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I Make Circles
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| license: gpl-3.0 |
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| <!DOCTYPE html> | |
| <style> | |
| button { | |
| position: absolute; | |
| top: 10px; | |
| left: 10px; | |
| } | |
| circle { | |
| fill: none; | |
| stroke: #000; | |
| stroke-width: 1.5px; | |
| } | |
| </style> | |
| <button>Click Me</button> | |
| <svg width="960" height="500"></svg> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var svg = d3.select("svg"), | |
| margin = {top: 30, right: 30, bottom: 30, left: 30}, | |
| width = +svg.attr("width") - margin.left - margin.right, | |
| height = +svg.attr("height") - margin.top - margin.bottom, | |
| g = svg.append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| var x = d3.scaleTime() | |
| .range([0, width]); | |
| var xAxis = d3.axisBottom(x); | |
| var xAxisG = g.append("g") | |
| .attr("transform", "translate(0, " + height + ")"); | |
| d3.timer(function() { | |
| var now = Date.now(); | |
| x.domain([now - 5000, now]); | |
| xAxisG.call(xAxis); | |
| }); | |
| d3.select("button").on("click", function() { | |
| var time = Date.now(); | |
| var circle = g.append("circle") | |
| .attr("r", 80) | |
| .attr("stroke-opacity", 0) | |
| .attr("cy", Math.random() * height); | |
| circle.transition("time") | |
| .duration(5000) | |
| .ease(d3.easeLinear) | |
| .attrTween("cx", function(d) { return function(t) { return x(time); }; }) | |
| circle.transition() | |
| .duration(750) | |
| .ease(d3.easeCubicOut) | |
| .attr("r", 3.5) | |
| .attr("stroke-opacity", 1) | |
| .transition() | |
| .delay(5000 - 750 * 2) | |
| .ease(d3.easeCubicIn) | |
| .attr("r", 80) | |
| .attr("stroke-opacity", 0) | |
| .remove(); | |
| }); | |
| </script> |
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