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发表于 2007-3-9 14:41:30
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来自： 中国辽宁营口
用VBA画图方法
VBA源代码：
/ E( e+ \) V' z5 [+ z/ V - C; @/ J! t% Q
Sub A() '本程序以20圆的圆心为坐标原点- h2 ?3 Z; ?9 N! D$ Y& ~( n
Dim Y As Double '左上方小圆圆心纵坐标
* N8 \- ?6 ` `' F: Q) X% J Dim Y1 As Double, Y2 As Double, B As Double, B1 As Double '迭代运算中间变量
; H7 V5 L' W0 b Dim R As Double '小圆半径! `8 m; d# v+ V
Dim O(2) As Double '坐标原点
& c, \) z' ]0 b$ A Dim O1(2) As Double '左上方小圆圆心
% I0 u5 x3 t" @' I6 o) U Dim O2(2) As Double '右上方小圆圆心$ k+ s3 }2 F! s! m6 x( r
Dim O3(2) As Double '右下方小圆圆心
: {3 Z) F0 M. D( b* { Dim P1(2) As Double, P2(2) As Double, P3(2) As Double '直线起端点
3 p/ r3 J- ~$ ^6 [9 N+ Q Y1 = 10 '迭代运算边界条件
6 s3 v1 @; N) y Y2 = 20
^% J, s s5 r: O+ l4 k# Q. w+ J8 H Do '计算合适的小圆圆心纵坐标2 k, K4 A, ?2 ^3 ^* L) Y& l
Y = (Y1 + Y2) / 24 `6 t' F$ V" H5 Z, k$ |6 |+ G
B = -(2 + Sqr(2)) * Y ^ 4 - 40 * Sqr(2) * Y ^ 3 + 1600 * Y ^ 2 - 16000 * Sqr(2) * Y + 320000 + 160000 * Sqr(2)
# E/ Q( H8 { i# K If B = 0 Then
& }1 t' ~8 L1 y* d X4 X7 R Exit Do6 c% w2 \# g, Q$ V7 w) u5 g! t* a& P
ElseIf Y = Y1 Then
8 |, t K3 D) t( i! [9 U/ V B1 = -(2 + Sqr(2)) * Y2 ^ 4 - 40 * Sqr(2) * Y2 ^ 3 + 1600 * Y2 ^ 2 - 16000 * Sqr(2) * Y2 + 320000 + 160000 * Sqr(2)% ~+ V- c! i# f- p! M
If Abs(B1) < Abs(B) Then Y = Y2
% c9 ~" a2 c6 p; A4 ~3 x2 T Exit Do/ u/ F4 R( G$ ]: t9 H
ElseIf Y = Y2 Then4 A/ v, o; o" t) W6 x# ]( j: D5 D
B1 = -(2 + Sqr(2)) * Y1 ^ 4 - 40 * Sqr(2) * Y1 ^ 3 + 1600 * Y1 ^ 2 - 16000 * Sqr(2) * Y1 + 320000 + 160000 * Sqr(2)
, e. F. e$ u; e$ c1 v/ Z/ S6 O) q If Abs(B1) < Abs(B) Then Y = Y1' t1 O- j8 V4 G
Exit Do: T; i6 `4 W8 T
ElseIf B > 0 Then
, ], z- T) G3 s9 I: H Y1 = Y
$ E# F6 O; V3 o4 v) m+ q Else+ U1 j: g% }6 ?- f6 N6 s( }
Y2 = Y
3 q, m% |, s$ E End If
) C, l, W+ [/ R1 f/ J s) i3 G Loop, l2 [) U6 E; h1 n) Q2 D4 a+ l& G
R = Y ^ 2 / 40 '小圆半径) P0 t `9 \, Z0 o% G* A( } H+ _
O1(0) = R - 10
S _ n9 R9 l! _ O1(1) = Y '各点赋值: Y. e' k8 I! l6 Q9 J/ P
O2(0) = Sqr(0.5) * (10 + R)/ b+ @( E; I5 }: ?6 z/ X
O2(1) = O2(0)
- Z+ |/ ^- c# X0 ^ O3(0) = O1(1)$ k. [+ Q( A6 V! m8 E& b) a7 K
O3(1) = O1(0)& k. I# Q9 e$ C! ?0 c, c6 m
P1(0) = -10
1 b# |. B3 K8 I0 E P1(1) = -10
7 o( _* R4 X% O; z P2(0) = -10
/ z7 L* u/ E8 f' J$ d+ o5 t% Q P2(1) = 201 M0 i' O5 [. T7 U% e* H0 {
P3(0) = 20
; | M; z. D# M; K1 a# T! o; k P3(1) = -10: m b1 s+ ]# ^$ |: {( `2 {9 H
With ThisDrawing
* f" ]) H' u' Z1 j .ModelSpace.AddLine P1, P2 '画直线9 m& I! j5 |% _3 Y! @! L9 A
.ModelSpace.AddLine P1, P3
, M+ m1 ` L. M- P% Q- F& r C .ModelSpace.AddCircle O, 10 '画大圆
2 d+ C: Z, C9 ?$ r .ModelSpace.AddCircle O1, R '画三个小圆# p, _/ j$ h% G3 a- \) q
.ModelSpace.AddCircle O2, R% ^8 t0 }, C* a% ]! D* }
.ModelSpace.AddCircle O3, R
$ R( y. J. ]. O- y2 Z5 X9 @: A End With* R$ w) {& B: V" F
End Sub |
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发表于 2007-3-9 09:43:24
发表于 2007-3-9 12:21:41
楼主
都好厉害，我没想到的都给想到了／
:L