Application: gvSIG desktop

/*

 * 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 com.iver.cit.gvsig.cad;

import org.gvsig.fmap.core.FGeometryUtil;

import org.gvsig.jts.JtsUtil;

import org.gvsig.topology.ui.util.GUIUtil;

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

import com.iver.andami.PluginServices;

import com.iver.andami.messages.NotificationManager;

import com.iver.andami.plugins.Extension;

import com.iver.cit.gvsig.CADExtension;

import com.iver.cit.gvsig.EditionUtilities;

import com.iver.cit.gvsig.drivers.featureiterators.FeatureBitsetIterator;

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.cit.gvsig.project.documents.view.gui.View;

import com.vividsolutions.jts.geom.Geometry;

/**

 * This extension only will active when active layer

 * is a linear (dimension = 1) vectorial layer with

 * selected lines.

 * 

 * It smooths the selected lines.

 * 

 * @author Alvaro Zabala

 *

 */

public class SmoothPolylinesExtension extends Extension {

        private View view;

        public void execute(String actionCommand) {

                try {

                        FLyrVect lv = (FLyrVect) CADExtension.

                                                                getEditionManager().

                                                                getActiveLayerEdited().

                                                                getLayer();

                        int geometryDimensions = FGeometryUtil.getDimensions(lv.getShapeType());

                        FeatureBitsetIterator iterator = new FeatureBitsetIterator(lv.getSource());

                        while(iterator.hasNext()){

                                IFeature feature = iterator.next();

                                IGeometry geometry = feature.getGeometry();

                                Geometry jtsGeometry = geometry.toJTSGeometry();

                                Geometry generalizedGeometry = null;

                                if(geometryDimensions == 1)

                                        generalizedGeometry = JtsUtil.douglasPeuckerSimplify(jtsGeometry, JtsUtil.GENERALIZATION_FACTOR.doubleValue());

                                else 

                                        generalizedGeometry = JtsUtil.topologyPreservingSimplify(jtsGeometry, JtsUtil.GENERALIZATION_FACTOR.doubleValue());

                        }

//                          IGeometry geom1=ShapeFactory.createPolyline2D(newGp1);

//                     IGeometry geom2=ShapeFactory.createPolyline2D(newGp2);

//

//                     DefaultFeature dfLine1 = (DefaultFeature) dre.getLinkedRow().cloneRow();

//                     dfLine1.setGeometry(geom1);

//            int indexLine1 = addGeometry(geom1, dfLine1

//              .getAttributes());

//

//            selectedRowAux.add(new DefaultRowEdited(dfLine1,

//              IRowEdited.STATUS_ADDED, indexLine1));

//

//            DefaultFeature dfLine2 = (DefaultFeature) dre.getLinkedRow().cloneRow();

//                  dfLine2.setGeometry(geom2);

//            int indexLine2 = addGeometry(geom2, dfLine2

//               .getAttributes());

//

//            selectedRowAux.add(new DefaultRowEdited(dfLine2,

//               IRowEdited.STATUS_ADDED, indexLine2));

//                         vea.removeRow(dre.getIndex(), getName(), EditionEvent.GRAPHIC);

//                     vea.endComplexRow(getName());

//                   vle.setSelectionCache(VectorialLayerEdited.NOTSAVEPREVIOUS, selectedRowAux);

                } catch (ReadDriverException e) {

                        String title = PluginServices.getText(this, "Error_De_Acceso_Datos");

                        String msg = PluginServices.getText(this, "Error_accediendo_a_los_datos");

                        GUIUtil.getInstance().messageBox(msg, title);

                        e.printStackTrace();

                }

        }

        public void initialize() {

                registerIcons();

        }

        private void registerIcons(){

                PluginServices.getIconTheme().registerDefault("smooth-geometry",

                                                                                                           this.getClass().

                                                                                                           getClassLoader().

                                                                                                           getResource("images/smooth-geometry.gif")

                );

        }

        /**

         * Returns if this Edit CAD tool is visible. 

         * For this, there must be an active vectorial editing lyr in the TOC, which geometries'

         * dimension would must be linear or polygonal, and with at least one selected geometry.

         *  

         */

        public boolean isEnabled() {

                try {

                        if (EditionUtilities.getEditionStatus() == 

                                EditionUtilities.EDITION_STATUS_ONE_VECTORIAL_LAYER_ACTIVE_AND_EDITABLE) {

                                        this.view = (View) PluginServices.getMDIManager().getActiveWindow();

                                        if (CADExtension.getEditionManager().getActiveLayerEdited() == null)

                                                return false;

                                        FLyrVect lv = (FLyrVect) CADExtension.

                                                                                        getEditionManager().

                                                                                        getActiveLayerEdited().

                                                                                        getLayer();

                                        int geometryDimensions = FGeometryUtil.getDimensions(lv.getShapeType());

                                        if(geometryDimensions <= 0)

                                                return false;

                                        return lv.getRecordset().getSelection().cardinality() != 0;

                        }

                } catch (ReadDriverException e) {

                        NotificationManager.addError(e.getMessage(),e);

                        return false;

                }

                return true;

        }

        public boolean isVisible() {

                if (EditionUtilities.getEditionStatus() == EditionUtilities.EDITION_STATUS_ONE_VECTORIAL_LAYER_ACTIVE_AND_EDITABLE)

                        return true;

                return false;

        }

}