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<div id="controls">
<div id="loading">Loading audio..</div>
<button id="toggle_audio" class="pause"></button>
<p>Inkqualizer</p>
</div>
<div id="credits">
I don't own the audio.
</div>
<!-- HTML elements for the ink tanks -->
<div id="equalizer_container">
<div class="ink_tank first">
<div class="ink orange">
<div class="ink_surface"></div>
<div class="ink_empty"></div>
</div>
</div>
<div class="ink_tank">
<div class="ink yellow">
<div class="ink_surface"></div>
<div class="ink_empty"></div>
</div>
</div>
<div class="ink_tank">
<div class="ink green">
<div class="ink_surface"></div>
<div class="ink_empty"></div>
</div>
</div>
<div class="ink_tank">
<div class="ink purple">
<div class="ink_surface"></div>
<div class="ink_empty"></div>
</div>
</div>
<div class="ink_tank">
<div class="ink magenta">
<div class="ink_surface"></div>
<div class="ink_empty"></div>
</div>
</div>
</div>
@font-face{
font-family: 'Splatoon';
src: url('//s.cdpn.io/12109/Splatoon.eot');
src: url('//s.cdpn.io/12109/Splatoon.eot?#iefix') format('embedded-opentype'),
url('//s.cdpn.io/12109/Splatoon.woff2') format('woff2'),
url('//s.cdpn.io/12109/Splatoon.woff') format('woff'),
url('//s.cdpn.io/12109/Splatoon.ttf') format('truetype'),
url('//s.cdpn.io/12109/Splatoon.svg#Splatoon') format('svg');
font-weight: normal;
font-style: normal;
}
body{
background:#1f1f38;
overflow:hidden;
}
*{font-family: 'Splatoon', Arial;
font-weight: normal;
font-size:34px;
color:#aadc00;
letter-spacing:2px;
}
#equalizer_container{
width:1280px; height:720px;
background: url(https://s.cdpn.io/12109/bg.jpg) 0 0 no-repeat;
position:absolute; left:50%; top:0px; margin-left:-640px;
border-radius:16px;
box-shadow:inset 0 0 16px 5px #1f1f38;
}
.ink_tank{
width:162px; height:459px;
overflow:hidden;
position:relative; float:left;
margin-top:137px; margin-right:60px;
}
.ink_tank:before{
content:"";
width:100%;height:100%;
background: url(https://s.cdpn.io/12109/ink_tank.png) 0 0 no-repeat;
position:absolute; left:0px; top:0px;
z-index:10;
}
.ink_tank.first{ margin-left:112px; }
.ink_tank .ink{
width:122px; height:358px;
position:absolute; left:20px; top:59px;
background: url(https://s.cdpn.io/12109/ink.png) 0 0 no-repeat;
overflow:hidden;
}
.ink.orange{ background-position:0px 0px; }
.ink.yellow{ background-position:-122px 0px; }
.ink.green{ background-position:-244px 0px; }
.ink.purple{ background-position:-366px 0px; }
.ink.magenta{ background-position:-488px 0px; }
.ink_surface{
width:122px; height:96px;
background: url(https://s.cdpn.io/12109/ink_surface.png);
background-repeat:no-repeat;
background-position:0px 0px;
position:absolute; left:0px;top:1px;
z-index:7;
transform-style: preserve-3d;
}
.ink_empty{
width:122px; height:1px;
background: #20201b;
position:absolute; left:0px;top:0px;
z-index:5;
transform-style: preserve-3d;
}
#controls{
width:1280px;height:128px;
position:absolute;
left:50%;top:570px;margin-left:-640px;
z-index:100;
text-align:center;
display:block;
}
#toggle_audio{
float:left;
width:111px; height:111px;
background:url(https://s.cdpn.io/12109/toggle_audio.png) 0 0 no-repeat;
position:absolute;right:0px;top:0px;
}
#toggle_audio.pause{
background-position:-111px 0px;
}
button{
cursor:pointer;
border:none;
outline:none;
}
button:hover{
transform: rotate(5deg) scale(1.1,1.1);
transition:transform 0.1s ease;
}
#play_splatoon_music{
width:96px;height:96px;
position:absolute;left:0px;top:10px;
border-radius:18px;
background: url(https://31.media.tumblr.com/avatar_3535825f7605_128.png) 0 0 no-repeat;
background-size:96px 96px;
}
#play_beat_loop{
width:96px;height:96px;
position:absolute;left:106px;top:10px;
border-radius:18px;
background: url(https://s.cdpn.io/12109/mj.png) 0 0 no-repeat;
}
#loading{
width:1280px;height:48px;line-height:32px;
color:#df36a5;
position:absolute;left:0px;top:0px;
display:none;
}
#credits{
font-family:Arial;
color:#843291;
font-size:11px;
width:100%; height:26px;
position:absolute;left:0px;bottom:0px;
text-align:center;
letter-spacing:1px;
}
#drag_drop_area{
border-radius:16px;
width:96px;height:96px;
border:3px dashed #aadc00;
position:absolute;
right:121px;top:0px;
background:#1f1f38;
box-shadow: 0 0 6px 2px transparent;
transition:all 0.1s ease;
}
#drag_drop_area:before{
content:'\2714';
font-family:Arial;
font-size:48px; line-height:96px;
