node-red-contrib-tak-registration/node_modules/turf-jsts/src/org/locationtech/jts/operation/valid/RepeatedPointTester.js

A Node-RED node to register to TAK and to help wrap files as datapackages to send to TAK

import LineString from '../../geom/LineString'
import Geometry from '../../geom/Geometry'
import Point from '../../geom/Point'
import Polygon from '../../geom/Polygon'
import MultiPoint from '../../geom/MultiPoint'
import GeometryCollection from '../../geom/GeometryCollection'

export default class RepeatedPointTester {
  constructor () {
    this._repeatedCoord = null
  }
  getCoordinate () {
    return this._repeatedCoord
  }
  hasRepeatedPoint () {
    if (arguments[0] instanceof Geometry) {
      const g = arguments[0]
      if (g.isEmpty()) return false
      if (g instanceof Point) return false
      else if (g instanceof MultiPoint) return false
      else if (g instanceof LineString) return this.hasRepeatedPoint(g.getCoordinates())
      else if (g instanceof Polygon) return this.hasRepeatedPoint(g)
      else if (g instanceof GeometryCollection) return this.hasRepeatedPoint(g)
      else throw new Error(g.getClass().getName())
    } else if (arguments[0] instanceof Array) {
      const coord = arguments[0]
      for (let i = 1; i < coord.length; i++) {
        if (coord[i - 1].equals(coord[i])) {
          this._repeatedCoord = coord[i]
          return true
        }
      }
      return false
    } else if (arguments[0] instanceof Polygon) {
      const p = arguments[0]
      if (this.hasRepeatedPoint(p.getExteriorRing().getCoordinates())) return true
      for (let i = 0; i < p.getNumInteriorRing(); i++) {
        if (this.hasRepeatedPoint(p.getInteriorRingN(i).getCoordinates())) return true
      }
      return false
    } else if (arguments[0] instanceof GeometryCollection) {
      const gc = arguments[0]
      for (let i = 0; i < gc.getNumGeometries(); i++) {
        const g = gc.getGeometryN(i)
        if (this.hasRepeatedPoint(g)) return true
      }
      return false
    }
  }
  interfaces_ () {
    return []
  }
  getClass () {
    return RepeatedPointTester
  }
}