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pack.html
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pack.html
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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<link type="text/css" rel="stylesheet" href="style.css"/>
<script type="text/javascript" src="d3/d3.js"></script>
<script type="text/javascript" src="d3/d3.layout.js"></script>
<style type="text/css">
text {
font-size: 11px;
pointer-events: none;
}
text.parent {
fill: steelblue;
}
circle {
fill: #ccc;
stroke: #999;
pointer-events: all;
}
circle.parent {
fill: steelblue;
fill-opacity: .1;
stroke: steelblue;
}
circle.parent:hover {
stroke-width: .5px;
}
circle.child {
pointer-events: none;
}
</style>
</head>
<body>
<div id="body">
<div id="footer">
d3.layout.pack
<div class="hint">click or option-click to descend or ascend</div>
</div>
</div>
<script type="text/javascript">
var w = 1280,
h = 800,
r = 720,
x = d3.scale.linear().range([0, r]),
y = d3.scale.linear().range([0, r]),
node,
root;
var pack = d3.layout.pack()
.size([r, r])
.value(function(d) { return d.size; });
var vis = d3.select("#body").append("svg:svg")
.attr("width", w)
.attr("height", h)
.append("svg:g")
.attr("transform", "translate(" + (w - r) / 2 + "," + (h - r) / 2 + ")");
d3.json("flare.json", function(data) {
node = root = data;
var nodes = pack.nodes(root);
vis.selectAll("circle")
.data(nodes)
.enter().append("svg:circle")
.attr("class", function(d) { return d.children ? "parent" : "child"; })
.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; })
.attr("r", function(d) { return d.r; })
.on("click", function(d) { return zoom(node == d ? root : d); });
vis.selectAll("text")
.data(nodes)
.enter().append("svg:text")
.attr("class", function(d) { return d.children ? "parent" : "child"; })
.attr("x", function(d) { return d.x; })
.attr("y", function(d) { return d.y; })
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.style("opacity", function(d) { return d.r > 20 ? 1 : 0; })
.text(function(d) { return d.name; });
d3.select(window).on("click", function() { zoom(root); });
});
function zoom(d, i) {
var k = r / d.r / 2;
x.domain([d.x - d.r, d.x + d.r]);
y.domain([d.y - d.r, d.y + d.r]);
var t = vis.transition()
.duration(d3.event.altKey ? 7500 : 750);
t.selectAll("circle")
.attr("cx", function(d) { return x(d.x); })
.attr("cy", function(d) { return y(d.y); })
.attr("r", function(d) { return k * d.r; });
t.selectAll("text")
.attr("x", function(d) { return x(d.x); })
.attr("y", function(d) { return y(d.y); })
.style("opacity", function(d) { return k * d.r > 20 ? 1 : 0; });
node = d;
d3.event.stopPropagation();
}
</script>
</body>
</html>