Examples of com.vividsolutions.jts.operation.polygonize.Polygonizer

Package com.vividsolutions.jts.operation.polygonize

Examples of com.vividsolutions.jts.operation.polygonize.Polygonizer

com.vividsolutions.jts.operation.polygonize.Polygonizer
Polygonizes a set of {@link Geometry}s which contain linework that represents the edges of a planar graph. All types of Geometry are accepted as input; the constituent linework is extracted as the edges to be polygonized. The processed edges must be correctly noded; that is, they must only meet at their endpoints. The Polygonizer will run on incorrectly noded input but will not form polygons from non-noded edges, and will report them as errors.
The Polygonizer reports the follow kinds of errors:
- Dangles - edges which have one or both ends which are not incident on another edge endpoint
- Cut Edges - edges which are connected at both ends but which do not form part of polygon
- Invalid Ring Lines - edges which form rings which are invalid (e.g. the component lines contain a self-intersection)
@version 1.7

    lines.add(rdr.read("LINESTRING (185 221, 88 275, 180 316)"));
    lines.add(rdr.read("LINESTRING (185 221, 292 281, 180 316)"));
    lines.add(rdr.read("LINESTRING (189 98, 83 187, 185 221)"));
    lines.add(rdr.read("LINESTRING (189 98, 325 168, 185 221)"));


    Polygonizer polygonizer = new Polygonizer();
    polygonizer.add(lines);


    Collection polys = polygonizer.getPolygons();


    System.out.println("Polygons formed (" + polys.size() + "):");
    System.out.println(polys);
  }

View Full Code Here

    assert this.gf != null : "the geometry factory can't be null"; //$NON-NLS-1$


    // use the Polygonizer to get the rings.
    List<Geometry> ringList = new ArrayList<Geometry>();
    Geometry multiLines =this.line.union();
    Polygonizer polygonizer = new Polygonizer();
    polygonizer.add(multiLines);
    Collection<Polygon> polyCollection = polygonizer.getPolygons();


    // add the rings to the ringList.
    for (Polygon pol : polyCollection) {


      Coordinate[] polCoord = pol.getExteriorRing().getCoordinates();

View Full Code Here

     */
    public static boolean isClosedLine(LineString splitLine) {


  Geometry multiLines = splitLine.union();


  Polygonizer polygonizer = new Polygonizer();
  polygonizer.add(multiLines);
  Collection<?> polyCollection = polygonizer.getPolygons();


  return polyCollection.size() != 0;
    }

View Full Code Here

     */
    private static boolean validateClosedLine( final LineString splitLine, final Geometry originalGeometry ) {


        Geometry multiLines = splitLine.union();


        Polygonizer polygonizer = new Polygonizer();
        polygonizer.add(multiLines);
        Collection<Geometry> polyCollection = polygonizer.getPolygons();


        // if any of the pieces are inside the geometry, that means the closed
        // line will end up forming new polygons, it'll produce an output.
        for( Geometry pieces : polyCollection ) {

View Full Code Here


    List<LinearRing> ringList = new ArrayList<LinearRing>();


    Geometry multiLines = line.union();


    Polygonizer polygonizer = new Polygonizer();
    polygonizer.add(multiLines);
    Collection<Polygon> polyCollection = polygonizer.getPolygons();


    // add the rings to the ringList.
    for (Polygon pol : polyCollection) {


      Coordinate[] polCoord = pol.getExteriorRing().getCoordinates();

