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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 z- p% h" o2 G7 n" W/ p
- Dim P0(2) As Double, P1 As Variant, P2 As Variant, P3 As Variant, P4 As Variant
+ T5 Z" }2 I4 V - Dim X1 As Double, Y1 As Double, X2 As Double, Y2 As Double, X3 As Double, Y3 As Double
1 o6 z2 F0 y8 N% P# _2 f. _) ^ - Dim A As Double, B As Double, C As Double, F As Double, Ang As Double, R1 As Double, R2 As Double$ S o2 Z* R3 B& i/ u% h! K: V
- On Error GoTo 108 U. `5 x2 }4 j2 g! Q
- With ThisDrawing
9 L! i8 `( p% e( y - P1 = .Utility.GetPoint(, "指定中心点")
! A* |5 R, ~. X7 `/ A( K0 Y$ q ^ - P2 = .Utility.GetPoint(, "指定第一点")# S6 i4 j- g5 @7 Y
- P3 = .Utility.GetPoint(, "指定第二点")
+ S" K$ b; ~! }6 M - P4 = .Utility.GetPoint(, "指定第三点")! V4 h, f- w) U$ C
- X1 = P2(0) - P1(0)
7 D% i! B4 i. S3 Z5 T9 M - Y1 = P2(1) - P1(1)6 x) Y' i9 [, p% A
- X2 = P3(0) - P1(0)) ?: n9 o3 N$ u) }5 f) X' N: b9 B
- Y2 = P3(1) - P1(1)
. w2 |+ e% k2 m! v3 e% I - X3 = P4(0) - P1(0)7 Z# }- N8 H4 p7 x6 b
- Y3 = P4(1) - P1(1)0 j$ A. v& E2 u1 `, h
- A = (X1 * Y1 - X2 * Y2) * (Y1 ^ 2 - Y3 ^ 2) - (X1 * Y1 - X3 * Y3) * (Y1 ^ 2 - Y2 ^ 2)
& h4 Z: b3 s* S: M6 ]* q0 w) [ - If A <> 0 Then
9 S3 w. n) q( O; N: ^ - B = ((X1 ^ 2 - X2 ^ 2) * (X1 * Y1 - X3 * Y3) - (X1 ^ 2 - X3 ^ 2) * (X1 * Y1 - X2 * Y2)) / A/ G- `) J/ S# U- \& Z! }( M
- C = ((X1 ^ 2 - X3 ^ 2) * (Y1 ^ 2 - Y2 ^ 2) - (X1 ^ 2 - X2 ^ 2) * (Y1 ^ 2 - Y3 ^ 2)) / A# z8 Y" z' V! Y4 q
- F = -X1 ^ 2 - B * Y1 ^ 2 - C * X1 * Y1
1 E% C x$ ]& S' E2 s% q b6 Q - If C = 0 Then
6 S9 @- K! k! ?% F5 F2 w9 ~ - If B > 0 And F < 0 Then, y! y6 ^1 E7 u# `/ ]8 i
- Ang = 0
2 o6 m+ ^; m: m - R1 = Sqr(-F): w" n7 J# d: \4 s0 Y+ a
- R2 = Sqr(-F / B)0 S3 Y, h" _1 k
- Else
* Y! [$ j4 S5 P - Exit Sub* J9 T3 ?2 M2 n" M0 Y- l
- End If
; k+ i5 d/ E0 z# I f) ~4 v - Else) e4 g) z0 E# S- y4 Y7 S5 l
- If B = 1 Then, l! M! b, o5 \0 q8 Z. x
- If F < 0 And C > -2 And C < 2 Then
$ Z7 I9 ?/ I E, T! i" L p" J. C4 g - Ang = .Utility.AngleToReal(45, acDegrees)
1 U7 S# ?" B7 D8 q0 A7 b - R1 = Sqr(-2 * F / (2 + C))
8 j0 {3 v7 M# ~6 B! G) S - R2 = Sqr(-2 * F / (2 - C))* B. V& e% G. ? q Q* c k. o9 f
- Else
: H- y/ g* M6 V' [ - Exit Sub! M3 G/ G% {. }" j8 \. n" [; c) C
- End If
' J* Q* v$ U- p; C0 M- O - Else. L- V, _/ V% w* o: I4 z
- Ang = Atn(C / (1 - B)) / 22 e, I* b& j2 t( t
- If Ang < 0 Then Ang = Ang + .Utility.AngleToReal(90, acDegrees)9 O2 B! k# c A* Z+ q1 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 _) E7 ]9 B/ I8 f( l( }$ ]
- B < -1 And F > 0 And C > (B + Tan(Ang) ^ 2) / Tan(Ang) And C < -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) Then+ |" C2 Y0 J2 Q2 u0 {
- R2 = -F * (1 + Tan(Ang) ^ 2)
i' p4 z, A/ w3 A8 E' Z' a - R1 = Sqr(R2 / (1 + B * Tan(Ang) ^ 2 + C * Tan(Ang)))9 k& P+ D% t+ H+ o" h$ q/ t
- R2 = Sqr(R2 / (B + Tan(Ang) ^ 2 - C * Tan(Ang)))+ x& z t B) f3 U" q2 J- K
- Else
- A# x p8 q0 q- n - Exit Sub
) y' V/ W0 A4 y9 O3 ^ - End If
$ z1 h. D; H T) n# F - End If
2 @3 k* c1 T9 P& y6 c - End If/ }0 |' R) z" d0 V, m! D
- Else# Y" Z2 k' M. Q
- Exit Sub
( z" C* ]4 T- R$ C, _ - End If9 d' B+ p# }5 ^# i" ]
- If R2 < R1 Then
+ v' c( [ f1 E5 O - .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang, R1), R2 / R13 \- |! f8 W* z2 V
- Else
8 h( w4 [% F& A( q - .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang + .Utility.AngleToReal(90, acDegrees), R2), R1 / R2! s5 n/ w7 I. N) c3 S% U0 f6 y' _" A
- End If
8 h& p, \0 H7 l P - End With
* m& W$ U1 P% ~0 K% l) d& ] - 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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