Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * 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., 51 Franklin Street, Fifth Floor, Boston, 

 * MA  02110-1301, USA.

 * 

 */

package org.gvsig.editing.gui.cad.tools;

import java.awt.event.InputEvent;

import java.awt.geom.Point2D;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.messages.NotificationManager;

import org.gvsig.editing.CADExtension;

import org.gvsig.editing.gui.cad.DefaultCADTool;

import org.gvsig.editing.gui.cad.exception.CommandException;

import org.gvsig.editing.gui.cad.tools.smc.SymmetryCADToolContext;

import org.gvsig.editing.gui.cad.tools.smc.SymmetryCADToolContext.SymmetryCADToolState;

import org.gvsig.editing.layers.VectorialLayerEdited;

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

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

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

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

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

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

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

import org.gvsig.fmap.dal.feature.exception.CreateGeometryException;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.handler.Handler;

import org.gvsig.fmap.geom.operation.perpendicular.Perpendicular;

import org.gvsig.fmap.geom.operation.perpendicular.PerpendicularOperationContext;

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

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

import org.gvsig.fmap.geom.type.GeometryType;

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

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontrol.MapControlDrawer;

import org.gvsig.i18n.Messages;

import org.gvsig.tools.dispose.DisposableIterator;

/**

 * Herramienta para crear una geometr?a sim?trica a otra, con la posibilidad de

 * borrar la original.

 * 

 * @author Vicente Caballero Navarro

 */

public class SymmetryCADTool extends DefaultCADTool {

    protected SymmetryCADToolContext _fsm;

    protected Point2D firstPoint;

    protected Point2D secondPoint;

    /**

     * M?todo de inicio, para poner el c?digo de todo lo que se requiera de una

     * carga previa a la utilizaci?n de la herramienta.

     */

    public void init() {

        _fsm = new SymmetryCADToolContext(this);

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * com.iver.cit.gvsig.gui.cad.CADTool#transition(com.iver.cit.gvsig.fmap

     * .layers.FBitSet,

     * double, double)

     */

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

        _fsm.addPoint(x, y, event);

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * com.iver.cit.gvsig.gui.cad.CADTool#transition(com.iver.cit.gvsig.fmap

     * .layers.FBitSet,

     * double)

     */

    public void transition(double d) {

        _fsm.addValue(d);

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * com.iver.cit.gvsig.gui.cad.CADTool#transition(com.iver.cit.gvsig.fmap

     * .layers.FBitSet,

     * java.lang.String)

     */

    public void transition(String s) throws CommandException {

        // if (!super.changeCommand(s)) {

        _fsm.addOption(s);

        // }

    }

    /**

     * DOCUMENT ME!

     */

    public void selection() {

        FeatureSet selection = null;

        try {

            selection = (FeatureSet) getVLE().getFeatureStore().getSelection();

            if (selection.getSize() == 0

                && !CADExtension

                    .getCADTool()

                    .getClass()

                    .getName()

                    .equals("com.iver.cit.gvsig.gui.cad.tools.SelectionCADTool")) {

                CADExtension.setCADTool("_selection", false);

                ((SelectionCADTool) CADExtension.getCADTool())

                    .setNextTool("_symmetry");

            }

        } catch (ReadException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (DataException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

    /**

     * Equivale al transition del prototipo pero sin pasarle como par?metro el

     * editableFeatureSource que ya estar? creado.

     * 

     * @param x

     *            par?metro x del punto que se pase en esta transici?n.

     * @param y

     *            par?metro y del punto que se pase en esta transici?n.

     */

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

        SymmetryCADToolState actualState =

            (SymmetryCADToolState) _fsm.getPreviousState();

        String status = actualState.getName();

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

            firstPoint = new Point2D.Double(x, y);

        } else

            if (status.equals("Symmetry.SecondPoint")) {

                secondPoint = new Point2D.Double(x, y);

            }

    }

    /**

     * M?todo para dibujar la lo necesario para el estado en el que nos

     * encontremos.

     * 

     * @param g

     *            Graphics sobre el que dibujar.

     * @param x

     *            par?metro x del punto que se pase para dibujar.

     * @param y

     *            par?metro x del punto que se pase para dibujar.

     */

    public void drawOperation(MapControlDrawer renderer, double x, double y) {

        SymmetryCADToolState actualState = _fsm.getState();

        String status = actualState.getName();

        if (status.equals("Symmetry.SecondPoint")) {

            Point2D pAux = new Point2D.Double(x, y);

            drawSymmetry(renderer, pAux);

        } else

            if (status.equals("Symmetry.CutOrCopy")) {

                drawSymmetry(renderer, secondPoint);

            }

    }

    private void drawSymmetry(MapControlDrawer renderer, Point2D pAux) {

        VectorialLayerEdited vle = getVLE();

        FeatureSet selection = null;

        try {

            selection = (FeatureSet) vle.getFeatureStore().getSelection();

        } catch (ReadException e1) {

            // TODO Auto-generated catch block

            e1.printStackTrace();

        } catch (DataException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        ViewPort vp = vle.getLayer().getMapContext().getViewPort();

        GeneralPathX gpx = new GeneralPathX();

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

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

        renderer.draw(createCurve(gpx),

            mapControlManager.getAxisReferenceSymbol());

        DisposableIterator iterator = null;

        try {

            iterator = selection.iterator();

            while (iterator.hasNext()) {

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

                // }

                // for (int i = 0; i < selectedRow.size(); i++) {

                // DefaultRowEdited row=(DefaultRowEdited) selectedRow.get(i);

                // DefaultFeature fea = (DefaultFeature) row.getLinkedRow();

                Geometry geom = (feature.getDefaultGeometry()).cloneGeometry();

                Handler[] handlers = geom.getHandlers(Geometry.SELECTHANDLER);

                for (int j = 0; j < handlers.length; j++) {

                    Handler h = handlers[j];

                    Point2D p = h.getPoint();

                    Point2D[] ps =

                        UtilFunctions.getPerpendicular(firstPoint, pAux, p);

                    Point2D inter =

                        UtilFunctions.getIntersection(ps[0], ps[1], firstPoint,

                            pAux);

                    if (inter != null) {

                        Point2D dif =

                            new Point2D.Double(inter.getX() - p.getX(),

                                inter.getY() - p.getY());

                        h.set(inter.getX() + dif.getX(),

                            inter.getY() + dif.getY());

                    }

                }

                renderer.draw(geom, mapControlManager.getAxisReferenceSymbol());

            }

        } catch (DataException e1) {

            // TODO Auto-generated catch block

            e1.printStackTrace();

        } finally {

            if (iterator != null) {

                iterator.dispose();

            }

        }

    }

    /**

     * Add a diferent option.

     * 

     * @param s

     *            Diferent option.

     */

    public void addOption(String s) {

        if (s.equals(Messages.getText("cancel"))) {

            refresh();

            /*

             * Nothing to do

             */

            return;

        }

        SymmetryCADToolState actualState =

            (SymmetryCADToolState) _fsm.getPreviousState();

        String status = actualState.getName();

        VectorialLayerEdited vle = getVLE();

        FeatureStore featureStore = null;

        FeatureSelection selection = null;

        try {

            featureStore = vle.getFeatureStore();

            selection = featureStore.getFeatureSelection();

        } catch (DataException e1) {

            NotificationManager.addError(e1.getMessage(), e1);

            return;

        }

        // ArrayList selectedRowAux=new ArrayList();

        // VectorialEditableAdapter vea = vle.getVEA();

        if (status.equals("Symmetry.CutOrCopy")) {

            PluginServices.getMDIManager().setWaitCursor();

            DisposableIterator iterator = null;

            try {

                featureStore.beginEditingGroup(getName());

                // If not moved, deselect the previous features to select the new ones

                try {

                        FeatureSelection newSelection =

                            featureStore.createFeatureSelection();

                    iterator = selection.iterator();

                    while (iterator.hasNext()) {

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

                        Geometry geom =

                            feature.getDefaultGeometry().cloneGeometry();

                        Handler[] handlers =

                            geom.getHandlers(Geometry.SELECTHANDLER);

                        for (int j = 0; j < handlers.length; j++) {

                            Handler h = handlers[j];

                            Point2D p = h.getPoint();

                            Point2D[] ps = getPerpendicularLine(

                                firstPoint, secondPoint, p);

                            Point2D inter =

                                UtilFunctions.getIntersection(ps[0], ps[1],

                                    firstPoint, secondPoint);

                            Point2D dif =

                                new Point2D.Double(inter.getX() - p.getX(),

                                    inter.getY() - p.getY());

                            h.set(inter.getX() + dif.getX(),

                                inter.getY() + dif.getY());

                        }

                        // geom.invokeOperation(index, ctx)

                        String yes_low_case =

                            Messages.getText("SymmetryCADTool.yes").toLowerCase();

                        String yes_up_case = yes_low_case.toUpperCase(); 

                        if (s.equals(PluginServices.getText(this, "cut"))

                            || s.equals(yes_low_case) || s.equals(yes_up_case)) {

                            EditableFeature eFeature = feature.getEditable();

                            eFeature.setGeometry(featureStore

                                .getDefaultFeatureType()

                                .getDefaultGeometryAttributeName(), geom);

                            featureStore.update(eFeature);

                            newSelection.select(feature);

                        } else {

                            Feature newFeature = insertGeometry(geom);

                            newSelection.select(newFeature);

                        }

                        refresh();

                    }

                    featureStore.setSelection(newSelection);

                } finally {

                    featureStore.endEditingGroup();

                }

            } catch (DataException e) {

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

            } finally {

                if (iterator != null) {

                    iterator.dispose();

                }

                PluginServices.getMDIManager().restoreCursor();

            }

        }

    }

    public void addValue(double d) {

    }

    public String getName() {

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

    }

    public String toString() {

        return "_symmetry";

    }

    @Override

    public boolean isApplicable(GeometryType geometryType) {

        return true;

    }

    @Override

    protected int[] getSupportedGeometryTypes() {

        return null;

    }

    private Point2D[] getPerpendicularLine(

        Point2D p1, Point2D p2, Point2D pp) throws CreateGeometryException {

        try {

            Point g_p1 = geomManager.createPoint(

                p1.getX(), p1.getY(), Geometry.SUBTYPES.GEOM2D); 

            Point g_p2 = geomManager.createPoint(

                p2.getX(), p2.getY(), Geometry.SUBTYPES.GEOM2D); 

            Point g_pp = geomManager.createPoint(

                pp.getX(), pp.getY(), Geometry.SUBTYPES.GEOM2D); 

            PerpendicularOperationContext poc = new PerpendicularOperationContext(

                g_p2, g_pp);

            Point[] res = (Point[]) g_p1.invokeOperation(

                Perpendicular.CODE, poc);

            Point2D[] resp = new Point2D[2];

            resp[0] = new Point2D.Double(res[0].getX(), res[0].getY());

            resp[1] = new Point2D.Double(res[1].getX(), res[1].getY());

            return resp;

        } catch (Exception ex) {

            throw new CreateGeometryException(

                Geometry.TYPES.POINT,

                Geometry.SUBTYPES.GEOM2D,

                ex);

        }

    }

}