Last active
April 12, 2017 01:00
-
-
Save Rnhatch/1563298 to your computer and use it in GitHub Desktop.
Force Directed Layout
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> | |
| <head> | |
| <title>Force-Directed Layout</title> | |
| <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.7.4/d3.js"></script> | |
| <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.7.4/d3.geom.js"></script> | |
| <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.7.4/d3.jslayout.js"></script> | |
| // https://cdnjs.cloudflare.com/ajax/libs/d3/4.7.4/d3.js // | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| var w = 1100, | |
| h = 800, | |
| fill = d3.scale.category10(), | |
| nodes = [], | |
| foci = [{ x: 650, y: 400}], | |
| c = d3.scale.linear().domain([0, 1]).range(["hsl(200, 50%, 50%)", "hsl(330, 100%, 50%)"]).interpolate(d3.interpolateHsl), | |
| r = d3.scale.linear().domain([0,1]).range([20,40]); | |
| // foci = [{ x: 150, y: 150 }, { x: 350, y: 250 }, { x: 700, y: 400}]; | |
| var vis = d3.select("body").append("svg:svg") | |
| .attr("width", w) | |
| .attr("height", h); | |
| var force = d3.layout.force() | |
| .nodes(nodes) | |
| .links([]) | |
| .linkDistance(90) | |
| // .charge(function(d, i) { return i ? 0 : -2000; }) | |
| .gravity(0) | |
| .size([w, h]); | |
| force.on("tick", function(e) { | |
| // Push nodes toward their designated focus. | |
| var k = .01 * e.alpha; | |
| nodes.forEach(function(o, i) { | |
| o.y += (foci[o.id].y - o.y) * k; | |
| o.x += (foci[o.id].x - o.x) * k; | |
| }); | |
| vis.selectAll("circle.node") | |
| .attr("cx", function(d) { return d.x; }) | |
| .attr("cy", function(d) { return d.y; }); | |
| }); | |
| // for (i = 0; i < 100; i++) { | |
| setInterval(function() { | |
| nodes.push({ id: ~ ~(Math.random() * foci.length) }); | |
| force.start(); | |
| vis.selectAll("circle.node") | |
| .data(nodes) | |
| .enter().append("svg:circle") | |
| .attr("class", "node") | |
| .attr("cx", function(d) { return d.x; }) | |
| .attr("cy", function(d) { return d.y; }) | |
| // .attr("r", 20) | |
| .attr("r", function() { return r(Math.random()) }) | |
| .attr("fill", function() { return c(Math.random()) }) | |
| .attr("fill-opacity", .5) | |
| .style("stroke", function(d) { return d3.rgb(fill(d.id)).darker(2); }) | |
| .style("stroke-width", 1.5) | |
| .call(force.drag); | |
| }, 500); | |
| // }; | |
| </script> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
See this in action at http://bl.ocks.org/1563298