| 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.topologyrules.jtsisvalidrules;

import java.awt.Color;

import java.util.ArrayList;

import java.util.List;

import org.gvsig.fmap.core.FGeometryUtil;

import org.gvsig.jts.JtsUtil;

import org.gvsig.topology.AbstractTopologyRule;

import org.gvsig.topology.ITopologyErrorFix;

import org.gvsig.topology.Messages;

import org.gvsig.topology.Topology;

import org.gvsig.topology.TopologyRuleDefinitionException;

import org.gvsig.topology.WrongLyrForTopologyException;

import org.gvsig.topology.topologyrules.JtsValidRule;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.iver.cit.gvsig.fmap.core.FPoint2D;

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

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

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

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

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

import com.iver.cit.gvsig.fmap.core.symbols.MultiShapeSymbol;

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

import com.vividsolutions.jts.geom.Coordinate;

import com.vividsolutions.jts.geom.Geometry;

import com.vividsolutions.jts.geom.GeometryCollection;

import com.vividsolutions.jts.geom.MultiPolygon;

import com.vividsolutions.jts.geom.Polygon;

import com.vividsolutions.jts.geom.TopologyException;

import com.vividsolutions.jts.geomgraph.GeometryGraph;

import com.vividsolutions.jts.operation.valid.ConnectedInteriorTester;

/**

 * 

 * Esta regla chequea que los holes de un pol?gono, que por definicion pueden

 * tocarse entre s? en un punto as? como con el borde exterior hagan que el interior

 * del poligono est? inconexo.

 * 

 * 

 * 

 * @author Alvaro Zabala

 *

 */

public class PolygonMustHaveConnectedInterior extends AbstractTopologyRule {

        private static String RULE_NAME = Messages.getText("POLYGON_MUST_NOT_HAVE_INTERSECTED_RINGS");

        private static List<ITopologyErrorFix> automaticErrorFixes = new ArrayList<ITopologyErrorFix>();

        private static final Color DEFAULT_ERROR_COLOR = Color.BLACK;

        private static final MultiShapeSymbol DEFAULT_ERROR_SYMBOL = 

                (MultiShapeSymbol) SymbologyFactory.createDefaultSymbolByShapeType(FShape.MULTI, 

                                                                                        DEFAULT_ERROR_COLOR);

        static{

                DEFAULT_ERROR_SYMBOL.setDescription(RULE_NAME);

                DEFAULT_ERROR_SYMBOL.setSize(2);

        }

        private MultiShapeSymbol errorSymbol;

        JtsValidRule parentRule;

        public PolygonMustHaveConnectedInterior(Topology topology,

                        FLyrVect originLyr) {

                super(topology, originLyr);

        }

        public PolygonMustHaveConnectedInterior(FLyrVect originLyr) {

                super(originLyr);

        }

        public PolygonMustHaveConnectedInterior(){}

        public String getName() {

                return RULE_NAME;

        }

        public void checkPreconditions() throws TopologyRuleDefinitionException {

                int shapeType;

                try {

                        shapeType = this.originLyr.getShapeType();

                        int numDimensions = FGeometryUtil.getDimensions(shapeType);

                        if(numDimensions != 2)

                                throw new WrongLyrForTopologyException("MustNotHaveHoles solo aplica sobre capas de dimension 2");

                } catch (ReadDriverException e) {

                        throw new TopologyRuleDefinitionException(

                                        "Error al tratar de verificar el tipo de geometria");

                }

        }

        public void validateFeature(IFeature feature) {

                Geometry jtsGeo = feature.getGeometry().toJTSGeometry();

                if (jtsGeo instanceof Polygon) {

                        GeometryGraph graph = new GeometryGraph(0, jtsGeo);

                        checkConnectedInteriors(graph, feature);

                } else if (jtsGeo instanceof MultiPolygon) {

                        MultiPolygon multiPoly = (MultiPolygon) jtsGeo;

                        for (int i = 0; i < multiPoly.getNumGeometries(); i++) {

                                Polygon polygon = (Polygon) multiPoly.getGeometryN(i);

                                GeometryGraph graph = new GeometryGraph(0, polygon);

                                checkConnectedInteriors(graph, feature);

                        }

                } else if (jtsGeo instanceof GeometryCollection) {

                        MultiPolygon multiPoly = JtsUtil

                                        .convertToMultiPolygon((GeometryCollection) jtsGeo);

                        for (int i = 0; i < multiPoly.getNumGeometries(); i++) {

                                Polygon polygon = (Polygon) multiPoly.getGeometryN(i);

                                GeometryGraph graph = new GeometryGraph(0, polygon);

                                checkConnectedInteriors(graph, feature);

                        }//for

                }

        }

        private void checkConnectedInteriors(GeometryGraph graph, IFeature feature) {

                ConnectedInteriorTester cit = new ConnectedInteriorTester(graph);

                try{

                        if (!cit.isInteriorsConnected()){

                                Coordinate coord = cit.getCoordinate();

                                FPoint2D pt = new FPoint2D(coord.x, coord.y);

                                IGeometry geometry = ShapeFactory.createGeometry(pt);

                                AbstractTopologyRule violatedRule = null;

                                if(this.parentRule != null)

                                        violatedRule = parentRule;

                                else

                                        violatedRule = this;

                                JtsValidTopologyError error = 

                                        new JtsValidTopologyError(geometry, violatedRule, feature, topology);

                                addTopologyError(error);

                        }

                }catch(TopologyException e){

                        //In unit tests JTS has throwed this exception POLYGON ((440 260, 500 300, 660 300, 600 200, 440 260, 440 260), (440 260, 600 200, 660 300, 500 300, 440 260))

                        e.printStackTrace();

                        AbstractTopologyRule violatedRule = null;

                        if(this.parentRule != null)

                                violatedRule = parentRule;

                        else

                                violatedRule = this;

                        JtsValidTopologyError error = 

                                new JtsValidTopologyError(feature.getGeometry(), violatedRule, feature, topology);

                        addTopologyError(error);

                }

        }

        public JtsValidRule getParentRule() {

                return parentRule;

        }

        public void setParentRule(JtsValidRule parentRule) {

                this.parentRule = parentRule;

        }

        public boolean acceptsOriginLyr(FLyrVect lyr) {

                try {

                        return FGeometryUtil.getDimensions(lyr.getShapeType()) == 2;

                } catch (ReadDriverException e) {

                        e.printStackTrace();

                        return false;

                }

        }

        public List<ITopologyErrorFix> getAutomaticErrorFixes() {

                return automaticErrorFixes;

        }

        public MultiShapeSymbol getDefaultErrorSymbol() {

                return DEFAULT_ERROR_SYMBOL;

        }

        public MultiShapeSymbol getErrorSymbol() {

                return errorSymbol;

        }

}