image-js/lib/maskAnalysis/utils/getMbrAngle.js

Image processing and manipulation in JavaScript

import { toDegrees } from '../../utils/geometry/angles.js';
import { getAngle } from './getAngle.js';
const leftFirst = (mbrPoint1, mbrPoint2) => mbrPoint1.column <= mbrPoint2.column ? -1 : 1;
const topFirst = (mbrPoint1, mbrPoint2) => mbrPoint1.row >= mbrPoint2.row ? -1 : 1;
/**
 * Get the anti-clockwise angle in degrees between the MBR and a horizontal line.
 * @param mbr - MBR to process.
 * @returns The angle in degrees.
 */
export function getMbrAngle(mbr) {
    const sorted = mbr.slice();
    sorted.sort(leftFirst);
    const left = sorted.slice(0, 2);
    const right = sorted.slice(2, 4);
    left.sort(topFirst);
    right.sort(topFirst);
    const topLeft = left[0];
    const topRight = right[0];
    return -toDegrees(getAngle(topLeft, topRight));
}
//# sourceMappingURL=getMbrAngle.js.map