konva
Version:
HTML5 2d canvas library.
14 lines (13 loc) • 459 B
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.Grayscale = void 0;
const Grayscale = function (imageData) {
const data = imageData.data, len = data.length;
for (let i = 0; i < len; i += 4) {
const brightness = 0.34 * data[i] + 0.5 * data[i + 1] + 0.16 * data[i + 2];
data[i] = brightness;
data[i + 1] = brightness;
data[i + 2] = brightness;
}
};
exports.Grayscale = Grayscale;