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Equalizer
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<!DOCTYPE html> | |
<head> | |
<title>Equalizer</title> | |
<script type="text/javascript" src="http://iop.io/js/vendor/d3.v3.min.js"></script> | |
<script type="text/javascript" src="http://iop.io/js/vendor/polymer/PointerEvents/pointerevents.js"></script> | |
<script type="text/javascript" src="http://iop.io/js/vendor/polymer/PointerGestures/pointergestures.js"></script> | |
<script type="text/javascript" src="http://iop.io/js/iopctrl.js"></script> | |
<style> | |
body { | |
font: 16px arial; | |
background-color: #515151; | |
} | |
.unselectable { | |
-moz-user-select: -moz-none; | |
-khtml-user-select: none; | |
-webkit-user-select: none; | |
-ms-user-select: none; | |
user-select: none; | |
} | |
.slider { | |
font-size: 12px; | |
} | |
.slider .axis path, | |
.slider .axis line { | |
fill: none; | |
stroke: #ddd; | |
shape-rendering: crispEdges; | |
} | |
.slider .lane { | |
fill: #eee; | |
opacity: 1; | |
} | |
.slider .cursor { | |
fill: #00EEFF; | |
opacity: 1; | |
} | |
.slider .tick { | |
fill: #ddd; | |
} | |
.slider .major { | |
stroke-width: 2; | |
} | |
</style> | |
</head> | |
<body> | |
<div> | |
<span id="equalizer" touch-action="none"></span> | |
</div> | |
<script> | |
var svg = d3.select("#equalizer") | |
.append("svg:svg") | |
.attr("width", 600) | |
.attr("height", 400) | |
.append("g") | |
.attr("transform", "translate(100, 100)") | |
.attr("class", "equalizer"); | |
var leds = []; | |
var eq = svg.selectAll(".ledarray").data(d3.range(0, 500, 25)); | |
eq.enter().append("g") | |
.attr("class", "ledarray") | |
.each(function(d, i) { | |
var led = iopctrl.ledarray(); | |
led.scale().domain([0, 1]).range([200, 0]); | |
d3.select(this).attr("transform", "translate("+d+")") | |
.call(led); | |
led.value(Math.sin(Math.PI * d / 500)); | |
leds.push(led); | |
}); | |
var ctrl = iopctrl.slider() | |
.width(50) | |
.transitionDuration(5000); | |
ctrl.scale().range([0, 450]); | |
svg.append("g") | |
.attr("transform", "translate(0, 200)") | |
.attr("class", "slider") | |
.call(ctrl); | |
ctrl.onValueChanged(function(value) { | |
leds.forEach(function(led, i) { | |
leds[i].value((1 + Math.sin(Math.PI * (i / 8 - 4 * value))) / 2); | |
}) | |
}) | |
</script> | |
</body> |
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