java类com.vividsolutions.jts.geom.Coordinate的实例源码

public static List<LineString> split(LineString given, int maxPoint) {
    List<LineString> result = newArrayList();
    Coordinate[] coordinates = given.getCoordinates();
    int current = 0;
    while (current < coordinates.length) {
        int end = current + maxPoint - 1;
        if (coordinates.length - end < 2) {
            result.add(gf.createLineString(Arrays.copyOfRange(coordinates, current, coordinates.length)));
            return result;
        }
        else {
            result.add(gf.createLineString(Arrays.copyOfRange(coordinates, current, end + 1)));
            current = end;
        }
    }
    throw new IllegalStateException("Unexpected");
}

@Test
public void should_return_same_geom_if_necessary() {
    LineString linestring = linestring(
            new Coordinate(0.0, 0.0),
            new Coordinate(1.0, 0.0),
            new Coordinate(1.0, 1.0));

    List<LineString> lines = LongLineSplitter.split(linestring, 3);

    assertThat(lines).containsExactly(
            linestring(
                    new Coordinate(0.0, 0.0),
                    new Coordinate(1.0, 0.0),
                    new Coordinate(1.0, 1.0)));
    assertThat(lines).isEqualTo(LongLineSplitter.split(linestring, 4));
    assertThat(lines).isEqualTo(LongLineSplitter.split(linestring, 5));
}

private static final double[] range(Coordinate[] points, int offset, int length) {
    double minX = points[0].x;
    double maxX = points[0].x;
    double minY = points[0].y;
    double maxY = points[0].y;
    // compute the bounding coordinates (@todo: cleanup brute force)
    for (int i = 1; i < length; ++i) {
        if (points[offset + i].x < minX) {
            minX = points[offset + i].x;
        }
        if (points[offset + i].x > maxX) {
            maxX = points[offset + i].x;
        }
        if (points[offset + i].y < minY) {
            minY = points[offset + i].y;
        }
        if (points[offset + i].y > maxY) {
            maxY = points[offset + i].y;
        }
    }
    return new double[] {minX, maxX, minY, maxY};
}

/**
 * Create a Catmull-Rom spline based on the given control points.
 * The generated curve starts in the first control point and ends
 * in the last control point.
 * In addition, the curve intersects all the control points.
 * 
 * @param controlPoints  Control points of spline.
 * @param maxDist Maximum distance between points along the spline.
 * @return A Catmull-Rom spline based on the given control points.
 */
public static Spline3D createCatmullRom (Coordinate[] controlPoints, double maxDist) {
    double[] cPoints = new double[controlPoints.length*3];
    int counter = 0;
    for (int i = 0; i < controlPoints.length; i++) {
        cPoints[counter] = controlPoints[i].x;
        cPoints[counter+1] = controlPoints[i].y;
        cPoints[counter+2] = controlPoints[i].z;
        counter+=3;
    }
    int numParts = 3;
    Spline3D ret = null;
    do {
        ret = new Spline3D(new CatmullRomSpline (cPoints, numParts++).generate(), controlPoints, Spline3D.Type.SPLINE_CATMULL_ROM);
    }
    while(ret.computeMinMaxDistances()[1] > maxDist);
    return ret;

}

private void addBufferPoints(List<Coordinate> points, Quadtree tree, double lon0, double lat0, double lon1,
        double lat1, boolean addLast, boolean checkNeighbours, double bufferSize) {
    double dx = (lon0 - lon1);
    double dy = (lat0 - lat1);
    double norm_length = Math.sqrt((dx * dx) + (dy * dy));
    double scale = bufferSize /norm_length;

    double dx2 = -dy*scale;
    double dy2 = dx*scale;

    addPoint(points, tree, lon0 + dx2, lat0 + dy2, checkNeighbours);
    addPoint(points, tree, lon0 - dx2, lat0 - dy2, checkNeighbours);

