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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()' M& g, G- L5 k" J- W% h- M9 v* h
- Dim P0(2) As Double, P1 As Variant, P2 As Variant, P3 As Variant, P4 As Variant$ U+ ]$ H$ A8 _& d1 u
- Dim X1 As Double, Y1 As Double, X2 As Double, Y2 As Double, X3 As Double, Y3 As Double" ]0 j; R W$ E t
- Dim A As Double, B As Double, C As Double, F As Double, Ang As Double, R1 As Double, R2 As Double
; ]) k6 V4 F* C4 F; C - On Error GoTo 10
6 f5 f5 P; O% }% L0 ?5 [ - With ThisDrawing4 r: z' @0 ]' ~# _: y! f$ ]
- P1 = .Utility.GetPoint(, "指定中心点")
6 V/ C; B3 P0 O& H- U! W - P2 = .Utility.GetPoint(, "指定第一点")8 w5 Z" c: P @0 @6 v0 A3 d% [
- P3 = .Utility.GetPoint(, "指定第二点")9 V1 I" s3 X& ?( ~/ _
- P4 = .Utility.GetPoint(, "指定第三点")' t. @$ p) ?6 l% q5 C. H3 B
- X1 = P2(0) - P1(0)
8 x7 C, H6 C4 G' w& X$ k7 o9 Y - Y1 = P2(1) - P1(1)0 T$ ^8 ]! L) c( V6 i
- X2 = P3(0) - P1(0)
- F5 ]2 @4 d3 b" x9 `* Z4 Z) A - Y2 = P3(1) - P1(1)3 a& w. I6 @6 W) ?- u9 m7 Z
- X3 = P4(0) - P1(0)# v$ {' u! v" E
- Y3 = P4(1) - P1(1)
- N( o! } I9 F4 x$ f - A = (X1 * Y1 - X2 * Y2) * (Y1 ^ 2 - Y3 ^ 2) - (X1 * Y1 - X3 * Y3) * (Y1 ^ 2 - Y2 ^ 2) ]+ y7 A: V% v' h" ~1 I
- If A <> 0 Then' w6 d6 H# E7 V! g f! w9 X
- B = ((X1 ^ 2 - X2 ^ 2) * (X1 * Y1 - X3 * Y3) - (X1 ^ 2 - X3 ^ 2) * (X1 * Y1 - X2 * Y2)) / A$ C. R; O- E7 l" g% A
- C = ((X1 ^ 2 - X3 ^ 2) * (Y1 ^ 2 - Y2 ^ 2) - (X1 ^ 2 - X2 ^ 2) * (Y1 ^ 2 - Y3 ^ 2)) / A
* d1 f. `1 M! }- [2 t: r - F = -X1 ^ 2 - B * Y1 ^ 2 - C * X1 * Y1
# }+ ^- ?# ?5 u5 N- L) L - If C = 0 Then
/ L4 j5 D$ }2 m+ B - If B > 0 And F < 0 Then
" \8 j, B. G$ E* b( N( w6 X; _ - Ang = 04 E/ G, a5 U; A
- R1 = Sqr(-F)
& y7 P) D2 B+ J+ m! I0 V - R2 = Sqr(-F / B)1 s+ {7 L9 J- `$ E: H) G; K
- Else+ b* D, u8 v* u* f
- Exit Sub+ P$ ^$ Q: x9 |, x9 L) P% ]
- End If
- K. |4 n1 \7 m1 N - Else3 @8 |1 @" p9 _4 X0 s7 p
- If B = 1 Then
- j( z" e* @. k4 U& g, A$ T - If F < 0 And C > -2 And C < 2 Then. Q. k5 v) n- A0 Z8 `+ F$ j
- Ang = .Utility.AngleToReal(45, acDegrees)& Q" G$ J6 H. z" C: C
- R1 = Sqr(-2 * F / (2 + C))0 u h5 [0 h) w4 P; S3 c0 |3 }
- R2 = Sqr(-2 * F / (2 - C)). i& a6 i! b0 r: T& l9 A; K
- Else
9 f6 M, L6 w. p# l/ v- e6 j& u$ a - Exit Sub
- a% [5 F7 h( M2 p2 Z& z - End If; @$ O9 }) R* r& d
- Else
; V O% Y/ p9 Y8 ] - Ang = Atn(C / (1 - B)) / 2
. S" n. p4 Y- Q( P* L" [# d/ Z - If Ang < 0 Then Ang = Ang + .Utility.AngleToReal(90, acDegrees)
! o4 t8 S$ f; }% G, A! J" F - If B > -1 And F < 0 And C > -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) And C < (B + Tan(Ang) ^ 2) / Tan(Ang) Or _
/ Q8 f* W+ ^2 |8 K2 @1 L$ j - B < -1 And F > 0 And C > (B + Tan(Ang) ^ 2) / Tan(Ang) And C < -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) Then; w8 q' h2 y6 x& u- k1 |, l
- R2 = -F * (1 + Tan(Ang) ^ 2)
" j2 h9 [- k' ` - R1 = Sqr(R2 / (1 + B * Tan(Ang) ^ 2 + C * Tan(Ang)))1 S0 q9 H" I, Q' l1 H6 M" a
- R2 = Sqr(R2 / (B + Tan(Ang) ^ 2 - C * Tan(Ang)))
5 V: M1 N( n; H( g: t7 t - Else
1 _ T/ m4 Y4 e* h - Exit Sub
6 E* X! M: K# ^0 R5 p. | - End If
* K% r) z l0 h/ m+ O - End If
9 Q; v6 F) a, e( n4 v- } - End If
8 K7 j1 _% }6 t - Else
# a. L' |: m2 @# ~- D: H - Exit Sub
& C8 r+ ~7 S/ k - End If. l3 k: |: S W8 @* P
- If R2 < R1 Then
/ ~. I! v6 H$ V& C4 z - .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang, R1), R2 / R1
- y+ l+ m. W9 A& [1 i/ ` - Else
5 A3 T) T$ Z* v; L! C - .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang + .Utility.AngleToReal(90, acDegrees), R2), R1 / R2, k+ A. |+ o: N9 z
- End If
4 k- n4 }% s* d - End With2 u$ V( l7 C- e9 ~) ?
- 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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