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@mccannf mccannf/index.html forked from mbostock/.block
Last active Aug 29, 2015

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<!DOCTYPE html>
<meta charset="utf-8">
<style>
svg {
float: left;
border-bottom: solid 1px #ccc;
border-right: solid 1px #ccc;
margin-right: -1px;
margin-bottom: -1px;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var width = 240,
height = 125,
radius = 20;
var drag = d3.behavior.drag()
.origin(function(d) { return d; })
.on("drag", dragmove);
var svg = d3.select("body").append("div").selectAll("svg")
.data(d3.range(16).map(function() { return {x: width / 2, y: height / 2}; }))
.enter().append("svg")
.attr("width", width)
.attr("height", height);
svg.append("circle")
.attr("r", radius)
.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; })
.call(drag);
function dragmove(d) {
d3.select(this)
.attr("cx", d.x = (d3.event.x < (width - radius) ? Math.max(radius,width - radius) : width / 2 ) )
.attr("cy", d.y = (d3.event.y < (height - radius) ? Math.max(radius,height - radius) : height / 2 ) );
}
</script>
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