Created
December 11, 2012 03:31
-
-
Save satomacoto/4255719 to your computer and use it in GitHub Desktop.
D3 random particles
This file contains hidden or 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
| <html> | |
| <head> | |
| <title> | |
| </title> | |
| <script src="http://d3js.org/d3.v2.js"></script> | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| var w = 500; | |
| var h = 500; | |
| var barpadding = 1; | |
| var color = d3.scale.category20(); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", w) | |
| .attr("height", h); | |
| var dataset = []; | |
| var N = 20; | |
| var T = 10; | |
| for (var i = 0; i < N; i++) { | |
| data = []; | |
| for (var j = 0; j < T; j++) { | |
| var d = {}; | |
| d.x = Math.random() * w; | |
| d.y = Math.random() * h; | |
| d.color = color(Math.random() * 20) | |
| data.push(d); | |
| } | |
| dataset.push(data); | |
| } | |
| var circles = svg.selectAll("circle") | |
| .data(dataset[0]) | |
| .enter() | |
| .append("circle") | |
| .attr("cx", function(d) { | |
| return d.x; | |
| }) | |
| .attr("cy", function(d) { | |
| return d.y; | |
| }) | |
| .attr("fill", function(d) { | |
| return d.color; | |
| }) | |
| .attr("r", 5); | |
| var t = 0; | |
| var move_step = function(step) { | |
| t += step | |
| if (T <= t) | |
| t = T - 1 | |
| else if (t < 0) | |
| t = 0 | |
| data = dataset[t]; | |
| circles.each(function(d, i){ | |
| d3.select(this).transition().attr("cx", data[i].x).attr("cy", data[i].y).attr("fill", data[i].color); | |
| }); | |
| }; | |
| </script> | |
| <button id="previous" onclick="move_step(-1);"><</button> | |
| <button id="next" onclick="move_step(1);">></button> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment