Keskustelu: Koodit: Pascal: Kivoja Kolmioita Delphillä

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var alkurandom: integer;
var x,y: integer;
var leveys,korkeus: integer;
begin
leveys := 600;
korkeus := 500;
randomize;

for alkurandom := 1 to leveys do begin
 if random(2) = 0 then
  canvas.pixels[alkurandom,1] := clWhite
 else
  canvas.pixels[alkurandom,1] := clBlack;
end;

for y := 2 to korkeus do begin
 for x := 1 to leveys do begin

  if ((canvas.pixels[x-1,y-1] = clBlack) and (canvas.pixels[x,y-1] = clBlack) and (canvas.pixels[x+1,y-1] = clBlack))
  or ((canvas.pixels[x-1,y-1] = clWhite) and (canvas.pixels[x,y-1] = clWhite) and (canvas.pixels[x+1,y-1] = clWhite)) then
   canvas.pixels[x,y] := clWhite //jos kaikki kolme takana ovat samanvärisiä, valkea

  else if (canvas.pixels[x-1,y-1] = clBlack) and (canvas.pixels[x,y-1] = clWhite) and (canvas.pixels[x+1,y-1] = clWhite) then
   canvas.pixels[x,y] := clWhite  //takana ja takavasemmalla valkea, muualla musta

  else
   canvas.pixels[x,y] := clBlack; //muuten musta
  end;
 end;
end;
end.