| gvSIG desktop 1

/*

 * Created on 10-abr-2006

 *

 * gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

*

* $Id: 

* $Log: 

*/

package org.gvsig.topology.errorfixes;

import java.util.ArrayList;

import java.util.List;

import org.gvsig.exceptions.BaseException;

import org.gvsig.fmap.core.FeatureUtil;

import org.gvsig.fmap.core.NewFConverter;

import org.gvsig.topology.Messages;

import org.gvsig.topology.TopologyError;

import org.gvsig.util.GFeatureParameter;

import org.gvsig.util.GParameter;

import com.iver.cit.gvsig.fmap.core.IFeature;

import com.iver.cit.gvsig.fmap.core.IGeometry;

import com.iver.cit.gvsig.fmap.layers.FLyrVect;

import com.vividsolutions.jts.geom.Geometry;

/**

 * Automatic fix to 'Polygon must not overlaps' topology error.

 * 

 * It removes from one polygon the common area.

 * 

 * @author Alvaro Zabala

 *

 */

public class MergeOverlapPolygonFix extends AbstractTopologyErrorFix implements ITopologyErrorFixWithParameters {

        /**

         * One of the topology error's causing features, which preserve

         * its geometry.

         */

        public IFeature featureToPreserve;

        /**

         * Parameters needed for the fix

         */

        GParameter[] parameters = null;

        public MergeOverlapPolygonFix() {

        }

        public List<IFeature>[] fixAlgorithm(TopologyError error) throws BaseException {

                List<IFeature>[] solution = null;

                IGeometry errorGeometry = error.getGeometry();

                Geometry errorGeoJts = NewFConverter.toJtsGeometry(errorGeometry);

                IFeature firstFeature = error.getFeature1();

                Geometry firstJts =NewFConverter.toJtsGeometry(firstFeature.getGeometry());

                IFeature secondFeature = error.getFeature2();

                Geometry secondJts = NewFConverter.toJtsGeometry(secondFeature.getGeometry());

                List<IFeature> editedFeatures = new ArrayList<IFeature>();

                if(featureToPreserve.getID().equals(firstFeature.getID())){

                        //we remove the overlapping area of first feature

                        firstFeature = FeatureUtil.removeOverlappingArea(firstFeature, 

                                                                                                        firstJts, 

                                                                                                        errorGeoJts);

                        //and adds to second feature

                        secondJts = secondJts.union(errorGeoJts);

                        secondFeature.setGeometry(NewFConverter.toFMap(secondJts));

                }else{

                        secondFeature = FeatureUtil.removeOverlappingArea(secondFeature, 

                                        secondJts, 

                                        errorGeoJts);

                        //FIXME USAR JTSUTIL PARA CONTEMPLAR LA POSIBILIDAD DE QUE LLEGUEN MULTIGEOMETRIAS

                        firstJts = firstJts.union(errorGeoJts);

                        firstFeature.setGeometry(NewFConverter.toFMap(firstJts));

                }

                editedFeatures.add(firstFeature);

                editedFeatures.add(secondFeature);

                solution = (List<IFeature>[]) new List[]{editedFeatures};

                return solution;

        }

        public String getEditionDescription() {

                return Messages.getText("MERGE_OVERLAP_AREA_FIX");

        }

        public IFeature getFeatureToPreserve() {

                return featureToPreserve;

        }

        public void setFeatureToPreserve(IFeature featureToPreserve) {

                this.featureToPreserve = featureToPreserve;

        }

        public GParameter[] getParameters() {

                return parameters;

        }

        public void setParameterValue(String paramName, Object value) {

                if(paramName.equals("featureToPreserve")){

                        if(value.getClass().isAssignableFrom(IFeature.class)){

                                this.featureToPreserve = (IFeature) value; 

                        }

                }        

        }

        public void initialize(TopologyError error) {

                List<FLyrVect> featureContainers = new ArrayList<FLyrVect>();

                featureContainers.add(error.getOriginLayer());

                if(error.getDestinationLayer() != null){

                        featureContainers.add(error.getDestinationLayer());

                }

                parameters = new GParameter[]{

                                new GFeatureParameter("featureToPreserve",  

                                                        GParameter.FEATURE_PARAM_TYPES, 

                                                         error.getFeature1(), 

                                                         this,

                                                         featureContainers)

                };

        }

}