procedure Timer1OnInterval(sender : TObject);
var tmpPercentDone: string;
begin
  NextStep;
    Writeln('Current step: ' + IntToStr(CurrentStep) + '/' + IntToStr(TotalSteps));

  PercentDone:= Trunc3((CurrentStep div TotalSteps) * 100, 2);
    Writeln(FloatToStr(PercentDone) + '% done');
  
  if(Shape1.Width >= BarSize) then
    Shape1.Width:= BarSize;
    
  Shape1.Width:= ((CurrentStep div TotalSteps) * BarSize);
    Writeln('Shape drawn: ' + IntToStr(Shape1.Width) + '/' + IntToStr(BarSize));
    
  if(Shape1.Width >= BarSize) then
    Shape1.Width:= BarSize;
    
  Label1.Caption:= FloatToStr(PercentDone) + '%';
  
  if(Label1.Caption = '100%')then
  begin
    Timer1.Free;
    Label1.Left:= Label1.Left - 3;
  end;
end;