| gvSIG desktop 1

/* gvSIG. Geographic Information System of the Valencian Government

*

* Copyright (C) 2007-2008 Infrastructures and Transports Department

* of the Valencian Government (CIT)

* 

* This program is free software; you can redistribute it and/or

* modify it under the terms of the GNU General Public License

* as published by the Free Software Foundation; either version 2

* of the License, or (at your option) any later version.

* 

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU General Public License for more details.

* 

* You should have received a copy of the GNU General Public License

* along with this program; if not, write to the Free Software

* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 

* MA  02110-1301, USA.

* 

*/

/*

* AUTHORS (In addition to CIT):

* 2009 {Iver T.I.}   {Task}

*/

package org.gvsig.fmap.geom.operation.tojts;

import java.awt.geom.PathIterator;

import java.util.ArrayList;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.operation.GeometryOperationContext;

import org.gvsig.fmap.geom.operation.GeometryOperationException;

import org.gvsig.fmap.geom.primitive.Point;

import com.vividsolutions.jts.geom.Coordinate;

import com.vividsolutions.jts.geom.CoordinateArrays;

import com.vividsolutions.jts.geom.GeometryFactory;

import com.vividsolutions.jts.geom.LineString;

import com.vividsolutions.jts.geom.MultiLineString;

/**

 * @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>

 */

public class Curve2DToJTS extends ToJTS{

        /*

         * (non-Javadoc)

         * @see org.gvsig.fmap.geom.operation.tojts.ToJTS#invoke(org.gvsig.fmap.geom.Geometry, org.gvsig.fmap.geom.operation.GeometryOperationContext)

         */

        public Object invoke(Geometry geom, GeometryOperationContext ctx) throws GeometryOperationException {

                int srid = -1;

                if (ctx != null){

                        srid = ((JTSGeometryOperationContext)ctx).getSrid();

                }

                ArrayList arrayLines = new ArrayList();

                PathIterator theIterator = geom.getPathIterator(null, geomManager.getFlatness());

                int theType;

                double[] theData = new double[6];

                ArrayList arrayCoords = null;

                LineString lin;

                int numParts = 0;

                Coordinate coord;

                while (!theIterator.isDone()) {

                        //while not done

                        theType = theIterator.currentSegment(theData);

                        //Populate a segment of the new

                        // GeneralPathX object.

                        //Process the current segment to populate a new

                        // segment of the new GeneralPathX object.

                        switch (theType) {

                        case PathIterator.SEG_MOVETO:

                                // System.out.println("SEG_MOVETO");

                                if (arrayCoords == null) {

                                        arrayCoords = new ArrayList();

                                } else {

                                        lin = geomFactory.createLineString(CoordinateArrays.toCoordinateArray(

                                                        arrayCoords));

                                        lin.setSRID(srid);

                                        arrayLines.add(lin);

                                        arrayCoords = new ArrayList();

                                }

                                numParts++;

                                coord = new Coordinate(theData[0], theData[1]);

                                arrayCoords.add(coord);

                                break;

                        case PathIterator.SEG_LINETO:

                                // System.out.println("SEG_LINETO");

                                arrayCoords.add(new Coordinate(theData[0],

                                                theData[1]));

                                break;

                        case PathIterator.SEG_QUADTO:

                                System.out.println("Not supported here");

                                break;

                        case PathIterator.SEG_CUBICTO:

                                System.out.println("Not supported here");

                                break;

                        case PathIterator.SEG_CLOSE:

                                // A�adimos el primer punto para cerrar.

                                Coordinate firstCoord = (Coordinate) arrayCoords.get(0);

                                        // Solo anyadimos cuando no esta ya cerrado

                                arrayCoords.add(new Coordinate(firstCoord.x,

                                                firstCoord.y));

                                break;

                        } //end switch

                        theIterator.next();

                } //end while loop

                if (arrayCoords.size()<2) {

                        throw new GeometryOperationException(geom.getType(), geom.getGeometryType().getSubType());

                }

                lin = geomFactory.createLineString(CoordinateArrays.toCoordinateArray(

                                arrayCoords));

                lin.setSRID(srid);

                arrayLines.add(lin);

                LineString[] lineString = GeometryFactory.toLineStringArray(arrayLines);

                if (lineString.length == 1) {

                    return lineString[0];

                } else {

                MultiLineString resp = geomFactory.createMultiLineString(lineString);

                resp.setSRID(srid);

                return resp;

                }

        }        

}