geolib/es/isPointInPolygon.js

Library to provide basic geospatial operations like distance calculation, decoding of sexagesimal coordinates etc.

"use strict";Object.defineProperty(exports,"__esModule",{value:true});exports.default=void 0;var _getLatitude=_interopRequireDefault(require("./getLatitude"));var _getLongitude=_interopRequireDefault(require("./getLongitude"));function _interopRequireDefault(e){return e&&e.__esModule?e:{default:e}}const isPointInPolygon=(point,polygon)=>{let isInside=false;const totalPolys=polygon.length;for(let i=-1,j=totalPolys-1;++i<totalPolys;j=i){if(((0,_getLongitude.default)(polygon[i])<=(0,_getLongitude.default)(point)&&(0,_getLongitude.default)(point)<(0,_getLongitude.default)(polygon[j])||(0,_getLongitude.default)(polygon[j])<=(0,_getLongitude.default)(point)&&(0,_getLongitude.default)(point)<(0,_getLongitude.default)(polygon[i]))&&(0,_getLatitude.default)(point)<((0,_getLatitude.default)(polygon[j])-(0,_getLatitude.default)(polygon[i]))*((0,_getLongitude.default)(point)-(0,_getLongitude.default)(polygon[i]))/((0,_getLongitude.default)(polygon[j])-(0,_getLongitude.default)(polygon[i]))+(0,_getLatitude.default)(polygon[i])){isInside=!isInside}}return isInside};var _default=exports.default=isPointInPolygon;