mandelbrot_v2

_.md

[ Launch: mandelbrot ] 7095549 by jshumakerpruitt

config.json

{"description":"mandelbrot_v2","endpoint":"","display":"svg","public":true,"require":[],"fileconfigs":{"inlet.js":{"default":true,"vim":false,"emacs":false,"fontSize":12},"_.md":{"default":true,"vim":false,"emacs":false,"fontSize":12},"config.json":{"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,"inline-console":true,"thumbnail":"http://i.imgur.com/4qlheg0.gif","ajax-caching":true}

inlet.js

var svg = d3.select("svg");

var data = []
var makeData = function(n){
  var temp = []
  var x = -2.5;
  var y = -1;
  for(var i = 0; i < Math.round(n*7/4); i++){
    for(var j = 0; j < n; j++){
      data.push({x: x + 3.5*i/(n*7/4),  y: y + 2*j/n});
    }
  }
};
//makeData(70);
makeData(70);
//console.log(data);
var colors = d3.scale.linear().range(["#005CFF", "#FF0014"])
//var colors = d3.scale.category20();

var pickColor = function(x0,y0){
  var x = 0;
  var y = 0;
  var count = 0;
  var max_iter = 1000;
  while((x*x + y*y < 4) && count < max_iter){
    xtemp = x*x - y*y + x0;
    y = 2*x*y+y0;
    x = xtemp;
    count++;
  }
  return colors(count/1000);
}


svg.selectAll("circle")
.data(data)
.enter()
.append("circle")
.attr({
  cx: function(d) {return 140*d.x + 423},
  cy: function(d) {return 140*d.y + 300},
  r: 1.9008,
  fill: function(d,i){return pickColor(d.x, d.y)}
})