Moiré Patterns

Interactive Moiré pattern implemented in D3. Inspired by Max Ogden.

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

rect {
  fill: none;
  pointer-events: all;
}

circle {
  fill: none;
  stroke: #000;
}

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

var w = 960,
    h = 500;

var svg = d3.select("body").append("svg")
    .attr("width", w)
    .attr("height", h);

svg.append("rect")
    .attr("width", w)
    .attr("height", h);

svg.append("g").selectAll("circle")
    .data(d3.range(110))
  .enter().append("circle")
    .attr("transform", "translate(" + w / 2 + "," + h / 2 + ")")
    .attr("r", function(d) { return d * 5; });

var circle = svg.append("g").selectAll("circle")
    .data(d3.range(60))
  .enter().append("circle")
    .attr("transform", "translate(" + w / 2 + "," + h / 2 + ")")
    .attr("r", function(d) { return d * 3; });

svg.on("mousemove", function() {
  var mouse = d3.mouse(this),
      r = (Math.sqrt(mouse[0]) + 10) / 10;

circle
      .attr("transform", "translate(" + mouse + ")")
      .attr("r", function(d) { return d * r; });
});

</script>

https://d3js.org/d3.v3.min.js