index.js•667 B
import { isNodePattern } from "@jimp/utils";
/**
* Inverts the image
* @param {function(Error, Jimp)} cb (optional) a callback for when complete
* @returns {Jimp} this for chaining of methods
*/
export default () => ({
invert(cb) {
this.scanQuiet(
0,
0,
this.bitmap.width,
this.bitmap.height,
function (x, y, idx) {
this.bitmap.data[idx] = 255 - this.bitmap.data[idx];
this.bitmap.data[idx + 1] = 255 - this.bitmap.data[idx + 1];
this.bitmap.data[idx + 2] = 255 - this.bitmap.data[idx + 2];
}
);
if (isNodePattern(cb)) {
cb.call(this, null, this);
}
return this;
},
});