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d3 fractal tree
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<!DOCTYPE html> | |
<meta charset='utf-8'> | |
<style> | |
.button { | |
padding: 5px; | |
color: #000; | |
position: absolute; | |
left: 0; | |
top: 0; | |
font: 20px sans-serif; | |
} | |
.disable{ | |
pointer-events: none; | |
opacity: 0.5; | |
} | |
.viz{ | |
width: 960px; | |
height: 500px; | |
} | |
</style> | |
<body> | |
<div class='viz'></div> | |
<button class='button' id='grow'>Click me!</button> | |
<script src='https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js'></script> | |
<script src='https://code.jquery.com/jquery-1.11.3.min.js'></script> | |
<script> | |
var colors = ['#743720','#874D37','#826B42','#90A369','#ABBF83']; | |
var colorrange = d3.scale.linear().domain([1,3,5,7,9]).range(colors); | |
var margin = {top: 20, right: 10, bottom: 20, left: 10}; | |
var vizWidth = $('.viz').width(); | |
var width = vizWidth - margin.left - margin.right, | |
height = 500 - margin.top - margin.bottom; | |
var svg = d3.select('.viz').append('svg') | |
.attr('width', width + margin.left + margin.right) | |
.attr('height', height + margin.top + margin.bottom) | |
.append('g') | |
.attr('transform', 'translate(' + (width/2 - 40) + ',' + (height - 100) + ')') | |
.attr('class', 'rect-1'); | |
var squareSide = 100; | |
var data = [{w: squareSide, h: squareSide, tx: 0, ty: 0, r: 0}]; | |
//add the first square | |
var rects = svg.selectAll('rect') | |
.data(data) | |
.enter() | |
.append('rect') | |
.attr('x', 0) | |
.attr('y', 0) | |
.attr('height', function(d) {return d.w}) | |
.attr('width', function(d) {return d.h}) | |
.attr('transform', function(d) { return 'rotate(' + d.r + ') translate(' + d.tx + ',' + d.ty + ')'}) | |
.attr('fill', colorrange(1)); | |
var rectIndex = 1; | |
var addSquares = function(){ | |
var data = d3.selectAll('.rect-' + rectIndex + ' rect').data(); | |
var rectColor = colorrange(rectIndex + 1); | |
data.forEach(function(rectangle){ | |
var s0 = rectangle; | |
var s1 = {}; | |
var s2 = {}; | |
s1.w = s0.w/(Math.sqrt(2)); | |
s1.h = s0.h/(Math.sqrt(2)); | |
s1.tx = -(s0.h/2); | |
s1.ty = -(s0.h/2); | |
s1.r = -45; | |
s2.w = s1.w; | |
s2.h = s1.h; | |
s2.tx = s0.h; | |
s2.ty = -s0.h; | |
s2.r = 45; | |
var newData = []; | |
newData.push(s1, s2); | |
var rectGroup = d3.selectAll('.rect-' + rectIndex).selectAll('g') | |
.data(newData) | |
.enter() | |
.append('g') | |
.attr('class', 'rect-' + (rectIndex + 1)) | |
.attr('transform', function(d) { return 'translate(' + d.tx + ',' + d.ty + ') rotate(' + d.r + ')';}) | |
.append('rect') | |
.attr('x', 0) | |
.attr('y', 0) | |
.attr('height', function(d) {return d.w}) | |
.attr('width', function(d) {return d.h}) | |
.attr('fill', rectColor); | |
}) | |
rectIndex ++; | |
} | |
$('#grow').click(function() { | |
if (rectIndex <= 9) { | |
addSquares(); | |
} else { | |
$('#grow').addClass('disable'); | |
} | |
}); | |
</script> | |
</body> | |
</html> |
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