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jwilber/.block

Last active October 8, 2018 06:17
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force-directed distribution
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.block
license: mit
Raw
index.html
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<script src="https://d3js.org/d3.v4.min.js"></script>
<style>
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; background-color:black; }
svg { background-color: black;}
</style>
</head>
<body>
<script>
const width = 1000
const height = 500
const svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append('g')
.attr('transform', 'translate()')
const colorScale = d3.scaleOrdinal()
.range(['#FCFCFC', 'coral', '#FFFAE3', '#99E1D9', 'skyblue'])
const radius = 7
const sampleData = d3.range(600).map(() => ({r: radius,
value: width/2 + d3.randomNormal(0,2.8)() * 50}))
// define force
let force = d3.forceSimulation()
.force('collision', d3.forceCollide(d => d.r+1).strength(1))
.force('x', d3.forceX(d => d.value).strength(3))
.force('y', d3.forceY(height - radius).strength(0.05))
.nodes(sampleData)
.on('tick', changeNetwork)
svg.selectAll('circle')
.data(sampleData)
.enter()
.append('circle')
.style('fill', (d,i) => colorScale(i))
.attr('r', d => d.r)
.attr('stroke', 'white')
.attr('stroke-width', .1)
function changeNetwork() {
d3.selectAll('circle')
.attr('cx', d => d.x)
.attr('cy', d => d.y = Math.min(d.y, height - radius - 1))
}
</script>
</body>
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