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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Mouse</title>
<link rel="stylesheet" type="text/css" href="../../css/styles.css"/>
<script type="text/javascript" src="../../lib/d3.js"></script>
<style type="text/css">
html, body {
height: 100%;
}
body {
margin: 0;
}
svg {
cursor: pointer;
width: 100%;
height: 100%;
}
circle {
fill: none;
stroke: steelblue;
}
</style>
</head>
<body>
<script type="text/javascript">
var r = 400;
var svg = d3.select("body")
.append("svg");
var positionLabel = svg.append("text")
.attr("x", 10)
.attr("y", 30);
svg.on("mousemove", function () { //<-A
printPosition();
});
function printPosition() { //<-B
var position = d3.mouse(svg.node()); //<-C
positionLabel.text(position);
}
svg.on("click", function () { //<-D
for (var i = 1; i < 5; ++i) {
var position = d3.mouse(svg.node());
var circle = svg.append("circle")
.attr("cx", position[0])
.attr("cy", position[1])
.attr("r", 0)
.style("stroke-width", 5 / (i))
.transition()
.delay(Math.pow(i, 2.5) * 50)
.duration(2000)
.ease('quad-in')
.attr("r", r)
.style("stroke-opacity", 0)
.each("end", function () {
d3.select(this).remove();
});
}
});
</script>
</body>
</html>
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