Program Cykloida;
uses graph,crt;
var karta,tryb,n,i:integer;
begin
  karta:=detect; initGraph(karta,tryb,'');
  line(0,301,639,301);
  for i:=0 to 160 do
  begin
    setColor(white);
    fillEllipse(round(60*cos(1.9+i/19)+60+4*i),round(60*sin(1.9+i/19)+240),2,2);
    line(60+4*i,240,round(60*cos(1.9+i/19)+60+4*i),round(60*sin(1.9+i/19)+240));
    for n:=0 to 5 do
      begin
        setColor(n+1);
        arc(60+4*i,240,n*60-3*i,(n+1)*60-3*i,60);
      end;
    delay(100);
    setColor(black);
    circle(60+4*i,240,60);
    line(60+4*i,240,round(60*cos(1.9+i/19)+60+4*i),round(60*sin(1.9+i/19)+240));
  end;
  readln; closeGraph;
end.