org.locationtech.jts.geom.MultiPoint Java Examples

/**
 * Builds a point feature from a dwg point.
 */
public SimpleFeature convertDwgPoint( String typeName, String layerName, DwgPoint point, int id ) {
    double[] p = point.getPoint();
    Point2D pto = new Point2D.Double(p[0], p[1]);

    CoordinateList coordList = new CoordinateList();
    Coordinate coord = new Coordinate(pto.getX(), pto.getY(), 0.0);
    coordList.add(coord);

    SimpleFeatureTypeBuilder b = new SimpleFeatureTypeBuilder();
    b.setName(typeName);
    b.setCRS(crs);
    b.add(THE_GEOM, MultiPoint.class);
    b.add(LAYER, String.class);
    SimpleFeatureType type = b.buildFeatureType();
    SimpleFeatureBuilder builder = new SimpleFeatureBuilder(type);
    Geometry points = gF.createMultiPoint(coordList.toCoordinateArray());
    Object[] values = new Object[]{points, layerName};
    builder.addAll(values);
    return builder.buildFeature(typeName + "." + id);
}
 

/**
 * Creates a {@link Shape} representing a {@link Geometry},
 * according to the specified PointTransformation
 * and PointShapeFactory (if relevant).
 * <p>
 * Note that Shapes do not
 * preserve information fragment_about which elements in heterogeneous collections
 * are 1D and which are 2D.
 * For example, a GeometryCollection containing a ring and a
 * disk will render as two disks if Graphics.fill is used,
 * or as two rings if Graphics.draw is used.
 * To avoid this issue use separate shapes for the components.
 *
 * @param geometry the geometry to convert
 * @return a Shape representing the geometry
 */
public DrawableShape toShape(Geometry geometry) {
    if (geometry.isEmpty())
        return new PathShape(new Path());
    else if (geometry instanceof Polygon)
        return toShape((Polygon) geometry);
    else if (geometry instanceof MultiPolygon)
        return toShape((MultiPolygon) geometry);
    else if (geometry instanceof LineString)
        return toShape((LineString) geometry);
    else if (geometry instanceof MultiLineString)
        return toShape((MultiLineString) geometry);
    else if (geometry instanceof Point)
        return toShape((Point) geometry);
    else if (geometry instanceof MultiPoint)
        return toShape((MultiPoint) geometry);
    else if (geometry instanceof GeometryCollection)
        return toShape((GeometryCollection) geometry);

    throw new IllegalArgumentException("Unrecognized Geometry class: " + geometry.getClass());
}
 

protected ObjectNode encodeGeometry(Geometry geometry, int parentSrid)
        throws JSONEncodingException {
    Preconditions.checkNotNull(geometry);
    if (geometry.isEmpty()) {
        return null;
    } else if (geometry instanceof Point) {
        return encode((Point) geometry, parentSrid);
    } else if (geometry instanceof LineString) {
        return encode((LineString) geometry, parentSrid);
    } else if (geometry instanceof Polygon) {
        return encode((Polygon) geometry, parentSrid);
    } else if (geometry instanceof MultiPoint) {
        return encode((MultiPoint) geometry, parentSrid);
    } else if (geometry instanceof MultiLineString) {
        return encode((MultiLineString) geometry, parentSrid);
    } else if (geometry instanceof MultiPolygon) {
        return encode((MultiPolygon) geometry, parentSrid);
    } else if (geometry instanceof GeometryCollection) {
        return encode((GeometryCollection) geometry, parentSrid);
    } else {
        throw new JSONEncodingException("unknown geometry type " + geometry.getGeometryType());
    }
}
 

