This unusual clock in polar coordinates is based on a Flash screensaver by pixelbreaker. See also the earlier Protovis version.
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
body { | |
background: #222; | |
font: 10px sans-serif; | |
margin: auto; | |
position: relative; | |
width: 960px; | |
} | |
text { | |
text-anchor: middle; | |
} | |
#credit { | |
position: absolute; | |
right: 4px; | |
bottom: 4px; | |
color: #ddd; | |
} | |
#credit a { | |
color: #fff; | |
font-weight: bold; | |
} | |
</style> | |
<div id="credit">Inspired by <a href="http://blog.pixelbreaker.com/polarclock/">pixelbreaker</a>.</div> | |
<script src="http://d3js.org/d3.v3.js"></script> | |
<script> | |
var width = 960, | |
height = 800, | |
radius = Math.min(width, height) / 1.9, | |
spacing = .09; | |
var formatSecond = d3.time.format("%S s"), | |
formatMinute = d3.time.format("%M m"), | |
formatHour = d3.time.format("%H h"), | |
formatDay = d3.time.format("%a"), | |
formatDate = d3.time.format("%d d"), | |
formatMonth = d3.time.format("%b"); | |
var color = d3.scale.linear() | |
.range(["hsl(-180,50%,50%)", "hsl(180,50%,50%)"]) | |
.interpolate(interpolateHsl); | |
var arc = 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; }); | |
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"); | |
field.append("text"); | |
d3.transition().duration(0).each(tick); | |
d3.select(self.frameElement).style("height", height + "px"); | |
function tick() { | |
field = field | |
.each(function(d) { this._value = d.value; }) | |
.data(fields) | |
.each(function(d) { d.previousValue = this._value; }); | |
field.select("path") | |
.transition() | |
.ease("elastic") | |
.attrTween("d", arcTween) | |
.style("fill", function(d) { return color(d.value); }); | |
field.select("text") | |
.attr("dy", function(d) { return d.value < .5 ? "-.5em" : "1em"; }) | |
.text(function(d) { return d.text; }) | |
.transition() | |
.ease("elastic") | |
.attr("transform", function(d) { | |
return "rotate(" + 360 * d.value + ")" | |
+ "translate(0," + -(d.index + spacing / 2) * radius + ")" | |
+ "rotate(" + (d.value < .5 ? -90 : 90) + ")" | |
}); | |
setTimeout(tick, 1000 - Date.now() % 1000); | |
} | |
function arcTween(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} | |
]; | |
} | |
// Avoid shortest-path interpolation. | |
function interpolateHsl(a, b) { | |
var i = d3.interpolateString(a, b); | |
return function(t) { | |
return d3.hsl(i(t)); | |
}; | |
} | |
</script> |
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