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
61 lines (60 loc) • 2.3 kB
JavaScript
import Location from '../../geom/Location'
import Geometry from '../../geom/Geometry'
import hasInterface from '../../../../../hasInterface'
import GeometryFactory from '../../geom/GeometryFactory'
import Coordinate from '../../geom/Coordinate'
import IllegalArgumentException from '../../../../../java/lang/IllegalArgumentException'
import Polygonal from '../../geom/Polygonal'
import IndexedPointInAreaLocator from '../../algorithm/locate/IndexedPointInAreaLocator'
import GeometricShapeBuilder from '../GeometricShapeBuilder'
export default class RandomPointsBuilder extends GeometricShapeBuilder {
constructor() {
super()
RandomPointsBuilder.constructor_.apply(this, arguments)
}
static constructor_() {
this._maskPoly = null
this._extentLocator = null
if (arguments.length === 0) {
GeometricShapeBuilder.constructor_.call(this, new GeometryFactory())
} else if (arguments.length === 1) {
const geomFact = arguments[0]
GeometricShapeBuilder.constructor_.call(this, geomFact)
}
}
getGeometry() {
const pts = new Array(this._numPts).fill(null)
let i = 0
while (i < this._numPts) {
const p = this.createRandomCoord(this.getExtent())
if (this._extentLocator !== null && !this.isInExtent(p)) continue
pts[i++] = p
}
return this._geomFactory.createMultiPointFromCoords(pts)
}
createRandomCoord(env) {
const x = env.getMinX() + env.getWidth() * Math.random()
const y = env.getMinY() + env.getHeight() * Math.random()
return this.createCoord(x, y)
}
isInExtent(p) {
if (this._extentLocator !== null) return this._extentLocator.locate(p) !== Location.EXTERIOR
return this.getExtent().contains(p)
}
setExtent() {
if (arguments.length === 1 && arguments[0] instanceof Geometry) {
const mask = arguments[0]
if (!hasInterface(mask, Polygonal)) throw new IllegalArgumentException('Only polygonal extents are supported')
this._maskPoly = mask
this.setExtent(mask.getEnvelopeInternal())
this._extentLocator = new IndexedPointInAreaLocator(mask)
} else {
return super.setExtent.apply(this, arguments)
}
}
createCoord(x, y) {
const pt = new Coordinate(x, y)
this._geomFactory.getPrecisionModel().makePrecise(pt)
return pt
}
}