View Full Code Here


    if (Polygon.class.equals(adaptTo)) {
      if (adaptTo.equals(geomClass)) {
        return inputGeom;
      }
      Polygonizer polygonnizer = new Polygonizer();
      polygonnizer.add(inputGeom);
      Collection<? extends Polygon> polys = polygonnizer.getPolygons();
      Polygon[] polygons = new ArrayList<Polygon>(polys).toArray(new Polygon[polys.size()]);


      if (polygons.length == 1) {
        return polygons[0];
      }

View Full Code Here

    // before create the ring, calculate the orientation of the input list.
    boolean isCCWinputList = CGAlgorithms.isCCW(inputList.toArray(new Coordinate[inputList.size()]));
    // create the rings.
    LineString inputLineString = gf.createLineString(inputList.toArray(new Coordinate[inputList.size()]));
    Geometry multiLines = inputLineString.union();
    Polygonizer polygonizer = new Polygonizer();
    polygonizer.add(multiLines);
    Collection<Polygon> polyCollection = polygonizer.getPolygons();


    // add the rings to the ringList.
    for (Polygon pol : polyCollection) {


      Coordinate[] polCoord = pol.getExteriorRing().getCoordinates();

View Full Code Here

          extRing.getCoordinates());
      Polygon solidPg = GeometryUtil.gf().createPolygon(solidRing, null);
      Geometry solidCutter = cutter.intersection(solidPg);
      Geometry solidBounds = solidRing.difference(cutter);


      Polygonizer pgzer = new Polygonizer();
      for (int i = 0, count = solidBounds.getNumGeometries(); i < count; i++) {
        pgzer.add(solidBounds.getGeometryN(i));
      }
      pgzer.add(solidCutter);
      ArrayList<Geometry> pgs = new ArrayList<Geometry>();
      for (Iterator itr = pgzer.getPolygons().iterator(); itr.hasNext();) {
        Polygon p = (Polygon) itr.next();
        pgs.add(p.intersection(pg));
      }
      split = GeometryUtil.gf().buildGeometry(pgs);
    } else {

View Full Code Here

                smooth.add(ls);
        }
        
        // apply smoothing
        LineSmoother smoother = new LineSmoother(gf);
        Polygonizer polygonizer = new Polygonizer();
        
        for (int i = 0; i < smooth.size(); i++) {
            polygonizer.add(smoother.smooth(smooth.get(i), 0.5));
        }
        polygonizer.add(keep);
        
        Collection<Polygon> polys = (Collection<Polygon>) polygonizer.getPolygons();
        poly = gf.createMultiPolygon(polys.toArray(new Polygon[polys.size()]));
        
        if(!polygonizer.getInvalidRingLines().isEmpty())
            System.err.println("invalid ring lines found!");
        if(!polygonizer.getDangles().isEmpty())
            System.err.println("dangles found!");
        if(!polygonizer.getCutEdges().isEmpty())
            System.err.println("cut edges found!");
        
        if(!poly.isValid())
            throw new RuntimeException("invalid polygon!");

View Full Code Here

    List nodedLinework = new GeometryNoder(pm).node(lines);
    // union the noded linework to remove duplicates
    Geometry nodedDedupedLinework = geomFact.buildGeometry(nodedLinework).union();
    
    // polygonize the result
    Polygonizer polygonizer = new Polygonizer();
    polygonizer.add(nodedDedupedLinework);
    Collection polys = polygonizer.getPolygons();
    
    // convert to collection for return
    Polygon[] polyArray = GeometryFactory.toPolygonArray(polys);
    return geomFact.createGeometryCollection(polyArray);
  }

View Full Code Here

0 1 2

TOP

Related Classes of com.vividsolutions.jts.operation.polygonize.Polygonizer

bs.bs2d.geom.AreaSet

com.gi.engine.geometry.GeometryToolkit

com.vividsolutions.jtsexample.operation.polygonize.PolygonizeExample

com.vividsolutions.jtstest.function.PolygonizeFunctions

com.vividsolutions.jtstest.function.PolygonOverlayFunctions

es.udig.tools.geometry.split.RingExtractorTest

org.catais.veriso.utils.SurfaceAreaBuilder

org.geotools.geometry.jts.JTS

org.geotools.process.geometry.GeometryFunctions

org.locationtech.udig.tools.geometry.internal.util.GeometryUtil

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.