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forked from anonymous's block: fresh block
forked from anonymous's block: fresh block
forked from anonymous's block: Spinning Ovals
Created
May 12, 2017 11:05
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Spinning Ovals
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| license: mit |
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <style> | |
| body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
| .stop-left { | |
| stop-color: RGBA(0, 192, 191, 0.5); /* Indigo */ | |
| } | |
| .stop-right { | |
| stop-color: RGBA(44, 161, 252, 0.5); /* Teal */ | |
| } | |
| .outlined { | |
| fill: none; | |
| stroke: url(#mainGradient); | |
| stroke-width: 25; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| var svgDefs = svg.append('defs'); | |
| var mainGradient = svgDefs.append('linearGradient') | |
| .attr('id', 'mainGradient'); | |
| // Create the stops of the main gradient. Each stop will be assigned | |
| // a class to style the stop using CSS. | |
| mainGradient.append('stop') | |
| .attr('class', 'stop-left') | |
| .attr('offset', '0'); | |
| mainGradient.append('stop') | |
| .attr('class', 'stop-right') | |
| .attr('offset', '1'); | |
| var oval1 = svg.append("ellipse") | |
| .classed("outlined", true) | |
| .attr("cx", width / 2) | |
| .attr("cy", height / 2) | |
| .attr("rx", 110) | |
| .attr("ry", 100); | |
| var oval2 = svg.append("ellipse") | |
| .classed("outlined", true) | |
| .attr("cx", width / 2) | |
| .attr("cy", height / 2) | |
| .attr("rx", 110) | |
| .attr("ry", 100); | |
| d3.timer(function (elapsed) { | |
| var speed = 1500, | |
| offset = 75, | |
| omega1 = elapsed % speed / speed * 360, | |
| omega2 = elapsed % speed / speed * 360 - offset; | |
| oval1.attr("transform", "rotate(" + omega1 + "," + width/2 + "," + height/2 + ")") | |
| oval2.attr("transform", "rotate(" + omega2 + "," + width/2 + "," + height/2 + ")") | |
| }) | |
| </script> | |
| </body> |
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