public void write( Geometry geom, OutStream os ) throws IOException {
    buf[0] = 0x69;
    os.write(buf, 1);
    if (geom instanceof Point)
        writePoint((Point) geom, os);
    // LinearRings will be written as LineStrings
    else if (geom instanceof LineString)
        writeLineString((LineString) geom, os);
    else if (geom instanceof Polygon)
        writePolygon((Polygon) geom, os);
    else if (geom instanceof MultiPoint)
        writeGeometryCollection(WKBConstants.wkbMultiPoint, (MultiPoint) geom, os);
    else if (geom instanceof MultiLineString)
        writeGeometryCollection(WKBConstants.wkbMultiLineString, (MultiLineString) geom, os);
    else if (geom instanceof MultiPolygon)
        writeGeometryCollection(WKBConstants.wkbMultiPolygon, (MultiPolygon) geom, os);
    else if (geom instanceof GeometryCollection)
        writeGeometryCollection(WKBConstants.wkbGeometryCollection, (GeometryCollection) geom, os);
    else {
        Assert.shouldNeverReachHere("Unknown Geometry type");
    }
}
 

private byte getType(final Geometry geom) {
  if (geom instanceof Point) {
    return TWKBUtils.POINT_TYPE;
  } else if (geom instanceof LineString) {
    return TWKBUtils.LINESTRING_TYPE;
  } else if (geom instanceof Polygon) {
    return TWKBUtils.POLYGON_TYPE;
  } else if (geom instanceof MultiPoint) {
    return TWKBUtils.MULTIPOINT_TYPE;
  } else if (geom instanceof MultiLineString) {
    return TWKBUtils.MULTILINESTRING_TYPE;
  } else if (geom instanceof MultiPolygon) {
    return TWKBUtils.MULTIPOLYGON_TYPE;
  }
  return TWKBUtils.GEOMETRYCOLLECTION_TYPE;
}
 

public static void registerUDTs() {
  UDTRegistration.register(
      Geometry.class.getCanonicalName(),
      GeometryUDT.class.getCanonicalName());
  UDTRegistration.register(Point.class.getCanonicalName(), PointUDT.class.getCanonicalName());
  UDTRegistration.register(
      LineString.class.getCanonicalName(),
      LineStringUDT.class.getCanonicalName());
  UDTRegistration.register(Polygon.class.getCanonicalName(), PolygonUDT.class.getCanonicalName());

  UDTRegistration.register(
      MultiLineString.class.getCanonicalName(),
      MultiLineStringUDT.class.getCanonicalName());
  UDTRegistration.register(
      MultiPoint.class.getCanonicalName(),
      MultiPointUDT.class.getCanonicalName());
  UDTRegistration.register(
      MultiPolygon.class.getCanonicalName(),
      MultiPolygonUDT.class.getCanonicalName());
}
 

static VectorTile.Tile.GeomType toGeomType(Geometry geometry) {
    if (geometry instanceof Point) {
        return VectorTile.Tile.GeomType.POINT;
    }
    if (geometry instanceof MultiPoint) {
        return VectorTile.Tile.GeomType.POINT;
    }
    if (geometry instanceof LineString) {
        return VectorTile.Tile.GeomType.LINESTRING;
    }
    if (geometry instanceof MultiLineString) {
        return VectorTile.Tile.GeomType.LINESTRING;
    }
    if (geometry instanceof Polygon) {
        return VectorTile.Tile.GeomType.POLYGON;
    }
    if (geometry instanceof MultiPolygon) {
        return VectorTile.Tile.GeomType.POLYGON;
    }
    return VectorTile.Tile.GeomType.UNKNOWN;
}
 

public MultiPoint createRandomMultiPoint() {
    Point[] points = new Point[numGeometries];
    for (int i=0; i<numGeometries; i++) {
        points[i] = createRandomPoint();
    }
    return geometryFactory.createMultiPoint(points);
}
 

private static void writeMultiPoint(MultiPoint geometry, SliceOutput output)
{
    output.writeByte(GeometrySerializationType.MULTI_POINT.code());
    output.writeInt(EsriShapeType.MULTI_POINT.code);
    writeEnvelope(geometry, output);
    output.writeInt(geometry.getNumPoints());
    for (Coordinate coordinate : geometry.getCoordinates()) {
        writeCoordinate(coordinate, output);
    }
}
 

public void testConvexHull() throws Exception {
    String cql = "the_geom=convexHull(the_geom)";

