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| license: mit |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <svg width="960" height="500"> | |
| <filter id="goo"> | |
| <feGaussianBlur in="SourceGraphic" stdDeviation="20" result="blur" /> | |
| <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 18 -7" result="goo" /> | |
| <feBlend in="SourceGraphic" in2="goo" /> | |
| </filter> | |
| </svg> | |
| <style> | |
| html, body { | |
| padding: 0; | |
| margin: 0; | |
| overflow: hidden; | |
| } | |
| </style> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var svg = d3.select('svg'), | |
| width = +svg.attr('width'), | |
| height = +svg.attr('height'); | |
| /****************************************************************************** | |
| * Colors | |
| * https://github.com/Jam3/nice-color-palettes | |
| */ | |
| var colors = ['#000000', '#547980', '#45ada8', '#9de0ad', '#e5fcc2']; | |
| /****************************************************************************** | |
| * Vars | |
| */ | |
| var DURATION = 7500; | |
| var PAD = 2000; | |
| var HEADER_SHIFT = 0; | |
| var ROTATION = 30; | |
| var dt = 0, | |
| tInit = performance.now(); | |
| /****************************************************************************** | |
| * Layers | |
| */ | |
| var bgLayer = svg.append('g'); | |
| var gooLayer = svg.append('g') | |
| .style('filter', 'url(#goo)') | |
| .style('z-index', 1); | |
| /****************************************************************************** | |
| * Bars | |
| */ | |
| var i = 0, | |
| barWidth = 100, | |
| numBars = Math.ceil((width + PAD) / barWidth), | |
| bars = Array.apply(null, new Array(numBars)).map(() => ({index: i++})); | |
| var elevatedBars = []; | |
| bars = bars.filter((d) => { | |
| if (d.index % colors.length === 0) { | |
| elevatedBars.push(d); | |
| return false; | |
| } | |
| return true; | |
| }); | |
| var barSelection = bgLayer | |
| .append('g') | |
| .attr('transform', `translate(0,0), rotate(${ROTATION})`); | |
| var elevatedBarSelection = gooLayer | |
| .append('g') | |
| .attr('transform', `translate(0,0), rotate(${ROTATION})`); | |
| [[bars, barSelection], [elevatedBars, elevatedBarSelection]] | |
| .forEach((pair) => { | |
| pair[1].selectAll('rect') | |
| .data(pair[0]) | |
| .enter().append('rect') | |
| .attr('x', (d) => d.index * 100 - PAD / 2) | |
| .attr('y', -PAD) | |
| .attr('width', barWidth) | |
| .attr('height', height + PAD) | |
| .attr('fill', (d) => colors[d.index % colors.length]); | |
| }); | |
| /****************************************************************************** | |
| * Circles | |
| */ | |
| i = 1; | |
| var numCircles = 3, | |
| circleRadius = 60, | |
| circles = Array.apply(null, new Array(numCircles)) | |
| .map(() => ({x: i++ * width / (numCircles + 1)})); | |
| var circleSelection = gooLayer.append('g'); | |
| circleSelection.selectAll('circle') | |
| .data(circles) | |
| .enter().append('circle') | |
| .attr('cx', (d) => d.x) | |
| .attr('cy', height / 2 + HEADER_SHIFT) | |
| .attr('r', circleRadius) | |
| .attr('fill', colors[0]); | |
| /****************************************************************************** | |
| * Animation | |
| */ | |
| requestAnimationFrame(animate); | |
| function animate () { | |
| requestAnimationFrame(animate); | |
| dt = (performance.now() - tInit) % DURATION / DURATION; | |
| var shift = dt * 1000; | |
| [barSelection, elevatedBarSelection].forEach((layer) => { | |
| layer.attr('transform', `translate(0,${shift}), rotate(${ROTATION})`); | |
| }); | |
| } | |
| </script> |
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