Application: gvSIG desktop » gvSIG geoprocess

/*

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

 *

 * Copyright (C) 2010 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.

 */

package org.gvsig.sextante.app.algorithm.reproject;

import java.util.Iterator;

import java.util.List;

import org.cresques.cts.ICoordTrans;

import org.cresques.cts.IProjection;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.feature.EditableFeature;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.fmap.geom.exception.CreateGeometryException;

import org.gvsig.sextante.app.algorithm.base.core.DALFeaturePersister;

import org.gvsig.sextante.app.algorithm.base.core.GeometryOperation;

import es.unex.sextante.core.Sextante;

/**

 * Operation to reproject a Feature

 * @author <a href="mailto:nachobrodin@gmail.com">Nacho Brodin</a>

 */

public class ReprojectOperation extends GeometryOperation {

        private EditableFeature                  lastEditFeature  = null;

        private ICoordTrans                      transf           = null;

        public ReprojectOperation(IProjection srcProj, IProjection dstProj) {

                this.transf = srcProj.getCT(dstProj);

        }

        /**

         * Sets the output FeatureType

         * @param out

         * @throws DataException 

         */

        public void setFeatureStore(FeatureStore out, String[] attrNames) throws DataException {

                persister = new DALFeaturePersister(out, attrNames);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.sextante.app.algorithm.base.core.GeometryOperation#invoke(org.gvsig.fmap.geom.Geometry, org.gvsig.fmap.dal.feature.Feature)

         */

        @SuppressWarnings("unchecked")

        public EditableFeature invoke(org.gvsig.fmap.geom.Geometry g, Feature feature) {

                List geomList = feature.getGeometries();

                try {

                        if(geomList == null) {

                                org.gvsig.fmap.geom.Geometry geom = feature.getDefaultGeometry();

                                geom.reProject(transf);

                                EditableFeature editFeat = feature.getEditable();

                                editFeat.setDefaultGeometry(geom);

                                persister.addFeature(feature, geom);

                        } else {

                                Iterator<org.gvsig.fmap.geom.Geometry> itGeom = geomList.iterator();

                                EditableFeature editFeat = null;

                                boolean first = true;

                                int nGeom = 0;

                                while(itGeom.hasNext()) {

                                        org.gvsig.fmap.geom.Geometry geom = itGeom.next();

                                        geom.reProject(transf);

                                        editFeat = feature.getEditable();

                                        editFeat.setGeometry(nGeom, geom);

                                        nGeom ++;

                                        if(first) 

                                                persister.addFeature(editFeat, geom);

                                        else 

                                                persister.addGeometryToExistingFeature(editFeat, geom);

                                }

                        }

                } catch (DataException e) {

                        Sextante.addErrorToLog(e);

                } catch (CreateGeometryException e) {

                        Sextante.addErrorToLog(e);

                }

                return lastEditFeature;

        }

        @Override

        public void invoke(org.gvsig.fmap.geom.Geometry g, EditableFeature featureInput) {

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.sextante.app.algorithm.base.core.IOperation#getResult()

         */

        public Object getResult() {

                return lastEditFeature;

        }

}