    GeometryFactory gf = GeometryUtilities.gf();
    MultiPoint multiPoint = gf.createMultiPoint(new Coordinate[]{//
            HMTestMaps.getWestNorth(), HMTestMaps.getEastSouth(),
            HMTestMaps.getEastNorth()});
    SimpleFeatureTypeBuilder b = new SimpleFeatureTypeBuilder();
    b.setName("test");
    b.setCRS(HMTestMaps.getCrs());
    b.add("the_geom", MultiPoint.class);
    SimpleFeatureType type = b.buildFeatureType();
    SimpleFeatureBuilder builder = new SimpleFeatureBuilder(type);
    Object[] values = new Object[]{multiPoint};
    builder.addAll(values);
    SimpleFeature feature = builder.buildFeature(null);
    DefaultFeatureCollection newCollection = new DefaultFeatureCollection();
    newCollection.add(feature);

    OmsVectorReshaper reshaper = new OmsVectorReshaper();
    reshaper.inVector = newCollection;
    reshaper.pCql = cql;
    reshaper.process();
    SimpleFeatureCollection outFC = reshaper.outVector;
    FeatureIterator<SimpleFeature> featureIterator = outFC.features();
    SimpleFeature newFeature = featureIterator.next();
    Geometry geometry = (Geometry) newFeature.getDefaultGeometry();
    String geometryType = geometry.getGeometryType();
    assertTrue(geometryType.toUpperCase().equals("POLYGON"));
    featureIterator.close();
}
 

private MultiPoint readMultiPoint() throws IOException, ParseException {
    int numGeom = dis.readInt();
    Point[] geoms = new Point[numGeom];
    for( int i = 0; i < numGeom; i++ ) {
        Geometry g = readGeometry();
        if (!(g instanceof Point))
            throw new ParseException(INVALID_GEOM_TYPE_MSG + "MultiPoint");
        geoms[i] = (Point) g;
    }
    return factory.createMultiPoint(geoms);
}
 

List<Integer> commands(Geometry geometry) {
    
    if (geometry instanceof MultiLineString) {
        return commands((MultiLineString) geometry);
    }
    if (geometry instanceof Polygon) {
        return commands((Polygon) geometry);
    }
    if (geometry instanceof MultiPolygon) {
        return commands((MultiPolygon) geometry);
    }        
    
    return commands(geometry.getCoordinates(), shouldClosePath(geometry), geometry instanceof MultiPoint);
}
 

private MultiPoint readMultiPoint(
    final PrecisionReader precision,
    final byte metadata,
    final ByteBuffer input) throws IOException {
  if ((metadata & TWKBUtils.EMPTY_GEOMETRY) != 0) {
    return GeometryUtils.GEOMETRY_FACTORY.createMultiPoint();
  }
  final Coordinate[] points = precision.readPointArray(input);
  return GeometryUtils.GEOMETRY_FACTORY.createMultiPointFromCoords(points);
}
 

/**
 * Transforms the given geometry. This method delegates to one of the {@code transform(…)} methods
 * based on the type of the given geometry.
 *
 * @param  geom  the geometry to transform.
 * @return the transformed geometry.
 * @throws TransformException if an error occurred while transforming the geometry.
 */
public Geometry transform(final Geometry geom) throws TransformException {
    if (geom instanceof Point)              return transform((Point)              geom);
    if (geom instanceof MultiPoint)         return transform((MultiPoint)         geom);
    if (geom instanceof LinearRing)         return transform((LinearRing)         geom);    // Must be tested before LineString.
    if (geom instanceof LineString)         return transform((LineString)         geom);
    if (geom instanceof MultiLineString)    return transform((MultiLineString)    geom);
    if (geom instanceof Polygon)            return transform((Polygon)            geom);
    if (geom instanceof MultiPolygon)       return transform((MultiPolygon)       geom);
    if (geom instanceof GeometryCollection) return transform((GeometryCollection) geom);
    throw new IllegalArgumentException(Errors.format(Errors.Keys.UnsupportedType_1, Classes.getClass(geom)));
}
 