    // add a middle point if two points are too far from each other
    if (norm_length > 2*bufferSize)
    {
        addPoint(points, tree, (lon0 + lon1)/2.0 + dx2, (lat0 + lat1)/2.0 + dy2, checkNeighbours);  
        addPoint(points, tree, (lon0 + lon1)/2.0 - dx2, (lat0 + lat1)/2.0 - dy2, checkNeighbours);
    }

    if (addLast) {
         addPoint(points, tree, lon1 + dx2, lat1 + dy2, checkNeighbours);
         addPoint(points, tree, lon1 - dx2, lat1 - dy2, checkNeighbours);
    } 
}

/**
 *
 * @param imagePosition
 * @param context
 */
public void mouseClicked(java.awt.Point imagePosition, OpenGLContext context) {
    if(isEditable()){
     this.selectedGeometry = null;
     GeometryFactory gf = new GeometryFactory();
     com.vividsolutions.jts.geom.Point p = gf.createPoint(new Coordinate(imagePosition.x, imagePosition.y));
     for (Geometry temp : glayer.getGeometries()) {
        if(temp instanceof Polygon){
        Coordinate[] c=DistanceOp.nearestPoints(temp, p);
        com.vividsolutions.jts.geom.Point nearest=gf.createPoint(c[0]);
          if (nearest.isWithinDistance(temp,5 * context.getZoom())) {
              this.selectedGeometry = temp;
              System.out.println(""+temp.getCoordinate().x+","+temp.getCoordinate().y);
              LayerPickedData.put(temp, glayer.getAttributes(temp));
              break;
          }
        }
     }
    }
}

/**
 *
 * @param gl
 * @param cs
 * @param width
 * @param height
 * @param x
 * @param y
 */
protected void drawPoly(GL2 gl,Coordinate[] cs,float width,float height,int x,int y,float rwidth){
    gl.glLineWidth(rwidth);
    gl.glBegin(GL.GL_LINE_STRIP);
    for (int p = 0; p < cs.length; p++) {
        double vx=(cs[p].x - x) / width;
        double vy=1 - (cs[p].y - y) / height;
        gl.glVertex2d(vx,vy);
    }

    //close polygon
    Coordinate point = cs[0];
    gl.glVertex2d((point.x - x) / width, 1 - (point.y - y) / height);
    gl.glEnd();
    gl.glFlush();
}

@Test
public void should_split_polygon_in_4() {
    Polygon polygon = polygon(
            new Coordinate(0.0, 0.0),
            new Coordinate(1.0, 0.0),
            new Coordinate(1.0, 1.0),
            new Coordinate(0.0, 1.0),
            new Coordinate(0.0, 0.0));

    List<Geometry> geoms = LargePolygonSplitter.split(polygon, 0.4);

    assertThat(geoms).extracting(Geometry::toString).containsExactly(
            "POLYGON ((0.5 0, 0 0, 0 0.5, 0.5 0.5, 0.5 0))",
            "POLYGON ((0 1, 0.5 1, 0.5 0.5, 0 0.5, 0 1))",
            "POLYGON ((1 1, 1 0.5, 0.5 0.5, 0.5 1, 1 1))",
            "POLYGON ((1 0, 0.5 0, 0.5 0.5, 1 0.5, 1 0))");
}

