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 es.unex.sextante.core.Sextante;

import es.unex.sextante.dataObjects.IVectorLayer;

import es.unex.sextante.exceptions.GeoAlgorithmExecutionException;

import es.unex.sextante.exceptions.RepeatedParameterNameException;

import es.unex.sextante.outputs.OutputVectorLayer;

import org.cresques.cts.IProjection;

import org.gvsig.fmap.crs.CRSFactory;

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

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

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

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

import org.gvsig.geoprocess.core.gvGeoAlgorithm;

import org.gvsig.geoprocess.core.gvVectorLayer;

/**

 * Reproject algorithm

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

 */

public class ReprojectAlgorithm extends gvGeoAlgorithm {

        public static final String        RESULT            = "RESULT";

        public static final String        LAYER             = "LAYER";

        public static final String        SELECTED_GEOM     = "SELECTED_GEOM";

        public static final String        DST_PROJECTION    = "DST_PROJECTION";

        /*

         * (non-Javadoc)

         * @see es.unex.sextante.core.GeoAlgorithm#defineCharacteristics()

         */

        public void defineCharacteristics() {

                setName(Sextante.getText("Reproject"));

                setGroup(Sextante.getText("gvSIG_Algorithms"));

        // setGeneratesUserDefinedRasterOutput(false);

                try {

                        m_Parameters.addInputVectorLayer(LAYER, 

                                                                                                Sextante.getText("Input_layer"), 

                                                                                                IVectorLayer.SHAPE_TYPE_WRONG, 

                                                                                                true);

                        m_Parameters.addBoolean(SELECTED_GEOM, 

                                                                        Sextante.getText("Selected_geometries"), 

                                                                        false);

                        m_Parameters.addString(DST_PROJECTION, Sextante.getText("Projection"));

                        addOutputVectorLayer(RESULT,

                                                                Sextante.getText("Reproject"),

                                                                OutputVectorLayer.SHAPE_TYPE_UNDEFINED);

                } catch (RepeatedParameterNameException e) {

                        Sextante.addErrorToLog(e);

                }

        }

        /*

         * (non-Javadoc)

         * @see es.unex.sextante.core.GeoAlgorithm#processAlgorithm()

         */

        public boolean processAlgorithm() throws GeoAlgorithmExecutionException {

                IVectorLayer layer = m_Parameters.getParameterValueAsVectorLayer(LAYER);

                boolean selectedGeom = m_Parameters.getParameterValueAsBoolean(SELECTED_GEOM);

                String dstProj = m_Parameters.getParameterValueAsString(DST_PROJECTION);

                FeatureStore storeLayer = null;

                if(layer instanceof gvVectorLayer)

                        storeLayer = ((gvVectorLayer)layer).getFeatureStore();

                else

                        return false;

                try {

                        FeatureSet features = null;

                        features = storeLayer.getFeatureSet();

                        FeatureType featureType = features.getDefaultFeatureType();

                        FeatureStore outFeatStore = buildOutPutStore(featureType, layer.getShapeType(), Sextante.getText("Reproject"), RESULT);

                        IProjection projOutput = CRSFactory.getCRS(dstProj);

                        ReprojectOperation operation = new ReprojectOperation(((IProjection)layer.getCRS()), projOutput);

                        operation.setProgressModel(this);

                        operation.computesFeatureOperation(storeLayer, outFeatStore, attrNames, selectedGeom, true);

                } catch (DataException e) {

                        Sextante.addErrorToLog(e);

                        return false;

                }

                return true;

        }

}