public Map<String, Object> convert(Geometry geometry) {
    HashMap<String, Object> builder = new HashMap<>();

    if (geometry instanceof Point) {
        builder.put(TYPE_FIELD, POINT);
        builder.put(COORDINATES_FIELD, extract((Point) geometry));
    } else if (geometry instanceof MultiPoint) {
        builder.put(TYPE_FIELD, MULTI_POINT);
        builder.put(COORDINATES_FIELD, extract((MultiPoint) geometry));
    } else if (geometry instanceof LineString) {
        builder.put(TYPE_FIELD, LINE_STRING);
        builder.put(COORDINATES_FIELD, extract((LineString) geometry));
    } else if (geometry instanceof MultiLineString) {
        builder.put(TYPE_FIELD, MULTI_LINE_STRING);
        builder.put(COORDINATES_FIELD, extract((MultiLineString) geometry));
    } else if (geometry instanceof Polygon) {
        builder.put(TYPE_FIELD, POLYGON);
        builder.put(COORDINATES_FIELD, extract((Polygon) geometry));
    } else if (geometry instanceof MultiPolygon) {
        builder.put(TYPE_FIELD, MULTI_POLYGON);
        builder.put(COORDINATES_FIELD, extract((MultiPolygon) geometry));
    } else if (geometry instanceof GeometryCollection) {
        GeometryCollection geometryCollection = (GeometryCollection) geometry;
        int size = geometryCollection.getNumGeometries();
        List<Map<String, Object>> geometries = new ArrayList<>(size);
        for (int i = 0; i < size; i++) {
            geometries.add(convert(geometryCollection.getGeometryN(i)));
        }
        builder.put(TYPE_FIELD, GEOMETRY_COLLECTION);
        builder.put(GEOMETRIES_FIELD, geometries);
    } else {
        throw new IllegalArgumentException(String.format(Locale.ENGLISH,
            "Cannot extract coordinates from geometry %s", geometry.getGeometryType()));
    }
    return Collections.unmodifiableMap(builder);
}
 

private DrawableShape toShape(MultiPoint points) {
    GeometryCollectionShape shapes = new GeometryCollectionShape();
    int numGeometries = points.getNumGeometries();
    for (int i = 0; i < numGeometries; i++) {
        Point point = (Point) points.getGeometryN(i);
        PointF viewPoint = transformPoint(point.getCoordinate());
        DrawableShape drawableShape = pointFactory.createPoint(viewPoint);
        shapes.add(drawableShape);
    }
    return shapes;
}
 

public static JtsPointIterable of(final MultiPoint src) {
    return new JtsPointIterable(new PointProvider() {
        @Override
        public int getNumPoints() {
            return src.getNumGeometries();
        }

        @Override
        public Point getPointN(int n) {
            return (Point) src.getGeometryN(n);
        }
    });
}
 

private static void writeGeometry(Geometry geometry, DynamicSliceOutput output)
{
    switch (geometry.getGeometryType()) {
        case "Point":
            writePoint((Point) geometry, output);
            break;
        case "MultiPoint":
            writeMultiPoint((MultiPoint) geometry, output);
            break;
        case "LineString":
            writePolyline(geometry, output, false);
            break;
        case "MultiLineString":
            writePolyline(geometry, output, true);
            break;
        case "Polygon":
            writePolygon(geometry, output, false);
            break;
        case "MultiPolygon":
            writePolygon(geometry, output, true);
            break;
        case "GeometryCollection":
            writeGeometryCollection(geometry, output);
            break;
        default:
            throw new IllegalArgumentException("Unsupported geometry type : " + geometry.getGeometryType());
    }
}
 