public Area getShape() {
    Area maskArea = new Area();
    Rectangle rect = new Rectangle(0, 0, reader.getWidth(), reader.getHeight());
    GeometryFactory gf = new GeometryFactory();
    Coordinate[] coords = new Coordinate[]{
        new Coordinate((int) rect.getMinX(), (int) rect.getMinY()),
        new Coordinate((int) rect.getMaxX(), (int) rect.getMinY()),
        new Coordinate((int) rect.getMaxX(), (int) rect.getMaxY()),
        new Coordinate((int) rect.getMinX(), (int) rect.getMaxY()),
        new Coordinate((int) rect.getMinX(), (int) rect.getMinY()),
    };
    Polygon geom = gf.createPolygon(gf.createLinearRing(coords), null);
    for (Geometry p : glayer.getGeometries()) {
        if (p.intersects(geom)) {
            int[] xPoints = new int[p.getNumPoints()];
            int[] yPoints = new int[p.getNumPoints()];
            int i = 0;
            for (Coordinate c : p.getCoordinates()) {
                xPoints[i] = (int) (c.x);
                yPoints[i++] = (int) (c.y);
            }
            maskArea.add(new Area(new java.awt.Polygon(xPoints, yPoints, p.getNumPoints())));
        }
    }
    return maskArea;
}

/**
 * Method that calculate the total length between the points of a coordinate
 * array
 * 
 * @param cArray
 *            Array of Coordinate
 * @return dLength double Value Length
 */
public static double calculateLengthWGS84(Coordinate[] cArray) {
    double length = 0;
    int nLength = cArray.length;

    if (nLength > 0) {
        Coordinate c0 = cArray[0];
        Coordinate c1 = null;
        for (int index = 1; index < nLength; index++) {
            c1 = cArray[index];

            length += calcDistHaversine(c0.x, c0.y, c1.x, c1.y);

            c0 = c1;
        }
    }
    return length;
}

public static Coordinate[] parse(String value, String separator, boolean is3D, boolean inverseXY)
{
    String[] coordValues = value.split(separator);
    Coordinate[] coords = new Coordinate[coordValues.length];

    for (int i = 0; i < coordValues.length; i++)
    {
        String[] locations = coordValues[i].split(",");
        if (inverseXY)
        {
            if (is3D && locations.length == 3)
                coords[i] = new Coordinate(Double.parseDouble(locations[1]), Double.parseDouble(locations[0]), Double.parseDouble(locations[2]));
            else
                coords[i] = new Coordinate(Double.parseDouble(locations[1]), Double.parseDouble(locations[0]));
        }
        else
        {
            if (is3D && locations.length == 3)
                coords[i] = new Coordinate(Double.parseDouble(locations[0]), Double.parseDouble(locations[1]), Double.parseDouble(locations[2]));
            else
                coords[i] = new Coordinate(Double.parseDouble(locations[0]), Double.parseDouble(locations[1]));
        }
    }

    return coords;
}

public static void main(String[] args) {
    ReedsSheppCarPlanner rsp = new ReedsSheppCarPlanner();
    Coordinate footprint1 = new Coordinate(-2.0,0.5);
    Coordinate footprint2 = new Coordinate(2.0,0.5);
    Coordinate footprint3 = new Coordinate(2.0,-0.5);
    Coordinate footprint4 = new Coordinate(-2.0,-0.5);
    rsp.setRadius(0.5);
    rsp.setFootprint(footprint1,footprint2,footprint3,footprint4);
    JTSDrawingPanel panel = JTSDrawingPanel.makeEmpty("debug");
    GeometryFactory gf = new GeometryFactory();
    Polygon footprint = gf.createPolygon(new Coordinate[] {footprint1,footprint2,footprint3,footprint4,footprint1});
    Polygon smoothedFootprint = gf.createPolygon(rsp.getCollisionCircleCenters());
    System.out.println("Smoothing went from " + footprint.getCoordinates().length + " to " + smoothedFootprint.getCoordinates().length + " points");
    panel.addGeometry("orig", footprint, true, true, true, "#00FF00");
    panel.addGeometry("smooth", smoothedFootprint, false, false, true, "#FF0000");
    for (int i = 0; i < smoothedFootprint.getCoordinates().length; i++) {
        double delta = 0.1;
        Coordinate p1 = new Coordinate(smoothedFootprint.getCoordinates()[i].x,smoothedFootprint.getCoordinates()[i].y);
        Coordinate p2 = new Coordinate(smoothedFootprint.getCoordinates()[i].x+delta,smoothedFootprint.getCoordinates()[i].y+delta);
        Coordinate p3 = new Coordinate(smoothedFootprint.getCoordinates()[i].x-delta,smoothedFootprint.getCoordinates()[i].y+delta);
        panel.addGeometry("_cp"+i, gf.createPolygon(new Coordinate[] {p1,p2,p3,p1}), false, false, false, "#000000");
    }


