tinkerbell

_.md

[ Launch: tinkerbell ] e881ac86e0b636984bdf by zellyn

config.json

{"description":"tinkerbell","endpoint":"","display":"svg","public":true,"require":[],"fileconfigs":{"inlet.js":{"default":true,"vim":false,"emacs":false,"fontSize":12},"config.json":{"default":true,"vim":false,"emacs":false,"fontSize":12},"_.md":{"default":true,"vim":false,"emacs":false,"fontSize":12}},"fullscreen":false,"play":false,"loop":false,"restart":false,"autoinit":true,"pause":true,"loop_type":"pingpong","bv":false,"nclones":15,"clone_opacity":0.4,"duration":3000,"ease":"linear","dt":0.01,"ajax-caching":true,"thumbnail":"http://i.imgur.com/7qOj72z.png"}

inlet.js

// http://en.wikipedia.org/wiki/Tinkerbell_map

var svg = d3.select("svg");
var data = [];
var iterations = 20000;

var xscale = d3.scale.linear().domain([-1.3, 0.5]).range([0, tributary.sw]);
var yscale = d3.scale.linear().domain([-1.6, 0.6]).range([tributary.sh, 0]);

var x = -0.72, y = -0.64;

var a = 0.9, b = -0.6013, c = 2.0, d = 0.5;
for (var i = 0; i < iterations; i++) {
  var oldX = x;
  x = Math.pow(x,2) - Math.pow(y,2) + a*x + b*y;
  y = 2*oldX*y + c*oldX + d*y;
  data.push({ x: x, y: y});
}

svg.selectAll("circle")
    .data(data)
    .enter()
	.append("circle")
    .attr("cx", function(d) { return xscale(d.x); })
    .attr("cy", function(d) { return yscale(d.y); })
    .attr("r", 1.5)
    .attr("fill", "darkblue")
    .attr("opacity", 0.3);