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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()) k/ ` ?7 }2 X" t) s6 ?1 c
- Dim P0(2) As Double, P1 As Variant, P2 As Variant, P3 As Variant, P4 As Variant
0 a- k, P+ s% I) _; D% S1 r - Dim X1 As Double, Y1 As Double, X2 As Double, Y2 As Double, X3 As Double, Y3 As Double
6 Q. D f( q0 v8 Q2 {4 V* W. \ - Dim A As Double, B As Double, C As Double, F As Double, Ang As Double, R1 As Double, R2 As Double
3 _4 T+ j& `9 S4 u) S1 ~! C - On Error GoTo 10& E& F8 Y6 w9 n6 |& `% B9 e& g
- With ThisDrawing
! w. v$ C \' Y/ n( @# a I - P1 = .Utility.GetPoint(, "指定中心点")
6 M2 y1 ?, ?$ G: m/ j& W - P2 = .Utility.GetPoint(, "指定第一点")
& X4 L3 W" W8 z7 b1 j5 N- T+ f - P3 = .Utility.GetPoint(, "指定第二点")
) F. s- g, z9 \4 G6 x9 B - P4 = .Utility.GetPoint(, "指定第三点")$ `7 z! e2 q) U% x
- X1 = P2(0) - P1(0)
" o ~3 z$ H8 t, x: C) G( a - Y1 = P2(1) - P1(1)
3 p, m+ [3 O* Y2 X' @' ^ - X2 = P3(0) - P1(0)
. h% [3 R+ B: G. Y7 P }# ]# o - Y2 = P3(1) - P1(1)
; G' X; U; r. N6 j1 e u - X3 = P4(0) - P1(0)( V; G$ K& D8 N1 t
- Y3 = P4(1) - P1(1)9 ~2 P2 U4 T6 W' u. X! \
- A = (X1 * Y1 - X2 * Y2) * (Y1 ^ 2 - Y3 ^ 2) - (X1 * Y1 - X3 * Y3) * (Y1 ^ 2 - Y2 ^ 2)& s C6 F( W) o4 E
- If A <> 0 Then, B- D0 D/ v) S# W
- B = ((X1 ^ 2 - X2 ^ 2) * (X1 * Y1 - X3 * Y3) - (X1 ^ 2 - X3 ^ 2) * (X1 * Y1 - X2 * Y2)) / A3 t, q. e& o+ G, W; J$ c+ m
- C = ((X1 ^ 2 - X3 ^ 2) * (Y1 ^ 2 - Y2 ^ 2) - (X1 ^ 2 - X2 ^ 2) * (Y1 ^ 2 - Y3 ^ 2)) / A1 T( f! C$ R# d0 N# t! D, U
- F = -X1 ^ 2 - B * Y1 ^ 2 - C * X1 * Y1
4 }# j3 R* h- {7 `: B0 H - If C = 0 Then
. E) I1 `/ `7 S8 e4 u - If B > 0 And F < 0 Then
; ~+ h6 l+ @# L+ x3 x. z- _ - Ang = 0
+ C: d; z' A- H5 M3 J - R1 = Sqr(-F)+ p- C1 B6 @" `& W
- R2 = Sqr(-F / B)$ g* s. w- i& {& C7 ^7 l& j
- Else
: C, q) Q& j9 X, f - Exit Sub
; z8 M# _' y1 O) l2 I - End If
# P( U- l, }- u - Else8 r2 I% N8 I/ Z3 [$ B
- If B = 1 Then
! B, Z+ S- ^6 H* j - If F < 0 And C > -2 And C < 2 Then
# [$ F( p6 I& ~7 W! ~7 l2 ` - Ang = .Utility.AngleToReal(45, acDegrees)1 y& D" F- \( F& h
- R1 = Sqr(-2 * F / (2 + C))
2 g# @9 Y' w( a' O# ~ - R2 = Sqr(-2 * F / (2 - C))7 b( k) D( s0 p, I. N/ \
- Else/ F \0 T5 @6 t) i2 Y
- Exit Sub
: I" d" v, s. H - End If* x' y6 C2 Z9 n- c
- Else# B' H# S8 J/ ~1 p1 j# D4 D. x
- Ang = Atn(C / (1 - B)) / 20 |5 a% B- {. R( n
- If Ang < 0 Then Ang = Ang + .Utility.AngleToReal(90, acDegrees)2 [- V3 j- A# ?8 A6 Y
- If B > -1 And F < 0 And C > -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) And C < (B + Tan(Ang) ^ 2) / Tan(Ang) Or _& a+ }/ r' \+ ]% I3 J
- B < -1 And F > 0 And C > (B + Tan(Ang) ^ 2) / Tan(Ang) And C < -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) Then7 n: H: ]) D. K) [" u
- R2 = -F * (1 + Tan(Ang) ^ 2)
9 {9 m) g- `! [! K$ M - R1 = Sqr(R2 / (1 + B * Tan(Ang) ^ 2 + C * Tan(Ang))) h. T f" ?8 J7 }$ {- Z) G
- R2 = Sqr(R2 / (B + Tan(Ang) ^ 2 - C * Tan(Ang)))
6 }1 l3 H$ S; Z* e4 v$ H+ Z0 H - Else' |2 {& P2 I, J! s8 K
- Exit Sub
' |$ R' U7 x* |0 s% ?: j* Y( w - End If$ ^( I$ r/ P: }
- End If; m4 @7 n/ J4 v- h% q: ?* p: N
- End If7 d9 R: ]8 C, `& q& ?% {( \7 Y8 E
- Else' C9 }0 M2 Y& N: I3 G, n- `% Y
- Exit Sub
& a( ~" H% J* [) B; N8 f; ^ - End If0 g" z3 K8 _, ^" X# E& ^
- If R2 < R1 Then! c: k- F- {3 g: U* G4 }
- .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang, R1), R2 / R19 m4 p8 |8 F2 W7 a" k
- Else* V/ s7 t/ e5 l8 _7 _
- .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang + .Utility.AngleToReal(90, acDegrees), R2), R1 / R2: d- y( t# _; s3 V U9 P& Z
- End If
1 ^$ `6 s& ?" O* T* L( D; p6 e1 \ - End With8 O" s6 s" N" u# z5 H$ P
- 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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