<!DOCTYPE html>
<html>
<head>
<title>Jimp browser example 1</title>
</head>
<body>
<!-- Demonstrates loading a local file using Jimp on the main thread -->
<script src="../lib/jimp.min.js"></script>
<script>
function dropShadow(x, y, b, a) {
var img = new Jimp(this.bitmap.width + Math.abs(x*2) + (b*2), this.bitmap.height + Math.abs(y*2) + (b*2));
var orig = this.clone();
this.scan(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
this.bitmap.data[ idx + 0 ] = 0;
this.bitmap.data[ idx + 1 ] = 0;
this.bitmap.data[ idx + 2 ] = 0;
this.bitmap.data[ idx + 3 ] = this.bitmap.data[ idx + 3 ] * a;
});
// this.resize(this.bitmap.width + Math.abs(x) + b, this.bitmap.height + Math.abs(y) + b);
var x1 = Math.max(x * -1, 0) + b;
var y1 = Math.max(y * -1, 0) + b;
img.composite(this, x1, y1);
img.blur(b);
img.composite(orig, x1 - x, y1 - y);
//img.autocrop();
return img;
}
Jimp.read("dice.png").then(function (img) {
console.log(img.getMIME(), img.getExtension());
var img = dropShadow.call(img, 20, 20, 20, 0.3)
img.getBase64(Jimp.AUTO, function (err, src) {
var img = document.createElement("img");
img.setAttribute("src", src);
document.body.appendChild(img);
});
});
</script>
</body>
</html>