108 lines
3.6 KiB
JavaScript
108 lines
3.6 KiB
JavaScript
function getOffset( el ) {
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var _x = 0;
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var _y = 0;
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while( el && !isNaN( el.offsetLeft ) && !isNaN( el.offsetTop ) ) {
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_x += el.offsetLeft - el.scrollLeft;
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_y += el.offsetTop - el.scrollTop;
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el = el.offsetParent;
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}
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return { top: _y, left: _x };
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}
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var offset = getOffset(document.getElementById('chart'));
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var w = window.innerWidth - offset.left,
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h = window.innerHeight - offset.top,
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fill = d3.scale.category20();
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var vis = d3.select("#chart").append("svg")
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.attr("width", w)
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.attr("height", h);
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d3.json("nodes.json", function(json) {
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var force = d3.layout.force()
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.charge(-100)
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.gravity(0.02)
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.friction(0.75)
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.theta(0.1)
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.linkDistance(function (d) { return d.distance; })
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.linkStrength(function (d) { return d.strength; })
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.nodes(json.nodes)
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.links(json.links)
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.size([w, h])
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.start();
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var linkedByIndex = {};
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json.links.forEach(function(d) {
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linkedByIndex[d.source.index + "," + d.target.index] = 1;
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});
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var link = vis.selectAll("line.link")
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.data(json.links)
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.enter().append("line")
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.attr("class", "link")
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.style("stroke-width", function(d) { return Math.min(1, d.strength * 2); })
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.attr("x1", function(d) { return d.source.x; })
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.attr("y1", function(d) { return d.source.y; })
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.attr("x2", function(d) { return d.target.x; })
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.attr("y2", function(d) { return d.target.y; });
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function isConnected(a, b) {
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return linkedByIndex[a.index + "," + b.index] || linkedByIndex[b.index + "," + a.index] || a.index == b.index;
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}
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function fade(opacity) {
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return function(d) {
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node.style("stroke-opacity", function(o) {
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var connected = isConnected(d, o);
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if (connected && opacity != 1)
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d3.select(this).classed("highlight", true);
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else
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d3.select(this).classed("highlight", false);
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thisOpacity = connected ? 1 : opacity;
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this.setAttribute('fill-opacity', thisOpacity);
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return thisOpacity;
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});
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link.style("stroke-opacity", function(o) {
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return o.source === d || o.target === d ? 1 : opacity;
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});
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};
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}
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var node = vis.selectAll("svg.node")
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.data(json.nodes)
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.enter().append("g")
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.attr("class", "node")
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.on("mouseover", fade(.2))
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.on("mouseout", fade(1))
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.call(force.drag);
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node.append("ellipse")
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.attr("rx", function(d) { if (d.group == 3) return 4; else return Math.max(10, d.name.length * 5); })
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.attr("ry", function(d) { if (d.group == 3) return 4; else return 10; })
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.style("fill", function(d) { if (d.group == 3) return fill(d.group); else return ""; })
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.style("stroke", function(d) { return fill(d.group); });
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node.append("text")
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.attr("text-anchor", "middle")
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.attr("y", "4px")
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.text(function(d) { if (d.group == 3) return ""; else return d.name; });
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node.append("title")
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.text(function(d) { return d.macs; });
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force.on("tick", function() {
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link.attr("x1", function(d) { return d.source.x; })
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.attr("y1", function(d) { return d.source.y; })
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.attr("x2", function(d) { return d.target.x; })
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.attr("y2", function(d) { return d.target.y; });
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node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
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});
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});
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