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Arc Tween Animation
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title></title> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| width: 900px; | |
| padding-top:25px; | |
| margin:auto; | |
| background:#333; | |
| } | |
| path { | |
| fill: #eee; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var width = 900, | |
| height = 900, | |
| radius = Math.min(width, height) / 2; | |
| var arcs = []; | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append("g") | |
| .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"); | |
| for(var i = 0; i < width/10/2; i++) { | |
| arcs[i] = d3.svg.arc() | |
| .innerRadius(radius-(10*i)) | |
| .outerRadius(radius-(10*i)-5) | |
| .startAngle(-.25*2*Math.PI) | |
| .endAngle(-.25*2*Math.PI); | |
| svg.append("path").datum(i) | |
| .attr("d", arcs[i]) | |
| } | |
| function selectArcs() { | |
| d3.selectAll("path") | |
| .each(arcTween); | |
| } | |
| function arcTween(i){ | |
| var self=this, | |
| duration=1500, | |
| delay=100; | |
| setInterval(function(){ | |
| d3.select(self) | |
| .transition().delay(delay*i).duration(duration) | |
| .attrTween("d", tweenArcBack) | |
| .transition().duration(duration) | |
| .attrTween("d", tweenArc); | |
| },2*duration); | |
| } | |
| function tweenArc(b) { | |
| var i = d3.interpolate(.25*2*Math.PI, -.25*2*Math.PI); | |
| return function(t) { | |
| return arcs[b].endAngle(i(t))(); | |
| }; | |
| } | |
| function tweenArcBack(b) { | |
| var i = d3.interpolate(-.25*2*Math.PI, .25*2*Math.PI); | |
| return function(t) { | |
| return arcs[b].endAngle(i(t))(); | |
| }; | |
| } | |
| selectArcs(); | |
| </script> | |
| </body> | |
| </html> |
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