jiaojing/cloudfunctions/quickstartFunctions/node_modules/@cloudbase/database/dist/esm/geo/lineString.js

import { SYMBOL_GEO_LINE_STRING } from '../helper/symbol';
import { Point } from './point';
import { isArray, isNumber } from '../utils/type';
export class LineString {
    constructor(points) {
        if (!isArray(points)) {
            throw new TypeError(`"points" must be of type Point[]. Received type ${typeof points}`);
        }
        if (points.length < 2) {
            throw new Error('"points" must contain 2 points at least');
        }
        points.forEach(point => {
            if (!(point instanceof Point)) {
                throw new TypeError(`"points" must be of type Point[]. Received type ${typeof point}[]`);
            }
        });
        this.points = points;
    }
    parse(key) {
        return {
            [key]: {
                type: 'LineString',
                coordinates: this.points.map(point => point.toJSON().coordinates)
            }
        };
    }
    toJSON() {
        return {
            type: 'LineString',
            coordinates: this.points.map(point => point.toJSON().coordinates)
        };
    }
    static validate(lineString) {
        if (lineString.type !== 'LineString' || !isArray(lineString.coordinates)) {
            return false;
        }
        for (let point of lineString.coordinates) {
            if (!isNumber(point[0]) || !isNumber(point[1])) {
                return false;
            }
        }
        return true;
    }
    static isClosed(lineString) {
        const firstPoint = lineString.points[0];
        const lastPoint = lineString.points[lineString.points.length - 1];
        if (firstPoint.latitude === lastPoint.latitude && firstPoint.longitude === lastPoint.longitude) {
            return true;
        }
    }
    get _internalType() {
        return SYMBOL_GEO_LINE_STRING;
    }
}