OLG Seifhennersdorf/fächerverbindender Unterricht-Pi/Julia

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<language>Pascal</language>
<code id="4d2a0bf79cc25">
var Pie:String;
    key:integer;
    dauer:integer;
    c:Char; k:Char;
    i,posx,z:Integer;
</code>
<canvas w=800 h=100></canvas>
<run id="4aa4b46b6775d">
canvas_clear();
Pie :=  '3.141592653589793238462643383279502884197169399375105820974944592307816406286208998' ;

selectSound(19); // 19. MIDI organ
posx:=0;
z:=2*((length(Pie)-2) div 2);
for i := 3 to z+1 do begin
if i mod 2 = 1 then begin
  c := Pie[i];
  k := Pie[i+1];

if c='0' then key :=72;
if c='1' then key :=70;
if c='2' then key :=60;
if c='3' then key :=61;
if c='4' then key :=67;
if c='5' then key :=63;
if c='6' then key :=64;
if c='7' then key :=61;
if c='8' then key :=60;
if c='9' then key :=65;


if (k='0') or (k='1') or (k='2') then dauer:=100 div 2;
if (k='3') or (k='4') then dauer:=100 div 8;
if (k='5') or (k='6') or (k='7') then dauer:=100 div 1;
if (k='8') or (k='9') then dauer:=100 div 4;

  
  
canvas_fillRect(posx,80-(key-60)*4,dauer,10);           
  posx := posx + dauer+5;
  sound_play(key,dauer*10);
end; 
end;
</run>