A clock made using SVG circle and d3-timer.
The current hour is represented in red, the current minute in orange and the second in yellow.
Last active
March 11, 2018 19:26
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D3 clock
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| license: gpl-3.0 |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <style type="text/css"> | |
| svg { | |
| background-color: #bdbdbd; | |
| width: 500px; | |
| height: 500px; | |
| } | |
| circle { | |
| fill: #f0f0f0; | |
| } | |
| .second { | |
| fill: #fecc5c; | |
| } | |
| .minute { | |
| fill: #fd8d3c; | |
| } | |
| .hour { | |
| fill: #bd0026; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <svg></svg> | |
| </body> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script src="https://d3js.org/d3-timer.v1.min.js"></script> | |
| <script type="text/javascript"> | |
| var svg = d3.select("svg") | |
| // Create the clock | |
| var items = 60; | |
| var x0 = 250; | |
| var y0 = 250; | |
| var r = 240 | |
| for(var i = 0; i < items; i++) { | |
| var x = x0 + r * Math.cos(2 * Math.PI * i / items); | |
| var y = y0 + r * Math.sin(2 * Math.PI * i / items); | |
| if (i < 45) { | |
| var id = i + 15 | |
| } else { | |
| var id = i % 45 | |
| } | |
| var circle = svg.append("circle") | |
| .attr("cx", x) | |
| .attr("cy", y) | |
| .attr("id", "c_" + id) | |
| if (i % 5 == 0) { | |
| circle.attr("r", 5) | |
| } else { | |
| circle.attr("r", 3) | |
| } | |
| } | |
| var t = d3.interval(function(elapsed) { | |
| // Clear the previous second, minute, hour | |
| d3.select("circle.second") | |
| .classed("second", false) | |
| d3.select("circle.minute") | |
| .classed("minute", false) | |
| d3.select("circle.hour") | |
| .classed("hour", false) | |
| // Check the current time | |
| var current_time = new Date() | |
| // Display the current second, minute, hour | |
| d3.select("circle#c_" + current_time.getSeconds()) | |
| .classed("second", true) | |
| d3.select("circle#c_" + current_time.getMinutes()) | |
| .classed("minute", true) | |
| d3.select("circle#c_" + current_time.getHours() %12 * 5) | |
| .classed("hour", true) | |
| }, 1000); // Every second | |
| </script> | |
| </html> |
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