}

public MatrixSearchContext create(Graph graph, Coordinate[] sources, Coordinate[] destinations, double maxSearchRadius) throws Exception
{
    if (_locationCache == null)
        _locationCache = new HashMap<Coordinate, LocationEntry>();
    else
        _locationCache.clear();

    QueryGraph queryGraph = new QueryGraph(graph);
    List<QueryResult> queryResults = new ArrayList<QueryResult>(sources.length + destinations.length);

    resolveLocations(sources, queryResults, maxSearchRadius);
    resolveLocations(destinations, queryResults, maxSearchRadius);

    queryGraph.lookup(queryResults, _buffer);

    MatrixLocations mlSources = createLocations(sources);
    MatrixLocations mlDestinations = createLocations(destinations);

    return new  MatrixSearchContext(queryGraph, mlSources, mlDestinations);
}

public double getDistance()
{
 if (distance == -1 && geometry != null)
 {
  DistanceCalc dc = new DistanceCalcEarth();
  distance = 0.0;

  Coordinate[] coords = geometry.getCoordinates();
  for (int i = 0; i< coords.length - 1; i++)
  {
      Coordinate c0 = coords[i];
      Coordinate c1 = coords[i+1];
      distance += dc.calcDist(c0.y, c0.x, c1.y, c1.x);
  }
 }

 return distance;
}

private static int checkRepeatedPoints2d(LineString lineString) {
  int repeatedPoints = 0;

  final CoordinateSequence coordSeq = lineString.getCoordinateSequence();
  Coordinate nextCoord = null;
  Coordinate prevCoord;
  for (int i = 0; i < coordSeq.size(); ++i) {
    prevCoord = nextCoord;
    nextCoord = coordSeq.getCoordinate(i);
    if (nextCoord.equals(prevCoord)) {
      ++repeatedPoints;
    }
  }

  return repeatedPoints;
}

private static void validateLinearRing(LineStringBuilder lineString) {
    /**
     * Per GeoJSON spec (http://geojson.org/geojson-spec.html#linestring)
     * A LinearRing is closed LineString with 4 or more positions. The first and last positions
     * are equivalent (they represent equivalent points). Though a LinearRing is not explicitly
     * represented as a GeoJSON geometry type, it is referred to in the Polygon geometry type definition.
     */
    List<Coordinate> points = lineString.coordinates;
    if (points.size() < 4) {
        throw new IllegalArgumentException(
                "invalid number of points in LinearRing (found [" + points.size() + "] - must be >= 4)");
    }

    if (!points.get(0).equals(points.get(points.size() - 1))) {
            throw new IllegalArgumentException("invalid LinearRing found (coordinates are not closed)");
    }
}

private static Coordinate[][][] buildCoordinates(List<List<Coordinate[]>> components) {
    Coordinate[][][] result = new Coordinate[components.size()][][];
    for (int i = 0; i < result.length; i++) {
        List<Coordinate[]> component = components.get(i);
        result[i] = component.toArray(new Coordinate[component.size()][]);
    }

    if(debugEnabled()) {
        for (int i = 0; i < result.length; i++) {
            LOGGER.debug("Component [{}]:", i);
            for (int j = 0; j < result[i].length; j++) {
                LOGGER.debug("\t{}", Arrays.toString(result[i][j]));
            }
        }
    }

    return result;
}

public void testParseSimplePoint() throws IOException {
    XContentBuilder pointGeoJson = XContentFactory.jsonBuilder()
            .startObject()
                .field("type", "Point")
                .startArray("coordinates").value(100.0).value(0.0).endArray()
            .endObject();

