Noisy pathways.

*/

​

//Store x,y coordinates for current position

let x, y;

//Store x,y coordinates for previous position

let px, py;

//Store time position in noise graph

let t;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

​

  // Start in the middle

  x = width/2;

  y = height/2;

  px = x;

  py = y;

  t = 0;

​

  noStroke();

  background(0);

}

​

function draw() {

  // Move in time along noise graph.

  t += 0.01;

​

  //Move

    x += 2*(noise(t)-0.5);

  // Why t+100?

  // What happens if you get rid of the 100?

    y += 2*(noise(t+100)-0.5);

​

  // Draw a line from the previous loc to this loc

  stroke(255);

  line(px, py, x, y);

​

  // Remember current location for next frame

  px = x;

  py = y;

}