var y = 0.1;

var z = 0.1;

​

var sigma = 10;

var rho = 28;

var beta = 8/3;

​

var points = [];

var clrs = [];

var clr = 255;

var up = false;

var gate = false;

​

function setup() {

  createCanvas(windowWidth, windowHeight, WEBGL);

  background(0);

}

​

function mousePressed(){

  background(0);

  rotate(1);

  //camera(10,0,10);

  drawLorenz();

}

​

function drawLorenz(){

  scale(3);

  //stroke(255);

  noFill();

  var hue = 150;

​

  //beginShape();

  for(var i = 0; i < points.length; i++){

    let v = points[i];

    let w = points[i+1];

    stroke(255,clrs[i],0);

    if(points.length > 2 && v !== points[points.length-1]){

      line(v.x,v.y,v.z,w.x,w.y,w.z);

    }

    //vertex(v.x,v.y,v.z);

  }

  //endShape();

}

​

function draw() {

  if(!gate){

    var dt = 0.001;

​

    var dx = (sigma * (y - x)) * dt;

    var dy = (x * (rho - z) - y) * dt;

    var dz = (x * y - beta * z) * dt;

​

    x = x + dx;

    y = y + dy;

    z = z + dz;

​

    points.push(createVector(x,y,z));

​

    if(up){

      clr += 0.8;

    } else{

      clr -= 0.8;

    }

    append(clrs,clr);

    if(clr > 255){

      up = false;  

    } else if(clr < 50){

      up = true;

    }

  } 

}