node-red-contrib-tak-registration
Version:
A Node-RED node to register to TAK and to help wrap files as datapackages to send to TAK
52 lines (51 loc) • 2.07 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var polygon_clipping_1 = __importDefault(require("polygon-clipping"));
var invariant_1 = require("@turf/invariant");
var helpers_1 = require("@turf/helpers");
/**
* Takes two {@link (Multi)Polygon(s)} and returns a combined polygon. If the input polygons are not contiguous, this function returns a {@link MultiPolygon} feature.
*
* @name union
* @param {Feature<Polygon|MultiPolygon>} polygon1 input Polygon feature
* @param {Feature<Polygon|MultiPolygon>} polygon2 Polygon feature to difference from polygon1
* @param {Object} [options={}] Optional Parameters
* @param {Object} [options.properties={}] Translate Properties to output Feature
* @returns {Feature<(Polygon|MultiPolygon)>} a combined {@link Polygon} or {@link MultiPolygon} feature, or null if the inputs are empty
* @example
* var poly1 = turf.polygon([[
* [-82.574787, 35.594087],
* [-82.574787, 35.615581],
* [-82.545261, 35.615581],
* [-82.545261, 35.594087],
* [-82.574787, 35.594087]
* ]], {"fill": "#0f0"});
* var poly2 = turf.polygon([[
* [-82.560024, 35.585153],
* [-82.560024, 35.602602],
* [-82.52964, 35.602602],
* [-82.52964, 35.585153],
* [-82.560024, 35.585153]
* ]], {"fill": "#00f"});
*
* var union = turf.union(poly1, poly2);
*
* //addToMap
* var addToMap = [poly1, poly2, union];
*/
function union(poly1, poly2, options) {
if (options === void 0) { options = {}; }
var geom1 = invariant_1.getGeom(poly1);
var geom2 = invariant_1.getGeom(poly2);
var unioned = polygon_clipping_1.default.union(geom1.coordinates, geom2.coordinates);
if (unioned.length === 0)
return null;
if (unioned.length === 1)
return helpers_1.polygon(unioned[0], options.properties);
else
return helpers_1.multiPolygon(unioned, options.properties);
}
exports.default = union;