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 dtoLinearRingToJts() throws GeomajasException {
    // Test DTO LinearRing to JTS:
    LinearRing linearRing = (LinearRing) converter.toInternal(createDtoLinearRing());
    Assert.assertEquals(dtoC3.getX(), linearRing.getCoordinateN(2).x);
  }

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    return factory.createLinearRing(new com.vividsolutions.jts.geom.Coordinate[] { jtsC1, jtsC2, jtsC3, jtsC4,
        jtsC1 });
  }


  private Polygon createJtsPolygon() {
    LinearRing shell = factory.createLinearRing(new com.vividsolutions.jts.geom.Coordinate[] { jtsC1, jtsC2, jtsC3,
        jtsC4, jtsC1 });
    LinearRing hole = factory.createLinearRing(new com.vividsolutions.jts.geom.Coordinate[] { jtsC5, jtsC6, jtsC7,
        jtsC8, jtsC5 });
    return factory.createPolygon(shell, new LinearRing[] { hole });
  }

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        jtsC8 });
    return factory.createMultiLineString(new LineString[] { l1, l2 });
  }


  private MultiPolygon createJtsMultiPolygon() {
    LinearRing shell = factory.createLinearRing(new com.vividsolutions.jts.geom.Coordinate[] { jtsC1, jtsC2, jtsC3,
        jtsC4, jtsC1 });
    LinearRing hole = factory.createLinearRing(new com.vividsolutions.jts.geom.Coordinate[] { jtsC5, jtsC6, jtsC7,
        jtsC8, jtsC5 });
    Polygon polygon1 = factory.createPolygon(shell, new LinearRing[] {});
    Polygon polygon2 = factory.createPolygon(shell, new LinearRing[] { hole });
    return factory.createMultiPolygon(new Polygon[] { polygon1, polygon2 });
  }

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    GeometrySerializer ser = new GeometrySerializer();
    GeometryFactory factory = new GeometryFactory(new PrecisionModel(100.0), 31300);
    CoordinateArraySequence coords = new CoordinateArraySequence(new Coordinate[] {
        new Coordinate(12.0, 34.23), new Coordinate(12.000, 54.555), new Coordinate(7, 8),
        new Coordinate(12.0, 34.23)});
    LinearRing ring = new LinearRing(coords, factory);
    Polygon p = new Polygon(ring, new LinearRing[] {}, factory);
    JSONObject jo = (JSONObject) ser.marshall(null, p);
    assertEquals("Polygon", jo.get("type").toString());
    assertEquals("[]", jo.get("holes").toString());
    assertEquals("31300", jo.get("srid").toString());

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    GeometrySerializer ser = new GeometrySerializer();
    GeometryFactory factory = new GeometryFactory(new PrecisionModel(100.0), 31300);
    CoordinateArraySequence coords = new CoordinateArraySequence(new Coordinate[] {
        new Coordinate(12.0, 34.23), new Coordinate(12.000, 54.555), new Coordinate(7, 8),
        new Coordinate(12.0, 34.23)});
    LinearRing ring = new LinearRing(coords, factory);
    Polygon p = new Polygon(ring, new LinearRing[] {}, factory);
    MultiPolygon m = new MultiPolygon(new Polygon[] {p}, factory);
    JSONObject jo = (JSONObject) ser.marshall(null, m);
    assertEquals("MultiPolygon", jo.get("type").toString());
    assertEquals("31300", jo.get("srid").toString());

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    request.setRatio(0.5f);
    request.setLayerIds(new String[] {LAYER_ID});


    // create a rectangle that overlaps 50 %
    GeometryFactory factory = new GeometryFactory();
    LinearRing half1 = factory.createLinearRing(new Coordinate[] {new Coordinate(0, 0), new Coordinate(1, 0),
        new Coordinate(1, 0.5), new Coordinate(0, 0.5), new Coordinate(0, 0)});
    Polygon polygon = factory.createPolygon(half1, null);
    request.setLocation(converter.toDto(polygon));


    // execute

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    request.setRatio(0.5f);
    request.setLayerIds(new String[] {LAYER_ID});


    // create a rectangle that overlaps 49 %
    GeometryFactory factory = new GeometryFactory();
    LinearRing half1 = factory.createLinearRing(new Coordinate[] {new Coordinate(0, 0), new Coordinate(1, 0),
        new Coordinate(1, 0.49), new Coordinate(0, 0.49), new Coordinate(0, 0)});
    Polygon polygon = factory.createPolygon(half1, null);
    request.setLocation(converter.toDto(polygon));


    // execute

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        geometry = factory.createLineString(getCoordinates(linestring.getCoordinates()));
      }
    } else if (geom instanceof PolygonTypeInfo) {
      PolygonTypeInfo polygon = (PolygonTypeInfo) geom;
      OuterBoundaryIsInfo outer = polygon.getOuterBoundaryIs();
      LinearRing shell = toLinearRing(factory, outer.getLinearRing());
      LinearRing[] holes = new LinearRing[polygon.getInnerBoundaryIList().size()];
      int i = 0;
      for (InnerBoundaryIsInfo inner : polygon.getInnerBoundaryIList()) {
        holes[i++] = toLinearRing(factory, inner.getLinearRing());
      }

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    }
    return geometry;
  }


  private LinearRing toLinearRing(GeometryFactory factory, LinearRingTypeInfo linearRing) {
    LinearRing ring = null;
    if (linearRing.ifCoordList()) {
      ring = factory.createLinearRing(getCoordinates(linearRing.getCoordList()));
    } else if (linearRing.ifCoordinates()) {
      ring = factory.createLinearRing(getCoordinates(linearRing.getCoordinates()));
    }

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    } else if (Geometry.LINEAR_RING.equals(geometryType)) {
      jts = factory.createLinearRing(convertCoordinates(geometry));
    } else if (Geometry.LINE_STRING.equals(geometryType)) {
      jts = factory.createLineString(convertCoordinates(geometry));
    } else if (Geometry.POLYGON.equals(geometryType)) {
      LinearRing exteriorRing = (LinearRing) toInternal(geometry.getGeometries()[0]);
      LinearRing[] interiorRings = new LinearRing[geometry.getGeometries().length - 1];
      for (int i = 0; i < interiorRings.length; i++) {
        interiorRings[i] = (LinearRing) toInternal(geometry.getGeometries()[i + 1]);
      }
      jts = factory.createPolygon(exteriorRing, interiorRings);

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