Spoke Clock 1 by aubergene

index.html

<!DOCTYPE html>
<html>
<head>
	<title>Spoke Clock 1</title>
</head>
<body>

<svg class="clock spokes-01"></svg>

<style type="text/css">
	body {
		margin: 0;
	}

	.spokes-01 {
		background: #fff;
		width: 100vw;
		height: 100vh;
	}

	.spokes-01 * {
		stroke: #ddd;
		transition: all 1s;
	}

	.spokes-01 .active {
		stroke: #000;
	}

	.spokes-01 .hour {
		stroke-width: 6px;
	}

	.spokes-01 .hour.active {
		stroke-width: 8px;
	}

	.spokes-01 .minute  {
		stroke-width: 4px;
	}

	.spokes-01 .minute.active {
		stroke-width: 6px;
	}

	.spokes-01 .second  {
		stroke-width: 2px;
	}

	.spokes-01 .second.active {
		stroke-width: 4px;
	}

</style>

<script src="https://d3js.org/d3.v4.min.js"></script>
<script type="text/javascript">
	(function() {
		'use strict'

		var size = 1000
		var radius = size / 2

		var tau = Math.PI * 2

		var svg = d3.select('.spokes-01')
			.attr('viewBox', [0, 0, size, size])

		svg = svg.append('g')
				.attr('transform', 'translate(' + [size/2, size/2] + ')')

		var line = d3.radialLine()

		var hours = svg.selectAll('.hour')
			.data(d3.range(12).map(function(d) {
				var a = (tau / 12) * d
				return [[a, radius * 0.2], [a, radius * 0.4]]
			}))
			.enter()
			.append('path')
			.attr('class', 'hour')
			.attr('d', line)

		var minutes = svg.selectAll('.minute')
			.data(d3.range(60).map(function(d) {
				var a = (tau / 60) * d
				return [[a, radius * 0.4], [a, radius * 0.6]]
			}))
			.enter()
			.append('path')
			.attr('class', 'minute')
			.attr('d', line)

		var seconds = svg.selectAll('.second')
			.data(d3.range(60).map(function(d) {
				var a = (tau / 60) * d
				return [[a, radius * 0.6], [a, radius * 0.8]]
			}))
			.enter()
			.append('path')
			.attr('class', 'second')
			.attr('d', line)

		function render(date) {
			seconds.classed('active', function(d, i) {
				return i === date.getSeconds()
			})

			minutes.classed('active', function(d, i) {
				return i === date.getMinutes()
			})

			hours.classed('active', function(d, i) {
				return i === date.getHours() % 12
			})
		}

		function tick() {
			var now = new Date()
			d3.timeout(tick, 1000 - now % 1000)
			render(now)
		}

		tick()

	})()
</script>
</body>
</html>