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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()
* y% G* a4 ^( N+ u3 a5 Z - Dim P0(2) As Double, P1 As Variant, P2 As Variant, P3 As Variant, P4 As Variant
( W5 o2 O2 y; h - Dim X1 As Double, Y1 As Double, X2 As Double, Y2 As Double, X3 As Double, Y3 As Double
' U5 D6 R' Y) O& Y" M+ d* s. n7 } - Dim A As Double, B As Double, C As Double, F As Double, Ang As Double, R1 As Double, R2 As Double
8 H$ F+ o7 F# N. N3 b - On Error GoTo 10: x" M" d* q) V
- With ThisDrawing
& ]: S% B. B- v5 Z0 v. r( m# [7 r+ f - P1 = .Utility.GetPoint(, "指定中心点"), r, \" c* Y& D i) V; R
- P2 = .Utility.GetPoint(, "指定第一点")* \; {; w5 S1 F2 V J
- P3 = .Utility.GetPoint(, "指定第二点")
( [3 d9 {8 L. k9 U8 y& R n - P4 = .Utility.GetPoint(, "指定第三点")
1 l9 P6 c6 M+ R8 t - X1 = P2(0) - P1(0), ?2 ^. Z" ~, M8 a0 T6 o \3 I
- Y1 = P2(1) - P1(1)$ S; V2 q. l0 N4 S. } l6 S
- X2 = P3(0) - P1(0)& O& x, I) q: S' G5 O3 r
- Y2 = P3(1) - P1(1)
" K. `+ `- a9 [! g5 ]. Z8 A0 |- a: I - X3 = P4(0) - P1(0)/ U+ e1 o6 w- D2 C/ g* j
- Y3 = P4(1) - P1(1): J& J2 _' p: j; x- q7 ]* r" a
- A = (X1 * Y1 - X2 * Y2) * (Y1 ^ 2 - Y3 ^ 2) - (X1 * Y1 - X3 * Y3) * (Y1 ^ 2 - Y2 ^ 2): N$ H& Y( \5 ~/ @2 q9 A
- If A <> 0 Then
+ P+ m; q* o+ J - B = ((X1 ^ 2 - X2 ^ 2) * (X1 * Y1 - X3 * Y3) - (X1 ^ 2 - X3 ^ 2) * (X1 * Y1 - X2 * Y2)) / A
$ U# c: T# {( q: m - C = ((X1 ^ 2 - X3 ^ 2) * (Y1 ^ 2 - Y2 ^ 2) - (X1 ^ 2 - X2 ^ 2) * (Y1 ^ 2 - Y3 ^ 2)) / A. P% ^: w3 M$ d5 k$ r, y# N
- F = -X1 ^ 2 - B * Y1 ^ 2 - C * X1 * Y1" z' D l& Z+ Q2 e, C
- If C = 0 Then6 o# B) m! W) [
- If B > 0 And F < 0 Then$ ^, ^* |# @" ^+ E: {7 b2 T2 q
- Ang = 0
& Y0 c: f0 I& k# r$ C% `1 |* i) p - R1 = Sqr(-F)! k/ e0 A A0 ?+ T' z! z
- R2 = Sqr(-F / B)
* [: E- g' d6 n, ~6 @ - Else1 {) O2 e g! f: W, X
- Exit Sub
( w' D( p8 }- N n3 v+ L+ Z- w/ w - End If
* V" q' Z2 A& U8 D - Else0 Q1 X9 J! T5 m% v# U8 i) X5 n" {
- If B = 1 Then. n8 p- ]7 {6 q3 x* F Z; [% l) S0 G
- If F < 0 And C > -2 And C < 2 Then5 ~/ X) b5 `5 [5 p z
- Ang = .Utility.AngleToReal(45, acDegrees)
6 R' F2 @& V/ L9 c4 e% j* }8 f - R1 = Sqr(-2 * F / (2 + C))' c- v$ w+ f E1 J# n% s
- R2 = Sqr(-2 * F / (2 - C))
: g5 X& Y0 g1 K2 H0 ]% u+ h- {8 N) S - Else
7 M) r# g3 q* s$ B$ f* F9 L; E - Exit Sub% f& w" ~ m; v$ p
- End If. m' S) a6 e* x+ B9 w
- Else
/ R& ^! j1 U- [5 q: ~ - Ang = Atn(C / (1 - B)) / 2
$ |9 \5 ^* ]: D$ U' [ - If Ang < 0 Then Ang = Ang + .Utility.AngleToReal(90, acDegrees)# X, _ {/ L1 u4 t% q& |4 Y2 ?
- If B > -1 And F < 0 And C > -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) And C < (B + Tan(Ang) ^ 2) / Tan(Ang) Or _7 T: p! P! s( w% d+ u1 J/ E
- B < -1 And F > 0 And C > (B + Tan(Ang) ^ 2) / Tan(Ang) And C < -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) Then
0 H6 a2 |9 T7 S1 i0 l2 m1 B# R - R2 = -F * (1 + Tan(Ang) ^ 2)
. K, x) t2 [7 t/ G" N2 D3 ^ - R1 = Sqr(R2 / (1 + B * Tan(Ang) ^ 2 + C * Tan(Ang)))
& ~6 g2 q8 k+ z1 t# R9 R' i - R2 = Sqr(R2 / (B + Tan(Ang) ^ 2 - C * Tan(Ang)))1 B- h+ |0 p; I, I5 G( z, G A# ?0 G
- Else, t" b9 M$ L2 g* [$ V/ E
- Exit Sub
' Q* k, r8 D: X! O5 ~$ X - End If4 V! e' L. L3 x/ J; M& w) r
- End If
3 ^8 `6 A) t- w5 S - End If- |- o$ e9 Q s8 y' Y' l
- Else
# \; `. [* \) K% @* Z - Exit Sub
% T5 ?5 w" p; H5 L3 A - End If- N. U" X5 ?2 F: T
- If R2 < R1 Then
6 R$ T9 j& _) q: `$ q - .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang, R1), R2 / R1- Z6 I. ^/ X0 t; }: m9 _
- Else
8 x/ U; d6 N* ~ - .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang + .Utility.AngleToReal(90, acDegrees), R2), R1 / R2, i B' Q$ \ X
- End If- {* ]1 v6 |% H& n% J; T0 C3 _: k
- End With
' w$ e, F2 p; ^6 Q& A; A4 \ - 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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