Application: gvSIG desktop

/* gvSIG. Sistema de Informacin Geogrfica de la Generalitat Valenciana

 *

 * Copyright (C) 2006 Instituto de Desarrollo Regional 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 Ibez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   Instituto de Desarrollo Regional (Universidad de Castilla La-Mancha)

 *   Campus Universitario s/n

 *   02071 Alabacete

 *   Spain

 *

 *   +34 967 599 200

 */

package org.gvsig.remotesensing;

import javax.swing.JOptionPane;

import org.gvsig.fmap.raster.grid.roi.VectorialROI;

import org.gvsig.fmap.raster.layers.FLyrRasterSE;

import org.gvsig.raster.buffer.BufferFactory;

import org.gvsig.raster.buffer.RasterBufferInvalidException;

import org.gvsig.raster.grid.Grid;

import org.gvsig.raster.grid.GridException;

import org.gvsig.raster.util.RasterToolsUtil;

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

import com.iver.andami.PluginServices;

import com.iver.andami.plugins.Extension;

import com.iver.cit.gvsig.fmap.MapContext;

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

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

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

import com.iver.cit.gvsig.project.documents.view.IProjectView;

import com.iver.cit.gvsig.project.documents.view.gui.View;

/**

 * Extensi?n para el C?lculo de Raster (Band Math)

 * 

 * @author Diego Guerrero Sevilla (diego.guerrero@uclm.es)

 *

 */

public class ROIFromFeaturesExtension extends Extension {

        public void initialize() {

        }

        public void execute(String actionCommand) {

                if (actionCommand.equals("roi_from_features")){

                        com.iver.andami.ui.mdiManager.IWindow activeWindow = PluginServices.getMDIManager().getActiveWindow();

                        //si la ventana activa es de tipo Vista 

                        if (activeWindow instanceof View) {

                                View view = (View) activeWindow;

                                MapContext mapContext = view.getModel().getMapContext();

                                FLyrVect flyrVect = null;

                                FLyrRasterSE flyrRaster = null;

                                for (int i = 0; i < mapContext.getLayers().getActives().length; i++){

                                        if (mapContext.getLayers().getActives()[i] instanceof FLyrVect)

                                                flyrVect = (FLyrVect) mapContext.getLayers().getActives()[i];

                                        if (mapContext.getLayers().getActives()[i] instanceof FLyrRasterSE)

                                                flyrRaster = (FLyrRasterSE) mapContext.getLayers().getActives()[i];

                                }

                                if (flyrRaster != null && flyrVect != null){

                                        Grid grid = null;

                            BufferFactory dataSource = flyrRaster.getBufferFactory();

                                        int bands[]=null;        

                                        bands = new  int [flyrRaster.getBandCount()];

                                        for(int i=0; i<flyrRaster.getBandCount();i++)

                                                bands[i]=i;        

                                        try {

                                                grid = new Grid(dataSource, bands);        

                                        } catch (RasterBufferInvalidException e) {

                                                        e.printStackTrace();

                                        }

                                        VectorialROI roi = new VectorialROI(grid);

                                        try {

                                                FBitSet fbs = flyrVect.getRecordset().getSelection();

                                                if(fbs.cardinality()>0){

                                                        for(int i=fbs.nextSetBit(0); i>=0; i=fbs.nextSetBit(i+1)) {

                                                                roi.addGeometry(flyrVect.getSource().getFeature(i).getGeometry());

                                                        }

                                                        JOptionPane.showMessageDialog(null,

                                                                        "Mean: "+roi.getMeanValue()+"Max: "+roi.getMaxValue()+"Min: "+roi.getMinValue(), "ROI Statistics",

                                                                        JOptionPane.WARNING_MESSAGE);

                                                }

                                        } catch (ReadDriverException e) {

                                                e.printStackTrace();

                                        }catch (GridException e) {

                                                RasterToolsUtil.messageBoxError("error_cargar_capa", this, e);

                                        }

                                }

                                else{

                                }

                        }

                }

        }

        public boolean isEnabled() {

                com.iver.andami.ui.mdiManager.IWindow f = PluginServices.getMDIManager().getActiveWindow();

                if (f == null) {

                        return false;

                }

                if (f.getClass() == View.class) {

                        View vista = (View) f;

                        IProjectView model = vista.getModel();

                        MapContext mapa = model.getMapContext();

                        FLayers layers = mapa.getLayers();

                        for (int i = 0; i < layers.getLayersCount(); i++) 

                                if (layers.getLayer(i) instanceof FLyrRasterSE) 

                                        return true;

                }

                return false;

        }

        public boolean isVisible() {

                com.iver.andami.ui.mdiManager.IWindow f = PluginServices.getMDIManager().getActiveWindow();

                if (f == null) {

                        return false;

                }

                if (f instanceof View) {

                        View vista = (View) f;

                        IProjectView model = vista.getModel();

                        MapContext mapa = model.getMapContext();

                        return mapa.getLayers().getLayersCount() > 0;

                } else {

                        return false;

                }

        }

}