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May 1, 2018 16:20
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| license: mit |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Animate Multiple Paths</title> | |
| <script src="http://d3js.org/d3.v4.js"></script> | |
| <style type="text/css"> | |
| html, body { | |
| margin: 0; padding: 0; | |
| height: 100%; | |
| } | |
| path { | |
| fill: none; | |
| stroke: #333; | |
| stroke-width: 1px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <svg id="svg"></svg> | |
| <script type="text/javascript"> | |
| const draw = function(data) { | |
| const h = 500, w = 960; | |
| const line = d3.line(); | |
| const svg = d3.select("#svg") | |
| .attr("width", w) | |
| .attr("height", h) | |
| .style("background", "#fff"); | |
| const g = svg.append("g"); | |
| const p = g.selectAll("path") | |
| .data(data) | |
| .enter() | |
| .append("path") | |
| .attr("d", d => line(d)) | |
| .attr("stroke-dasharray", function() { | |
| const totalLength = this.getTotalLength(); | |
| return totalLength + " " + totalLength; | |
| }) | |
| .attr("stroke-dashoffset", function() { | |
| const totalLength = this.getTotalLength(); | |
| return totalLength; | |
| }) | |
| .transition() | |
| .duration((d,i) => (i +1) * 2000) | |
| .ease(d3.easeLinear) | |
| .attr("stroke-dashoffset", 0); | |
| }; | |
| const randomLineData = [[[10,30],[900,30]], | |
| [[10,60],[900,60]], | |
| [[10,90],[900,90]], | |
| [[10,120],[900,120]], | |
| [[10,150],[900,150]], | |
| [[10,180],[900,180]], | |
| [[10,210],[900,210]]]; | |
| draw(randomLineData); | |
| </script> | |
| </body> | |
| </html> |
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