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@tophtucker
Created October 24, 2015 22:52
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Lenticular VII

For devices with accelerometers

<!DOCTYPE html>
<html>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title></title>
<link rel="stylesheet" type="text/css" href="main.css"/>
<body>
</body>
<script src="//cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js" charset="utf-8"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js" charset="utf-8"></script>
<script src="//cdn.rawgit.com/gka/d3-jetpack/master/d3-jetpack.js" charset="utf-8"></script>
<script src="main.js" charset="utf-8"></script>
</html>
body {
padding: 0;
margin: 0;
width: 100%;
height: 100%;
}
canvas {
width: 100%;
height: 100%;
}
var gamma = 0, // - left-to-right + (radians)
beta = 0, // - back-to-front + (radians)
alpha = 0; // compass direction (radians)
if (window.DeviceOrientationEvent) {
window.addEventListener('deviceorientation', function(e) {
gamma = e.gamma * (Math.PI / 180);
beta = e.beta * (Math.PI / 180);
alpha = e.alpha * (Math.PI / 180);
});
}
function getPattern(pixelSize, bandWidth, offset, color) {
var width = height = pixelSize;
bandWidth = bandWidth % 1;
offset = offset % 1;
var pattern = document.createElement('canvas');
var ctx = pattern.getContext('2d');
pattern.setAttribute('width', width);
pattern.setAttribute('height', height);
ctx.fillStyle = color;
ctx.fillRect(offset*width, 0, bandWidth*width, height);
ctx.fillRect((offset-1)*width, 0, bandWidth*width, height);
return pattern;
}
function render(t, ctx) {
d3.select("canvas").node().setAttribute('width', innerWidth * 2);
d3.select("canvas").node().setAttribute('height', innerHeight * 2);
ctx.font = "800 " + (innerWidth/2) + "px helvetica, arial, sans-serif";
ctx.textBaseline = 'middle';
ctx.textAlign = "center";
ctx.scale(2,2);
ctx.globalCompositeOperation = "source-over";
ctx.clearRect(0,0,innerWidth,innerHeight);
ctx.fillStyle = ctx.createPattern(getPattern(10, .5, Math.sin(gamma + alpha)+1, "#000000"), "repeat");
ctx.fillRect(0,0,innerWidth,innerHeight);
ctx.fillStyle = ctx.createPattern(getPattern(9, .5, Math.cos(beta)+1, "#000000"), "repeat");
ctx.fillText("Fake", innerWidth*.5, innerHeight/2);
}
function init() {
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
canvas.setAttribute('width', innerWidth);
canvas.setAttribute('height', innerHeight);
// ctx.scale(2,2);
// Add our demo to the HTML
document.body.appendChild(canvas);
ctx.font = "800 400px helvetica, arial, sans-serif";
ctx.textBaseline = 'middle';
ctx.textAlign = "center";
d3.timer(function(t) { render(t, ctx); });
}
init();
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