Examples of com.vividsolutions.jts.geom.LinearRing

com.vividsolutions.jts.geom.LinearRing
Models an OGC SFS LinearRing. A LinearRing is a LineString which is both closed and simple. In other words, the first and last coordinate in the ring must be equal, and the interior of the ring must not self-intersect. Either orientation of the ring is allowed.
A ring must have either 0 or 4 or more points. The first and last points must be equal (in 2D). If these conditions are not met, the constructors throw an {@link IllegalArgumentException} @version 1.7

    @Test
    public void testMovePointOnGeometry() throws Exception {
      GeometryFactory fac = new GeometryFactory();
      
      double[] coords = new double[]{10,10, 10,20, 10,30, 30,30, 20,30, 10,10};
    LinearRing ring = fac.createLinearRing(new PackedCoordinateSequenceFactory().create(coords , 2));
      Polygon poly = fac.createPolygon(ring, new LinearRing[0]);
      
      bb.clear();
      geom =  bb.addGeometry(poly, "poly").values().iterator().next();

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    @Test
    public void testDiffOnMultipleGeoms() throws Exception {
        handler.resetEditBlackboard();
        GeometryFactory fac=new GeometryFactory();
        LinearRing ring=fac.createLinearRing(new Coordinate[]{
                new Coordinate(0,50),
                new Coordinate(50,50),
                new Coordinate(50,55),
                new Coordinate(0,55),
                new Coordinate(0,50),

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    @Test
    public void testMultiGeometry() throws Exception {
        handler.resetEditBlackboard();
        GeometryFactory fac=new GeometryFactory();
        LinearRing ring1=fac.createLinearRing(new Coordinate[]{
                new Coordinate(0,0),
                new Coordinate(50,0),
                new Coordinate(50,10),
                new Coordinate(0,10),
                new Coordinate(0,0),
        });
        Polygon polygon1 = fac.createPolygon(ring1, new LinearRing[0]);


        LinearRing ring2=fac.createLinearRing(new Coordinate[]{
                new Coordinate(0,50),
                new Coordinate(50,50),
                new Coordinate(50,60),
                new Coordinate(0,60),
                new Coordinate(0,50),

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  List<LinearRing> rings = new GeometryList<LinearRing>();
  for (int j = 0; j < polygon.getNumInteriorRing(); j++) {


      // get an interior ring.
      LinearRing interiorRing = (LinearRing) polygon.getInteriorRingN(j);


      // add the rings that intersects with the segment.
      if (interiorRing.intersects(segment)) {
    rings.add(interiorRing);
      }
  }


  return rings;

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        // add the first coordinate has last coordinate in order to close the ring
        coordList.add(coordList.get(0));
        Coordinate[] linearRingCoords =  coordList.toArray(new Coordinate[ coordList.size() ]);
        
        GeometryFactory factory = adaptedRingSegmentList.get(0).getFactory();
        LinearRing ring = factory.createLinearRing(linearRingCoords);
       
        return ring;
    }

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        duplicated.ringSegmentAdaptedAssociation  = new LinkedHashMap<LinearRing, Map<String,LineString>>();
        
         for( Entry<LinearRing, Map<String,LineString>> ringSegmentEntry : this.ringSegmentAdaptedAssociation.entrySet() ) {
             
             LinearRing ring = ringSegmentEntry.getKey();
             
             Map<String, LineString> newSegmentMap = new LinkedHashMap<String, LineString>();
             Map<String, LineString> sourceSegmentMap = ringSegmentEntry.getValue();
             
             for( Entry<String, LineString> segmentEntry: sourceSegmentMap.entrySet() ) {

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     * @param splitLine 
     */
    private void initSegmentAssociation(final Polygon originalPolygon, final LineString splitLine){


        // Extract exterior and interior rings. The ring is exploded in its segments and added in the association
        LinearRing exteriorRing = (LinearRing)this.originalPolygon.getExteriorRing();
        Map<String, LineString> exteriorSegments = createSegmentAdaptedAssociation(exteriorRing, splitLine);
        this.ringSegmentAdaptedAssociation.put(exteriorRing, exteriorSegments);
        
        for(int i = 0; i < this.originalPolygon.getNumInteriorRing(); i++){


            LinearRing interiorRing = (LinearRing)this.originalPolygon.getInteriorRingN(i);
            
            Map<String, LineString> interiorSegments = createSegmentAdaptedAssociation(interiorRing, splitLine);
            this.ringSegmentAdaptedAssociation.put( interiorRing, interiorSegments);
        }
    }

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     * @return new instance of polygon adapted polygon
     */
    public Polygon asPolygon() {


        // makes the exterior ring using the modified segments
        LinearRing originalExteriorRing = (LinearRing) this.originalPolygon.getExteriorRing();
        
        LinearRing exteriorRing = buildAdaptedRing(originalExteriorRing);
        
        // makes the interior rings using the modified hole segments
        final Set<Entry<LinearRing, Map<String,LineString>>> entrySet = this.ringSegmentAdaptedAssociation.entrySet();
        
        LinearRing[] holes = new LinearRing[entrySet.size()-1];
        int i = 0;
        for( Entry<LinearRing, Map<String, LineString>> entry : entrySet  ) {
            
            LinearRing currentRing = entry.getKey();
            if( ! currentRing.equals(originalExteriorRing) ){
                // it is an interior ring (hole)
                LinearRing holeRing = buildAdaptedRing(currentRing);


                holes[i++] = holeRing;
            }
        }
        Polygon polygon = this.geomFactory.createPolygon(exteriorRing, holes);

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        final Map<String, LineString> exteriorAdaptedSegment = lookupRing(this.ringSegmentAdaptedAssociation, ring);
        assert exteriorAdaptedSegment != null;


        // Extracts the coordinates of the adapted segments
        List<LineString> values = new GeometryList<LineString>( exteriorAdaptedSegment.values() );
        LinearRing newRing = RingUtil.segmentListToRing( values );


        return newRing;
    }

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     * @param originalRing
     * @return the adapted ring
     */
    public LinearRing getAdaptedRingOf( LinearRing originalRing ) {
        
        LinearRing adaptedRing = buildAdaptedRing(originalRing);
        
        return adaptedRing;
    }

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