Mouseover to repel nodes. Adapted from an adaptation of Mike Bostock's talk on force layouts.
Trying to get collision detection of rectangular objects.
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| pageWidth = 820 | |
| pageHeight = 600 | |
| nodes = d3.range(200).map(-> | |
| node = | |
| x: Math.random() * (pageHeight - 40) + 20 | |
| y: Math.random() * (pageWidth - 40) + 20 | |
| width: (Math.random() * 5 + 3) * 9 | |
| height: 18 | |
| x2: -> node.x + node.width | |
| y2: -> node.y + node.height | |
| ) | |
| root = nodes[0] | |
| root.fixed = true | |
| color = d3.scale.category10(); | |
| force = d3.layout.force() | |
| .gravity(0.05) | |
| .charge((d,i) -> if i then -40 else -2000) | |
| .nodes(nodes) | |
| .size([pageWidth, pageHeight]) | |
| .start() | |
| svg = d3.select("body").append("svg") | |
| .attr("width", pageWidth) | |
| .attr("height", pageHeight) | |
| svg.selectAll("rect") | |
| .data(nodes.slice 1) | |
| .enter().append("rect") | |
| .attr("width", (d)->d.width) | |
| .attr("height", (d)->d.height) | |
| .style("fill", (d, i) -> color(i % 3)) | |
| overlap = (a, b) -> | |
| (a.x < b.x < a.x2() and a.y < b.y < a.y2()) or | |
| (a.x < b.x2() < a.x2() and a.y < b.y2() < a.y2()) | |
| collide = (node) -> | |
| padding = 32 | |
| nx1 = node.x - padding | |
| nx2 = node.x2() + padding | |
| ny1 = node.y - padding | |
| ny2 = node.y2() + padding | |
| (quad, x1, y1, x2, y2) -> | |
| if (quad.point and (quad.point isnt node)) | |
| if overlap(node, quad.point) | |
| dy = Math.min( | |
| node.y2() - quad.point.y, | |
| quad.point.y2() - node.y)/2 | |
| node.y -= dy | |
| quad.point.y += dy | |
| x1 > nx2 or x2 < nx1 or y1 > ny2 or y2 < ny1 | |
| force.on "tick", (e) -> | |
| q = d3.geom.quadtree(nodes) | |
| q.visit(collide node) for node in nodes | |
| svg.selectAll("rect") | |
| .attr("x", (d)->d.x) | |
| .attr("y", (d)->d.y) | |
| svg.on "mousemove", -> | |
| p1 = d3.mouse(this) | |
| root.px = p1[0] | |
| root.py = p1[1] | |
| force.resume() | |
| #Copyright 2014 Eric Dobbs | |
| # | |
| #Licensed under the Apache License, Version 2.0 (the "License"); | |
| #you may not use this file except in compliance with the License. | |
| #You may obtain a copy of the License at | |
| # | |
| #http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| #Unless required by applicable law or agreed to in writing, software | |
| #distributed under the License is distributed on an "AS IS" BASIS, | |
| #WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| #See the License for the specific language governing permissions and | |
| #limitations under the License. |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <body> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/coffee-script/1.7.1/coffee-script.min.js"></script> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script src="code.coffee" type="text/coffeescript"></script> |
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