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
72 lines (70 loc) • 2.25 kB
JavaScript
import ArrayList from '../../../../../java/util/ArrayList'
export default class GeometryCombiner {
constructor() {
GeometryCombiner.constructor_.apply(this, arguments)
}
static constructor_() {
this._geomFactory = null
this._skipEmpty = false
this._inputGeoms = null
const geoms = arguments[0]
this._geomFactory = GeometryCombiner.extractFactory(geoms)
this._inputGeoms = geoms
}
static combine() {
if (arguments.length === 1) {
const geoms = arguments[0]
const combiner = new GeometryCombiner(geoms)
return combiner.combine()
} else if (arguments.length === 2) {
const g0 = arguments[0], g1 = arguments[1]
const combiner = new GeometryCombiner(GeometryCombiner.createList(g0, g1))
return combiner.combine()
} else if (arguments.length === 3) {
const g0 = arguments[0], g1 = arguments[1], g2 = arguments[2]
const combiner = new GeometryCombiner(GeometryCombiner.createList(g0, g1, g2))
return combiner.combine()
}
}
static extractFactory(geoms) {
if (geoms.isEmpty()) return null
return geoms.iterator().next().getFactory()
}
static createList() {
if (arguments.length === 2) {
const obj0 = arguments[0], obj1 = arguments[1]
const list = new ArrayList()
list.add(obj0)
list.add(obj1)
return list
} else if (arguments.length === 3) {
const obj0 = arguments[0], obj1 = arguments[1], obj2 = arguments[2]
const list = new ArrayList()
list.add(obj0)
list.add(obj1)
list.add(obj2)
return list
}
}
extractElements(geom, elems) {
if (geom === null) return null
for (let i = 0; i < geom.getNumGeometries(); i++) {
const elemGeom = geom.getGeometryN(i)
if (this._skipEmpty && elemGeom.isEmpty()) continue
elems.add(elemGeom)
}
}
combine() {
const elems = new ArrayList()
for (let i = this._inputGeoms.iterator(); i.hasNext(); ) {
const g = i.next()
this.extractElements(g, elems)
}
if (elems.size() === 0) {
if (this._geomFactory !== null)
return this._geomFactory.createGeometryCollection()
return null
}
return this._geomFactory.buildGeometry(elems)
}
}