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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：
9 w" [4 \7 R, ~! P; t% e
$ Y: S# \& P& R: Z0 NSub A() '本程序以20圆的圆心为坐标原点
8 l) }! R+ D1 q" g, o9 Y( L* R Dim Y As Double '左上方小圆圆心纵坐标2 k2 e4 p) I" T& {
Dim Y1 As Double, Y2 As Double, B As Double, B1 As Double '迭代运算中间变量$ g- n9 r' G. C/ o" x# V
Dim R As Double '小圆半径: K- Y5 ~$ n0 q. a
Dim O(2) As Double '坐标原点
% b0 C* v" U0 Z( t! x* t Dim O1(2) As Double '左上方小圆圆心) F; L6 G8 f6 E7 y- Z+ m8 g$ N K0 p
Dim O2(2) As Double '右上方小圆圆心
4 c' ~4 W( v9 G/ G+ T7 | Dim O3(2) As Double '右下方小圆圆心4 u) k. S! a) Q) S
Dim P1(2) As Double, P2(2) As Double, P3(2) As Double '直线起端点3 L5 Y0 V# t3 U2 J
Y1 = 10 '迭代运算边界条件
/ H; ?8 Q/ ~# f& [ Y2 = 20
8 B5 e+ ?* Q6 _2 t: [2 y1 B" m2 F: g Do '计算合适的小圆圆心纵坐标
1 g7 p0 U. t( Z% C% D" m/ i' {3 R/ i Y = (Y1 + Y2) / 2* ^3 H" K3 o3 ]& q: L
B = -(2 + Sqr(2)) * Y ^ 4 - 40 * Sqr(2) * Y ^ 3 + 1600 * Y ^ 2 - 16000 * Sqr(2) * Y + 320000 + 160000 * Sqr(2)7 k# R h3 k6 p' B6 {8 a( p s3 N
If B = 0 Then
' e" e; Y( r3 k% a Exit Do
8 e# M. @5 Y, a$ Z ElseIf Y = Y1 Then: u3 S3 {' g H8 b
B1 = -(2 + Sqr(2)) * Y2 ^ 4 - 40 * Sqr(2) * Y2 ^ 3 + 1600 * Y2 ^ 2 - 16000 * Sqr(2) * Y2 + 320000 + 160000 * Sqr(2)) D( }' S( l7 R @1 | q, Z X
If Abs(B1) < Abs(B) Then Y = Y2
' d0 s' C7 N+ [ Exit Do
, E! }% g' ?( Q# [2 v2 j" C ElseIf Y = Y2 Then' z- Q# `5 r9 H% u2 p8 \! z
B1 = -(2 + Sqr(2)) * Y1 ^ 4 - 40 * Sqr(2) * Y1 ^ 3 + 1600 * Y1 ^ 2 - 16000 * Sqr(2) * Y1 + 320000 + 160000 * Sqr(2)
2 y! x0 c* B. Z If Abs(B1) < Abs(B) Then Y = Y1
* O0 X, P% E- ^; `! ~ Exit Do0 i: F+ M- g- \4 D& M" w
ElseIf B > 0 Then0 m: B- U6 d4 ^1 X1 z
Y1 = Y+ n, O( p* k' _) Q9 V
Else( H$ f! |% T1 ?, }' m0 y# h; O/ v
Y2 = Y. d7 p5 F7 ]( v4 I( R1 z+ G
End If9 K. Q- u" [1 z( B& K9 u9 L
Loop
% C' C# b$ _+ t6 f% k R = Y ^ 2 / 40 '小圆半径
* G! Y3 [$ s, Y" D" ]3 G, A O1(0) = R - 10: Q) O1 I" S' p8 _. q* L V2 c" F
O1(1) = Y '各点赋值
8 F# Y; X- L! V% D/ u6 P O2(0) = Sqr(0.5) * (10 + R)
. E% s8 `8 C% |+ N! k O2(1) = O2(0)
- i- R8 @: F5 W' p O3(0) = O1(1)& R/ j! }& m3 f' C, t
O3(1) = O1(0)/ g6 B0 x, l/ @8 X7 [
P1(0) = -10
5 S/ k! P" _( R4 Y P1(1) = -10
! v. h2 r& o+ s0 Z& V% Z1 M0 C P2(0) = -10
) V' p$ E$ I; ~$ W5 w6 Z P2(1) = 20 O5 d5 P: E* [9 s/ @
P3(0) = 20) h: P8 N& P c( l9 {* C# `- k
P3(1) = -10
( H& `. s8 {) U0 B& w2 \ With ThisDrawing
6 X5 I$ `* a9 J! i3 `' X1 f .ModelSpace.AddLine P1, P2 '画直线
1 v; \( i9 \6 ~4 v" i1 S .ModelSpace.AddLine P1, P3; L) O+ ~7 ?* M+ f4 Y6 s) ?# S
.ModelSpace.AddCircle O, 10 '画大圆+ E$ J. s% u# P+ u0 x
.ModelSpace.AddCircle O1, R '画三个小圆
% X8 k# e |* Q2 |# |# ?3 M .ModelSpace.AddCircle O2, R! }& e* t8 e+ n& [- v
.ModelSpace.AddCircle O3, R, A3 I+ M" g5 Y+ O6 E4 c
End With: O* p4 \8 S# R9 L$ ~8 V$ r' {
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