function getOffset( el ) { var _x = 0; var _y = 0; while( el && !isNaN( el.offsetLeft ) && !isNaN( el.offsetTop ) ) { _x += el.offsetLeft - el.scrollLeft; _y += el.offsetTop - el.scrollTop; el = el.offsetParent; } return { top: _y, left: _x }; } var offset = getOffset(document.getElementById('chart')); var w = window.innerWidth - offset.left, h = window.innerHeight - offset.top, fill = d3.scale.category20(); var cp = d3.select("#chart").append("div") .attr("id", "controlpanel"); var btns = cp.append("div") .attr("class", "btn-group") .attr("data-toggle", "buttons-radio"); btns.append("button") .attr("class", "btn active left") .attr("value", "all") .text("Everything") .on("click", update_graph); btns.append("button") .attr("class", "btn right") .attr("value", "mesh") .text("Mesh only") .on("click", update_graph); function update_graph() { var value = jQuery(this).val() render_graph(value); } render_graph("all"); function render_graph(type) { d3.select("#chart svg").remove(); var vis = d3.select("#chart").append("svg") .attr("width", w) .attr("height", h); d3.json("nodes.json", function(json) { var force = d3.layout.force() .charge(-100) .gravity(0.02) .friction(0.75) .theta(0.1) .linkDistance(function (d) { return d.distance; }) .linkStrength(function (d) { return d.strength; }) .nodes(json.nodes) .links(json.links) .size([w, h]) .start();   var linkedByIndex = {};   json.links.forEach(function(d) {       linkedByIndex[d.source.index + "," + d.target.index] = 1;   }); var linkdata = json.links; if (type == "mesh") linkdata = json.links.filter( function (d) { return d.source.group != 2 && d.target.group != 2 && d.source.group != 3 && d.target.group != 3; }); var link = vis.selectAll("line.link") .data(linkdata) .enter().append("line") .attr("class", "link") .style("stroke-width", function(d) { return Math.min(1, d.strength * 2); }) .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; });     function isConnected(a, b) {         return linkedByIndex[a.index + "," + b.index] || linkedByIndex[b.index + "," + a.index] || a.index == b.index;     }  function fade(opacity) {         return function(d) {             node.style("stroke-opacity", function(o) { var connected = isConnected(d, o); if (connected && opacity != 1) d3.select(this).classed("highlight", true); else d3.select(this).classed("highlight", false);                 thisOpacity = connected ? 1 : opacity;                 this.setAttribute('fill-opacity', thisOpacity);                 return thisOpacity;             });             link.style("stroke-opacity", function(o) {                 return o.source === d || o.target === d ? 1 : opacity;             });         };     } function show_node_info(d) { if (!(typeof nodeinfo === 'undefined')) nodeinfo.remove(); nodeinfo = d3.select("#chart").append("div") .attr("id", "nodeinfo"); nodeinfo.append("h1") .text(d.name); nodeinfo.append("p") .text(d.macs); nodeinfo.append("p") .text(d.gps); } var node = vis.selectAll("svg.node") .data(json.nodes.filter(function (d) { return type != "mesh" || (d.group != 2 && d.group != 3); })) .enter().append("g") .attr("class", "node") .on("mouseover", fade(.2)) .on("mouseout", fade(1)) .on("click", show_node_info) .call(force.drag); node.append("ellipse") .attr("rx", function(d) { if (d.group == 3) return 4; else return Math.max(10, d.name.length * 5); }) .attr("ry", function(d) { if (d.group == 3) return 4; else return 10; }) .style("fill", function(d) { if (d.group == 3) return fill(d.group); else return ""; }) .style("stroke", function(d) { return fill(d.group); }); node.append("text") .attr("text-anchor", "middle") .attr("y", "4px") .text(function(d) { if (d.group == 3) return ""; else return d.name; }); node.append("title") .text(function(d) { return d.macs; }); if (type == "mesh") { var uplink_info = node.filter(function (d) { if (d.uplinks !== undefined) return d.uplinks.length > 0; else return false; }) .append("g"); uplink_info.append("rect") .attr("width", 16) .attr("height", 16) .attr("x", -8) .attr("y", -28) .attr("fill", "#fff") .attr("stroke", "#066"); uplink_info.append("text") .attr("text-anchor", "middle") .attr("y", 4 - 20) .text(function (d) {return d.uplinks.length}); } force.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("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; }); }); }); }