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@mbostock
Last active October 23, 2019 22:17
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Arc Clock
license: gpl-3.0
<!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>
@reshma21menon
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reshma21menon commented Jan 23, 2018

Sir, can we embed all the three circles into one circle? Like one inside the other. My teacher asked me to do like this.

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