A variation of a polar clock without the lines.
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Polar Clock II.I
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license: gpl-3.0 | |
height: 960 |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
body { | |
background: #222; | |
margin: auto; | |
width: 960px; | |
} | |
.tracks { | |
fill: none; | |
stroke: none; | |
stroke-width: 0px; | |
} | |
.bodies path { | |
stroke: #000; | |
stroke-width: 1.5px; | |
} | |
.bodies .text-path { | |
stroke: none; | |
} | |
.bodies text { | |
fill: #000; | |
font: 500 16px "Helvetica Neue"; | |
} | |
</style> | |
<svg width="960" height="960"></svg> | |
<script src="//d3js.org/d3.v4.0.0-alpha.21.min.js"></script> | |
<script> | |
var svg = d3.select("svg"), | |
width = +svg.attr("width"), | |
height = +svg.attr("height"), | |
radius = Math.min(width, height) / 1.9, | |
bodyRadius = radius / 23, | |
dotRadius = bodyRadius - 8; | |
var pi = Math.PI; | |
var fields = [ | |
{radius: 0.2 * radius, format: d3.timeFormat("%B"), interval: d3.timeYear}, | |
{radius: 0.3 * radius, format: formatDate, interval: d3.timeMonth}, | |
{radius: 0.4 * radius, format: d3.timeFormat("%A"), interval: d3.timeWeek}, | |
{radius: 0.6 * radius, format: d3.timeFormat("%-H hours"), interval: d3.timeDay}, | |
{radius: 0.7 * radius, format: d3.timeFormat("%-M minutes"), interval: d3.timeHour}, | |
{radius: 0.8 * radius, format: d3.timeFormat("%-S seconds"), interval: d3.timeMinute} | |
]; | |
var color = d3.scaleRainbow() | |
.domain([0, 360]); | |
var arcBody = d3.arc() | |
.startAngle(function(d) { return bodyRadius / d.radius; }) | |
.endAngle(function(d) { return -pi - bodyRadius / d.radius; }) | |
.innerRadius(function(d) { return d.radius - bodyRadius; }) | |
.outerRadius(function(d) { return d.radius + bodyRadius; }) | |
.cornerRadius(bodyRadius); | |
var arcTextPath = d3.arc() | |
.startAngle(function(d) { return -bodyRadius / d.radius; }) | |
.endAngle(-pi) | |
.innerRadius(function(d) { return d.radius; }) | |
.outerRadius(function(d) { return d.radius; }); | |
var g = svg.append("g") | |
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"); | |
g.append("g") | |
.attr("class", "tracks") | |
.selectAll("circle") | |
.data(fields) | |
.enter().append("circle") | |
.attr("r", function(d) { return d.radius; }); | |
var body = g.append("g") | |
.attr("class", "bodies") | |
.selectAll("g") | |
.data(fields) | |
.enter().append("g"); | |
body.append("path") | |
.attr("d", function(d) { | |
return arcBody(d) | |
+ "M0," + (dotRadius - d.radius) | |
+ "a" + dotRadius + "," + dotRadius + " 0 0,1 0," + -dotRadius * 2 | |
+ "a" + dotRadius + "," + dotRadius + " 0 0,1 0," + dotRadius * 2; | |
}); | |
body.append("path") | |
.attr("class", "text-path") | |
.attr("id", function(d, i) { return "body-text-path-" + i; }) | |
.attr("d", arcTextPath); | |
var bodyText = body.append("text") | |
.attr("dy", ".35em") | |
.append("textPath") | |
.attr("xlink:href", function(d, i) { return "#body-text-path-" + i; }); | |
tick(); | |
d3.timer(tick); | |
function tick() { | |
var now = Date.now(); | |
fields.forEach(function(d) { | |
var start = d.interval(now), | |
end = d.interval.offset(start, 1); | |
d.angle = Math.round((now - start) / (end - start) * 360 * 100) / 100; | |
}); | |
body | |
.style("fill", function(d) { return color(d.angle); }) | |
.attr("transform", function(d) { return "rotate(" + d.angle + ")"; }); | |
bodyText | |
.attr("startOffset", function(d, i) { return d.angle <= 90 || d.angle > 270 ? "100%" : "0%"; }) | |
.attr("text-anchor", function(d, i) { return d.angle <= 90 || d.angle > 270 ? "end" : "start"; }) | |
.text(function(d) { return d.format(now); }); | |
} | |
function formatDate(d) { | |
d = new Date(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; | |
} | |
</script> |
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