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发表于 2015-1-19 12:32:28
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怎么没人回呢? - Sub C3PE()( Y' O' r3 ~( z% [) E
- Dim P0(2) As Double, P1 As Variant, P2 As Variant, P3 As Variant, P4 As Variant
! k* i; a2 V4 d* e% J6 \1 O - Dim X1 As Double, Y1 As Double, X2 As Double, Y2 As Double, X3 As Double, Y3 As Double& B3 _0 P2 G3 }! i
- Dim A As Double, B As Double, C As Double, F As Double, Ang As Double, R1 As Double, R2 As Double
* U" l# N' {5 S+ `3 {. H& N: a7 k - On Error GoTo 10
: Z& x. ^. Y4 m% _$ i$ d - With ThisDrawing, ^( K- k& x1 h# n' |
- P1 = .Utility.GetPoint(, "指定中心点")
; ~# \$ n, w; s' d - P2 = .Utility.GetPoint(, "指定第一点")
+ {+ N8 u3 `: T8 X; h - P3 = .Utility.GetPoint(, "指定第二点")
* v1 R+ I+ p. F# Z) W - P4 = .Utility.GetPoint(, "指定第三点")
; B% x% f3 I) j. e" c0 \5 V; a( S$ _ - X1 = P2(0) - P1(0)
$ b* |: O/ ~% a( G- A - Y1 = P2(1) - P1(1)
3 B! P% g. h9 e: b/ c) E' o - X2 = P3(0) - P1(0)
8 i+ I; T+ X3 v8 f1 d - Y2 = P3(1) - P1(1), j* z9 k. r* G- q) N
- X3 = P4(0) - P1(0), }( g6 m8 A# w' f" M" C; y) H7 a
- Y3 = P4(1) - P1(1); I; E c, `9 n6 q: s
- A = (X1 * Y1 - X2 * Y2) * (Y1 ^ 2 - Y3 ^ 2) - (X1 * Y1 - X3 * Y3) * (Y1 ^ 2 - Y2 ^ 2)% P! i2 u K* P2 z
- If A <> 0 Then
' Z2 O3 B! }9 C% j% A4 d+ u$ e - B = ((X1 ^ 2 - X2 ^ 2) * (X1 * Y1 - X3 * Y3) - (X1 ^ 2 - X3 ^ 2) * (X1 * Y1 - X2 * Y2)) / A5 C" _8 v) p) n! K" `
- C = ((X1 ^ 2 - X3 ^ 2) * (Y1 ^ 2 - Y2 ^ 2) - (X1 ^ 2 - X2 ^ 2) * (Y1 ^ 2 - Y3 ^ 2)) / A
% u3 P$ Z! J. g1 C- F B& c - F = -X1 ^ 2 - B * Y1 ^ 2 - C * X1 * Y1 M, D! Z0 \% u/ t
- If C = 0 Then2 F& w. ~6 K0 K: S* i- y
- If B > 0 And F < 0 Then
9 C4 ^; p! W7 {1 y# g, t7 R - Ang = 0* ]4 e6 R+ j. Q. s* p. {0 d" \
- R1 = Sqr(-F)
8 ?! {5 r( F+ g0 k. z! l - R2 = Sqr(-F / B)1 \5 J. J, X' P8 }
- Else
3 y- d" q4 `6 S$ E - Exit Sub7 q9 T8 M# H- R* S' J, t5 W8 }
- End If
4 O% k. a+ @1 v0 M( s - Else9 I9 k! w$ t+ H' i1 o2 [2 Q, i( a( {
- If B = 1 Then
! w0 Q6 T8 B o+ x+ b - If F < 0 And C > -2 And C < 2 Then2 o% k. Y9 T- r
- Ang = .Utility.AngleToReal(45, acDegrees)" g3 d, n3 v6 V% d
- R1 = Sqr(-2 * F / (2 + C))2 B1 r- C, b3 h" {6 |* w
- R2 = Sqr(-2 * F / (2 - C))
$ _, u$ |, `: M( }. t - Else$ N* j7 _; s- G
- Exit Sub
* N# c) ?1 V. V- h - End If
- H1 T& }, P5 ?% {; O; L- l a8 p$ A - Else$ s, A7 k. M1 r4 u$ t4 _
- Ang = Atn(C / (1 - B)) / 2
" z6 C, l4 D. ^ - If Ang < 0 Then Ang = Ang + .Utility.AngleToReal(90, acDegrees)2 k, s- `# y/ c, 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 _
# ~! { e& f: p! E- | - B < -1 And F > 0 And C > (B + Tan(Ang) ^ 2) / Tan(Ang) And C < -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) Then% W3 L* a! M6 W; `
- R2 = -F * (1 + Tan(Ang) ^ 2)7 L1 B7 r& U1 o% c3 J: k6 I( ]
- R1 = Sqr(R2 / (1 + B * Tan(Ang) ^ 2 + C * Tan(Ang)))) p `" ~+ I& g! B w- }
- R2 = Sqr(R2 / (B + Tan(Ang) ^ 2 - C * Tan(Ang)))- z3 Z1 j8 G4 z! O( |% J
- Else( @. `: @9 @6 w
- Exit Sub
0 E& t0 ]. [8 p5 a C; O* K' g7 t - End If$ i' @4 j1 V1 ?/ b3 O4 N
- End If
4 z& T+ e- m& D6 Q' H - End If
& |: D2 c) |* z) \ - Else$ \6 p9 m/ |1 T" V, X$ d
- Exit Sub
1 w3 k( y) j& M - End If
/ S* P4 P& Q+ l } - If R2 < R1 Then2 G! A* B! B v+ Y; E) d: |3 K
- .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang, R1), R2 / R1# ]' W! m; t8 \
- Else! Q4 i+ R; T! J- F5 j$ G
- .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang + .Utility.AngleToReal(90, acDegrees), R2), R1 / R2
7 T5 R' L; w& z1 n( \! y - End If
/ `; L# `+ M# d% K - End With. {1 A9 D- z# L0 Q: O+ l9 G
- 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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