| gvSIG desktop 1

/*

 * Created on 07-sep-2007

 *

 * 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;

import org.gvsig.jts.GeometryCollapsedException;

import org.gvsig.jts.GeometrySnapper;

import org.gvsig.topology.AbstractTopologyRule;

import org.gvsig.topology.IOneLyrRule;

import org.gvsig.topology.IRuleWithClusterTolerance;

import org.gvsig.topology.Messages;

import org.gvsig.topology.Topology;

import org.gvsig.topology.TopologyError;

import org.gvsig.topology.TopologyRuleDefinitionException;

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

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.layers.FLyrVect;

import com.iver.utiles.XMLEntity;

import com.vividsolutions.jts.geom.Geometry;

/**

 * For lines o polygons. The lenght of a line or the perimeter

 * of a polygon must be larger than the cluster tolerance.

 * 

 * Two consecutives points at a distance lower than cluster tolerance must be

 * deleted.

 *

 *

 * @author azabala

 */

public class MustBeLargerThanClusterTolerance extends AbstractTopologyRule implements IOneLyrRule, IRuleWithClusterTolerance {

        //TODO Test that internazionalization are running well

         static  final String ruleName = Messages.getText("must_be_larger_than_cluster_tolerance");

         /**

          * Cluster tolerance to check.

          */

        private double clusterTolerance;

        /**

         * Snapper to check coords proximity of a given geometry

         */

        private GeometrySnapper geometrySnapper;

        public MustBeLargerThanClusterTolerance(Topology topology, FLyrVect originLyr, double clusterTolerance){

                super(topology, originLyr);

                setClusterTolerance(clusterTolerance);

        }

        public MustBeLargerThanClusterTolerance(FLyrVect originLyr, double clusterTolerance){

                this(null, originLyr, clusterTolerance);

        }

        public MustBeLargerThanClusterTolerance(){}

        public String getDescription() {

                return ruleName;

        }

        public void checkPreconditions() throws TopologyRuleDefinitionException {

                //This rule doesnt apply to Point or MultiPoint vectorial layers.

                try {

                        int shapeType = this.originLyr.getShapeType();

                        if( (shapeType == FShape.POINT) || (shapeType == FShape.MULTIPOINT) || (shapeType == FShape.TEXT))

                                throw new TopologyRuleDefinitionException();

                } catch (ReadDriverException e) {

                        e.printStackTrace();

                        throw new TopologyRuleDefinitionException("Error leyendo el tipo de geometria del driver",e);

                }        

        }

        /**

         * Validates this rule with a feature of the origin layer

         * @param feature feature of the origin layer this rule is checking

         */

        public void validateFeature(IFeature feature) {

                IGeometry geometry = feature.getGeometry();

                Geometry jtsGeometry = geometry.toJTSGeometry();

                try{

                        geometrySnapper.snap(jtsGeometry);

                }catch(GeometryCollapsedException e){

                        //use an ErrorFactory

                        TopologyError topologyError = new TopologyError(geometry, this, feature, topology);

                        topologyError.setID(errorContainer.getErrorFid());

                        addTopologyError(topologyError);

                }

        }

        public double getClusterTolerance() {

                return clusterTolerance;

        }

        public void setClusterTolerance(double clusterTolerance) {

                this.clusterTolerance = clusterTolerance;

                this.geometrySnapper = new GeometrySnapper(clusterTolerance);

        } 

        public XMLEntity getXMLEntity(){

                XMLEntity xml = super.getXMLEntity();

                xml.putProperty("className", getClassName());

                xml.putProperty("clusterTolerance", this.clusterTolerance);

                return xml;

        }

        public void setXMLEntity(XMLEntity xml){

                super.setXMLEntity(xml);

                if(xml.contains("clusterTolerance")){

                        setClusterTolerance(xml.getDoubleProperty("clusterTolerance"));

                }

        }

}