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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Mana Portal Playground</title>
<script src="js/mp/dye.js"></script>
<script src="js/mp/resource.js"></script>
</head>
<body>
<canvas id="original" width="32" height="32"></canvas>
<script>
function checkPixel( imageData, x, y, r, g, b) {
var index = (x + y * imageData.width) * 4;
var dR = imageData.data[index++] - r;
var dG = imageData.data[index++] - g;
var dB = imageData.data[index++] - b;
if (dR != 0 || dG != 0 || dB != 0) {
console.log("(" + x + ", " + y + "): " + dR + ", " + dG + "," + dB);
}
}
mp.resource.loadImage("images/channels.png", function(err, image) {
var oContext = document.getElementById("original").getContext("2d");
oContext.putImageData(image, 0, 0);
console.log("Size: " + image.width + " x " + image.height);
for (var x = 0; x != image.width; ++x) {
for (var y = 0; y != image.height; ++y) {
checkPixel(image, x, y, (~x & 1) && y, (~x & 2) && y, (~x & 4) && y);
}
}
});
</script>
</body>
</html>
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