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Fun with lines
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| license: mit | |
| height: 210 |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://unpkg.com/d3"></script> | |
| <script src="https://unpkg.com/d3-jetpack"></script> | |
| <style> | |
| body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
| svg { margin: 0 auto; } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| const numberOfLines = 10; | |
| let data = { v: [], h: [] }; | |
| for (let i = 0; i < parseInt(numberOfLines); i++) { | |
| data.v.push([{ x: Math.random(), y: 0 }, { x: Math.random(), y: 1 }]); | |
| data.h.push([{ x: 0, y: Math.random() }, { x: 1, y: Math.random() }]); | |
| } | |
| const svg = d3 | |
| .select('body') | |
| .append('svg') | |
| .at({ width: 200, height: 200 }); | |
| const blues = d3.scaleOrdinal(d3.schemeBlues[9]); | |
| const scale = d3 | |
| .scaleLinear() | |
| .domain([0, 1]) | |
| .range([10, 200 - 10]); | |
| const line = d3 | |
| .line() | |
| .x(d => scale(d.x)) | |
| .y(d => scale(d.y)); | |
| function drawLines(selection, data, className) { | |
| selection.selectAll(className) | |
| .data(data) | |
| .enter() | |
| .append('path') | |
| .at({ | |
| class: className + ' line', | |
| fill: 'none', | |
| strokeLinecap: 'round', | |
| d: line, | |
| }); | |
| } | |
| function draw() { | |
| d3.selectAll('.line').each(function() { | |
| d3 | |
| .select(this) | |
| .transition() | |
| .duration(100) | |
| .at({ strokeWidth: 0 }); | |
| }); | |
| const vlines = drawLines(svg, data.v, '.vlines') | |
| const hlines = drawLines(svg, data.h, '.hlines') | |
| d3.selectAll('.line').each(function(d, i) { | |
| const totalLength = d3 | |
| .select(this) | |
| .node() | |
| .getTotalLength(); | |
| d3 | |
| .select(this) | |
| .at({ | |
| strokeDasharray: totalLength + ' ' + totalLength, | |
| strokeDashoffset: totalLength, | |
| }) | |
| .transition() | |
| .duration(200) | |
| .delay(100 * i) | |
| .at({ strokeDashoffset: 0 }) | |
| .st({ | |
| strokeWidth: Math.random() * 20, | |
| stroke: d3.interpolateSpectral(Math.random()), | |
| }); | |
| }); | |
| } | |
| draw(data); | |
| setInterval(() => { | |
| let data = { v: [], h: [] }; | |
| for (let i = 0; i < parseInt(numberOfLines); i++) { | |
| data.v.push([{ x: Math.random(), y: 0 }, { x: Math.random(), y: 1 }]); | |
| data.h.push([{ x: 0, y: Math.random() }, { x: 1, y: Math.random() }]); | |
| } | |
| return draw(data); | |
| }, 3000); | |
| </script> | |
| </body> |
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