public Geometry convertSequence(Geometry geometry) {
    if (geometry instanceof Point) {
        return createPoint(((Point) geometry).getCoordinateSequence());
    } else if (geometry instanceof LinearRing) {
        return createLinearRing(((LinearRing) geometry).getCoordinates());
    } else if (geometry instanceof LineString) {
        return createLineString(((LineString) geometry).getCoordinates());
    } else if (geometry instanceof Polygon) {
        LinearRing[] linearRings = new LinearRing[((Polygon) geometry).getNumInteriorRing()];
        for (int i = 0; i < ((Polygon) geometry).getNumInteriorRing(); i++) {
            linearRings[i] = (LinearRing) convertSequence(((Polygon) geometry).getInteriorRingN(i));
        }
        return createPolygon((LinearRing) convertSequence(((Polygon) geometry).getExteriorRing()),
                linearRings);
    } else if (geometry instanceof MultiPoint) {
        return createMultiPointFromCoords(((MultiPoint) geometry).getCoordinates());
    } else if (geometry instanceof MultiLineString) {
        LineString[] lineStrings = new LineString[((MultiLineString) geometry).getNumGeometries()];
        for (int i = 0; i < ((MultiLineString) geometry).getNumGeometries(); i++) {
            lineStrings[i] = (LineString) convertSequence(((MultiLineString) geometry).getGeometryN(i));
        }
        return createMultiLineString(lineStrings);
    } else if (geometry instanceof MultiPolygon) {
        Polygon[] polygons = new Polygon[((MultiPolygon) geometry).getNumGeometries()];
        for (int i = 0; i < ((MultiPolygon) geometry).getNumGeometries(); i++) {
            polygons[i] = (Polygon) convertSequence(((MultiPolygon) geometry).getGeometryN(i));
        }
        return createMultiPolygon(polygons);
    } else if (geometry instanceof GeometryCollection) {
        Geometry[] geometries = new Geometry[((GeometryCollection) geometry).getNumGeometries()];
        for (int i = 0; i < ((GeometryCollection) geometry).getNumGeometries(); i++) {
            geometries[i] = convertSequence(((GeometryCollection) geometry).getGeometryN(i));
        }
        return createGeometryCollection(geometries);
    }
    return geometry;
}
 

/** Populate member data. */
private static void populate() {
    geometryMap.put(Point.class, GeometryTypeEnum.POINT);
    geometryMap.put(MultiPoint.class, GeometryTypeEnum.POINT);
    geometryMap.put(LineString.class, GeometryTypeEnum.LINE);
    geometryMap.put(MultiLineString.class, GeometryTypeEnum.LINE);
    geometryMap.put(Polygon.class, GeometryTypeEnum.POLYGON);
    geometryMap.put(MultiPolygon.class, GeometryTypeEnum.POLYGON);
    geometryMap.put(GridCoverage2D.class, GeometryTypeEnum.RASTER);
}
 

private void encodeMultiPointDomain(DiscreteCoverageType dct, PointValueLists pointValues)
        throws EncodingException {
    MultiPointDomainDocument mpdd = MultiPointDomainDocument.Factory.newInstance();
    DomainSetType mpdst = mpdd.addNewMultiPointDomain();
    GeometryFactory factory = pointValues.getPoints().get(0).getFactory();
    MultiPoint multiPoint = factory.createMultiPoint(pointValues.getPoints().toArray(new Point[0]));
    EncodingContext ec =
            EncodingContext.of(XmlBeansEncodingFlags.GMLID, IdGenerator.generate(multiPoint.toString()))
                    .with(XmlBeansEncodingFlags.PROPERTY_TYPE, true);
    XmlObject encodedGeometry = encodeGML(multiPoint, ec);
    mpdst.addNewAbstractGeometry().set(encodedGeometry);
    substitute(mpdst.getAbstractGeometry(), encodedGeometry);
    dct.setDomainSet(mpdst);
}
 

