PreparedLineStringIntersects.js 1.4 KB

12345678910111213141516171819202122232425262728293031323334353637
  1. import PointLocator from '../../algorithm/PointLocator'
  2. import SegmentStringUtil from '../../noding/SegmentStringUtil'
  3. import ComponentCoordinateExtracter from '../util/ComponentCoordinateExtracter'
  4. export default class PreparedLineStringIntersects {
  5. constructor() {
  6. PreparedLineStringIntersects.constructor_.apply(this, arguments)
  7. }
  8. static constructor_() {
  9. this._prepLine = null
  10. const prepLine = arguments[0]
  11. this._prepLine = prepLine
  12. }
  13. static intersects(prep, geom) {
  14. const op = new PreparedLineStringIntersects(prep)
  15. return op.intersects(geom)
  16. }
  17. isAnyTestPointInTarget(testGeom) {
  18. const locator = new PointLocator()
  19. const coords = ComponentCoordinateExtracter.getCoordinates(testGeom)
  20. for (let i = coords.iterator(); i.hasNext(); ) {
  21. const p = i.next()
  22. if (locator.intersects(p, this._prepLine.getGeometry())) return true
  23. }
  24. return false
  25. }
  26. intersects(geom) {
  27. const lineSegStr = SegmentStringUtil.extractSegmentStrings(geom)
  28. if (lineSegStr.size() > 0) {
  29. const segsIntersect = this._prepLine.getIntersectionFinder().intersects(lineSegStr)
  30. if (segsIntersect) return true
  31. }
  32. if (geom.getDimension() === 1) return false
  33. if (geom.getDimension() === 2 && this._prepLine.isAnyTargetComponentInTest(geom)) return true
  34. if (geom.getDimension() === 0) return this.isAnyTestPointInTarget(geom)
  35. return false
  36. }
  37. }