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Arc Tween (Clock)
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?1.27.2"></script> | |
| <style type="text/css"> | |
| path { | |
| fill-rule: evenodd; | |
| fill: #aaa; | |
| fill-opacity: .7; | |
| stroke: #666; | |
| stroke-width: 1.5px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| var w = 960, | |
| h = 500, | |
| x = d3.scale.ordinal().domain(d3.range(3)).rangePoints([0, w], 2); | |
| var fields = [ | |
| {name: "hours", value: 0, size: 24}, | |
| {name: "minutes", value: 0, size: 60}, | |
| {name: "seconds", value: 0, size: 60} | |
| ]; | |
| var arc = d3.svg.arc() | |
| .innerRadius(100) | |
| .outerRadius(140) | |
| .startAngle(0) | |
| .endAngle(function(d) { return (d.value / d.size) * 2 * Math.PI; }); | |
| var svg = d3.select("body").append("svg:svg") | |
| .attr("width", w) | |
| .attr("height", h) | |
| .append("svg:g") | |
| .attr("transform", "translate(0," + (h / 2) + ")"); | |
| setInterval(function() { | |
| var now = new Date(); | |
| fields[0].previous = fields[0].value; fields[0].value = now.getHours(); | |
| fields[1].previous = fields[1].value; fields[1].value = now.getMinutes(); | |
| fields[2].previous = fields[2].value; fields[2].value = now.getSeconds(); | |
| var path = svg.selectAll("path") | |
| .data(fields.filter(function(d) { return d.value; }), function(d) { return d.name; }); | |
| path.enter().append("svg:path") | |
| .attr("transform", function(d, i) { return "translate(" + x(i) + ",0)"; }) | |
| .transition() | |
| .ease("elastic") | |
| .duration(750) | |
| .attrTween("d", arcTween); | |
| path.transition() | |
| .ease("elastic") | |
| .duration(750) | |
| .attrTween("d", arcTween); | |
| path.exit().transition() | |
| .ease("bounce") | |
| .duration(750) | |
| .attrTween("d", arcTween) | |
| .remove(); | |
| }, 1000); | |
| function arcTween(b) { | |
| var i = d3.interpolate({value: b.previous}, b); | |
| return function(t) { | |
| return arc(i(t)); | |
| }; | |
| } | |
| </script> | |
| </body> | |
| </html> |
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