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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：$ \' \% ~- l( q& [
' u: L- b0 R$ ISub A() '本程序以20圆的圆心为坐标原点' ]; N5 A+ t2 _. p/ N8 g
Dim Y As Double '左上方小圆圆心纵坐标! u& H D( G4 G$ i3 r+ Z) O
Dim Y1 As Double, Y2 As Double, B As Double, B1 As Double '迭代运算中间变量
/ t- b9 z5 ]* ^* ]* P Dim R As Double '小圆半径
; e, u7 ]& x) c$ r+ @ Dim O(2) As Double '坐标原点) b2 j: |9 A% B* x1 ]1 u& V
Dim O1(2) As Double '左上方小圆圆心# ]: Y \/ B, }1 w' \2 y" n+ Q
Dim O2(2) As Double '右上方小圆圆心' j2 g' a- b# [
Dim O3(2) As Double '右下方小圆圆心. [+ T. i' W% Q3 W2 m7 H" Y
Dim P1(2) As Double, P2(2) As Double, P3(2) As Double '直线起端点
3 f3 t! p& c& |0 Q4 X Y1 = 10 '迭代运算边界条件! k; k2 x) k2 _0 q
Y2 = 20
6 k' ?+ h0 [2 r4 U Do '计算合适的小圆圆心纵坐标
9 e+ p- f" _ \. p9 P, Q$ s: A Y = (Y1 + Y2) / 2
) y3 p% j+ a: {$ v2 j7 J7 w: o) K B = -(2 + Sqr(2)) * Y ^ 4 - 40 * Sqr(2) * Y ^ 3 + 1600 * Y ^ 2 - 16000 * Sqr(2) * Y + 320000 + 160000 * Sqr(2)
% E8 O* Z( ]; z If B = 0 Then
7 n2 S3 o, f. I! J$ O1 Q! A$ J Exit Do c) [) f- ]% `2 O) i9 C8 ?+ a! o
ElseIf Y = Y1 Then
9 v1 n, I7 L# L; I" S B1 = -(2 + Sqr(2)) * Y2 ^ 4 - 40 * Sqr(2) * Y2 ^ 3 + 1600 * Y2 ^ 2 - 16000 * Sqr(2) * Y2 + 320000 + 160000 * Sqr(2)) o6 @% |& W& R, e* L" u3 m
If Abs(B1) < Abs(B) Then Y = Y2
: v2 M; Q0 b9 i6 R7 ]6 m. r8 L Exit Do! Y, F& b: n, \% F" J- [# q
ElseIf Y = Y2 Then
) u3 k3 W9 l/ h. b6 p" c Z B1 = -(2 + Sqr(2)) * Y1 ^ 4 - 40 * Sqr(2) * Y1 ^ 3 + 1600 * Y1 ^ 2 - 16000 * Sqr(2) * Y1 + 320000 + 160000 * Sqr(2)- s9 {$ E; a9 S- U
If Abs(B1) < Abs(B) Then Y = Y1
. \2 S& }3 G% G' d/ L- s Exit Do
9 D- r2 C8 z; K( l' C8 u ElseIf B > 0 Then0 Y4 A7 {+ }6 K, h$ D
Y1 = Y
& p/ h5 w: m1 F Else
: ^* I2 p: z9 W Y2 = Y' h9 k$ r, d& ~1 h6 h
End If
; [' x m" t. M( \. ?& e9 p& U Loop
# `8 x' ~% W/ V% |5 a% ?& {& u R = Y ^ 2 / 40 '小圆半径- q& ~" Q( o8 Z) ~
O1(0) = R - 10
- U3 Y6 T d$ B' f) y: a/ r O1(1) = Y '各点赋值; y3 e# l" o; [ [2 ?1 E
O2(0) = Sqr(0.5) * (10 + R); P# o2 R9 G/ K1 ^; }3 e- F
O2(1) = O2(0)1 i; G6 a* a. B. I* O2 @+ z6 w
O3(0) = O1(1)! P {( H6 Z, O6 X* l1 L( H& y
O3(1) = O1(0)
$ K$ a7 L- \2 D P1(0) = -10$ k: R* b, Y9 A3 ^+ H- q8 w6 z8 x* r
P1(1) = -106 G0 \' V" ]! _ \5 B
P2(0) = -10
+ Z+ Y0 H$ u) a* N/ Y4 l5 f P2(1) = 20
8 @2 N: \% {3 O; ^% } P3(0) = 20
) S& Z( P8 }6 U, h* ~ P3(1) = -100 M6 y/ S9 M4 c# z g- o+ I
With ThisDrawing- Q# j* S2 o6 S7 I1 N/ E" L
.ModelSpace.AddLine P1, P2 '画直线* T, j; ?3 a4 I& W* D( F- @5 c( Q4 \
.ModelSpace.AddLine P1, P3
5 X% T: B+ G( Y& [4 j- D .ModelSpace.AddCircle O, 10 '画大圆; r- |! v4 Q0 g, J# ^1 S* @
.ModelSpace.AddCircle O1, R '画三个小圆
! Z9 H& X n2 |: V# [2 | .ModelSpace.AddCircle O2, R& K ?8 n# A2 p/ T4 B. B
.ModelSpace.AddCircle O3, R
, {" [" O0 y' v+ t# p2 d End With. Q, R7 `6 Q7 l- V/ ^) c" V
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