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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()
: `5 n! a2 S! F2 `0 s9 F$ S L - Dim P0(2) As Double, P1 As Variant, P2 As Variant, P3 As Variant, P4 As Variant
" x2 a0 A4 K: n& b$ w* J$ G - Dim X1 As Double, Y1 As Double, X2 As Double, Y2 As Double, X3 As Double, Y3 As Double7 W& ?* E$ q' Q% I, B/ C3 o x
- Dim A As Double, B As Double, C As Double, F As Double, Ang As Double, R1 As Double, R2 As Double
5 J" W+ K) l& ?& z3 ~* [ - On Error GoTo 10' k A; w. R; f6 E" s
- With ThisDrawing) O x& x& V7 w7 S
- P1 = .Utility.GetPoint(, "指定中心点")
- Q3 A! t- V; T& ~# W' ^+ }6 ` - P2 = .Utility.GetPoint(, "指定第一点")# Z) p8 E' ?' F
- P3 = .Utility.GetPoint(, "指定第二点")# d& e8 M4 v5 Q3 V2 h2 Z
- P4 = .Utility.GetPoint(, "指定第三点")0 Z& D) c. `6 C# I C
- X1 = P2(0) - P1(0)$ y j* d2 R- j: h. i4 J
- Y1 = P2(1) - P1(1); j% ^2 q: Q$ R, N% O, g& ]
- X2 = P3(0) - P1(0)
( h |( o2 U" Y+ C0 c& ] - Y2 = P3(1) - P1(1)
/ z$ Y- S4 H# U2 e - X3 = P4(0) - P1(0)# o2 [0 p; T" L$ ?3 H- |% h h
- Y3 = P4(1) - P1(1)
. n! R0 T/ n; u9 n" |& ^ - A = (X1 * Y1 - X2 * Y2) * (Y1 ^ 2 - Y3 ^ 2) - (X1 * Y1 - X3 * Y3) * (Y1 ^ 2 - Y2 ^ 2)
" e' x/ q( t' W' X' b - If A <> 0 Then$ X7 t2 m8 g5 B" ]: z
- B = ((X1 ^ 2 - X2 ^ 2) * (X1 * Y1 - X3 * Y3) - (X1 ^ 2 - X3 ^ 2) * (X1 * Y1 - X2 * Y2)) / A
1 {7 J- d' J7 N$ O) k - C = ((X1 ^ 2 - X3 ^ 2) * (Y1 ^ 2 - Y2 ^ 2) - (X1 ^ 2 - X2 ^ 2) * (Y1 ^ 2 - Y3 ^ 2)) / A
* U. a9 o( @* \# [0 C) d; ?2 k4 I - F = -X1 ^ 2 - B * Y1 ^ 2 - C * X1 * Y1
R. A) M( M% W9 N, B - If C = 0 Then* F y) N( D$ Q! Y# G& }0 D! M& u
- If B > 0 And F < 0 Then& k/ @# b' B9 e. {
- Ang = 0' z5 G6 D1 O3 b9 y
- R1 = Sqr(-F)
# j$ S+ o9 ?8 W7 U6 [. p; y+ A; X0 F - R2 = Sqr(-F / B)
& _0 R" M% Q# E# ?* C5 t - Else
' k- X2 c! G& R z - Exit Sub( `; z0 }7 L$ w0 o
- End If
6 c/ K& l p# k: |- c' X - Else* x, ?& J: C. E. k1 N
- If B = 1 Then! w1 I. Y/ ]: d
- If F < 0 And C > -2 And C < 2 Then
- ~1 ]8 o2 H6 Y$ j. r( t3 l - Ang = .Utility.AngleToReal(45, acDegrees)- Z% k8 k9 Y) w6 k" m) O
- R1 = Sqr(-2 * F / (2 + C))+ a ]( E9 }1 B& \& r+ I
- R2 = Sqr(-2 * F / (2 - C))5 G! e% A2 x7 `: `( N2 n! o
- Else
6 \1 a6 X# U! @; q( C r0 O - Exit Sub
4 W5 [+ a, r+ z4 g. ?6 Z* |# K - End If
$ x" ]# H9 q! x - Else
% Q+ X- e3 L1 k% d' C - Ang = Atn(C / (1 - B)) / 26 Y4 x. W% O3 R4 k9 n
- If Ang < 0 Then Ang = Ang + .Utility.AngleToReal(90, acDegrees)
+ A, U% v- S' ~. }$ `0 x1 i - If B > -1 And F < 0 And C > -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) And C < (B + Tan(Ang) ^ 2) / Tan(Ang) Or _( f$ B7 e. ^- M5 Q8 ]7 v
- B < -1 And F > 0 And C > (B + Tan(Ang) ^ 2) / Tan(Ang) And C < -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) Then+ L! S, n* _1 S/ i
- R2 = -F * (1 + Tan(Ang) ^ 2)7 F( k0 P5 g, v2 S% z4 a$ P
- R1 = Sqr(R2 / (1 + B * Tan(Ang) ^ 2 + C * Tan(Ang)))
6 s9 A& C: I4 C% O$ ? - R2 = Sqr(R2 / (B + Tan(Ang) ^ 2 - C * Tan(Ang)))
3 y( S2 E9 C' a( \% D - Else
, r$ m$ u7 a; r - Exit Sub
) E9 } {/ d% M3 N - End If) e' T0 S" e% v h! g8 V
- End If
; B9 t, Y- p/ d9 M7 b: b" T - End If
' v! Q. c( r% e) m P* G1 X - Else
) c, c+ S; B1 M# Z, R - Exit Sub4 g8 n9 I) j! @; M
- End If
9 y# y" ]$ X; s& \" D J" E: \ - If R2 < R1 Then% C) E! V# _: G. F" r6 t; n+ e
- .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang, R1), R2 / R1
: K! D3 [ N d( Y) X( u, S - Else
! m3 P& F2 w- \+ J; ]4 V - .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang + .Utility.AngleToReal(90, acDegrees), R2), R1 / R2
. I) W2 _& a, Z$ T- m - End If5 m9 \. I8 Y# M; v# f7 l- Q
- End With
8 I* s3 G# Z. e+ q - 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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