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November 19, 2016 13:36
D3 v3 force layout
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <svg width="960" height="500"></svg> | |
| <script src="https://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| const svg = d3.select('svg'); | |
| const width = svg.attr('width'); | |
| const height = svg.attr('height'); | |
| // center marker | |
| svg.append('circle') | |
| .attr('r', 5) | |
| .attr('cx', width / 2) | |
| .attr('cy', height / 2); | |
| const graph = { | |
| nodes: [{}, {}, {}, {}, {}, {}], | |
| links: [ | |
| {source: 0, target: 1}, | |
| {source: 1, target: 2}, | |
| {source: 2, target: 0}, | |
| {source: 4, target: 5} | |
| ] | |
| }; | |
| const link = svg.selectAll() | |
| .data(graph.links) | |
| .enter() | |
| .append('line') | |
| .attr('stroke', 'black') | |
| .attr('stroke-width', '5px'); | |
| const node = svg.selectAll() | |
| .data(graph.nodes) | |
| .enter() | |
| .append('circle') | |
| .attr('r', 50) | |
| .attr('fill', 'red') | |
| .attr('stroke', 'black') | |
| .attr('stroke-width', '5px'); | |
| const force = d3.layout.force() | |
| .nodes(graph.nodes) | |
| .links(graph.links) | |
| .charge(-100) | |
| .linkDistance(200) | |
| .size([width, height]) | |
| .on('tick', ticked); | |
| function ticked() { | |
| link | |
| .attr('x1', d => d.source.x) | |
| .attr('y1', d => d.source.y) | |
| .attr('x2', d => d.target.x) | |
| .attr('y2', d => d.target.y); | |
| node | |
| .attr('cx', d => d.x) | |
| .attr('cy', d => d.y); | |
| } | |
| node.call(force.drag()); | |
| force.start(); | |
| </script> |
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