COMPUTER GRAPHIC "Membuat Lingkaran Bergerak Ellips Ke Kanan dan Ke Kiri

unit Uellipse2;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    BtUlang: TButton;
    BtExit: TButton;
    eR: TEdit;
    procedure FormCreate(Sender: TObject);
    procedure FormPaint(Sender: TObject);
    procedure BtProsesClick(Sender: TObject);
    procedure BtToyotClick(Sender: TObject);
    procedure BtMercyClick(Sender: TObject);
    procedure BtUlangClick(Sender: TObject);
    procedure BtExitClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  x0,y0 : integer;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  x0 := ClientWidth div 2;
  y0 := ClientHeight div 2;
end;

procedure TForm1.FormPaint(Sender: TObject);
var
  x,y : integer;

begin
  //sumbu x
  for x := 0 to ClientWidth do
    Canvas.Pixels[x,ClientHeight div 2] := clBlue;
  //sumbu y
  for y := 0 to ClientHeight do
    canvas.Pixels[ClientWidth div 2, y] := clRed;

end;