This unusual clock in polar coordinates is based on a Flash screensaver by pixelbreaker. See also the earlier Protovis version, and two newer variations.
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Polar Clock
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| license: gpl-3.0 |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| background: #222; | |
| margin: auto; | |
| width: 960px; | |
| } | |
| .arc-text { | |
| font: 16px sans-serif; | |
| } | |
| .arc-center { | |
| fill: none; | |
| } | |
| #credit { | |
| position: absolute; | |
| font: 10px sans-serif; | |
| right: 10px; | |
| bottom: 10px; | |
| color: #ddd; | |
| } | |
| #credit a { | |
| color: inherit; | |
| } | |
| </style> | |
| <div id="credit">Inspired by <a href="http://blog.pixelbreaker.com/polarclock/">pixelbreaker</a>.</div> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 800, | |
| radius = Math.min(width, height) / 1.9, | |
| spacing = .09; | |
| var formatSecond = d3.time.format("%-S seconds"), | |
| formatMinute = d3.time.format("%-M minutes"), | |
| formatHour = d3.time.format("%-H hours"), | |
| formatDay = d3.time.format("%A"), | |
| formatDate = function(d) { d = d.getDate(); switch (10 <= d && d <= 19 ? 10 : d % 10) { case 1: d += "st"; break; case 2: d += "nd"; break; case 3: d += "rd"; break; default: d += "th"; break; } return d; }, | |
| formatMonth = d3.time.format("%B"); | |
| var color = d3.scale.linear() | |
| .range(["hsl(-180,60%,50%)", "hsl(180,60%,50%)"]) | |
| .interpolate(function(a, b) { var i = d3.interpolateString(a, b); return function(t) { return d3.hsl(i(t)); }; }); | |
| var arcBody = d3.svg.arc() | |
| .startAngle(0) | |
| .endAngle(function(d) { return d.value * 2 * Math.PI; }) | |
| .innerRadius(function(d) { return d.index * radius; }) | |
| .outerRadius(function(d) { return (d.index + spacing) * radius; }) | |
| .cornerRadius(6); | |
| var arcCenter = d3.svg.arc() | |
| .startAngle(0) | |
| .endAngle(function(d) { return d.value * 2 * Math.PI; }) | |
| .innerRadius(function(d) { return (d.index + spacing / 2) * radius; }) | |
| .outerRadius(function(d) { return (d.index + spacing / 2) * radius; }); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append("g") | |
| .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"); | |
| var field = svg.selectAll("g") | |
| .data(fields) | |
| .enter().append("g"); | |
| field.append("path") | |
| .attr("class", "arc-body"); | |
| field.append("path") | |
| .attr("id", function(d, i) { return "arc-center-" + i; }) | |
| .attr("class", "arc-center"); | |
| field.append("text") | |
| .attr("dy", ".35em") | |
| .attr("dx", ".75em") | |
| .style("text-anchor", "start") | |
| .append("textPath") | |
| .attr("startOffset", "50%") | |
| .attr("class", "arc-text") | |
| .attr("xlink:href", function(d, i) { return "#arc-center-" + i; }); | |
| tick(); | |
| d3.select(self.frameElement).style("height", height + "px"); | |
| function tick() { | |
| if (!document.hidden) field | |
| .each(function(d) { this._value = d.value; }) | |
| .data(fields) | |
| .each(function(d) { d.previousValue = this._value; }) | |
| .transition() | |
| .ease("elastic") | |
| .duration(500) | |
| .each(fieldTransition); | |
| setTimeout(tick, 1000 - Date.now() % 1000); | |
| } | |
| function fieldTransition() { | |
| var field = d3.select(this).transition(); | |
| field.select(".arc-body") | |
| .attrTween("d", arcTween(arcBody)) | |
| .style("fill", function(d) { return color(d.value); }); | |
| field.select(".arc-center") | |
| .attrTween("d", arcTween(arcCenter)); | |
| field.select(".arc-text") | |
| .text(function(d) { return d.text; }); | |
| } | |
| function arcTween(arc) { | |
| return function(d) { | |
| var i = d3.interpolateNumber(d.previousValue, d.value); | |
| return function(t) { | |
| d.value = i(t); | |
| return arc(d); | |
| }; | |
| }; | |
| } | |
| function fields() { | |
| var now = new Date; | |
| return [ | |
| {index: .7, text: formatSecond(now), value: now.getSeconds() / 60}, | |
| {index: .6, text: formatMinute(now), value: now.getMinutes() / 60}, | |
| {index: .5, text: formatHour(now), value: now.getHours() / 24}, | |
| {index: .3, text: formatDay(now), value: now.getDay() / 7}, | |
| {index: .2, text: formatDate(now), value: (now.getDate() - 1) / (32 - new Date(now.getYear(), now.getMonth(), 32).getDate())}, | |
| {index: .1, text: formatMonth(now), value: now.getMonth() / 12} | |
| ]; | |
| } | |
| </script> |
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