| 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.NewFConverter;

import org.gvsig.jts.JtsUtil;

import org.gvsig.topology.Messages;

import org.gvsig.topology.TopologyError;

import com.hardcode.gdbms.engine.values.Value;

import com.hardcode.gdbms.engine.values.ValueFactory;

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

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

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

import com.iver.cit.gvsig.fmap.edition.EditableAdapter;

import com.iver.cit.gvsig.fmap.edition.EditionEvent;

import com.vividsolutions.jts.geom.Geometry;

import com.vividsolutions.jts.geom.GeometryCollection;

import com.vividsolutions.jts.precision.EnhancedPrecisionOp;

public class CreateFeatureOverlapPolygonFix extends AbstractTopologyErrorFix {

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

                IGeometry errorGeometry = error.getGeometry();

                Geometry errorGeoJts = NewFConverter.toJtsGeometry(errorGeometry);

                IFeature firstFeature = error.getFeature1();

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

                Geometry[] first = null;

                if(firstJts instanceof GeometryCollection){

                        first = JtsUtil.extractGeometries((GeometryCollection) firstJts);

                }else

                        first = new Geometry[]{firstJts} ;

                Geometry[] second = null;

                if(errorGeoJts instanceof GeometryCollection){

                        second = JtsUtil.extractGeometries((GeometryCollection) errorGeoJts);

                }else

                {

                        second = new Geometry[]{errorGeoJts};

                }

                for (int i = 0; i < first.length; i++) {

                        Geometry geom = first[i];

                        Geometry partialSolution = null;

                        for (int j = 0; j < second.length; j++) {

                                Geometry aux = EnhancedPrecisionOp.difference(geom, second[j]);

                                if(partialSolution == null)

                                        partialSolution = aux;

                                else

                                        partialSolution = EnhancedPrecisionOp.union(partialSolution, aux);

                        }//for

                        first[i] = partialSolution;

                }//for i

                Geometry newFirstJts = JtsUtil.GEOMETRY_FACTORY.createGeometryCollection(first);

                IGeometry newFirst = NewFConverter.toFMap(newFirstJts);

                IFeature secondFeature = error.getFeature2();

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

                Geometry[] third = null;

                if(secondJts instanceof GeometryCollection){

                        third = JtsUtil.extractGeometries((GeometryCollection) errorGeoJts);

                }else

                {

                        third = new Geometry[]{errorGeoJts};

                }

                for (int i = 0; i < third.length; i++) {

                        Geometry geom = third[i];

                        Geometry partialSolution = null;

                        for (int j = 0; j < second.length; j++) {

                                Geometry aux = EnhancedPrecisionOp.difference(geom, second[j]);

                                if(partialSolution == null)

                                        partialSolution = aux;

                                else

                                        partialSolution = EnhancedPrecisionOp.union(partialSolution, aux);

                        }//for

                        third[i] = partialSolution;

                }//for i

                Geometry newThirdJts = JtsUtil.GEOMETRY_FACTORY.createGeometryCollection(third);

                IGeometry newThird = NewFConverter.toFMap(newThirdJts);

                firstFeature.setGeometry(newFirst);

                secondFeature.setGeometry(newThird);

                int valueLenght = firstFeature.getAttributes().length;

                Value[] newValues = new Value[valueLenght];

                for(int i = 0; i < valueLenght; i++){

                        newValues[i] = ValueFactory.createNullValue();

                }

                String newId = error.getOriginLayer().getSource().getShapeCount()+"";

                DefaultFeature newFeature = new DefaultFeature(errorGeometry, newValues, newId );

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

                firstLyrFeatures.add(firstFeature);

                firstLyrFeatures.add(secondFeature);

                firstLyrFeatures.add(newFeature);

                return (List<IFeature>[]) new List[]{firstLyrFeatures};

        }

        public void fix(TopologyError error) throws BaseException {

                EditableAdapter[] adapters = prepareEdition(error);

                List<IFeature>[] correctedFeatures = fixAlgorithm(error);

                if (correctedFeatures != null) {

                        List<IFeature> firstLyr = correctedFeatures[0];

                        IFeature firstFeature = firstLyr.get(0);

                        adapters[0].modifyRow(Integer.parseInt(firstFeature.getID()), 

                                        firstFeature, 

                                        getEditionDescription(), 

                                        EditionEvent.GRAPHIC);

                        IFeature secondFeature = firstLyr.get(1);

                        adapters[0].modifyRow(Integer.parseInt(secondFeature.getID()), 

                                        secondFeature, 

                                        getEditionDescription(), 

                                        EditionEvent.GRAPHIC);

                        adapters[0].doAddRow(firstLyr.get(2), EditionEvent.GRAPHIC);

                        adapters[0].endComplexRow(getEditionDescription());

                        error.getTopology().removeError(error);

                }

        }

        public String getEditionDescription() {

                return Messages.getText("CREATE_FEATURE_OVERLAP_AREA_FIX");

        }

}