    Point expected = GEOMETRY_FACTORY.createPoint(new Coordinate(100.0, 0.0));
    assertGeometryEquals(new JtsPoint(expected, SPATIAL_CONTEXT), pointGeoJson);
}

private PolygonBuilder getPolygonBuilder(GeoPolygon geoPolygon) {
    List<Coordinate> shell = geoPolygon.getOuterBoundary().stream()
            .map(geoPoint -> new Coordinate(geoPoint.getLongitude(), geoPoint.getLatitude()))
            .collect(Collectors.toList());
    PolygonBuilder polygonBuilder = ShapeBuilders.newPolygon(shell);
    geoPolygon.getHoles().forEach(hole -> {
        List<Coordinate> coordinates = hole.stream()
                .map(geoPoint -> new Coordinate(geoPoint.getLongitude(), geoPoint.getLatitude()))
                .collect(Collectors.toList());
        polygonBuilder.hole(ShapeBuilders.newLineString(coordinates));
    });
    return polygonBuilder;
}

/**
 * Creates a deep copy of the Object
 *
 * @return The deep copy
 */
public Object clone() {
    Coordinate[] cloneCoordinates = new Coordinate[size()];
    for (int i = 0; i < coordinates.length; i++) {
        cloneCoordinates[i] = (Coordinate) coordinates[i].clone();
    }
    return new DefaultCoordinateSequence(cloneCoordinates, size);
}

public boolean contains(int x, int y) {
    GeometryFactory gf = new GeometryFactory();
    Point geom = gf.createPoint(new Coordinate(x, y));
    for (Geometry p : maskGeometries) {
        if (p.contains(geom)) {
            return true;
        }
    }
    return false;
}

public static String formatCoordinate(Coordinate coord, String separator, StringBuffer buffer) {
    buffer.setLength(0);
    DoubleFormatUtil.formatDouble(coord.x, 7,  8, buffer);
    String xValue = buffer.toString();
    buffer.setLength(0);
    DoubleFormatUtil.formatDouble(coord.y, 7,  8, buffer);

    return  xValue + separator + buffer.toString();
}

/**
 * rasterize the mask clipped with the Rectangle scaled back to full size with an offset onto a BufferedImage
 */
public BufferedImage rasterizeJTS(Rectangle rect, int offsetX, int offsetY, double scalingFactor) {

    // create the buffered image of the size of the Rectangle
    BufferedImage image = new BufferedImage(rect.width, rect.height, BufferedImage.TYPE_BYTE_BINARY);
    GeometryFactory gf = new GeometryFactory();

    // define the clipping region in full scale
    Coordinate[] coords = new Coordinate[]{
        new Coordinate((int) (((double) rect.getMinX() / scalingFactor)), (int) (((double) rect.getMinY() / scalingFactor))),
        new Coordinate((int) (((double) rect.getMaxX() / scalingFactor)), (int) (((double) rect.getMinY() / scalingFactor))),
        new Coordinate((int) (((double) rect.getMaxX() / scalingFactor)), (int) (((double) rect.getMaxY() / scalingFactor))),
        new Coordinate((int) (((double) rect.getMinX() / scalingFactor)), (int) (((double) rect.getMaxY() / scalingFactor))),
        new Coordinate((int) (((double) rect.getMinX() / scalingFactor)), (int) (((double) rect.getMinY() / scalingFactor))),};

    Polygon geom = gf.createPolygon(gf.createLinearRing(coords));

    for (Geometry p : maskGeometries) {
        if (p.intersects(geom)) {
            Geometry pg=p.intersection(geom).buffer(0);
            //Coordinate[] coordsInter=gg.getCoordinates();
            //Polygon pg=gf.createPolygon(coordsInter);

            for(int x=0;x<rect.width;x++){
                for(int y=0;y<rect.height;y++){
                    Point point=gf.createPoint(new Coordinate(rect.x+x,rect.y+y));
                    if(pg.contains(point)){
                try{
                    image.setRGB(x,y, Color.WHITE.getRGB());
                }catch(Exception e){
                    logger.error(e.getMessage()+"  x:"+x+"  y:"+y);
                }
                    }
            }
         }
     }
    }
    return image;

