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259 lines
7.8 KiB
JavaScript
259 lines
7.8 KiB
JavaScript
// D3 visualization
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// TODO: D3 as a service
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panelApp.directive('d3', function($compile) {
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return {
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restrict: 'E',
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terminal: true,
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scope: {
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val: '=val'
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},
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link: function (scope, element, attrs) {
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// Based on code from: http://mbostock.github.com/d3/talk/20111116/bundle.html
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// Initialize Element
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// ------------------
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var div = d3.select(element[0]);
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// Constants
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// ---------
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var w = 600,
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h = 600,
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rx = w / 2,
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ry = h / 2,
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m0,
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rotate = 0;
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// Helpers
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// -------
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// generate element ids that do not have '$'
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var sanitize = function (key) {
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return key.replace('$', 'dollar')
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}
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var packages = {
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// Lazily construct the package hierarchy from class names.
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root: function(classes) {
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var map = {};
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// add "classes" with no dependencies
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var exist = {},
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toAdd = [];
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classes.forEach(function (cl) {
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exist[cl.name] = true;
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});
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classes.forEach(function (cl) {
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cl.imports.forEach(function (im) {
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if (!exist[im]) {
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toAdd.push(im);
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exist[im] = true;
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}
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});
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});
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toAdd.forEach(function (a) {
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classes.push({
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name: a,
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size: 0,
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imports: []
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});
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});
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function find(name, data) {
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var node = map[name], i;
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if (!node) {
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node = map[name] = data || {name: name, children: []};
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if (name.length) {
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node.parent = find(name.substring(0, i = name.lastIndexOf(".")));
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node.parent.children.push(node);
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node.key = name.substring(i + 1);
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}
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}
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return node;
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}
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classes.forEach(function(d) {
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find(d.name, d);
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});
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return map[""];
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},
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// Return a list of imports for the given array of nodes.
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imports: function(nodes) {
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var map = {},
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imports = [];
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// Compute a map from name to node.
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nodes.forEach(function(d) {
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map[d.name] = d;
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});
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// For each import, construct a link from the source to target node.
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nodes.forEach(function(d) {
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if (d.imports) d.imports.forEach(function(i) {
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imports.push({source: map[d.name], target: map[i]});
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});
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});
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return imports;
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}
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};
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// Instantiate and Style D3 Objects
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// --------------------------------
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var cluster = d3.layout.cluster()
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.size([360, ry - 120])
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.sort(function(a, b) { return d3.ascending(a.key, b.key); });
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var bundle = d3.layout.bundle();
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var line = d3.svg.line.radial()
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.interpolate("bundle")
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.tension(.85)
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.radius(function(d) { return d.y; })
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.angle(function(d) { return d.x / 180 * Math.PI; });
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var svg = div.append("svg:svg")
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.attr("preserveAspectRatio", "xMinYMin meet")
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.attr("viewBox", [0, 0, w, h].join(' '))
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.attr("height", h)
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.append("svg:g")
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.attr("transform", "translate(" + rx + "," + ry + ")");
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svg.append("svg:path")
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.attr("class", "arc")
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.attr("d", d3.svg.arc().outerRadius(ry - 120).innerRadius(0).startAngle(0).endAngle(2 * Math.PI))
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.on("mousedown", mousedown);
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// Render the data whenever "val" changes
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// --------------------------------------
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scope.$watch('val', function (newVal, oldVal) {
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var classes = newVal;
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if (oldVal || !classes || classes.length === 0) {
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return;
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}
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//div[0].innerHTML = '';
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var nodes = cluster.nodes(packages.root(classes)),
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links = packages.imports(nodes),
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splines = bundle(links);
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var path = svg.selectAll("path.link")
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.data(links)
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.enter().append("svg:path")
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.attr("class", function(d) { return "link source-" + sanitize(d.source.key) + " target-" + sanitize(d.target.key); })
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.attr("d", function(d, i) { return line(splines[i]); });
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svg.selectAll("g.node")
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.data(nodes.filter(function(n) { return !n.children; }))
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.enter().append("svg:g")
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.attr("class", "node")
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.attr("id", function(d) { return "node-" + sanitize(d.key); })
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.attr("transform", function(d) { return "rotate(" + (d.x - 90) + ")translate(" + d.y + ")"; })
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.append("svg:text")
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.attr("dx", function(d) { return d.x < 180 ? 8 : -8; })
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.attr("dy", ".31em")
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.attr("text-anchor", function(d) { return d.x < 180 ? "start" : "end"; })
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.attr("transform", function(d) { return d.x < 180 ? null : "rotate(180)"; })
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.text(function(d) { return d.key; })
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.on("mouseover", mouseover)
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.on("mouseout", mouseout);
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});
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/*
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d3.select("input[type=range]").on("change", function() {
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line.tension(this.value / 100);
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path.attr("d", function(d, i) { return line(splines[i]); });
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});
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*/
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//TODO: decide where to attach these events
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/*
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d3.select(window)
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.on("mousemove", mousemove)
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.on("mouseup", mouseup);
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*/
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function mouse(e) {
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return [e.pageX - rx, e.pageY - ry];
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}
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function mousedown() {
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m0 = mouse(d3.event);
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d3.event.preventDefault();
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}
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function mousemove() {
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if (m0) {
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var m1 = mouse(d3.event),
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dm = Math.atan2(cross(m0, m1), dot(m0, m1)) * 180 / Math.PI;
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div.style("-webkit-transform", "translate3d(0," + (ry - rx) + "px,0)rotate3d(0,0,0," + dm + "deg)translate3d(0," + (rx - ry) + "px,0)");
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}
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}
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function mouseup() {
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if (m0) {
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var m1 = mouse(d3.event),
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dm = Math.atan2(cross(m0, m1), dot(m0, m1)) * 180 / Math.PI;
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rotate += dm;
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if (rotate > 360) rotate -= 360;
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else if (rotate < 0) rotate += 360;
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m0 = null;
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div.style("-webkit-transform", "rotate3d(0,0,0,0deg)");
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svg
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.attr("transform", "translate(" + rx + "," + ry + ")rotate(" + rotate + ")")
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.selectAll("g.node text")
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.attr("dx", function(d) { return (d.x + rotate) % 360 < 180 ? 8 : -8; })
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.attr("text-anchor", function(d) { return (d.x + rotate) % 360 < 180 ? "start" : "end"; })
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.attr("transform", function(d) { return (d.x + rotate) % 360 < 180 ? null : "rotate(180)"; });
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}
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}
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function mouseover(d) {
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svg.selectAll("path.link.target-" + sanitize(d.key))
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.classed("target", true)
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.each(updateNodes("source", true));
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svg.selectAll("path.link.source-" + sanitize(d.key))
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.classed("source", true)
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.each(updateNodes("target", true));
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}
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function mouseout(d) {
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svg.selectAll("path.link.source-" + sanitize(d.key))
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.classed("source", false)
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.each(updateNodes("target", false));
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svg.selectAll("path.link.target-" + sanitize(d.key))
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.classed("target", false)
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.each(updateNodes("source", false));
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}
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function updateNodes(name, value) {
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return function(d) {
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if (value) this.parentNode.appendChild(this);
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svg.select("#node-" + sanitize(d[name].key)).classed(name, value);
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};
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}
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function cross(a, b) {
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return a[0] * b[1] - a[1] * b[0];
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}
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function dot(a, b) {
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return a[0] * b[0] + a[1] * b[1];
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}
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// compile and go!
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$compile(element.contents())(scope.$new());
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}
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};
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});
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