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index.html
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index.html
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<!DOCTYPE html>
<html>
<head>
<title>Graph</title>
<script type='text/javascript' src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<style>
html, body, div { margin: 0; padding: 0; }
html {
width: 100%;
height: 100%;
background: black;
font-family: sans-serif;
}
body {
width: 100%;
height: 100%;
overflow: hidden;
}
#wrapper {
position: absolute;
top: 50%;
left: 50%;
}
span {
top: -50%;
left: -50%;
color: #333;
position: absolute;
display: block;
z-index: 0;
font-size: 24px;
font-family: sans-serif;
}
span.highlight {
z-index: 1;
color: red;
font-weight: bolder;
text-shadow: 0 0 2px yellow;
}
#controls {
opacity: 0.1;
position: fixed;
right: 10px;
bottom: 10px;
padding: 20px;
}
#controls:hover {
opacity: 0.8;
}
#controls .main {
display: none;
}
#controls.open {
border: 1px solid white;
border-radius: 6px;
background: rgba(0,0,0,0.7);
color: #ddd;
}
#controls.open .main {
display: block;
}
#controls.open .opener {
display: none;
}
.closer {
position: absolute;
top: 4px;
right: 4px;
padding: 0 4px 2px;
border: 1px solid gray;
color: white;
cursor: pointer;
}
.closer:hover {
border: 1px solid white;
}
.row {
color: gray;
text-align: right;
white-space: nowrap;
}
.row.buttons {
text-align: center;
}
</style>
</head>
<body>
<div id="wrapper">
<span class="highlight">➡</span>
</div>
<div id="controls">
<div class="main">
<div style="color:red; text-align: center;">Under Construction</div>
<div class="row" ><label>Speed: <input type="range" min="10" max="1000"/></label></div>
<div class="row buttons" ><button>Pause</button> <button>Step</button></div>
<div class="closer">X</div>
</div>
<div class="opener"><img src="data:image/png;base64,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"/></div>
</div>
</body>
<!-- → ↠ ⇒ -->
<script>
var t = 0, // starting t
end = Math.PI*6, // end value of t
delta = end/300, // initial guess at delta-t or step length
span = $('span'), // model span
scale = 150, // optimal scale
idealWidth = 1250, // optimal container width
idealHeight = 950; // optimal container height
var offX = span.width()/2, // center of span
offY = span.height()/2, // center of span
goal = span.width()*1.2; // target segment length
var idealAspectRatio = idealWidth/idealHeight;
var aspectRatio = $(window).width()/$(window).height();
// scale graph to fit within container
if (aspectRatio<idealAspectRatio) {
scale = scale * $(window).width()/idealWidth
} else {
scale = scale * $(window).height()/idealHeight;
}
var pause = false;
var run = function(){};
var timer = setInterval(function(){pause || run();},20);
var highlight = function(){
var it = $('.highlight').removeClass('highlight').next().addClass('highlight');
if (it.length===0) {
$('span:first').addClass('highlight')
}
};
var render = function(){
var x = 4 * Math.sin(2/3*t);
var y = 3 * Math.sin(t);
var a = Math.atan2(3 * Math.sin(t+0.001)-3 * Math.sin(t-0.001),4 * Math.sin(2/3*(t+0.001))-4 * Math.sin(2/3*(t-0.001)));
var v = 'translate('+(x*scale-offX)+'px,'+(y*scale-offY)+'px) rotate('+a+'rad) ';
span.css({
transform: v,
'-webkit-transform' : v
})
.clone()
.removeClass('highlight')
.attr('title',Math.round(t/Math.PI*1000)/1000)
.appendTo(span.parent());
var d = Math.sqrt(
Math.pow((4 * Math.sin(2/3*(t+delta))-x),2)+
Math.pow((3 * Math.sin(t+delta)-y),2)
)*scale;
delta = delta*goal/d;
t+=delta;
if (t>end) {
run = highlight;
}
};
run = render;
// ===== controls =====
$('.opener, .closer').on('click',function(){
$('#controls').toggleClass('open');
return false;
});
</script>
</html>