Архив всех лаб (delphi) / 9.11 / Unit1

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Buttons, ExtCtrls, ComCtrls, Math, TeeProcs, TeEngine,
Chart, ClipBrd, Series, biblio;

type
kord=array[1..4] of integer;
TForm1 = class(TForm)
Image1: TImage;
Edit1: TEdit;
Edit2: TEdit;
Label1: TLabel;
Label2: TLabel;
Label3: TLabel;
Label4: TLabel;
Label5: TLabel;
Label6: TLabel;
Label7: TLabel;
Label8: TLabel;
Edit3: TEdit;
Edit4: TEdit;
Edit5: TEdit;
Edit6: TEdit;
Edit7: TEdit;
Edit8: TEdit;
BitBtn1: TBitBtn;
Button1: TButton;
Label9: TLabel;
PageControl1: TPageControl;
TabSheet1: TTabSheet;
TabSheet2: TTabSheet;
Chart1: TChart;
Series1: TLineSeries;
Series2: TLineSeries;
Edit9: TEdit;
Edit10: TEdit;
Edit11: TEdit;
Label10: TLabel;
Label11: TLabel;
Edit12: TEdit;
Label12: TLabel;
Button2: TButton;
BitBtn2: TBitBtn;
function masshtab:extended;
procedure KordCh;
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure Button2Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;
x:kord;
y:kord;
k:array[1..6] of extended;
p:array[1..3] of boolean;
i,j:integer;

implementation

{$R *.dfm}

function max1(a:kord):integer;
begin
result:=a[1];
for i:=2 to 4 do if a[i]>result then result:=a[i];
end;

function min1(a:kord):integer;
begin
result:=a[1];
for i:=2 to 4 do if a[i]<result then result:=a[i];
end;

function TForm1.masshtab:extended;
var a,b:extended;
begin
a:=(2*image1.Height)/(3*(max1(y)-min1(y)));
b:=(2*image1.Width)/(3*(max1(x)-min1(x)));
result:=min(a,b);
end;

procedure TForm1.KordCh;
var m:extended;
a,b:integer;
begin
m:=masshtab;
a:=min1(x);
b:=min1(y);
for i:=1 to 4 do
begin
x[i]:=round((x[i]-a)*m+image1.Width/6);
y[i]:=round(image1.height*(5/6)-(y[i]-b)*m);
end;
end;

function dlina:boolean;
var d:array[1..6] of extended;
begin
d[1]:=sqrt(sqr(x[1]-x[2])+sqr(y[1]-y[2]));
d[4]:=sqrt(sqr(x[1]-x[4])+sqr(y[1]-y[4]));
d[2]:=sqrt(sqr(x[2]-x[3])+sqr(y[2]-y[3]));
d[3]:=sqrt(sqr(x[3]-x[4])+sqr(y[3]-y[4]));
if (d[1]=d[2]) and (d[1]=d[3]) and (d[1]=d[4]) then
result:=true else result:=false;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
Edit1.Text:='1';
Edit2.Text:='1';
Edit3.Text:='2';
Edit4.Text:='3';
Edit5.Text:='4';
Edit6.Text:='4';
Edit7.Text:='5';
Edit8.Text:='2';
Edit9.Text:='0,2';
Edit10.Text:='1';
Edit11.Text:='10';
Edit12.Text:='0,001';
Label9.Caption:='';
Image1.Canvas.Pen.Color:=clred;
Image1.Canvas.Pen.width:=3;
end;

procedure TForm1.Button1Click(Sender: TObject);
var t:integer;
begin
image1.Canvas.FillRect(image1.ClientRect);
x[1]:=strtoint(Edit1.Text);
y[1]:=strtoint(Edit2.Text);
x[2]:=strtoint(Edit3.Text);
y[2]:=strtoint(Edit4.Text);
x[3]:=strtoint(Edit5.Text);
y[3]:=strtoint(Edit6.Text);
x[4]:=strtoint(Edit7.Text);
y[4]:=strtoint(Edit8.Text);
if x[1]=x[2] then k[1]:=1E-8 else
k[1]:=(y[1]-y[2])/(x[1]-x[2]);
if x[1]=x[4] then k[4]:=1E-8 else
k[4]:=(y[1]-y[4])/(x[1]-x[4]);
if x[3]=x[2] then k[2]:=1E-8 else
k[2]:=(y[2]-y[3])/(x[2]-x[3]);
if x[3]=x[4] then k[3]:=1E-8 else
k[3]:=(y[3]-y[4])/(x[3]-x[4]);

if (k[1]<>k[3]) and (k[2]<>k[4]) then
Label9.Caption:='Четырехугольник';

if ((k[1]=k[3]) and (k[2]<>k[4])) or ((k[1]<>k[3]) and (k[2]=k[4])) then
Label9.Caption:='Трапеция';

if (k[1]=k[3]) and (k[2]=k[4]) then
begin
if not dlina then
Label9.Caption:='Трапеция'
else
if (k[2]=0) and (k[1]=1e-8) then
Label9.Caption:='Квадрат'
else
if k[1]=-1/k[2] then
Label9.Caption:='Квадрат'
else
Label9.Caption:='Ромб';
end;
KordCh;
Image1.Canvas.Polygon([point(x[1],y[1]),point(x[2],y[2]),point(x[3],y[3]),point(x[4],y[4])]);
end;

procedure TForm1.Button2Click(Sender: TObject);
var M,a,b,h,ax,s,eps:extended;
begin
series1.Clear;
series2.Clear;
a:=StrToFloat(Edit9.text);
b:=StrToFloat(Edit10.text);
M:=StrToFloat(Edit11.text);
eps:=StrToFloat(Edit12.text);
h:=(b-a)/m;
ax:=a;
repeat
sum(ax,eps,s);
series1.AddXY(ax,s,'',clred);
series2.AddXY(ax,yf(ax),'',clgreen);
ax:=ax+h;
until ax>b+1e-9;
end;

end.