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index.html
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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<title>eko</title>
<style type="text/css">
body {
margin: 0; padding: 0;
background-color: #789;
font: 14px Helvetica, Arial, sans-serif;
}
#page {
width: 600px;
margin: 2em auto; padding: 20px 50px;
border-radius: 1em;
background-color: #fff;
}
#content {
position: relative;
}
.button {
padding: 5px 20px 5px 20px;
border-radius: 6px;
background: #3498db;
color: #ffffff;
font-size: 14px;
text-decoration: none;
}
.button:hover {
background: #3cb0fd;
text-decoration: none;
}
a:link, a:visited { color: #69c; text-decoration: none; }
@media (max-width: 700px) {
body { background-color: #fff; }
#page {
width: auto;
margin: 0 auto; padding: 1em;
border-radius: 0;
}
}
</style>
</head>
<body>
<div id="page">
<div id="content">
<input type="button" class="button" value="SFX 0" onclick="playsfx0()" />
<input type="button" class="button" value="SFX 1" onclick="playsfx1()" />
<input type="button" class="button" value="SFX 2" onclick="playsfx2()" />
<input type="button" class="button" value="SFX 3" onclick="playsfx3()" />
<input type="button" class="button" value="Music" onclick="playmusic0()" />
<input type="button" class="button" value="Stop All" onclick="stopall()" />
<br />
<br />
<canvas id="canvas" width="600" height="240" oncontextmenu="event.preventDefault()"
onmousedown="window.focus()"></canvas>
<br />
</div>
<p align="center"><a href="https://github.com/paladin-t/eko">eko</a></p>
</div>
<script src="../src/eko.js"></script>
<script src="./waveforms.js"></script>
<script type="text/javascript" charset="utf-8">
var ctx = Eko.open();
var tuner = new Eko.Tuner(4, 64, 64);
var sfx0 = [
'- e',
'Bb3 e',
'A3 e',
'Bb3 e',
'G3 e',
'A3 e',
'F3 e',
'G3 e',
'E3 e',
'F3 e',
'G3 e',
'F3 e',
'E3 e',
'F3 e',
'D3 q',
'- e',
'Bb3 s',
'A3 s',
'Bb3 e',
'G3 e',
'A3 e',
'G3 e',
'F3 e',
'G3 e',
'E3 e',
'F3 e',
'G3 e',
'F3 e',
'E3 s',
'F3 s',
'E3 e',
'D3 q'
];
var sfx1 = [
'- e',
'D4 e',
'C4 e',
'D4 e',
'Bb3 e',
'C4 e',
'A3 e',
'Bb3 e',
'G3 e',
'A3 e',
'Bb3 e',
'A3 e',
'G3 e',
'A3 e',
'F3 q',
'- e',
'D4 s',
'C4 s',
'D4 e',
'Bb3 e',
'C4 e',
'Bb3 e',
'A3 e',
'Bb3 e',
'G3 e',
'A3 e',
'Bb3 e',
'A3 e',
'G3 s',
'A3 s',
'G3 e',
'F3 q'
];
var wav2 = Eko.wavSquare;
var sfx2 = [
{
'note': 'D3 q',
'waveform': wav2
},
{
'note': '- h',
'waveform': wav2
},
{
'note': 'D3 q',
'waveform': wav2
},
{
'note': 'A2 q',
'waveform': wav2
},
{
'note': '- h',
'waveform': wav2
},
{
'note': 'A2 q',
'waveform': wav2
},
{
'note': 'Bb2 q',
'waveform': wav2
},
{
'note': '- h',
'waveform': wav2
},
{
'note': 'Bb2 q',
'waveform': wav2
},
{
'note': 'F2 h',
'waveform': wav2
},
{
'note': 'A2 h',
'waveform': wav2
}
];
