code to generate this graphic http://www.flickr.com/photos/finty/10906891175/ Uses Pixi.js and Traer physics

Line.js

define(function (require) {
	'use strict';
	var _ = require('underscore');
	var PIXI = require('pixi');
	var toxi = require('toxi');
	var TColor = toxi.color.TColor;
	
	var Line = function(physics, points, origin) {

		this.init(physics, points, origin);
		
	};

	// constructor
	Line.prototype = Object.create( PIXI.Graphics.prototype );

	_.extend(Line.prototype, {

		init: function(physics, points, origin) {

			PIXI.Graphics.call(this);

			this.colour = 0xFFFFFF;
			this.thickness = 1;

			this.physics = physics;
			this.points = points; // An arraylist for all the particles
			this.origin = origin;

			this.draw();

		},

		draw: function() {
 
			//this.beginFill(this.colour);
			this.lineStyle(this.thickness, this.colour);
			
			this.iter = this.points.iterator();
			var pt = this.iter.next();

			if(pt) {
				this.moveTo(pt.position.x, pt.position.y);
			}

			while(this.iter.hasNext()) {
				var pt = this.iter.next();
				this.lineTo(pt.position.x, pt.position.y);
			}

			this.endFill();

		}

	});

	return Line; 
});

PhysicsTest.js

define(function (require) {
	'use strict';
	var ParticleSystem = require('traer/ParticleSystem');
	var PIXI = require('pixi');
	var ArrayList = require('vendor/processing/Objects/ArrayList');
	var Line = require('./Line');
	var PMath = require('utils/PMath');

	var PhysicsTest = function() {};

	PhysicsTest.prototype = {

		setup: function() {

			this.physics = new ParticleSystem();

			this.circleCentre = this.physics.makeParticle(0.3, this.gameWidth/2, this.gameHeight/2);

			this.makeParticles();
			this.line = new Line(this.physics, this.points, {x: this.gameWidth/2, y: this.gameHeight/2 });
			this.gameStage.addChild(this.line);
			this.line.alpha = 0.1;

		},

		makeParticles: function() {

			var twoPi = Math.PI * 2;
			var incre = twoPi/40;
			var radius = 200;
			var middle = this.gameHeight/2;
			var centre = this.gameWidth/2;

			this.points = new ArrayList();

			for(var radian=0; radian<=twoPi; radian+=incre) {

				var x = centre + radius * Math.sin(radian);
				var y = middle + radius * Math.cos(radian);
				var p = this.physics.makeParticle(0.1, x, y);
				this.physics.makeAttraction(p, this.circleCentre, PMath.random(50000, 500000), 500);
				this.points.add(p);

			}

		},

		update: function() {

			this.physics.tick();

			this.line.draw();

		}

	};

	return PhysicsTest; 
});