image-js/lib/filters/or.js

Image processing and manipulation in JavaScript

import { maskToOutputMask } from '../utils/getOutputImage.js';
/**
 * Perform an OR operation on two masks.
 * @param mask - First mask.
 * @param otherMask - Second mask.
 * @param options - Or options.
 * @returns OR of the two masks.
 */
export function or(mask, otherMask, options) {
    const newMask = maskToOutputMask(mask, options);
    if (mask.width !== otherMask.width || mask.height !== otherMask.height) {
        throw new RangeError('both masks must have the same size');
    }
    for (let i = 0; i < newMask.size; i++) {
        if (mask.getBitByIndex(i) || otherMask.getBitByIndex(i)) {
            newMask.setBitByIndex(i, 1);
        }
        else {
            newMask.setBitByIndex(i, 0);
        }
    }
    return newMask;
}
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