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Molecule
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| { | |
| "nodes": [ | |
| {"atom": "C", "size": 12, "id": 1}, | |
| {"atom": "C", "size": 12, "id": 2}, | |
| {"atom": "C", "size": 12, "id": 3}, | |
| {"atom": "N", "size": 14, "id": 4}, | |
| {"atom": "H", "size": 1, "id": 5}, | |
| {"atom": "O", "size": 16, "id": 6}, | |
| {"atom": "O", "size": 16, "id": 7}, | |
| {"atom": "H", "size": 1, "id": 8}, | |
| {"atom": "H", "size": 1, "id": 9}, | |
| {"atom": "H", "size": 1, "id": 10}, | |
| {"atom": "H", "size": 1, "id": 11}, | |
| {"atom": "H", "size": 1, "id": 12}, | |
| {"atom": "H", "size": 1, "id": 13} | |
| ], | |
| "links": [ | |
| {"source": 0, "target": 1, "bond": 1, "id": 1}, | |
| {"source": 1, "target": 2, "bond": 1, "id": 2}, | |
| {"source": 1, "target": 3, "bond": 1, "id": 3}, | |
| {"source": 2, "target": 5, "bond": 2, "id": 4}, | |
| {"source": 2, "target": 6, "bond": 1, "id": 5}, | |
| {"source": 1, "target": 4, "bond": 1, "id": 6}, | |
| {"source": 3, "target": 10, "bond": 1, "id": 7}, | |
| {"source": 3, "target": 11, "bond": 1, "id": 8}, | |
| {"source": 0, "target": 7, "bond": 1, "id": 9}, | |
| {"source": 0, "target": 8, "bond": 1, "id": 10}, | |
| {"source": 0, "target": 9, "bond": 1, "id": 11}, | |
| {"source": 5, "target": 12, "bond": 1, "id": 12} | |
| ] | |
| } |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .link line { | |
| stroke: #696969; | |
| } | |
| .link line.separator { | |
| stroke: #fff; | |
| stroke-width: 2px; | |
| } | |
| .node circle { | |
| stroke: #000; | |
| stroke-width: 1.5px; | |
| } | |
| .node text { | |
| font: 10px sans-serif; | |
| pointer-events: none; | |
| } | |
| .cursor { | |
| fill: none; | |
| stroke: brown; | |
| pointer-events: none; | |
| } | |
| </style> | |
| <body> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| var color = d3.scale.category20(); | |
| var radius = d3.scale.sqrt() | |
| .range([0, 6]); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .on("mousemove", mousemove) | |
| .on("mousedown", mousedownCanvas); | |
| var force = d3.layout.force() | |
| .size([width, height]) | |
| .charge(-400) | |
| .linkDistance(function(d) { return radius(d.source.size) + radius(d.target.size) + 20; }); | |
| var nodes, | |
| links, | |
| node, | |
| link; | |
| var cursor; | |
| d3.json("graph.json", function(error, graph) { | |
| if (error) throw error; | |
| force | |
| .nodes(graph.nodes) | |
| .links(graph.links) | |
| .on("tick", tick); | |
| nodes = force.nodes(); | |
| links = force.links(); | |
| node = svg.selectAll(".node"); | |
| link = svg.selectAll(".link"); | |
| cursor = svg.append("circle") | |
| .attr("r", 30) | |
| .attr("transform", "translate(-100,-100)") | |
| .attr("class", "cursor"); | |
| restart(); | |
| }); | |
| function mousemove() { | |
| cursor.attr("transform", "translate(" + d3.mouse(this) + ")"); | |
| } | |
| function mousedownCanvas() { | |
| var newNodeId = Math.max.apply(Math, nodes.map(function(o) { return o.id; })) + 1; | |
| var point = d3.mouse(this), | |
| node = {atom: "C", size: 12, x: point[0], y: point[1], id: newNodeId}, | |
| n = nodes.push(node); | |
| // add links to any nearby nodes | |
| nodes.forEach(function(target) { | |
| var x = target.x - node.x, | |
| y = target.y - node.y; | |
| if (Math.sqrt(x * x + y * y) < (36 + target.size) && node !== target) { | |
| var newLinkId = Math.max.apply(Math, links.map(function(o) { return o.id; })) + 1; | |
| links.push({source: node, target: target, bond: 1, id: newLinkId}); | |
| } | |
| }); | |
| restart(); | |
| } | |
| function mousedownNode(d, i) { | |
| nodes = nodes.filter(function(e) { return e.id !== d.id; }); | |
| links = links.filter(function(l) { | |
| return l.source.id !== d.id && l.target.id !== d.id; | |
| }); | |
| d3.event.stopPropagation(); | |
| restart(); | |
| } | |
| function tick() { | |
| link.selectAll("line") | |
| .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("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; }); | |
| } | |
| function restart() { | |
| link = link.data(links, function(d) { return d.id; }); | |
| var enterLinks = link.enter().insert("g") | |
| .attr("class", "link"); | |
| enterLinks.append("line") | |
| .style("stroke-width", function(d) { return (d.bond * 2 - 1) * 2 + "px"; }); | |
| enterLinks.filter(function(d) { return d.bond > 1; }).append("line") | |
| .attr("class", "separator"); | |
| link.exit() | |
| .remove(); | |
| node = node.data(nodes, function(d) { return d.id; }); | |
| var enterNodes = node.enter().insert("g") | |
| .attr("class", "node"); | |
| enterNodes.append("circle") | |
| .attr("r", function(d) { return radius(d.size); }) | |
| .style("fill", function(d) { return color(d.atom); }) | |
| .on("mousedown", mousedownNode); | |
| enterNodes.append("text") | |
| .attr("dy", ".35em") | |
| .attr("text-anchor", "middle") | |
| .text(function(d) { return d.atom; }); | |
| node.exit() | |
| .remove(); | |
| force | |
| .nodes(nodes) | |
| .links(links) | |
| .start(); | |
| } | |
| </script> |
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