}

public static void renderPolygon(OpenGLContext context,float zoomWidth,float zoomHeight,Coordinate[] coordinates,float size,Color color){
    GL2 gl = context.getGL().getGL2();
    float[] c = color.brighter().getColorComponents(null);
       gl.glColor3f(c[0], c[1], c[2]);
    gl.glPointSize(size);
       gl.glBegin(GL.GL_LINE_STRIP);
       for (Coordinate point : coordinates) {
           gl.glVertex2d((point.x - context.getX()) / zoomWidth, 1 - (point.y - context.getY()) / zoomHeight);
       }
       //Coordinate point = temp.getCoordinates()[0];
       //gl.glVertex2d((point.x - x) / width, 1 - (point.y - y) / height);

       gl.glEnd();
       gl.glFlush();
}

static Polygon createPolygonXy(String id, String name, double[][] coordinates) {
  Coordinate[] temp = new Coordinate[coordinates.length];

  for (int i = 0; i < coordinates.length; i++) {
    temp[i] = new Coordinate(coordinates[i][0], coordinates[i][1]);
  }

  Polygon polygon = GEOMETRY_FACTORY.createPolygon(temp);
  Map<String, Object> attributes = new LinkedHashMap<>();
  attributes.put("id", id.hashCode());
  attributes.put("name", name);
  polygon.setUserData(attributes);
  return polygon;
}

/**
 *
 * @param timeStampStart
 * @param azimuth
 * @param pixels
 * @return
 */
public GeometryImage(String name,String type,String timeStampStart,double azimuth, Boat[] boats) {
    this.type=type;
    this.name=name;
       //GeometricLayer out = new GeometricLayer("point");
       //setName("VDS Analysis");
    geoms=new ArrayList<>();
    //attsMap=new HashMap<>();
       GeometryFactory gf = new GeometryFactory();
       long runid = System.currentTimeMillis();
       int count=0;
       for (Boat boat : boats) {
           AttributesGeometry atts = new AttributesGeometry(VDSSchema.schema);//, VDSSchema.types);
           atts.set(VDSSchema.ID, count++);
           atts.set(VDSSchema.MAXIMUM_VALUE, boat.getAllMaxValue());
           atts.set(VDSSchema.TILE_AVERAGE, boat.getAllTileAvg());
           atts.set(VDSSchema.TILE_STANDARD_DEVIATION, boat.getAllTileStd());
           atts.set(VDSSchema.THRESHOLD, boat.getAllTrhesh());
           atts.set(VDSSchema.RUN_ID, runid + "");
           atts.set(VDSSchema.NUMBER_OF_AGGREGATED_PIXELS, boat.getSize());
           atts.set(VDSSchema.ESTIMATED_LENGTH, boat.getLength());
           atts.set(VDSSchema.ESTIMATED_WIDTH, boat.getWidth());
           atts.set(VDSSchema.SIGNIFICANCE, boat.getAllSignificance());//(boat.getLength() - boat.getWidth()) / (boat.getWidth() * boat.getHeading()));
           timeStampStart=timeStampStart.replace("Z", "");
           atts.set(VDSSchema.DATE, Timestamp.valueOf(timeStampStart));
           atts.set(VDSSchema.VS, 0);
           //compute the direction of the vessel considering the azimuth of the image result is between 0 and 180 degree
           double degree = boat.getHeading() + 90 + azimuth;
           if (degree > 180) {
               degree = degree - 180;
           }
        degree = degree-90;
           atts.set(VDSSchema.ESTIMATED_HEADING, degree);
           Point p=gf.createPoint(new Coordinate(boat.getPosx(), boat.getPosy()));
           p.setUserData(atts);
           put(p);
       }
   }

