Rotate Bitmap at Angle (High Quality)

var
  Form1: TForm1;
  bmp : TBitmap;
  i : double = 0.00;
  
//

procedure RotateBitmap(Bmp: TBitmap; Rads: Single; AdjustSize: Boolean;
  BkColor: TColor = clNone);
var
  C: Single;
  S: Single;
  XForm: tagXFORM;
  Tmp: TBitmap;
begin
  C := Cos(Rads);
  S := Sin(Rads);
  XForm.eM11 := C;
  XForm.eM12 := S;
  XForm.eM21 := -S;
  XForm.eM22 := C;
  Tmp := TBitmap.Create;
  try
    Tmp.TransparentColor := Bmp.TransparentColor;
    Tmp.TransparentMode := Bmp.TransparentMode;
    Tmp.Transparent := Bmp.Transparent;
    Tmp.Canvas.Brush.Color := BkColor;
    if AdjustSize then
    begin
      Tmp.Width := Round(Bmp.Width * Abs(C) + Bmp.Height * Abs(S));
      Tmp.Height := Round(Bmp.Width * Abs(S) + Bmp.Height * Abs(C));
      XForm.eDx := (Tmp.Width - Bmp.Width * C + Bmp.Height * S) / 2;
      XForm.eDy := (Tmp.Height - Bmp.Width * S - Bmp.Height * C) / 2;
    end
    else
    begin
      Tmp.Width := Bmp.Width;
      Tmp.Height := Bmp.Height;
      XForm.eDx := (Bmp.Width - Bmp.Width * C + Bmp.Height * S) / 2;
      XForm.eDy := (Bmp.Height - Bmp.Width * S - Bmp.Height * C) / 2;
    end;
    SetGraphicsMode(Tmp.Canvas.Handle, GM_ADVANCED);
    SetWorldTransform(Tmp.Canvas.Handle, XForm);
    BitBlt(Tmp.Canvas.Handle, 0, 0, Tmp.Width, Tmp.Height, Bmp.Canvas.Handle,
      0, 0, SRCCOPY);
    Bmp.Assign(Tmp);
  finally
    Tmp.Free;
  end;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  Image2.Picture.Graphic := nil;
  i := i + 0.02;
  try
  bmp := TBitmap.Create;
  bmp.PixelFormat := pf24bit;
  bmp.Assign(Image1.Picture.Bitmap);
  RotateBitmap(bmp, i, false, clNone);
  Image2.Picture.Bitmap.Assign(bmp);
  finally
  bmp.Free;
  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  DoubleBuffered := true;
  bmp := TBitmap.Create;
  bmp.PixelFormat := pf24bit;
  bmp.Assign(Image1.Picture.Bitmap);
  i := 0;
end;