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@pstuffa
Last active March 29, 2016 22:27
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OMG Superformula
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
margin: 0;
background: #222;
min-width: 960px;
}
rect {
fill: none;
pointer-events: all;
}
.small {
fill: steelblue;
fill-opacity: .5;
stroke: white;
}
.small:hover {
fill: white;
fill: lightsteelblue;
}
.big {
stroke: #666;
stroke-width: 2;
fill: none;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://d3js.org/d3.superformula.v0.min.js"></script>
<script>
var width = Math.max(1200, innerWidth),
height = Math.max(600, innerHeight);
var i = 0;
var x = d3.scale.ordinal()
.domain(d3.superformulaTypes)
.rangePoints([0, 960], 1);
var small = d3.superformula()
.type(function(d) { return d; })
.size(960);
var big = d3.superformula()
.size(300)
.type("square")
.segments(360);
var huge = d3.superformula()
.size(30000)
.type("square")
.segments(360);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
svg.append("rect")
.attr("width", width)
.attr("height", height)
.on("ontouchstart" in document ? "touchmove" : "mousemove", particle);
svg.selectAll("a")
.data(d3.superformulaTypes)
.enter().append("a")
.attr("xlink:title", String)
.attr("transform", function(d, i) { return "translate(" + x(d) + ",40)"; })
.append("path")
.attr("class", "small")
.attr("d", small)
.on("click", function(d) { d3.select(".big").attr("d", big.type(d)); })
.on("click", function(d) { d3.select(".huge").attr("d", huge.type(d)); });
function particle() {
var m = d3.mouse(this);
svg.insert("path","rect")
.attr("class", "big")
.attr("d", big)
.style("stroke", d3.hsl((i = (i + 1) % 360), 1, .5))
.style("stroke-opacity", 1)
.attr("transform", function(d, i) { return "translate("+ m[0] + "," + m[1] + ")"; })
.transition()
.duration(1000)
.ease(Math.sqrt)
.attr("d", huge)
.style("fill-opacity", 1e-6)
.style("stroke-opacity", 1e-6)
.remove();
d3.event.preventDefault();
}
</script>
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