Zing, pow
Click it to make it go some more
Last active
August 29, 2015 14:01
-
-
Save tgs/c6892c5238dd0bb8a4e6 to your computer and use it in GitHub Desktop.
Star thingy
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> | |
| <html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| margin: 0; | |
| background: #000; | |
| min-width: 960px; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.js"></script> | |
| <script src="main.js"></script> | |
| </body> | |
| </html> |
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
| var width = Math.max(960, innerWidth), | |
| height = Math.max(500, innerHeight); | |
| var stop = 200; | |
| // TODO: randomly move the nodes! Maybe with smooth transitions | |
| var canvas = d3.select("body").append("canvas") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .on("ontouchstart" in document ? "touchdown" : "mousedown", start); | |
| var context = canvas.node().getContext("2d"); | |
| //context.globalCompositeOperation = "lighter"; | |
| var nodes = d3.range(1, 8) | |
| .map(function() { | |
| return { | |
| x: Math.random * width, | |
| y: Math.random * height, | |
| }; | |
| }); | |
| var linkArray = []; | |
| function populateLinkArray() { | |
| linkArray = []; | |
| for (var i = 0; i < nodes.length; i++) { | |
| for (var j = i + 1; j < nodes.length; j++) { | |
| if (Math.random() > 0.6) { | |
| var source = nodes[i], | |
| target = nodes[j]; | |
| linkArray.push({ | |
| scaleX: d3.scale.linear().range([source.x, target.x]), | |
| scaleY: d3.scale.linear().range([source.y, target.y]), | |
| }); | |
| } | |
| } | |
| } | |
| } | |
| populateLinkArray(); | |
| var stopAfter = 1000; // number of frames before we stop | |
| function start() { | |
| d3.timer(drawBlips); | |
| d3.timer(beat); | |
| stopAfter = 1000; | |
| } | |
| var colorScale = d3.scale.linear() | |
| .domain([0, 0.5, 1]) | |
| .range(["darkblue", "#ffffff", "#ffff22"]); | |
| var jitterX = 0, | |
| jitterY = 0; | |
| var alongLineEase = d3.ease("cubic-in-out"); | |
| //var alongLineEase = d3.ease("linear"); | |
| function drawBlips() { | |
| context.fillStyle = "rgba(0,0,0,0.4)"; | |
| context.fillRect(0, 0, width, height); | |
| context.stroke(); | |
| linkArray.forEach(function(link) { | |
| //jitterX = (Math.random() - 0.5) * 20; | |
| //jitterY = (Math.random() - 0.5) * 20; | |
| var t, x, y, size; | |
| for (var i = 0; i < 5; i++) { | |
| context.beginPath(); | |
| context.fillStyle = colorScale(Math.random()); | |
| t = alongLineEase(Math.random()); | |
| x = link.scaleX(t + Math.random() / 5); | |
| y = link.scaleY(t + Math.random() / 5); | |
| size = Math.random() * 5; | |
| context.fillRect(x + jitterX, y + jitterY, size, size); | |
| context.stroke(); | |
| } | |
| }); | |
| if (--stopAfter < 0) { | |
| return true; | |
| } | |
| } | |
| function choose(ary) { | |
| return ary[Math.floor(Math.random()*ary.length)]; | |
| } | |
| var beatmillis = 100; | |
| function beat() { | |
| verticalSlide = 0; | |
| populateLinkArray(); | |
| for (var i = 0; i < nodes.length; ++i) { | |
| if (Math.random() > 0.3) { | |
| nodes[i].x = Math.random() * width; | |
| nodes[i].y = Math.random() * height; | |
| nodes[i].dy = 0; | |
| } else { | |
| nodes[i].y += 15 + nodes[i].dy; | |
| nodes[i].dy += 15; | |
| } | |
| } | |
| if (--stopAfter < 0) { | |
| return true; | |
| } | |
| d3.timer(beat, beatmillis); | |
| return true; | |
| } | |
| start(); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment