tmcw · December 14, 2012 05:55
diff --git a/index.html b/index.html
 <!DOCTYPE html>
 <meta charset="utf-8">
 <title></title>
 <style>

 body {
  background:#000;
  font: 10px sans-serif;
  width:960px;
  margin:0 auto;
 }

 .axis path,
 .axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
 }

 .area {
  fill: black;
 }

 .line {
  stroke-width:2;
  stroke:#eee;
 }

 </style>
 <body>
 <script src="http://d3js.org/d3.v3.js"></script>
 <script>

 var margin = {top: 20, right: 20, bottom: 30, left: 50},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

 var x = d3.time.scale()
    .domain([0, 1])
    .range([0, width]);

 var y = d3.scale.linear()
    .domain([0, 1])
    .range([height, 0]);

 var area = d3.svg.area()
    .x(function(d) { return x(d.x); })
    .y0(height)
    .y1(function(d) { return y(d.y); })
    .interpolate('basis');

 var line = d3.svg.line()
    .x(function(d) { return x(d.x); })
    .y(function(d) { return y(d.y); })
    .interpolate('basis');

 var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

 var data = d3.range(0, 18).map(function(y) {
    return d3.range(0, 40).map(function(x) {
        return {
            x: x / 40,
            y0: y / 20,
            y: (y / 20) + Math.sin(x / (Math.PI * 4)) * (Math.random() / 10)
        };
    });
 }).reverse();

 function draw(data) {

    var wave = svg.selectAll('g.wave')
        .data(data)
        .enter()
        .append('g')
        .attr('class', 'wave');

    wave.append('path')
        .attr("class", "area")
        .attr("d", area);

    svg.selectAll('path.area').transition().duration(100).attr("d", area);

    wave.append('path')
        .attr("class", "line");

    svg.selectAll('path.line').transition().duration(1000).attr("d", line);

 }

 window.setInterval(function() {
    for (var y = 0; y < data.length; y++) {
        for (var x = 0; x < data[y].length; x++) {
            data[y][x].y = Math.min(
                data[y][x].y0 + 0.09,
                Math.max(
                    data[y][x].y0 - 0.09, data[y][x].y + (Math.random() - 0.5) * Math.sin(x / (Math.PI * 4)) * 0.02));
        }
    }
    draw(data);
 }, 1000);

 draw(data);

 </script>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<title></title>
	<style>

	body {
	background:#000;
	font: 10px sans-serif;
	width:960px;
	margin:0 auto;
	}

	.axis path,
	.axis line {
	fill: none;
	stroke: #000;
	shape-rendering: crispEdges;
	}

	.area {
	fill: black;
	}

	.line {
	stroke-width:2;
	stroke:#eee;
	}

	</style>
	<body>
	<script src="http://d3js.org/d3.v3.js"></script>
	<script>

	var margin = {top: 20, right: 20, bottom: 30, left: 50},
	width = 960 - margin.left - margin.right,
	height = 500 - margin.top - margin.bottom;

	var x = d3.time.scale()
	.domain([0, 1])
	.range([0, width]);

	var y = d3.scale.linear()
	.domain([0, 1])
	.range([height, 0]);

	var area = d3.svg.area()
	.x(function(d) { return x(d.x); })
	.y0(height)
	.y1(function(d) { return y(d.y); })
	.interpolate('basis');

	var line = d3.svg.line()
	.x(function(d) { return x(d.x); })
	.y(function(d) { return y(d.y); })
	.interpolate('basis');

	var svg = d3.select("body").append("svg")
	.attr("width", width + margin.left + margin.right)
	.attr("height", height + margin.top + margin.bottom)
	.append("g")
	.attr("transform", "translate(" + margin.left + "," + margin.top + ")");

	var data = d3.range(0, 18).map(function(y) {
	return d3.range(0, 40).map(function(x) {
	return {
	x: x / 40,
	y0: y / 20,
	y: (y / 20) + Math.sin(x / (Math.PI * 4)) * (Math.random() / 10)
	};
	});
	}).reverse();

	function draw(data) {

	var wave = svg.selectAll('g.wave')
	.data(data)
	.enter()
	.append('g')
	.attr('class', 'wave');

	wave.append('path')
	.attr("class", "area")
	.attr("d", area);

	svg.selectAll('path.area').transition().duration(100).attr("d", area);

	wave.append('path')
	.attr("class", "line");

	svg.selectAll('path.line').transition().duration(1000).attr("d", line);

	}

	window.setInterval(function() {
	for (var y = 0; y < data.length; y++) {
	for (var x = 0; x < data[y].length; x++) {
	data[y][x].y = Math.min(
	data[y][x].y0 + 0.09,
	Math.max(
	data[y][x].y0 - 0.09, data[y][x].y + (Math.random() - 0.5) * Math.sin(x / (Math.PI * 4)) * 0.02));
	}
	}
	draw(data);
	}, 1000);

	draw(data);

	</script>