A simple demo with d3.timer()
forked from syntagmatic's block: Clock
forked from zanarmstrong's block: Time Data Comet
Last active
March 12, 2016 22:44
-
-
Save micahstubbs/7fa897e01dcb94962be6 to your computer and use it in GitHub Desktop.
Time Data Comet
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| license: CC0-1.0 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| background: #eee; | |
| width: 960px; | |
| } | |
| </style> | |
| <body> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> | |
| <script> | |
| // standard dimension variables | |
| var width = 960, | |
| height = 500; | |
| // basic SVG setup | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append("g") | |
| .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"); | |
| var x = d3.scale.linear() | |
| .domain([0, 60]) | |
| .range([0, width/5]) | |
| var y = d3.scale.linear() | |
| .domain([0, 60]) | |
| .range([height/3, 0]) | |
| var rScale = d3.scale.pow() | |
| .domain([0, 60]) | |
| .range([0, 40]) | |
| .exponent(4) | |
| var opacityScale = d3.scale.pow() | |
| .domain([0, 60]) | |
| .range([.7, .1]) | |
| .exponent(.2) | |
| // tick time | |
| var counter = 0; | |
| function tick() { | |
| if (counter++ % 5 != 0) return; // ease up on cpu | |
| //console.log(getTimeData().seconds) | |
| svg.append("circle") | |
| .attr("cx", x(getTimeData().seconds)) | |
| .attr("cy", y(getTimeData().seconds)) | |
| .attr("r", rScale(getTimeData().seconds)) | |
| .style("opacity", opacityScale(getTimeData().seconds)) | |
| .style("fill", "steelblue") | |
| .transition() | |
| .delay(30000) | |
| .remove() | |
| svg.append("text") | |
| svg.select("text").text(getTimeData().seconds) | |
| /* | |
| svg.append("line") | |
| .attr("x1", 10) | |
| .attr("x2", 10) | |
| .attr("y1", y(getTimeData().seconds)) | |
| .attr("y2", y(getTimeData().seconds)) | |
| .style("fill", "orange") | |
| .style("stroke", "orange") | |
| .transition() | |
| .delay(4000) | |
| .remove() | |
| */ | |
| } | |
| d3.timer(tick); | |
| // get time function | |
| function getTimeData() { | |
| var now = new Date; | |
| var milliseconds = now.getMilliseconds(); | |
| var seconds = now.getSeconds() + milliseconds / 1000; | |
| var minutes = now.getMinutes() + seconds / 60; | |
| var hours = ((now.getHours() + 24) % 12 || 0) + minutes / 60; | |
| return {date: now, ms: milliseconds, seconds: seconds, minutes: minutes, hours: hours} | |
| } | |
| </script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment