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.gui.cad.tools;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Image;

import java.awt.event.InputEvent;

import java.awt.event.MouseEvent;

import java.awt.geom.Point2D;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import org.apache.log4j.Logger;

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.GeometryLocator;

import org.gvsig.fmap.geom.Geometry.SUBTYPES;

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

import org.gvsig.fmap.geom.operation.Draw;

import org.gvsig.fmap.geom.operation.DrawOperationContext;

import org.gvsig.fmap.geom.operation.GeometryOperationException;

import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException;

import org.gvsig.fmap.geom.primitive.Envelope;

import org.gvsig.fmap.geom.primitive.GeneralPathX;

import org.gvsig.fmap.geom.util.Converter;

import org.gvsig.fmap.mapcontext.layers.SpatialCache;

import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect;

import org.gvsig.tools.locator.LocatorException;

import statemap.State;

import com.iver.andami.PluginServices;

import com.iver.cit.gvsig.gui.cad.DefaultCADTool;

import com.iver.cit.gvsig.gui.cad.exception.CommandException;

import com.iver.cit.gvsig.gui.cad.tools.smc.SplitGeometryCADToolContext;

import com.iver.cit.gvsig.gui.cad.tools.split.SplitStrategy;

import com.iver.cit.gvsig.layers.VectorialLayerEdited;

import com.vividsolutions.jts.geom.Coordinate;

import com.vividsolutions.jts.geom.Geometry;

import com.vividsolutions.jts.geom.GeometryCollection;

import com.vividsolutions.jts.geom.GeometryFactory;

import com.vividsolutions.jts.geom.LineString;

import com.vividsolutions.jts.geom.PrecisionModel;

/**

 * CAD Tool which splits the selected geometries of a vectorial editing

 * layer with a digitized polyline.

 *

 *

 * @author Alvaro Zabala

 *

 */

public class SplitGeometryCADTool extends DefaultCADTool {

        private static Logger logger = Logger.getLogger(SplitGeometryCADTool.class.getName());

        /**

         * String representation of this tool (used for example to active the tool

         * in mapcontrol)

         */

        public static final String SPLIT_GEOMETRY_TOOL_NAME = "_split_geometry";

        /**

         * finite state machine for this CAD tool

         */

        protected SplitGeometryCADToolContext _fsm;

        /**

         * Flag to mark if the digitized line has been finished.

         */

        protected boolean digitizingFinished = false;

        /**

         * Collection of digitized geometries

         */

        protected List<Point2D> clickedPoints;

        /**

         * Default Constructor

         */

        public SplitGeometryCADTool(){

        }

        /**

         * Initialization method.

         */

        public void init() {

                digitizingFinished = false;

                _fsm = new SplitGeometryCADToolContext(this);

                setNextTool(SplitGeometryCADTool.SPLIT_GEOMETRY_TOOL_NAME);

        }

        public boolean isDigitizingFinished() {

                return digitizingFinished;

        }

        public String toString() {

                return SplitGeometryCADTool.SPLIT_GEOMETRY_TOOL_NAME;

        }

        public void finishDigitizedLine(){

        }

//        public ArrayList getSelectedRows(){

//                VectorialLayerEdited vle = getVLE();

//                ArrayList selection = vle.getSelectedRow();

//                if( selection.size() == 0){

//                        VectorialEditableAdapter vea = vle.getVEA();

//                        try {

//                                FBitSet bitset = vea.getSelection();

//                                for (int j = bitset.nextSetBit(0);j >= 0;j = bitset.nextSetBit(j + 1)){

//                                        IRowEdited rowEd = vea.getRow(j);

//                                        selection.add(rowEd);

//                                }

//                        } catch (ExpansionFileReadException e) {

//                                e.printStackTrace();

//                        } catch (ReadDriverException e) {

//                                e.printStackTrace();

//                        }

//                }//selection size

//                return selection;

//        }

//        public ArrayList getSelectedRows(){

//                return (ArrayList) CADUtil.getSelectedFeatures(getVLE());

//        }

        public Coordinate[] getPoint2DAsCoordinates(Point2D[] point2d) {

                Coordinate[] solution = new Coordinate[point2d.length];

                for (int i = 0; i < point2d.length; i++) {

                        solution[i] = new Coordinate(point2d[i].getX(), point2d[i].getY());

                }

                return solution;

        }

        public void splitSelectedGeometryWithDigitizedLine(){

                Point2D[] clickedPts = new Point2D[this.clickedPoints.size()];

                clickedPoints.toArray(clickedPts);

                Coordinate[] digitizedCoords = getPoint2DAsCoordinates(clickedPts);

                LineString splittingLs = new GeometryFactory(

                                new PrecisionModel(10000)).createLineString(digitizedCoords);

                try {

                        VectorialLayerEdited vle = getVLE();

                        FeatureStore store=vle.getFeatureStore();

                        Iterator<Feature> selected = store.getFeatureSelection().iterator();

                        getCadToolAdapter().getMapControl().getMapContext().beginAtomicEvent();

                        store.beginEditingGroup(getName());

                        while (selected.hasNext()) {

                                Feature feature = (Feature) selected.next();

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

                                Geometry jtsGeo = Converter.geometryToJts(ig);

                                if (jtsGeo==null)

                                        return;

                                Geometry splitGeo = SplitStrategy.splitOp(jtsGeo, splittingLs);

                                if(splitGeo instanceof GeometryCollection

                                                && ((GeometryCollection)splitGeo).getNumGeometries()>1){

                                        GeometryCollection gc = (GeometryCollection)splitGeo;

                                        for(int j = 0; j < gc.getNumGeometries(); j++){

                                                Geometry g = gc.getGeometryN(j);

                                                org.gvsig.fmap.geom.Geometry fmapGeo = Converter.jtsToGeometry(g);

                                                if (j==0){

                                                        EditableFeature eFeature=feature.getEditable();

                                                        eFeature.setGeometry(store.getDefaultFeatureType().getDefaultGeometryAttributeName(), fmapGeo);

                                                        store.update(eFeature);

                                                }else{

                                                        EditableFeature newFeature=store.createNewFeature(store.getDefaultFeatureType(), feature);

                                                        newFeature.setGeometry(store.getDefaultFeatureType().getDefaultGeometryAttributeName(), fmapGeo);

                                                        store.insert(newFeature);

                                                        SpatialCache spatialCache=((FLyrVect)vle.getLayer()).getSpatialCache();

                                                        Envelope envelope = fmapGeo.getEnvelope();

                                                        spatialCache.insert(envelope,fmapGeo);

                                                }

                                        }//for j

                                }//if splitGeo

                        }

                        store.endEditingGroup();

                        getCadToolAdapter().getMapControl().getMapContext().endAtomicEvent();

                } catch (Exception ex) {

                        PluginServices.getLogger().error("Error splitting geom", ex);

                }

        }

        public void end(){

                getCadToolAdapter().refreshEditedLayer();

                init();

        }

        public void addOption(String s) {

                State actualState = _fsm.getPreviousState();

                String status = actualState.getName();

                if (s.equals(PluginServices.getText(this, "cancel"))) {

                        init();

                        return;

                }

                if (status.equals("TopologicalEdition.FirstPoint")) {

                        return;

                }

                init();

        }

        public void addPoint(double x, double y, InputEvent event) {

                State actualState = _fsm.getPreviousState();

                String status = actualState.getName();

                if (status.equals("SplitGeometry.FirstPoint")) {

                        clickedPoints = new ArrayList<Point2D>();

                        clickedPoints.add(new Point2D.Double(x,y));

                } else if (status.equals("SplitGeometry.DigitizingLine")) {

                        clickedPoints.add(new Point2D.Double(x,y));

                        if (event != null && ((MouseEvent) event).getClickCount() == 2) {

                                digitizingFinished = true;

                                finishDigitizedLine();

                                splitSelectedGeometryWithDigitizedLine();

                                end();

                        }

                }

        }

        public void addValue(double d) {

        }

        /**

         * Draws a polyline with the clicked digitized points in the specified graphics.

         *

         * @param g2 graphics on to draw the polyline

         * @param x last x mouse pointer position

         * @param y last y mouse pointer position

         */

        protected void drawPolyLine(Graphics2D g, double x, double y) {

                GeneralPathX gpx =

                        new GeneralPathX(GeneralPathX.WIND_EVEN_ODD,

                                                                        clickedPoints.size());

                Point2D firstPoint = clickedPoints.get(0);

                gpx.moveTo(firstPoint.getX(), firstPoint.getY());

                for (int i = 1; i < clickedPoints.size(); i++) {

                        Point2D clickedPoint = clickedPoints.get(i);

                        gpx.lineTo(clickedPoint.getX(), clickedPoint.getY());

                }

                gpx.lineTo(x, y);

                org.gvsig.fmap.geom.Geometry geom;

                try {

                        geom = GeometryLocator.getGeometryManager().createCurve(gpx, SUBTYPES.GEOM2D);

                        DrawOperationContext doc=new DrawOperationContext();

                        doc.setGraphics((Graphics2D)g);

                        doc.setViewPort(getCadToolAdapter().getMapControl().getViewPort());

                        doc.setSymbol(DefaultCADTool.geometrySelectSymbol);

                        geom.invokeOperation(Draw.CODE,doc);

                } catch (GeometryOperationNotSupportedException e) {

                        e.printStackTrace();

                } catch (GeometryOperationException e) {

                        e.printStackTrace();

                } catch (LocatorException e) {

                        e.printStackTrace();

                } catch (CreateGeometryException e) {

                        e.printStackTrace();

                }

        }

        public void drawOperation(Graphics g, double x, double y) {

                State actualState = _fsm.getState();

        String status = actualState.getName();

        // draw splitting line

        if ((status.equals("SplitGeometry.DigitizingLine"))) {

                drawPolyLine((Graphics2D) g, x, y);

         }

        // draw selection

        try {

                Image imgSel = getVLE().getSelectionImage();

                if (imgSel != null)

                        g.drawImage(imgSel, 0, 0, null);

        } catch (Exception e) {

                PluginServices.getLogger().error("Error drawing Editing Selection", e);

        }

        }

        public String getName() {

                return PluginServices.getText(this, "split_geometry_shell");

        }

        public void transition(double x, double y, InputEvent event) {

                try {

                        _fsm.addPoint(x, y, event);

                } catch (Exception e) {

                        init();

                }

        }

        public void transition(double d) {

                _fsm.addValue(d);

        }

        public void transition(String s) throws CommandException {

                if (!super.changeCommand(s)) {

                        _fsm.addOption(s);

                }

        }

}