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kurotanshi/index.html

Created October 29, 2015 03:37
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d3 元氣彈
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index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="//cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
<style type="text/css">
html, body, svg {
width: 100%; height: 100%; padding: 0; margin: 0;
}
#reset{ font-size: 1.2em; padding: 10px; margin-bottom: 1em; }
</style>
</head>
<body>
<button id="reset">reset</button>
<svg></svg>
<script>
var svg = d3.select('svg');
var dataSet = d3.range(100);
var wRange = 960, hRange = 500;
var circle = svg.selectAll("circle")
.data(dataSet)
.enter()
.append('circle')
.attr({
'width': 100,
'height': 30,
'fill': 'blue',
'fill-opacity': 0.25,
'r': function(){ return ( Math.random() * 20 ) + 5; },
'cx':function(){ return Math.floor(Math.random() * wRange); },
'cy':function(){ return Math.floor(Math.random() * hRange); }
});
var drag = d3.behavior.drag()
.on("drag", function(){
circle.transition()
.delay(function(d,i){ return i * 150; })
.attr({
'cx':d3.event.x,
'cy':d3.event.y,
'r': function(d, i){ return i * 1.1; }
});
circle.on(".drag", null);
});
circle.call(drag);
d3.select("#reset").on('click', function(){
circle.transition()
.attr({
'r': function(){ return ( Math.random() * 20 ) + 5; },
'cx':function(){ return Math.floor(Math.random() * wRange);},
'cy':function(){ return Math.floor(Math.random() * hRange);}
});
circle.call(drag);
});
</script>
</body>
</html>
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