// patch
SndBuf buf[2];
Envelope e[2];
buf[0] => e[0] => dac;
buf[1] => e[1] => dac;

"../220b/hw2/soundfiles/coffee4.wav" => buf[0].read;
"../220b/hw2/soundfiles/coffee4.wav" => buf[1].read;

0.5 => buf[0].rate;
0.5 => buf[1].rate;

// logistic equation
// chaotic for 3.57 < lambda < 4
3.57 => float lambda;
0.1 => float x;
now + 100::second => time later;

1 => int increase;
// counter to switch between buffers
0 => int theBuf;

float lastx;
float diffx;

while( x < 1 && now < later )
{
    x => lastx;
    
    // logistic map
    <<< lambda >>>;
    lambda*(x-Math.pow(x, 2)) => x; 
    
    x - lastx => diffx;
    
    // change some parameters here
    if( theBuf == 0 )
    {
        (x*1) => e[1].time;
        //.12 => e[1].time;
        e[1].keyOff( );
        (x*buf[0].samples( )) $ int => buf[0].pos;
        2.0*diffx => buf[0].rate;
        (x*1) => e[0].time;
        //.12 => e[0].time;
        e[0].keyOn( );
        1 => theBuf;
    } else
    {
        (x*1) => e[0].time;
        //.12 => e[0].time;
        e[0].keyOff( );
        (x*buf[1].samples( )) $ int => buf[1].pos;
        2.0*diffx => buf[1].rate;
        (x*1) => e[1].time;
        //.12 => e[1].time;
        e[1].keyOn( );
        0 => theBuf;
    }
    
    // ramp up
    if( lambda < 4.0 && increase == 1 )
    {
        lambda + 0.001 => lambda;
    }
    // switch
    if( lambda > 3.999999 && increase == 1 )
    {
        0 => increase;
    }
    // ramp down
    if( lambda > 3.57 && increase == 0 )
    {
        lambda - 0.001 => lambda;
    }
    // switch
    if( lambda <= 3.57 && increase == 0 )
    {
        1 => increase;
    }
    
    (x*1000)::ms => now;
    //120::ms => now;
}

50::second => now;