/**
 * Creates a new {@code Polygon} whose exterior shell is a smoothed
 * version of the input {@code Polygon}.
 * <p>
 * Note: this method presently ignores holes.
 * 
 * @param p the input {@code Polygon}
 * 
 * @param alpha a value between 0 and 1 (inclusive) specifying the tightness
 *        of fit of the smoothed boundary (0 is loose)
 * 
 * @return the smoothed {@code Polygon}
 */
public Polygon smooth(Polygon p, double alpha) {
    Coordinate[] coords = p.getExteriorRing().getCoordinates();
    final int N = coords.length - 1;  // first coord == last coord

    Coordinate[][] controlPoints = getPolygonControlPoints(coords, N, alpha);

    List<Coordinate> smoothCoords = new ArrayList<Coordinate>();
    double dist;
    for (int i = 0; i < N; i++) {
        int next = (i + 1) % N;

        dist = coords[i].distance(coords[next]);
        if (dist < control.getMinLength()) {
            // segment too short - just copy input coordinate
            smoothCoords.add(new Coordinate(coords[i]));

        } else {
            int smoothN = control.getNumVertices(dist);
            Coordinate[] segment = cubicBezier(
                    coords[i], coords[next],
                    controlPoints[i][1], controlPoints[next][0],
                    smoothN);

            int copyN = i < N - 1 ? segment.length - 1 : segment.length;
            for (int k = 0; k < copyN; k++) {
                smoothCoords.add(segment[k]);
            }
        }
    }

    LinearRing shell = geomFactory.createLinearRing(smoothCoords.toArray(new Coordinate[0]));
    return geomFactory.createPolygon(shell, null);
}

public boolean contains(int x, int y) {
    if (getType().equals(GeometryImage.POINT)) {
        return false;
    }
    GeometryFactory gf = new GeometryFactory();
    Point geom = gf.createPoint(new Coordinate(x, y));
    for (Geometry p : glayer.getGeometries()) {
        if (p.contains(geom)) {
            return true;
        }
    }
    return false;
}

/**
 * 
 * @param imagePosition
 * @param context
 */
public void mouseClicked(java.awt.Point imagePosition,Object glContext) {
    OpenGLContext context=(OpenGLContext)glContext;
    this.selectedGeometry = null;
    GeometryFactory gf = new GeometryFactory();
    com.vividsolutions.jts.geom.Point p = gf.createPoint(new Coordinate(imagePosition.x, imagePosition.y));
    for (Geometry temp : glayer.getGeometries()) {
        //if (p.equalsExact(temp, 5 * context.getZoom())) {
        if (p.equalsExact(temp, 5 * context.getZoom())) {   
            this.selectedGeometry = temp;
            //System.out.println(""+temp.getCoordinate().x+","+temp.getCoordinate().y);
            LayerPickedData.put(temp, glayer.getAttributes(temp));
        }
    }
}

public MatrixRequest createMatrixRequest()
{
    MatrixRequest mtxReq = new MatrixRequest();
    mtxReq.setProfileType(_profileType);
    mtxReq.setMetrics(_metric);
    mtxReq.setUnits(_units);

    if (_sourceIndex == -1)
    {
        mtxReq.setSources(_locations);
        mtxReq.setDestinations(_locations);
    }
    else
    {
        mtxReq.setSources(new Coordinate[] { _locations[_sourceIndex] });

        int nLocations = _locations.length;
        Coordinate[] destinations = new Coordinate[nLocations - 1];

        int j = 0;
        for (int i = 0; i < nLocations; ++i)
        {
            if (i != _sourceIndex)
            {
                destinations[j] = _locations[i];
                ++j;
            }
        }
        mtxReq.setDestinations(destinations);
    }

    return mtxReq;
}