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| "use strict";
|
| Object.defineProperty(exports, "__esModule", {
| value: true
| });
| exports["default"] = void 0;
|
| var _utils = require("@jimp/utils");
|
| /**
| * Apply a ordered dithering effect
| * @param {function(Error, Jimp)} cb (optional) a callback for when complete
| * @returns {Jimp} this for chaining of methods
| */
| function dither(cb) {
| var rgb565Matrix = [1, 9, 3, 11, 13, 5, 15, 7, 4, 12, 2, 10, 16, 8, 14, 6];
| this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
| var thresholdId = ((y & 3) << 2) + x % 4;
| var dither = rgb565Matrix[thresholdId];
| this.bitmap.data[idx] = Math.min(this.bitmap.data[idx] + dither, 0xff);
| this.bitmap.data[idx + 1] = Math.min(this.bitmap.data[idx + 1] + dither, 0xff);
| this.bitmap.data[idx + 2] = Math.min(this.bitmap.data[idx + 2] + dither, 0xff);
| });
|
| if ((0, _utils.isNodePattern)(cb)) {
| cb.call(this, null, this);
| }
|
| return this;
| }
|
| var _default = function _default() {
| return {
| dither565: dither,
| dither16: dither
| };
| };
|
| exports["default"] = _default;
| //# sourceMappingURL=index.js.map
|
|
