/*
    Working with waves based on sine and cosine can create predictable (single wave)
    or somewhat unpredictable (adding waves) results, but to create a truly unexpected
    result we can tap into Perlin Noise to create a wave from. In this example we've
    modified our Wave class to create PerlinWave, which will generate a wave based
    upon Perlin Noise.
*/

// Our wave object
PerlinWave w;

void setup() {

    // setup the environment
    size(500, 250);
    colorMode(RGB, 255, 255, 255, 100);
    
    // The PerlinWave needs four things:
    //  100     -> the amplitude of the wave
    //  15      -> the spacing of the wave samples
    //  width   -> width of the wave
    //  300     -> period of the wave
    w = new PerlinWave(100, 15, width, 300);
}

void draw() {

    // clear the background
    background(0);
    
    // recalcuate the waveform
    w.calcWave();
    
    // start drawing from the vertical center of our screen
    translate(0, height / 2);
    
    // draw the wave to screen
    w.render();
}