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| <html> | |
| <head> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| </head> | |
| <body> | |
| <script src="script.js"></script> | |
| </body> | |
| </html> |
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| width = 960 | |
| height = 505 | |
| data = [{ | |
| left: 0, | |
| top: 0, | |
| size: 1024, | |
| color: d3.hsl(360 * Math.random(), 0.5, 0.5) | |
| }] | |
| svg = d3.select('body').append('svg').style('width', width).style('height', height) | |
| function perturbColor(color) { | |
| return d3.hsl( | |
| color.h + (Math.random() - 0.5) * 80, | |
| color.s + (Math.random() - 0.5) * 0.1, | |
| color.l + (Math.random() - 0.5) * 0.1 | |
| ) | |
| } | |
| function splitGroup(datum) { | |
| if (datum.size < 16) { | |
| return; | |
| } | |
| group = d3.select(this.parentNode) | |
| newSize = datum.size / 2 | |
| newGroups = [ | |
| {top: datum.top, left: datum.left, size: newSize, color: perturbColor(datum.color)}, | |
| {top: datum.top, left: datum.left + newSize, size: newSize, color: perturbColor(datum.color)}, | |
| {top: datum.top + newSize, left: datum.left, size: newSize, color: perturbColor(datum.color)}, | |
| {top: datum.top + newSize, left: datum.left + newSize, size: newSize, color: perturbColor(datum.color)}, | |
| ] | |
| newGroups = newGroups.filter((d) => d.left < width && d.top < height) | |
| group.selectAll('rect.new').data(newGroups).call(fillGroup) | |
| } | |
| function fillGroup(group) { | |
| group.enter().append('rect') | |
| .attr('x', (d) => d.left) | |
| .attr('y', (d) => d.top) | |
| .attr('height', (d) => d.size) | |
| .attr('width', (d) => d.size) | |
| .attr('fill', (d) => d.color.toString()) | |
| .attr('opacity', 0).transition().attr('opacity', 1).transition().on('start', splitGroup) | |
| } | |
| svg.selectAll('rect.new') | |
| .data(data) | |
| .call(fillGroup) |
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