From: http://mbostock.github.io/d3/talk/20111018/collision.html
Migration from d3.js 2.10 to recent 3.3 based upon: https://github.com/mbostock/d3/wiki/Upgrading-to-3.0
Essentially there is no more d3.svg.mouse - do:
p1 = d3.mouse(this)
CoffeeScript compiled:
coffee -c collision.coffee > collision.js
| # w = 1280, h = 800 | |
| collide = (node) -> | |
| r = node.radius + 16 | |
| nx1 = node.x - r | |
| nx2 = node.x + r | |
| ny1 = node.y - r | |
| ny2 = node.y + r | |
| (quad, x1, y1, x2, y2) -> | |
| if quad.point and (quad.point isnt node) | |
| x = node.x - quad.point.x | |
| y = node.y - quad.point.y | |
| l = Math.sqrt(x * x + y * y) | |
| r = node.radius + quad.point.radius | |
| if l < r | |
| l = (l - r) / l * 0.5 | |
| node.x -= x *= l | |
| node.y -= y *= l | |
| quad.point.x += x | |
| quad.point.y += y | |
| x1 > nx2 or x2 < nx1 or y1 > ny2 or y2 < ny1 | |
| w = 600 | |
| h = 600 | |
| nodes = d3.range(200).map(->radius: Math.random() * 12 + 4) | |
| color = d3.scale.category10() | |
| force = d3.layout.force().gravity(0.05).charge((d, i) -> | |
| (if i then 0 else -2000) | |
| ).nodes(nodes).size([w, h]) | |
| root = nodes[0] | |
| root.radius = 0 | |
| root.fixed = true | |
| force.start() | |
| svg = d3.select("#body").append("svg:svg").attr("width", w).attr("height", h) | |
| svg.selectAll("circle").data(nodes.slice(1)).enter().append("svg:circle").attr("r", (d) -> | |
| d.radius - 2 | |
| ).style "fill", (d, i) -> | |
| color i % 3 | |
| force.on "tick", (e) -> | |
| q = d3.geom.quadtree(nodes) | |
| i = 0 | |
| n = nodes.length | |
| q.visit collide(nodes[i]) while ++i < n | |
| svg.selectAll("circle").attr("cx", (d) -> | |
| d.x | |
| ).attr "cy", (d) -> | |
| d.y | |
| svg.on "mousemove", -> | |
| p1 = d3.mouse(this) | |
| root.px = p1[0] | |
| root.py = p1[1] | |
| force.resume() | |
| <!DOCTYPE html> | |
| <html> | |
| <meta charset="utf-8"> | |
| <head> | |
| <!-- note: for a production use then download the minified version --> | |
| <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <link rel="stylesheet" href="style.css"/> | |
| <style type="text/css"> | |
| circle { | |
| stroke: #000; | |
| stroke-opacity: .5; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="body"> | |
| <div id="footer"> | |
| Collision Detection | |
| <div class="hint">move the mouse to repel nodes</div> | |
| </div> | |
| </div> | |
| <script type="text/javascript" src="collision.js"></script> | |
| </body> | |
| </html> |
| // Generated by CoffeeScript 1.6.3 | |
| (function() { | |
| var collide, color, force, h, nodes, root, svg, w; | |
| collide = function(node) { | |
| var nx1, nx2, ny1, ny2, r; | |
| r = node.radius + 16; | |
| nx1 = node.x - r; | |
| nx2 = node.x + r; | |
| ny1 = node.y - r; | |
| ny2 = node.y + r; | |
| return function(quad, x1, y1, x2, y2) { | |
| var l, x, y; | |
| if (quad.point && (quad.point !== node)) { | |
| x = node.x - quad.point.x; | |
| y = node.y - quad.point.y; | |
| l = Math.sqrt(x * x + y * y); | |
| r = node.radius + quad.point.radius; | |
| if (l < r) { | |
| l = (l - r) / l * 0.5; | |
| node.x -= x *= l; | |
| node.y -= y *= l; | |
| quad.point.x += x; | |
| quad.point.y += y; | |
| } | |
| } | |
| return x1 > nx2 || x2 < nx1 || y1 > ny2 || y2 < ny1; | |
| }; | |
| }; | |
| w = 600; | |
| h = 600; | |
| nodes = d3.range(200).map(function() { | |
| return { | |
| radius: Math.random() * 12 + 4 | |
| }; | |
| }); | |
| color = d3.scale.category10(); | |
| force = d3.layout.force().gravity(0.05).charge(function(d, i) { | |
| if (i) { | |
| return 0; | |
| } else { | |
| return -2000; | |
| } | |
| }).nodes(nodes).size([w, h]); | |
| root = nodes[0]; | |
| root.radius = 0; | |
| root.fixed = true; | |
| force.start(); | |
| svg = d3.select("#body").append("svg:svg").attr("width", w).attr("height", h); | |
| svg.selectAll("circle").data(nodes.slice(1)).enter().append("svg:circle").attr("r", function(d) { | |
| return d.radius - 2; | |
| }).style("fill", function(d, i) { | |
| return color(i % 3); | |
| }); | |
| force.on("tick", function(e) { | |
| var i, n, q; | |
| q = d3.geom.quadtree(nodes); | |
| i = 0; | |
| n = nodes.length; | |
| while (++i < n) { | |
| q.visit(collide(nodes[i])); | |
| } | |
| return svg.selectAll("circle").attr("cx", function(d) { | |
| return d.x; | |
| }).attr("cy", function(d) { | |
| return d.y; | |
| }); | |
| }); | |
| svg.on("mousemove", function() { | |
| var p1; | |
| p1 = d3.mouse(this); | |
| root.px = p1[0]; | |
| root.py = p1[1]; | |
| return force.resume(); | |
| }); | |
| }).call(this); |
| body { | |
| background: url(texture-noise.png); | |
| overflow: hidden; | |
| margin: 0; | |
| font-size: 14px; | |
| font-family: "Helvetica Neue", Helvetica; | |
| } | |
| #chart, #header, #footer { | |
| position: absolute; | |
| top: 0; | |
| } | |
| #header, #footer { | |
| z-index: 1; | |
| display: block; | |
| font-size: 36px; | |
| font-weight: 300; | |
| text-shadow: 0 1px 0 #fff; | |
| } | |
| #header.inverted, #footer.inverted { | |
| color: #fff; | |
| text-shadow: 0 1px 4px #000; | |
| } | |
| #header { | |
| top: 80px; | |
| left: 140px; | |
| width: 1000px; | |
| } | |
| #footer { | |
| top: 680px; | |
| right: 140px; | |
| text-align: right; | |
| } | |
| rect { | |
| fill: none; | |
| pointer-events: all; | |
| } | |
| pre { | |
| font-size: 18px; | |
| } | |
| line { | |
| stroke: #000; | |
| stroke-width: 1.5px; | |
| } | |
| .string, .regexp { | |
| color: #f39; | |
| } | |
| .keyword { | |
| color: #00c; | |
| } | |
| .comment { | |
| color: #777; | |
| font-style: oblique; | |
| } | |
| .number { | |
| color: #369; | |
| } | |
| .class, .special { | |
| color: #1181B8; | |
| } | |
| a:link, a:visited { | |
| color: #000; | |
| text-decoration: none; | |
| } | |
| a:hover { | |
| color: #666; | |
| } | |
| .hint { | |
| position: absolute; | |
| right: 0; | |
| width: 1280px; | |
| font-size: 12px; | |
| color: #999; | |
| } |
