Noise Wave

var curveCount = 50;

​

var t = 0;

var inverted = false;

​

function setup() {

  createCanvas(windowWidth, windowHeight); 

  noFill();

} 

​

function draw() {

  background(inverted ? 0 : 255);

​

  for(j = 0; j < curveCount; j++){

    var c = 255/curveCount*j;

    if(!inverted) c=255-c;

    stroke(c);

    beginShape();

    for(i = 0; i < width; i+=10){

      amp = map(noise(i*0.01,(t+j)*0.01)*2-1+sin(i/width*TWO_PI*3)*sin((t+j)/100),-1,1,-200,200);

      //amp = map(sin(i/width*TWO_PI)*sin((t+j)/100),-1,1,-200,200);

      curveVertex(i,height/2+amp);

    }

    endShape();

  }

​

  t++;

}

​

function keyPressed(){

  if(key=='I'){

    inverted = !inverted;

  }

}