turftracker/frontend/node_modules/@turf/boolean-disjoint/dist/js/index.js

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var boolean_point_in_polygon_1 = __importDefault(require("@turf/boolean-point-in-polygon"));
var line_intersect_1 = __importDefault(require("@turf/line-intersect"));
var meta_1 = require("@turf/meta");
var polygon_to_line_1 = __importDefault(require("@turf/polygon-to-line"));
/**
 * Boolean-disjoint returns (TRUE) if the intersection of the two geometries is an empty set.
 *
 * @name booleanDisjoint
 * @param {Geometry|Feature<any>} feature1 GeoJSON Feature or Geometry
 * @param {Geometry|Feature<any>} feature2 GeoJSON Feature or Geometry
 * @returns {boolean} true/false
 * @example
 * var point = turf.point([2, 2]);
 * var line = turf.lineString([[1, 1], [1, 2], [1, 3], [1, 4]]);
 *
 * turf.booleanDisjoint(line, point);
 * //=true
 */
function booleanDisjoint(feature1, feature2) {
    var bool = true;
    meta_1.flattenEach(feature1, function (flatten1) {
        meta_1.flattenEach(feature2, function (flatten2) {
            if (bool === false) {
                return false;
            }
            bool = disjoint(flatten1.geometry, flatten2.geometry);
        });
    });
    return bool;
}
/**
 * Disjoint operation for simple Geometries (Point/LineString/Polygon)
 *
 * @private
 * @param {Geometry<any>} geom1 GeoJSON Geometry
 * @param {Geometry<any>} geom2 GeoJSON Geometry
 * @returns {boolean} true/false
 */
function disjoint(geom1, geom2) {
    switch (geom1.type) {
        case "Point":
            switch (geom2.type) {
                case "Point":
                    return !compareCoords(geom1.coordinates, geom2.coordinates);
                case "LineString":
                    return !isPointOnLine(geom2, geom1);
                case "Polygon":
                    return !boolean_point_in_polygon_1.default(geom1, geom2);
            }
            /* istanbul ignore next */
            break;
        case "LineString":
            switch (geom2.type) {
                case "Point":
                    return !isPointOnLine(geom1, geom2);
                case "LineString":
                    return !isLineOnLine(geom1, geom2);
                case "Polygon":
                    return !isLineInPoly(geom2, geom1);
            }
            /* istanbul ignore next */
            break;
        case "Polygon":
            switch (geom2.type) {
                case "Point":
                    return !boolean_point_in_polygon_1.default(geom2, geom1);
                case "LineString":
                    return !isLineInPoly(geom1, geom2);
                case "Polygon":
                    return !isPolyInPoly(geom2, geom1);
            }
    }
    return false;
}
// http://stackoverflow.com/a/11908158/1979085
function isPointOnLine(lineString, pt) {
    for (var i = 0; i < lineString.coordinates.length - 1; i++) {
        if (isPointOnLineSegment(lineString.coordinates[i], lineString.coordinates[i + 1], pt.coordinates)) {
            return true;
        }
    }
    return false;
}
function isLineOnLine(lineString1, lineString2) {
    var doLinesIntersect = line_intersect_1.default(lineString1, lineString2);
    if (doLinesIntersect.features.length > 0) {
        return true;
    }
    return false;
}
function isLineInPoly(polygon, lineString) {
    for (var _i = 0, _a = lineString.coordinates; _i < _a.length; _i++) {
        var coord = _a[_i];
        if (boolean_point_in_polygon_1.default(coord, polygon)) {
            return true;
        }
    }
    var doLinesIntersect = line_intersect_1.default(lineString, polygon_to_line_1.default(polygon));
    if (doLinesIntersect.features.length > 0) {
        return true;
    }
    return false;
}
/**
 * Is Polygon (geom1) in Polygon (geom2)
 * Only takes into account outer rings
 * See http://stackoverflow.com/a/4833823/1979085
 *
 * @private
 * @param {Geometry|Feature<Polygon>} feature1 Polygon1
 * @param {Geometry|Feature<Polygon>} feature2 Polygon2
 * @returns {boolean} true/false
 */
function isPolyInPoly(feature1, feature2) {
    for (var _i = 0, _a = feature1.coordinates[0]; _i < _a.length; _i++) {
        var coord1 = _a[_i];
        if (boolean_point_in_polygon_1.default(coord1, feature2)) {
            return true;
        }
    }
    for (var _b = 0, _c = feature2.coordinates[0]; _b < _c.length; _b++) {
        var coord2 = _c[_b];
        if (boolean_point_in_polygon_1.default(coord2, feature1)) {
            return true;
        }
    }
    var doLinesIntersect = line_intersect_1.default(polygon_to_line_1.default(feature1), polygon_to_line_1.default(feature2));
    if (doLinesIntersect.features.length > 0) {
        return true;
    }
    return false;
}
function isPointOnLineSegment(lineSegmentStart, lineSegmentEnd, pt) {
    var dxc = pt[0] - lineSegmentStart[0];
    var dyc = pt[1] - lineSegmentStart[1];
    var dxl = lineSegmentEnd[0] - lineSegmentStart[0];
    var dyl = lineSegmentEnd[1] - lineSegmentStart[1];
    var cross = dxc * dyl - dyc * dxl;
    if (cross !== 0) {
        return false;
    }
    if (Math.abs(dxl) >= Math.abs(dyl)) {
        if (dxl > 0) {
            return lineSegmentStart[0] <= pt[0] && pt[0] <= lineSegmentEnd[0];
        }
        else {
            return lineSegmentEnd[0] <= pt[0] && pt[0] <= lineSegmentStart[0];
        }
    }
    else if (dyl > 0) {
        return lineSegmentStart[1] <= pt[1] && pt[1] <= lineSegmentEnd[1];
    }
    else {
        return lineSegmentEnd[1] <= pt[1] && pt[1] <= lineSegmentStart[1];
    }
}
/**
 * compareCoords
 *
 * @private
 * @param {Position} pair1 point [x,y]
 * @param {Position} pair2 point [x,y]
 * @returns {boolean} true/false if coord pairs match
 */
function compareCoords(pair1, pair2) {
    return pair1[0] === pair2[0] && pair1[1] === pair2[1];
}
exports.default = booleanDisjoint;