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@tomgp

tomgp/LICENSE.txt

Last active May 29, 2019
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Simple D3 clock

A simple clock made with D3.

After I'd made it I got a bit caught up in trying to make it look like Dieter Ram's Braun clock face adding a whole bunch fo extra stuff...

It's still not quite there.

<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
background: #fff;
}
svg{
stroke: #000;
font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;
}
#rim {
fill: none;
stroke: #999;
stroke-width: 3px;
}
.second-hand{
stroke-width:3;
}
.minute-hand{
stroke-width:8;
stroke-linecap:round;
}
.hour-hand{
stroke-width:12;
stroke-linecap:round;
}
.hands-cover{
stroke-width:3;
fill:#fff;
}
.second-tick{
stroke-width:3;
fill:#000;
}
.hour-tick{
stroke-width:8; //same as the miute hand
}
.second-label{
font-size: 12px;
}
.hour-label{
font-size: 24px;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var radians = 0.0174532925,
clockRadius = 200,
margin = 50,
width = (clockRadius+margin)*2,
height = (clockRadius+margin)*2,
hourHandLength = 2*clockRadius/3,
minuteHandLength = clockRadius,
secondHandLength = clockRadius-12,
secondHandBalance = 30,
secondTickStart = clockRadius;
secondTickLength = -10,
hourTickStart = clockRadius,
hourTickLength = -18
secondLabelRadius = clockRadius + 16;
secondLabelYOffset = 5
hourLabelRadius = clockRadius - 40
hourLabelYOffset = 7;
var hourScale = d3.scale.linear()
.range([0,330])
.domain([0,11]);
var minuteScale = secondScale = d3.scale.linear()
.range([0,354])
.domain([0,59]);
var handData = [
{
type:'hour',
value:0,
length:-hourHandLength,
scale:hourScale
},
{
type:'minute',
value:0,
length:-minuteHandLength,
scale:minuteScale
},
{
type:'second',
value:0,
length:-secondHandLength,
scale:secondScale,
balance:secondHandBalance
}
];
function drawClock(){ //create all the clock elements
updateData(); //draw them in the correct starting position
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
var face = svg.append('g')
.attr('id','clock-face')
.attr('transform','translate(' + (clockRadius + margin) + ',' + (clockRadius + margin) + ')');
//add marks for seconds
face.selectAll('.second-tick')
.data(d3.range(0,60)).enter()
.append('line')
.attr('class', 'second-tick')
.attr('x1',0)
.attr('x2',0)
.attr('y1',secondTickStart)
.attr('y2',secondTickStart + secondTickLength)
.attr('transform',function(d){
return 'rotate(' + secondScale(d) + ')';
});
//and labels
face.selectAll('.second-label')
.data(d3.range(5,61,5))
.enter()
.append('text')
.attr('class', 'second-label')
.attr('text-anchor','middle')
.attr('x',function(d){
return secondLabelRadius*Math.sin(secondScale(d)*radians);
})
.attr('y',function(d){
return -secondLabelRadius*Math.cos(secondScale(d)*radians) + secondLabelYOffset;
})
.text(function(d){
return d;
});
//... and hours
face.selectAll('.hour-tick')
.data(d3.range(0,12)).enter()
.append('line')
.attr('class', 'hour-tick')
.attr('x1',0)
.attr('x2',0)
.attr('y1',hourTickStart)
.attr('y2',hourTickStart + hourTickLength)
.attr('transform',function(d){
return 'rotate(' + hourScale(d) + ')';
});
face.selectAll('.hour-label')
.data(d3.range(3,13,3))
.enter()
.append('text')
.attr('class', 'hour-label')
.attr('text-anchor','middle')
.attr('x',function(d){
return hourLabelRadius*Math.sin(hourScale(d)*radians);
})
.attr('y',function(d){
return -hourLabelRadius*Math.cos(hourScale(d)*radians) + hourLabelYOffset;
})
.text(function(d){
return d;
});
var hands = face.append('g').attr('id','clock-hands');
face.append('g').attr('id','face-overlay')
.append('circle').attr('class','hands-cover')
.attr('x',0)
.attr('y',0)
.attr('r',clockRadius/20);
hands.selectAll('line')
.data(handData)
.enter()
.append('line')
.attr('class', function(d){
return d.type + '-hand';
})
.attr('x1',0)
.attr('y1',function(d){
return d.balance ? d.balance : 0;
})
.attr('x2',0)
.attr('y2',function(d){
return d.length;
})
.attr('transform',function(d){
return 'rotate('+ d.scale(d.value) +')';
});
}
function moveHands(){
d3.select('#clock-hands').selectAll('line')
.data(handData)
.transition()
.attr('transform',function(d){
return 'rotate('+ d.scale(d.value) +')';
});
}
function updateData(){
var t = new Date();
handData[0].value = (t.getHours() % 12) + t.getMinutes()/60 ;
handData[1].value = t.getMinutes();
handData[2].value = t.getSeconds();
}
drawClock();
setInterval(function(){
updateData();
moveHands();
}, 1000);
d3.select(self.frameElement).style("height", height + "px");
</script>
ISC License (ISC)
Copyright 2019 Tom Pearson
Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
@blech

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@blech blech commented Nov 1, 2013

Thanks for this: it was a fantastic foundation for my DST transition visualisation.

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