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
82 lines (81 loc) • 3.13 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
var helpers_1 = require("@turf/helpers");
var meta_1 = require("@turf/meta");
/**
* Combines a {@link FeatureCollection} of {@link Point}, {@link LineString}, or {@link Polygon} features
* into {@link MultiPoint}, {@link MultiLineString}, or {@link MultiPolygon} features.
*
* @name combine
* @param {FeatureCollection<Point|LineString|Polygon>} fc a FeatureCollection of any type
* @returns {FeatureCollection<MultiPoint|MultiLineString|MultiPolygon>} a FeatureCollection of corresponding type to input
* @example
* var fc = turf.featureCollection([
* turf.point([19.026432, 47.49134]),
* turf.point([19.074497, 47.509548])
* ]);
*
* var combined = turf.combine(fc);
*
* //addToMap
* var addToMap = [combined]
*/
function combine(fc) {
var groups = {
MultiPoint: {
coordinates: [],
properties: [],
},
MultiLineString: {
coordinates: [],
properties: [],
},
MultiPolygon: {
coordinates: [],
properties: [],
},
};
meta_1.featureEach(fc, function (feature) {
var _a, _b, _c;
var _d;
switch ((_d = feature.geometry) === null || _d === void 0 ? void 0 : _d.type) {
case "Point":
groups.MultiPoint.coordinates.push(feature.geometry.coordinates);
groups.MultiPoint.properties.push(feature.properties);
break;
case "MultiPoint":
(_a = groups.MultiPoint.coordinates).push.apply(_a, feature.geometry.coordinates);
groups.MultiPoint.properties.push(feature.properties);
break;
case "LineString":
groups.MultiLineString.coordinates.push(feature.geometry.coordinates);
groups.MultiLineString.properties.push(feature.properties);
break;
case "MultiLineString":
(_b = groups.MultiLineString.coordinates).push.apply(_b, feature.geometry.coordinates);
groups.MultiLineString.properties.push(feature.properties);
break;
case "Polygon":
groups.MultiPolygon.coordinates.push(feature.geometry.coordinates);
groups.MultiPolygon.properties.push(feature.properties);
break;
case "MultiPolygon":
(_c = groups.MultiPolygon.coordinates).push.apply(_c, feature.geometry.coordinates);
groups.MultiPolygon.properties.push(feature.properties);
break;
default:
break;
}
});
return helpers_1.featureCollection(Object.keys(groups)
.filter(function (key) {
return groups[key].coordinates.length;
})
.sort()
.map(function (key) {
var geometry = { type: key, coordinates: groups[key].coordinates };
var properties = { collectedProperties: groups[key].properties };
return helpers_1.feature(geometry, properties);
}));
}
exports.default = combine;