forked from hsuh's block: Force layout constrained
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February 18, 2016 14:51
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Force layout constrained
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| var width= 960; var height = 500; | |
| var color = d3.scale.category20(); | |
| var cola = cola.d3adaptor() | |
| .linkDistance(200) | |
| .avoidOverlaps(true) | |
| .size([width,height]) | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| d3.json("graph_data.json", function(error, graph) { | |
| cola.nodes(graph.nodes) | |
| .links(graph.links) | |
| .constraints(graph.constraints) | |
| .start(); | |
| graph.nodes.forEach(function(d) { | |
| d.width = d.width||60; | |
| d.height = d.height||30; | |
| }); | |
| var link = svg.selectAll(".link") | |
| .data(graph.links) | |
| .enter().append("line") | |
| .attr("class", "link"); | |
| var node = svg.selectAll(".node") | |
| .data(graph.nodes) | |
| .enter().append("rect") | |
| .attr("class", "node") | |
| .attr("width", function (d) { return d.width; }) | |
| .attr("height", function (d) { return d.height; }) | |
| .attr("rx", 5).attr("ry", 5) | |
| .style("fill", function (d) { return color(1); }) | |
| .call(cola.drag); | |
| var label = svg.selectAll(".label") | |
| .data(graph.nodes) | |
| .enter().append("text") | |
| .attr("class", "label") | |
| .text(function (d) { return d.name; }) | |
| .call(cola.drag); | |
| node.append("title") | |
| .text(function (d) { return d.name; }); | |
| cola.on("tick", function () { | |
| link.attr("x1", function (d) { return d.source.x; }) | |
| .attr("y1", function (d) { return d.source.y; }) | |
| .attr("x2", function (d) { return d.target.x; }) | |
| .attr("y2", function (d) { return d.target.y; }); | |
| node.attr("x", function (d) { return d.x - d.width / 2; }) | |
| .attr("y", function (d) { return d.y - d.height / 2; }); | |
| label.attr("x", function (d) { return d.x; }) | |
| .attr("y", function (d) { | |
| var h = this.getBBox().height; | |
| return d.y + h/4; | |
| }); | |
| }); | |
| }); |
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| { | |
| "nodes":[ | |
| {"name":"A"}, | |
| {"name":"B"}, | |
| {"name":"C"}, | |
| {"name":"D"}, | |
| {"name":"E"}, | |
| {"name":"F"}, | |
| {"name":"G"}, | |
| {"name":"H"} | |
| ], | |
| "links":[ | |
| {"source":0,"target":1}, | |
| {"source":0,"target":5}, | |
| {"source":0,"target":6}, | |
| {"source":0,"target":7}, | |
| {"source":1,"target":2}, | |
| {"source":2,"target":0}, | |
| {"source":2,"target":3} | |
| ], | |
| "constraints":[ | |
| {"type":"alignment", | |
| "axis":"x", | |
| "offsets":[ | |
| {"node":"1", "offset":"0"}, | |
| {"node":"2", "offset":"0"}, | |
| {"node":"3", "offset":"0"} | |
| ]}, | |
| {"type":"alignment", | |
| "axis":"y", | |
| "offsets":[ | |
| {"node":"0", "offset":"0"}, | |
| {"node":"1", "offset":"0"}, | |
| {"node":"4", "offset":"0"} | |
| ]} | |
| ] | |
| } |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <html> | |
| <head> | |
| <link rel="stylesheet" href="style.css"> | |
| <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <script src="http://marvl.infotech.monash.edu/webcola/cola.v2.min.js"></script> | |
| </head> | |
| <body> | |
| <h1> Force layout constrained </h1> | |
| <script src="d3cola.js"></script> | |
| </body> | |
| </html> |
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| .node { | |
| stroke: #fff; | |
| stroke-width: 1.5px; | |
| cursor: move; | |
| } | |
| .link { | |
| stroke: #999; | |
| stroke-width: 3px; | |
| stroke-opacity: 1; | |
| } | |
| .label { | |
| fill: white; | |
| font-family: Verdana; | |
| font-size: 25px; | |
| text-anchor: middle; | |
| cursor: move; | |
| } |
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