private void createMultiPointFromJtsGeometry(MultiPoint geom, MultiPointType xbMultiPoint, String id)
        throws EncodingException {
    for (int i = 0; i < geom.getNumGeometries(); i++) {
        Geometry geometry = geom.getGeometryN(i);
        if (geometry instanceof Point) {
            PointType pt = xbMultiPoint.addNewPointMember().addNewPoint();
            pt.setId(id + "_" + i);
            createPointFromJtsGeometry((Point) geometry, pt);
        }
    }
}
 

private String getFeatureType(Geometry geometry) {
    if (geometry instanceof Point || geometry instanceof MultiPoint) {
        return SfConstants.SAMPLING_FEAT_TYPE_SF_SAMPLING_POINT;
    } else if (geometry instanceof LineString || geometry instanceof MultiLineString) {
        return SfConstants.SAMPLING_FEAT_TYPE_SF_SAMPLING_CURVE;
    } else if (geometry instanceof Polygon || geometry instanceof MultiPolygon) {
        return SfConstants.SAMPLING_FEAT_TYPE_SF_SAMPLING_SURFACE;
    } else {
        return SfConstants.SAMPLING_FEAT_TYPE_SF_SAMPLING_FEATURE;
    }
}
 

private String getFeatTypeForGeometry(final Geometry geometry) {
    if (geometry instanceof Point || geometry instanceof MultiPoint) {
        return SfConstants.SAMPLING_FEAT_TYPE_SF_SAMPLING_POINT;
    } else if (geometry instanceof LineString || geometry instanceof MultiLineString) {
        return SfConstants.SAMPLING_FEAT_TYPE_SF_SAMPLING_CURVE;
    } else if (geometry instanceof Polygon || geometry instanceof MultiPolygon) {
        return SfConstants.SAMPLING_FEAT_TYPE_SF_SAMPLING_SURFACE;
    }
    return SfConstants.SAMPLING_FEAT_TYPE_SF_SAMPLING_FEATURE;
}
 

protected ObjectNode encode(MultiPoint geometry, int parentSrid) {
    Preconditions.checkNotNull(geometry);
    ObjectNode json = jsonFactory.objectNode();
    ArrayNode list = json.put(JSONConstants.TYPE, JSONConstants.MULTI_POINT).putArray(JSONConstants.COORDINATES);
    for (int i = 0; i < geometry.getNumGeometries(); ++i) {
        list.add(encodeCoordinates((Point) geometry.getGeometryN(i)));
    }
    encodeCRS(json, geometry, parentSrid);
    return json;
}
 

@Test
public void testMultiPointWithZCoordinate() {
    MultiPoint geometry = randomMultiPoint(EPSG_4326);
    geometry.apply(new RandomZCoordinateFilter());
    geometry.geometryChanged();
    readWriteTest(geometry);
}
 

private void writeMultiPoint(
    final MultiPoint multiPoint,
    final PrecisionWriter precision,
    final DataOutput output) throws IOException {
  precision.writePointArray(multiPoint.getCoordinates(), output);
}
 

@Override
public MultiPoint createMultiPoint(CoordinateSequence coordinates) {
    return super.createMultiPoint(convert(coordinates));
}
 

private double[][] extract(MultiPoint multiPoint) {
    return toArray(multiPoint.getCoordinates());
}
 

protected MultiPoint decodeMultiPoint(JsonNode node, GeometryFactory fac)
        throws GeoJSONDecodingException {
    Coordinate[] coordinates = decodeCoordinates(requireCoordinates(node));
    return fac.createMultiPointFromCoords(coordinates);
}