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@Snack-X

Snack-X/index.html

Last active August 29, 2015 14:04
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codegolf SE 33569 - try 1
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>35569</title>
</head>
<body>
<canvas id="cv"></canvas>
<script src="script.js"></script>
</body>
</html>
Raw
script.js
var SIZE = 1024;
var cv = document.getElementById("cv");
cv.width = SIZE;
cv.height = SIZE;
cv.style.position = "fixed";
cv.style.left = "0px";
cv.style.top = "0px";
document.body.appendChild(cv);
var ctx = cv.getContext("2d");
var image_data = ctx.getImageData(0, 0, SIZE, SIZE);
var data = image_data.data;
var x = 0, y = 0;
for(var i = 0, len = data.length ; i < len ; ) {
data[i++] = red(x, y) & 255;
data[i++] = green(x, y) & 255;
data[i++] = blue(x, y) & 255;
data[i++] = 255;
if(++x === SIZE) {
x = 0;
y++;
}
}
ctx.putImageData(image_data, 0, 0);
function red(x, y) {
return x + y;
}
function green(x, y) {
return 256 + x - y;
}
function blue(x, y) {
return x * y;
}
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