width:96px;height:96px;
border-radius:16px;
position:absolute;left:0px;top:0px;
pointer-events:none;
display:none;
}
#drag_drop_area:after{
content:"Drag n drop music here!";
font-size:21px;line-height:24px;
pointer-events:none;
width:180px;height:56px;
position:absolute;left:-48px;top:-64px;
transform: rotate(-10deg);
}
#drag_drop_area:hover, #drag_drop_area:active, #drag_drop_area.drop_aware{
border-color:#fff;
background:#2e2e54;
}
#drag_drop_area.drop_animate:before{
display:block;
}
#drag_drop_area.drop_animate{
transform: scale(0.94,0.94);
box-shadow: 0 0 6px 2px rgba(170,220,0,1);
background:#2e2e54;
}
//Create the audio context
if (! window.AudioContext){
if (! window.webkitAudioContext) {
alert('no audiocontext found');
}
window.AudioContext = window.webkitAudioContext;
}
var context = new AudioContext();
var audioBuffer;
var sourceNode;
var analyser;
var javascriptNode;
function setupAudioNodes(){
//Setup a javascript node
javascriptNode = context.createScriptProcessor(2048, 1, 1);
//Connect our javascript node to the audio context destination
javascriptNode.connect(context.destination);
//Setup an analyzer
analyser = context.createAnalyser();
analyser.smoothingTimeConstant = 0.6;
analyser.fftSize = 512;
//Create a buffer source node
sourceNode = context.createBufferSource();
sourceNode.connect(analyser);
analyser.connect(javascriptNode);
sourceNode.connect(context.destination);
}
//Retrieves, loads and plays an audio URL
function loadSound(url){
$("#loading").show();
var request = new XMLHttpRequest();
request.open('GET', url, true);
request.responseType = 'arraybuffer';
//When loaded, decode the data and play it
request.onload = function(){
$("#loading").hide();
context.decodeAudioData(request.response, function(buffer){
playSound(buffer);
}, onError);
};
request.send();
}
//Gotta log those errors
function onError(e){
console.log(e);
}
var inkBarHeight = 358;
var inkBarSurfaces = undefined;
var inkBarEmpties = undefined;
//Animate our ink bars
function drawSpectrum(barsArray){
for(var i = 0; i < 5; i++){
var value = barsArray[i];
var changeInkShape = (Math.random() * 5) > 3; //Okay-ish chance of ink surface changing shape
//Lets lie a bit about our audio levels, to make the visualizaton look a bit more crazy
var newBarTop = inkBarHeight - Math.floor(((value - 140) / 112) * inkBarHeight);
//Uncomment this to get the original accurate bar levels, no lies.
//var newBarTop = inkBarHeight - Math.floor((value / 256) * inkBarHeight);
//Change the amount of ink in the tank!
$(inkBarEmpties).eq(i).css("height", newBarTop + 1);
$(inkBarSurfaces).eq(i).css("top", newBarTop);
//Change the shape of our ink surface!
if(changeInkShape){
if( $("#toggle_audio").hasClass("pause") ){
var newPosX = Math.floor(Math.random() * 1158);
$(inkBarSurfaces).eq(i).css("background-position", "-" + newPosX + "px 0px");
}
}
}
}
var splatoonURL = "https://s3-us-west-2.amazonaws.com/s.cdpn.io/12109/splatoon_bgm_loop_small.ogg";
//Start doing stuff once the page is loaded!
$(document).ready(function(){
//Prepare everything that uses the DOM
inkBarSurfaces = $("#equalizer_container .ink .ink_surface");
inkBarEmpties = $("#equalizer_container .ink .ink_empty");
$("#toggle_audio").on("click",function(el){
if($(el.target).hasClass("pause")){
sourceNode.disconnect();
}
else{
sourceNode.connect(analyser);
analyser.connect(javascriptNode);
sourceNode.connect(context.destination);
}
$(el.target).attr("class", $(el.target).hasClass("pause") ? "play":"pause");
});
//Init and load the music
setupAudioNodes();
//Analyze our sound node, using an analyzer (duh)!
javascriptNode.onaudioprocess = function(){
//var barsArray = new Uint8Array(analyser.frequencyBinCount); //256 equalizer bars by default
var barsArray = new Uint8Array(5); //5 equalizer bars
//Get the channel average
analyser.getByteFrequencyData(barsArray);
//Splat the audio spectrum into our ink tanks
drawSpectrum(barsArray);
};
loadSound(splatoonURL);
});
var bufferStarted = false;
//Lay down the beats, looped
function playSound(buffer){
sourceNode.buffer = buffer;
sourceNode.loop = true;
sourceNode.disconnect();
if(!bufferStarted){
sourceNode.start(0);
bufferStarted = true;
}
$("#toggle_audio").attr("class", "pause");
sourceNode.connect(analyser);
analyser.connect(javascriptNode);
sourceNode.connect(context.destination);
}
Also see: Tab Triggers