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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()
6 ]" Q( l* M( o; X [. G! [/ t - Dim P0(2) As Double, P1 As Variant, P2 As Variant, P3 As Variant, P4 As Variant
- `1 k- C r1 V" d - Dim X1 As Double, Y1 As Double, X2 As Double, Y2 As Double, X3 As Double, Y3 As Double* {6 j$ K) j \) Y% I4 [! t
- Dim A As Double, B As Double, C As Double, F As Double, Ang As Double, R1 As Double, R2 As Double* g0 D3 @; s8 ]# ?# G. [5 K2 e# [
- On Error GoTo 10
5 a4 s5 o/ s7 S+ g" W - With ThisDrawing2 Z P7 o% c* ~2 T [. O" [
- P1 = .Utility.GetPoint(, "指定中心点")
( H/ ?4 T/ i7 m# z2 {" b9 C1 D - P2 = .Utility.GetPoint(, "指定第一点")
9 l- S+ D# J- F" ]; O; a% o - P3 = .Utility.GetPoint(, "指定第二点")
* D ]2 |4 _5 Z1 M5 K% G9 a) N4 N8 U - P4 = .Utility.GetPoint(, "指定第三点")9 g& n! o4 W) x# Q7 v
- X1 = P2(0) - P1(0)
- E: b8 v5 f, T$ |8 A* M8 `$ J - Y1 = P2(1) - P1(1) {% \( a/ b. `) ?
- X2 = P3(0) - P1(0)" C! k4 H: _: I/ O! l
- Y2 = P3(1) - P1(1)
3 l4 O3 _* x A E2 |* C - X3 = P4(0) - P1(0)8 O) f% j0 Z* v- o! t
- Y3 = P4(1) - P1(1)% p' {7 M% }$ h- {# L7 t9 h8 H
- A = (X1 * Y1 - X2 * Y2) * (Y1 ^ 2 - Y3 ^ 2) - (X1 * Y1 - X3 * Y3) * (Y1 ^ 2 - Y2 ^ 2)" B: p0 M2 K" T- {' l% [
- If A <> 0 Then
) Q' i) R x2 W6 } - B = ((X1 ^ 2 - X2 ^ 2) * (X1 * Y1 - X3 * Y3) - (X1 ^ 2 - X3 ^ 2) * (X1 * Y1 - X2 * Y2)) / A
7 g ?0 P7 m1 i+ S; d - C = ((X1 ^ 2 - X3 ^ 2) * (Y1 ^ 2 - Y2 ^ 2) - (X1 ^ 2 - X2 ^ 2) * (Y1 ^ 2 - Y3 ^ 2)) / A
. G1 D8 F9 Y4 i! g - F = -X1 ^ 2 - B * Y1 ^ 2 - C * X1 * Y17 T' K# [: P) S3 T3 A
- If C = 0 Then* X4 _" N( C1 i5 _: k! c
- If B > 0 And F < 0 Then
- D8 @5 H" Z% z) l - Ang = 07 ~ O" L" E U
- R1 = Sqr(-F)
9 W' g" p/ h8 G# C7 f, P - R2 = Sqr(-F / B)# D/ a( Z' D* n- L! S5 s' P
- Else$ U1 ?' M" h. s# L& {. l+ ]: }
- Exit Sub; ]5 U L& L9 _0 ?, H
- End If" b9 D2 N) N5 _
- Else
9 g8 N& F0 N1 B' h# N0 W - If B = 1 Then
- q7 _, l0 F" |2 U1 | - If F < 0 And C > -2 And C < 2 Then) b" G+ ~5 y5 ~1 t4 Y$ a
- Ang = .Utility.AngleToReal(45, acDegrees)
9 w$ ~0 x4 y$ f - R1 = Sqr(-2 * F / (2 + C))2 [- \7 l! F7 v6 @" A3 q' o% }- q
- R2 = Sqr(-2 * F / (2 - C))
& @' K$ u7 ^+ G - Else
& ]8 n* A5 i# V" M0 O3 a - Exit Sub" Q' ^8 f2 O7 J+ W
- End If
& R: y7 n9 Q0 \* i0 D8 m \ - Else
F4 a, V* t3 E5 { - Ang = Atn(C / (1 - B)) / 2
2 X$ H2 y# i' L9 m+ v1 Z* C - If Ang < 0 Then Ang = Ang + .Utility.AngleToReal(90, acDegrees); g3 a, j$ ]1 T( \, G1 z
- If B > -1 And F < 0 And C > -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) And C < (B + Tan(Ang) ^ 2) / Tan(Ang) Or _0 b- w U0 ^* T5 t5 a: ~6 n
- B < -1 And F > 0 And C > (B + Tan(Ang) ^ 2) / Tan(Ang) And C < -(1 + B * Tan(Ang) ^ 2) / Tan(Ang) Then
: J# ]. e2 C! ~; j! X+ ^ - R2 = -F * (1 + Tan(Ang) ^ 2)! o" H5 [1 h% E* Y/ B: v/ [8 e
- R1 = Sqr(R2 / (1 + B * Tan(Ang) ^ 2 + C * Tan(Ang)))
+ D( H; L% m, R" j |4 C - R2 = Sqr(R2 / (B + Tan(Ang) ^ 2 - C * Tan(Ang)))
. b: x% o- b8 {: a1 V Y - Else
, l4 j- a0 G6 U' p- ^ - Exit Sub
f; L% E9 b' G9 H" Y+ R - End If
" G; @; H [( S# h1 h; y - End If$ I' P% @7 Z7 U8 u+ Z( ]3 @; \
- End If: l2 c8 R; A" U: O' G5 r
- Else7 D$ M/ B/ l# c$ D
- Exit Sub8 {+ y7 G. p# y9 ?. _( Y
- End If
! @- k* c# X. B+ s - If R2 < R1 Then
! g% V. q6 p0 h9 U - .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang, R1), R2 / R1
8 \' k2 D& s: A' n8 ^ - Else7 Y* n% r( H7 \4 p
- .ModelSpace.AddEllipse P1, .Utility.PolarPoint(P0, Ang + .Utility.AngleToReal(90, acDegrees), R2), R1 / R26 @3 n- Q0 o+ I+ j* o
- End If
! `0 B: U" j. K* d2 V7 _6 K4 k3 E - End With
/ [' ?: p) C0 C7 W; |; W8 L - 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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