Examples of com.vividsolutions.jts.noding.FastNodingValidator

com.vividsolutions.jts.noding.FastNodingValidator

Validates that a collection of {@link SegmentString}s is correctly noded. Indexing is used to improve performance. This class assumes that at least one round of noding has already been performed (which may still leave intersections, due to rounding issues). Does NOT check a-b-a collapse situations. Also does not check for endpt-interior vertex intersections. This should not be a problem, since the noders should be able to compute intersections between vertices correctly. User may either test the valid condition, or request that a {@link TopologyException} be thrown. @version 1.7

  }
  
  public static Geometry checkNoding(Geometry geom)
  {
    List segs = createSegmentStrings(geom);
    FastNodingValidator nv = new FastNodingValidator(segs);
    nv.setFindAllIntersections(true);
    nv.isValid();
    List intPts = nv.getIntersections();
    Point[] pts = new Point[intPts.size()];
    for (int i = 0; i < intPts.size(); i++) {
      Coordinate coord = (Coordinate) intPts.get(i);
      // use default factory in case intersections are not fixed
      pts[i] = FunctionsUtil.getFactoryOrDefault(null).createPoint(coord);

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Examples of com.vividsolutions.jts.noding.FastNodingValidator

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