127 строки
2.7 KiB
HTML
127 строки
2.7 KiB
HTML
<html>
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<head>
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<title>Pie Chart</title>
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<script type="text/javascript" src="../../d3.js"></script>
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<style type="text/css">
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body {
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font: 10px sans-serif;
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}
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</style>
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</head>
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<body>
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<script type="text/javascript">
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var w = 400,
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h = 400,
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r = Math.min(w, h) / 2,
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data = normalize(d3.range(10).map(Math.random).sort(descending));
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var colors = [
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"#1f77b4", "#aec7e8", "#ff7f0e", "#ffbb78", "#2ca02c",
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"#98df8a", "#d62728", "#ff9896", "#9467bd", "#c5b0d5",
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"#8c564b", "#c49c94", "#e377c2", "#f7b6d2", "#7f7f7f",
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"#c7c7c7", "#bcbd22", "#dbdb8d", "#17becf", "#9edae5"
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];
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var vis = d3.select("body")
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.append("svg:svg")
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.attr("width", w)
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.attr("height", h);
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var arcs = vis.selectAll("g.arc")
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.data(data)
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.enter("svg:g")
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.attr("class", "arc")
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.attr("transform", "translate(" + r + "," + r + ")");
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var paths = arcs.append("svg:path")
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.attr("fill", index(colors));
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paths.transition()
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.ease("bounce")
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.duration(2000)
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.attrTween("d", tweenPie);
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paths.transition()
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.ease("elastic")
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.delay(function(d, i) { return 2000 + i * 50; })
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.duration(750)
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.attrTween("d", tweenDonut);
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function tweenPie(b) {
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b.innerRadius = 0;
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var i = d3.interpolate({startAngle: 0, endAngle: 0}, b);
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return function(t) {
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return arc(i(t));
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};
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}
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function tweenDonut(b) {
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b.innerRadius = r * .6;
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var i = d3.interpolate({innerRadius: 0}, b);
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return function(t) {
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return arc(i(t));
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};
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}
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function normalize(array) {
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var k = (2 * Math.PI) / array.reduce(function(p, d) { return p + d; }, 0),
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a = 0;
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return array.map(function(d, i) {
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return {
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value: d,
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innerRadius: r * .6,
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outerRadius: r,
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startAngle: a,
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midAngle: a + d * k / 2 - Math.PI / 2,
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endAngle: a += d * k
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};
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});
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}
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function arc(d) {
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var r0 = d.innerRadius,
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r1 = d.outerRadius,
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a0 = d.startAngle - Math.PI / 2,
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a1 = d.endAngle - Math.PI / 2,
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da = a1 - a0,
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c0 = Math.cos(a0),
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s0 = Math.sin(a0),
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c1 = Math.cos(a1),
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s1 = Math.sin(a1);
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return "M" + r1 * c0 + "," + r1 * s0
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+ "A" + r1 + "," + r1 + " 0 "
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+ ((da < Math.PI) ? "0" : "1") + ",1 "
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+ r1 * c1 + "," + r1 * s1
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+ "L" + r0 * c1 + "," + r0 * s1
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+ "A" + r0 + "," + r0 + " 0 "
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+ ((da < Math.PI) ? "0" : "1") + ",0 "
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+ r0 * c0 + "," + r0 * s0 + "Z";
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}
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function index(colors) {
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return function(d, i) {
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return colors[i % colors.length];
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};
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}
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function upright(a) {
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a = a % (2 * Math.PI);
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a = a < 0 ? 2 * Math.PI + a : a;
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return a < Math.PI / 2 || a >= 3 * Math.PI / 2;
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}
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function ascending(a, b) {
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return a < b ? -1 : a > b ? 1 : 0;
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}
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function descending(a, b) {
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return a < b ? 1 : a > b ? -1 : 0;
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}
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</script>
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</body>
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</html>
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