Examples of com.vividsolutions.jts.geom.Geometry.union()

Class com.vividsolutions.jts.geom.Geometry

Examples of com.vividsolutions.jts.geom.Geometry.union()

com.vividsolutions.jts.geom.Geometry.union()
Computes a Geometry representing all the points in this Geometry and other. @param other the Geometry with which to compute the union @return a set combining the points of this Geometry andthe points of other @throws TopologyException if a robustness error occurs @throws IllegalArgumentException if either input is a non-empty GeometryCollection

     static public Geometry union(Geometry arg0,Geometry arg1)
     {
           if (arg0 == null || arg1 == null) return null;
           Geometry _this = arg0;


           return _this.union(arg1);
     }


     static public Geometry difference(Geometry arg0,Geometry arg1)
     {
           if (arg0 == null || arg1 == null) return null;

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     */
    private boolean isWorld(Literal geometry) {
        if(geometry != null) {
            Geometry g = geometry.evaluate(null, Geometry.class);
            if(g != null) {
                return JTS.toGeometry(WORLD).equalsTopo(g.union());
            }
        }
        return false;
    }

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        Geometry result = null;
        for (Geometry g : geoms) {
            if (result == null) {
                result = g;
            } else {
                result = result.union(g);
            }
        }
        return result;
    }

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    // note the following geometry collection may be invalid (say with
    // overlapping polygons)
    final Geometry geometryCollection = factory.buildGeometry(geometries);


    return geometryCollection.union();
  }


  private static Coordinate[] getWorldCoordinates(
      final double minX,
      final double minY,

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        filter.getMinX(),
        filter.getMaxX(),
        filter.getMinY(),
        filter.getMaxY());
    if (bbox != null) {
      return bbox.union(new GeometryFactory().toGeometry(bounds));
    }
    else {
      return bbox(bounds);
    }
  }

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      return infinity();
    }
    geom = geom.buffer(filter.getDistance());


    if (bbox != null) {
      return geom.union(bbox);
    }
    else {
      return geom;
    }
  }

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                Polygon poly = JTS.toGeometry(env);
                poly.setUserData(AbstractRecordDescriptor.DEFAULT_CRS);
                if (geom == null) {
                    geom = poly;
                } else {
                    geom = geom.union(poly);
                }
            } catch (Exception e) {
                throw new IllegalArgumentException(
                        "Failed to reproject one of the bounding boxes to WGS84, "
                                + "this should never happen with valid coordinates", e);

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  public static Geometry unionUsingGeometryCollection(Geometry a, Geometry b)                 
  {   
    Geometry gc = a.getFactory().createGeometryCollection(
        new Geometry[] { a, b});
    return gc.union(); 
  }


}

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    Geometry a = reader.read("LINESTRING(0 0, 100 100)");
    Geometry b = reader.read("LINESTRING(0 100, 100 0)");
    List lineStrings = Arrays.asList(new Object[] {a, b});
    Geometry nodedLineStrings = (LineString) lineStrings.get(0);
    for (int i = 1; i < lineStrings.size(); i++) {
      nodedLineStrings = nodedLineStrings.union((LineString)lineStrings.get(i));
    }
    assertEquals("MULTILINESTRING ((0 0, 50 50), (50 50, 100 100), (0 100, 50 50), (50 50, 100 0))", nodedLineStrings.toString());
  }


  public void testQuickPolygonUnion() throws Exception {

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            this.features = features;
            Geometry union = ((Feature) features.get(0)).getGeometry();
            hashCode = ((Feature) features.get(0)).hashCode();
            for (int i = 1; i < features.size(); i++) {
                Feature feature = (Feature) features.get(i);
                union = union.union(feature.getGeometry());
                hashCode = Math.min(hashCode, feature.hashCode());
            }
            setGeometry(union);
        }
        public List getFeatures() {

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