Uses graphabc;
var
i: integer;
begin
window.Init(0, 0, 800, 600, clwhite);
window.IsFixedSize := true;
pen.Color := clMediumVioletRed;
pen.Width := 4;
lockdrawing;
for i := 1 to 150 do
begin
if(i=2)then sleep(100);
circle(400, 600 - (i * 4), 80);
redraw;
window.Clear;
end;
end.