| 1 | <!DOCTYPE html>
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| 2 | <html>
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| 3 | <head>
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| 4 | <title>Jimp browser example 1</title>
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| 5 | </head>
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| 6 | <body>
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| 7 |
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| 8 | <script src="../lib/jimp.min.js"></script>
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| 9 | <script>
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| 10 | function dropShadow(x, y, b, a) {
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| 11 | var img = new Jimp(
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| 12 | this.bitmap.width + Math.abs(x * 2) + b * 2,
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| 13 | this.bitmap.height + Math.abs(y * 2) + b * 2
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| 14 | );
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| 15 | var orig = this.clone();
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| 16 | this.scan(
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| 17 | 0,
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| 18 | 0,
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| 19 | this.bitmap.width,
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| 20 | this.bitmap.height,
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| 21 | function (x, y, idx) {
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| 22 | this.bitmap.data[idx + 0] = 0;
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| 23 | this.bitmap.data[idx + 1] = 0;
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| 24 | this.bitmap.data[idx + 2] = 0;
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| 25 | this.bitmap.data[idx + 3] = this.bitmap.data[idx + 3] * a;
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| 26 | }
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| 27 | );
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| 28 |
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| 29 |
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| 30 | var x1 = Math.max(x * -1, 0) + b;
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| 31 | var y1 = Math.max(y * -1, 0) + b;
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| 32 | img.composite(this, x1, y1);
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| 33 | img.blur(b);
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| 34 | img.composite(orig, x1 - x, y1 - y);
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| 35 |
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| 36 | return img;
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| 37 | }
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| 38 | Jimp.read("dice.png").then(function (img) {
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| 39 | console.log(img.getMIME(), img.getExtension());
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| 40 | var img = dropShadow.call(img, 20, 20, 20, 0.3);
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| 41 | img.getBase64(Jimp.AUTO, function (err, src) {
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| 42 | var img = document.createElement("img");
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| 43 | img.setAttribute("src", src);
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| 44 | document.body.appendChild(img);
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| 45 | });
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| 46 | });
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| 47 | </script>
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| 48 | </body>
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| 49 | </html>
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