// Daniel Shiffman

// http://natureofcode.com

​

// Koch Curve

// Renders a simple fractal, the Koch snowflake

// Each recursive level drawn in sequence

​

var lines = [];   // A list to keep track of all the lines

​

function setup() {

  createCanvas(383, 200);

  var start = createVector(0, 150);

  var end   = createVector(width, 150);

  lines.push(new KochLine(start, end));

  for (var i = 0; i < 5; i++) {

    generate();

  }

}

​

function draw() {

  background(51);

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

    var l = lines[i];

    l.display();

  }

}

​

function generate() {

  var next = [];    // Create emtpy list

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

    var l = lines[i];

    // Calculate 5 koch p5.Vectors (done for us by the line object)

    var a = l.kochA();                 

    var b = l.kochB();

    var c = l.kochC();

    var d = l.kochD();

    var e = l.kochE();

    // Make line segments between all the p5.Vectors and add them

    next.push(new KochLine(a, b));

    next.push(new KochLine(b, c));

    next.push(new KochLine(c, d));

    next.push(new KochLine(d, e));

  }

  lines = next;

}