^ 2) * (Y1 ^ 2 - Y3 ^ 2)) / A8 r0 b. L7 \7 K- G
- F = -X1 ^ 2 - B * Y1 ^ 2 - C * X1 * Y1
4 W4 K, X; m# ` - If C = 0 Then' J1 H! C2 v# x' Q* ]6 t
- If B > 0 And F < 0 Then( Z& i D: r: o4 [% ~7 g
- Ang = 0
: I) y% s7 u! ?/ i3 h+ _7 ], ~ - R1 = Sqr(-F)) k, f g" f) e( w: o
- R2 = Sqr(-F / B)/ N2 _( p/ y4 A/ H5 L7 n8 w
- Else3 h9 Z4 J9 ^4 O
- Exit Sub
; @/ [3 ^+ x9 k - End If" E i7 @6 X U' [* v, y
- Else% ` w- \& `) J1 p8 T3 A) a4 \. V$ R
- If B = 1 Then
$ {% q! S3 H5 f - If F < 0 And C > -2 And C < 2 Then
6 {% R2 |9 p$ D5 l: A - Ang = .Utility.AngleToReal(45, acDegrees)
& g- Q' _/ N/ x3 D' Q - R1 = Sqr(-2 * F / (2 + C))2 b# @ T' Y2 \5 g+ N
- R2 = Sqr(-2 * F / (2 - C))0 {/ v9 S9 B. M9 Q n0 L" E" T, {$ T% h
- Else- t( u8 K( a8 L+ s
- Exit Sub
1 V& X1 R! T( v0 D7 k" B; ` - End If" k; K( S" U' O' h- r2 H* R
- Else: F, w, O" X4 ~& P a' H- {
- Ang = Atn(C / (1 - B)) / 2; z3 H1 j! Q& V& n
- If Ang < 0 Then Ang = Ang + .Utility.AngleToReal(90, acDegrees)/ v, I, X; V9 J- C( b9 Z/ }
- If B > -1 And F < 0 And C > -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) And C < (B + Tan(Ang) ^ 2) / Tan(Ang) Or _) [' o. E# Z' W
- B < -1 And F > 0 And C > (B + Tan(Ang) ^ 2) / Tan(Ang) And C < -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) Then3 H+ a0 k! d/ ]+ N7 |" V& C( _: a6 }3 b
- R2 = -F * (1 + Tan(Ang) ^ 2)
3 {8 @4 @+ y5 v: M D$ Q- F - R1 = Sqr(R2 / (1 + B * Tan(Ang) ^ 2 + C * Tan(Ang))); c/ P) _; J9 i" ^, @( w0 A
- R2 = Sqr(R2 / (B + Tan(Ang) ^ 2 - C * Tan(Ang)))
* }# J! f; }6 q& ]( G, d! [# g - Else' O- }, l7 h* f
- Exit Sub
/ r8 d) r4 L0 h6 x- } - End If
# [5 C& M% q) o. o* U1 r' S/ G - End If" a) a& }) v/ u
- End If9 n6 y8 A2 b2 L+ Z8 p6 C! K
- Else
. `/ s9 @, a! i0 u o - Exit Sub2 ^3 m/ Q/ h: ~9 A' s& V
- End If
; }3 g- f% }3 } - If R2 < R1 Then9 E- x7 L, v& |# d! R/ T
- .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang, R1), R2 / R1( U3 w& Z0 G( L" p! M' p5 P6 @
- Else- h: e- [0 z- T! \+ ?7 {( q% K8 L
- .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang + .Utility.AngleToReal(90, acDegrees), R2), R1 / R2
* [, W3 l4 y1 R) } - End If
) f. U: z7 ~( C- ?$ ` - End With4 k; [2 l. S$ c( ]
- 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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