trueGraph/TrueForce.html at master · lbondaryk/trueGraph · GitHub

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<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta content="width=device-width, initial-scale=1.0" name="viewport">
    <meta content="Force Directed Graph" name="description">
    <style>
        .node circle {
          cursor: pointer;
          stroke: #3182bd;
          stroke-width: 1.5px;
        }

        .node text {
          font: 12px sans-serif;
          pointer-events: none;
          text-anchor: middle;
        }

        line.link {
          fill: none;
          stroke: #9ecae1;
          stroke-width: 1.5px;
        }
    </style>
</head>
<body>
  <div class="trueNum" style="border: 1px solid blue; width: 600px">
    Truenumber:
    </div>
    <div class="nodeGraph" maxwidth="600" style="float: left">
    </div>

    <script src="js/d3.min.js"></script>
    <script>

    // a simple hierarchical set of nested objects and arrays where the
    // subject or hierarchical category appear in the names of the nodes,
    // properties appear in the name of the subnodes, the size is the number of times
    // referenced ? (or something else), and the color could be something else.

    var truenums =
           {
            "name": "isams-job-353",
            "children": [],
             "name": "metals",
             "children":
             [
                {
                "name": "Steel 1465",
                "children":
                    [
                        {"name": "Density", "size": 5},
                        {"name": "Coeff of Thermal Expansion", "size": 5},
                        {"name": "Electrical Resistivity", "size": 5},
                        {"name": "Melting Point", "size": 5},
                    ]
                },
                {
                "name": "Aluminum 1100",
                "children":
                    [
                        {
                         "name": "bar",
                             "children":
                             [
                                {"name": "Density", "size": 5},
                                {"name": "Coeff of Thermal Expansion", "size": 5},
                                {"name": "Melting Point", "size": 5},
                                {"name": "Thermal Conductivity", "size": 10}
                             ]
                        }
                    ]
                },
                {
                     "name": "Iron",
                     "children":
                     [
                        {"name": "Ductility", "size": 5}
                     ]
                }
             ]
            };

var width = 600;
var height = 400;
var root;

var force = d3.layout.force()
    .linkDistance(function(d){ return d.target._children? 60 : 90; })//bostok's may want to make static
    .charge(function(d){ return d.children ? -100 : -300; })
    .gravity(.05)
    .size([width, height])
    .on("tick", tick);

var svg = d3.select(".nodeGraph").append("svg")
    .attr("width", width)
    .attr("height", height);

//draw a box around the graph canvas so you can tell where the nodes
//will disappear if you drag them there
svg.append('g')
   .append('rect')
   .attr("width", width)
   .attr("height", height)
   .attr('fill', 'none')
   .style('stroke', '#000033')
   .style('stroke-width', 2);

var link = svg.selectAll(".link");
var node = svg.selectAll(".node");

function update(){

var nodes = flatten(truenums);
var links = d3.layout.tree().links(nodes);

  // Restart the force layout.
  force
      .nodes(nodes)
      .links(links)
      .start();

  // Update links.
  link = link.data(links, function(d) { return d.target.id; });

  link.exit().remove();

  link.enter().insert("line", ".node")
      .attr("class", "link");

  // Update nodes.
  node = node.data(nodes, function(d) { return d.id; });

  node.exit().remove();

  var nodeEnter = node.enter().append("g")
      .attr("class", "node")
      .on("click", click)
      .call(force.drag);

  var nodeCircles = nodeEnter.append("circle")
      .attr("r", function(d)
      {
        //var collapsed = d.children ? 1 : 2;
       //var nodeSize = d.size || 12;
       //d.r = collapsed*nodeSize;
       d.r = d.children ? d.children.length * 5 : 6;
       console.log('radius ', d.children, d.r);
      return d.r;
      });

 nodeCircles.transition()
      .attr("r", function(d)
                {
                  //if a node has children, draw it larger
                  return d.children ? d.children.length * 4 : (d._children ? 10 : 6);
                }
            );

  nodeEnter.append("text")
      .attr("dy", function(d) { return -d.r })
      .text(function(d) { return d.name; });

  node.select("circle")
      .style("fill", color);
} // end of update()

//I took out the cute way that Bostok calls the update function using the
// d3 json loading command.  If we brought back the idea of reading data from
// an outside file, which we likely would on the server, then we should go back
// to that original implementation see http://bl.ocks.org/mbostock/1093130
update();

function tick() {
  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 + ")"; });
}

function color(d) {
  return d._children ? "#6c91ef" // collapsed package
      : d.children ? "#c3d2f4" // expanded package
      : "#e06f6c"; // leaf node
}

// Toggle children on click.
function click(d) {
  if (d3.event.defaultPrevented) return; // ignore drag
  // if there are children, store them remove from display
  if (d.children) {
    d._children = d.children;
    d.size = d.children.length * 3;
    d.children = null;
  }
  else if (d._children)
  {
    //or bring them back
    d.children = d._children;
    d.size = d._children.length * 2;
    d._children = null;
  }
  else
  {
    //or display the truenumber because we are on a leaf node
    d3.select('.trueNum').text(d.name + ' = ' + d.size);
  }
  update();
}

// Returns a list of all nodes under the root.
function flatten(root) {
  var nodes = [], i = 0;

function recurse(node) {
    if (node.children)
      {
        node.size = node.children.reduce( function(p, v) { return p + recurse(v); }, 0);
      }
    if (!node.id) node.id = ++i;
    nodes.push(node);
    return node.size;
  }

  root.size = recurse(root);
/*
  function recurse(node) {
    if (node.children) node.children.forEach(recurse);
    if (!node.id) node.id = ++i;
    nodes.push(node);
  }

  recurse(root);
  */
  return nodes;
}

</script>
</body>
</html>