Swirl example for Delphi

procedure TForm1.SwirlClick(Sender: TObject);
var
   ptCenter: TPoint;
begin
   ptCenter.x:= Trunc(LEADImage1.BitmapWidth /2);
   ptCenter.y:= Trunc(LEADImage1.BitmapHeight /2);

   LEADImage1.Swirl( 180, ptCenter );
end;