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Arc Clock
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .path--background { | |
| fill: none; | |
| stroke: #000; | |
| stroke-width: 2px; | |
| } | |
| .label { | |
| font: 24px sans-serif; | |
| text-anchor: middle; | |
| } | |
| </style> | |
| <body> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| var fields = [ | |
| {value: 24, size: 24, label: "h", update: function(date) { return date.getHours(); }}, | |
| {value: 60, size: 60, label: "m", update: function(date) { return date.getMinutes(); }}, | |
| {value: 60, size: 60, label: "s", update: function(date) { return date.getSeconds(); }} | |
| ]; | |
| var arc = d3.svg.arc() | |
| .innerRadius(width / 6.5 - 60) | |
| .outerRadius(width / 6.5 - 5) | |
| .startAngle(0) | |
| .endAngle(function(d) { return (d.value / d.size) * 2 * Math.PI; }); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var field = svg.selectAll(".field") | |
| .data(fields) | |
| .enter().append("g") | |
| .attr("transform", function(d, i) { return "translate(" + (i * 2 + 1.25) / 6.5 * width + "," + height / 2 + ")"; }) | |
| .attr("class", "field"); | |
| field.append("path") | |
| .attr("class", "path path--background") | |
| .attr("d", arc); | |
| var path = field.append("path") | |
| .attr("class", "path path--foreground"); | |
| var label = field.append("text") | |
| .attr("class", "label") | |
| .attr("dy", ".35em"); | |
| (function update() { | |
| var now = new Date(); | |
| field | |
| .each(function(d) { d.previous = d.value, d.value = d.update(now); }); | |
| path.transition() | |
| .ease("elastic") | |
| .duration(750) | |
| .attrTween("d", arcTween); | |
| label | |
| .text(function(d) { return d.value + d.label; }); | |
| setTimeout(update, 1000 - (now % 1000)); | |
| })(); | |
| function arcTween(b) { | |
| var i = d3.interpolate({value: b.previous}, b); | |
| return function(t) { | |
| return arc(i(t)); | |
| }; | |
| } | |
| </script> |
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