var fx3 = Eko.fxArpFast;
var wav3 = Eko.wavOrgan;
var sfx3 = [
{
'note': 'C3 q',
'waveform': wav3,
'fx': fx3
},
{
'note': 'D3 q',
'waveform': wav3,
'fx': fx3
},
{
'note': 'E3 q',
'waveform': wav3,
'fx': fx3
},
{
'note': 'F3 q',
'waveform': wav3,
'fx': fx3
},
{
'note': 'G3 q',
'waveform': wav3,
'fx': fx3
},
{
'note': 'A3 q',
'waveform': wav3,
'fx': fx3
},
{
'note': 'B3 q',
'waveform': wav3,
'fx': fx3
}
];
tuner.setSfxPattern(0, sfx0);
tuner.setSfxPattern(1, sfx1);
tuner.setSfxPattern(2, sfx2);
tuner.setSfxPattern(3, sfx3);
tuner.setMusicPattern(0, [ 0, 1, 2 ]);
tuner.setSfxOptions(
0,
{
'loop': [ 0, sfx0.length ],
'staccato': 0.55
}
);
tuner.setSfxOptions(
1,
{
'loop': [ 0, sfx1.length ],
'staccato': 0.55
}
);
tuner.setSfxOptions(
2,
{
'loop': [ 0, sfx2.length ],
'staccato': 0.05,
'smoothing': 0.4
}
);
tuner.setSfxOptions(
3,
{
'loop': [ 3, 7 ],
'staccato': 0.2
}
);
var canvasCtx = document.getElementById('canvas');
canvasCtx = canvasCtx.getContext('2d');
var WIDTH = 600;
var HEIGHT = 240;
var analysers = [ ];
for (var i = 0; i < 4; ++i) {
var analyser = ctx.createAnalyser();
analyser.fftSize = 2048;
var bufferLength = analyser.frequencyBinCount;
var dataArray = new Uint8Array(bufferLength);
analyser.getByteTimeDomainData(dataArray);
canvasCtx.clearRect(0, 0, WIDTH, HEIGHT);
analysers.push([ analyser, analyser ]);
}
var colors = [ 'rgb(255, 0, 0)', 'rgb(0, 255, 0)', 'rgb(0, 0, 255)', 'rgb(38, 38, 38)' ];
function draw() {
var drawVisual = requestAnimationFrame(draw);
canvasCtx.clearRect(0, 0, WIDTH, HEIGHT);
canvasCtx.fillStyle = 'rgb(200, 200, 200)';
canvasCtx.fillRect(0, 0, WIDTH, HEIGHT);
for (var j = 0; j < analysers.length; ++j) {
var analyser = analysers[j][0];
analyser.getByteTimeDomainData(dataArray);
canvasCtx.lineWidth = 2;
canvasCtx.strokeStyle = colors[j];
canvasCtx.beginPath();
var sliceWidth = WIDTH * 1.0 / bufferLength;
var x = 0;
for (var i = 0; i < bufferLength; i++) {
var v = dataArray[i] / 128.0;
var y = v * HEIGHT / 2;
if (i === 0) {
canvasCtx.moveTo(x, y);
} else {
canvasCtx.lineTo(x, y);
}
x += sliceWidth;
}
canvasCtx.lineTo(canvas.width, canvas.height / 2);
canvasCtx.stroke();
}
}
draw();
function playsfx0() {
Eko.D('sfx0');
tuner.sfx(
0, -1, -1, -1,
{
'processor': analysers[0]
}
);
}
function playsfx1() {
Eko.D('sfx1');
tuner.sfx(
1, -1, -1, -1,
{
'processor': analysers[1]
}
);
}
function playsfx2() {
Eko.D('sfx2');
tuner.sfx(
2, -1, -1, -1,
{
'processor': analysers[2]
}
);
}
function playsfx3() {
Eko.D('sfx3');
tuner.sfx(
3, -1, -1, -1,
{
'processor': analysers[3]
}
);
}
function playmusic0() {
Eko.D('music0');
tuner.music(
0, 0, 2, analysers,
{
'onAllFinished': function () {
Eko.D('Music is finished.');
}
}
);
}
function stopall() {
Eko.D('stop all');
tuner.stop(-1);
}
</script>
</body>
</html>