<!DOCTYPE html>
<!-- from http://bl.ocks.org/1153292 -->
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<title>Object graph example</title>
<script src="d3.v3.min.js"></script>
<style type="text/css">
path.link {
fill: none;
stroke: #666;
stroke-width: 1.5px;
}
marker#can_read {
fill: green;
}
path.link.can_read {
stroke: green;
stroke-dasharray: 0,4 1;
}
path.link.can_write {
stroke: green;
}
path.link.member_of {
stroke: blue;
stroke-dasharray: 0,4 1;
}
path.link.created {
stroke: red;
}
circle {
fill: #ccc;
stroke: #333;
stroke-width: 1.5px;
}
edgetext {
font: 12px sans-serif;
pointer-events: none;
text-align: center;
}
text {
font: 12px sans-serif;
pointer-events: none;
}
text.shadow {
stroke: #fff;
stroke-width: 3px;
stroke-opacity: .8;
}
</style>
</head>
<body>
<script type="text/javascript">
var links = [
{source: "user: customer", target: "project: customer_project", type: "can_read"},
{source: "user: import robot", target: "project: customer_project", type: "can_read"},
{source: "user: pipeline robot", target: "project: customer_project", type: "can_read"},
{source: "user: uploader", target: "collection: w3anr2hk2wgfpuo", type: "created"},
{source: "user: uploader", target: "project: customer_project", type: "created"},
{source: "collection: w3anr2hk2wgfpuo", target: "project: customer_project", type: "member_of"}
];
var nodes = {};
// Compute the distinct nodes from the links.
links.forEach(function(link) {
link.source = nodes[link.source] || (nodes[link.source] = {name: link.source});
link.target = nodes[link.target] || (nodes[link.target] = {name: link.target});
});
var w = 960,
h = 500;
var force = d3.layout.force()
.nodes(d3.values(nodes))
.links(links)
.size([w, h])
.linkDistance(250)
.charge(-300)
.on("tick", tick)
.start();
var svg = d3.select("body").append("svg:svg")
.attr("width", w)
.attr("height", h);
// Per-type markers, as they don't inherit styles.
svg.append("svg:defs").selectAll("marker")
.data(["created", "member_of", "can_read", "can_write"])
.enter().append("svg:marker")
.attr("id", String)
.attr("viewBox", "0 -5 10 10")
.attr("refX", 15)
.attr("refY", -1.5)
.attr("markerWidth", 6)
.attr("markerHeight", 6)
.attr("orient", "auto")
.append("svg:path")
.attr("d", "M0,-5L10,0L0,5");
var path = svg.append("svg:g").selectAll("path")
.data(force.links())
.enter().append("svg:path")
.attr("class", function(d) { return "link " + d.type; })
.attr("marker-end", function(d) { return "url(#" + d.type + ")"; });
var circle = svg.append("svg:g").selectAll("circle")
.data(force.nodes())
.enter().append("svg:circle")
.attr("r", 6)
.call(force.drag);
var text = svg.append("svg:g").selectAll("g")
.data(force.nodes())
.enter().append("svg:g");
// A copy of the text with a thick white stroke for legibility.
text.append("svg:text")
.attr("x", 8)
.attr("y", ".31em")
.attr("class", "shadow")
.text(function(d) { return d.name; });
text.append("svg:text")
.attr("x", 8)
.attr("y", ".31em")
.text(function(d) { return d.name; });
var edgetext = svg.append("svg:g").selectAll("g")
.data(force.links())
.enter().append("svg:g");
edgetext
.append("svg:text")
.attr("x",0)
.attr("y","-0.2em")
.text(function(d) { return d.type; });
// Use elliptical arc path segments to doubly-encode directionality.
function tick() {
path.attr("d", function(d) {
var dx = d.target.x - d.source.x,
dy = d.target.y - d.source.y,
// dr = Math.sqrt(dx * dx + dy * dy);
dr = 0;
return "M" + d.source.x + "," + d.source.y + "A" + dr + "," + dr + " 0 0,1 " + d.target.x + "," + d.target.y;
});
circle.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")";
});
text.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")";
});
edgetext.attr("transform", function(d) {
return "translate(" +
(d.source.x + d.target.x)/2 + "," +
(d.source.y + d.target.y)/2 +
")rotate(" +
(Math.atan2(d.target.y - d.source.y, d.target.x - d.source.x) * 180 / Math.PI) +
")";
});
}
</script>
</body>
</html>