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 javax.swing.JOptionPane;

import org.gvsig.andami.PluginServices;

import org.gvsig.app.ApplicationLocator;

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

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

import org.gvsig.editing.gui.cad.tools.smc.EllipseCADToolContext.EllipseCADToolState;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

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

import org.gvsig.fmap.mapcontrol.MapControlDrawer;

import org.gvsig.i18n.Messages;

/**

 * DOCUMENT ME!

 * 

 * @author Vicente Caballero Navarro

 */

public class EllipseCADTool extends AbstractSurfaceCADTool {

    protected EllipseCADToolContext _fsm;

    protected Point2D startAxis;

    protected Point2D endAxis;

    /**

     * M?todo de incio, 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 EllipseCADToolContext(this);

    }

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

        _fsm.addPoint(x, y, event);

    }

    public void transition(double d) {

        _fsm.addValue(d);

    }

    public void transition(String s) throws CommandException {

        if (!super.changeCommand(s)) {

            _fsm.addOption(s);

        }

    }

    /**

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

     * editableFeatureSource que ya estar? creado.

     * 

     * @param sel

     *            Bitset con las geometr?as que est?n seleccionadas.

     * @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) {

        EllipseCADToolState actualState =

            (EllipseCADToolState) _fsm.getPreviousState();

        String status = actualState.getName();

        if (status.equals("Ellipse.FirstPointAxis")) {

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

        } else

            if (status.equals("Ellipse.SecondPointAxis")) {

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

            } else

                if (status.equals("Ellipse.DistanceOtherAxis")) {

                    Point2D middle =

                        new Point2D.Double(

                            (startAxis.getX() + endAxis.getX()) / 2,

                            (startAxis.getY() + endAxis.getY()) / 2);

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

                    double distance = middle.distance(third);

                    insertAndSelectGeometry(createEllipse(startAxis, endAxis,

                        distance));

                }

    }

    /**

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

     * encontremos.

     * 

     * @param g

     *            Graphics sobre el que dibujar.

     * @param selectedGeometries

     *            BitSet con las geometr?as seleccionadas.

     * @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) {

        EllipseCADToolState actualState = _fsm.getState();

        String status = actualState.getName();

        if (status.equals("Ellipse.SecondPointAxis")) {

            renderer.drawLine(startAxis, new Point2D.Double(x, y),

                mapControlManager.getGeometrySelectionSymbol());

        } else

            if (status.equals("Ellipse.DistanceOtherAxis")) {

                Point2D middle =

                    new Point2D.Double((startAxis.getX() + endAxis.getX()) / 2,

                        (startAxis.getY() + endAxis.getY()) / 2);

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

                double distance = middle.distance(third);

                Ellipse ellipse = createEllipse(startAxis, endAxis, distance);

                Geometry help_geom_perim = null;

                try {

                    help_geom_perim = GeometryLocator.

                        getGeometryManager().createCurve(

                            ellipse.getGeneralPath(),

                            Geometry.SUBTYPES.GEOM2D);

                    renderer.draw(help_geom_perim,

                        mapControlManager.getAxisReferenceSymbol());

                } catch (Exception e) {

                    ApplicationLocator.getManager().message(

                        Messages.getText("_Unable_to_draw_help_geometry"),

                        JOptionPane.ERROR_MESSAGE);

                }  

                Point2D mediop =

                    new Point2D.Double((startAxis.getX() + endAxis.getX()) / 2,

                        (startAxis.getY() + endAxis.getY()) / 2);

                renderer.drawLine(mediop, third,

                    mapControlManager.getGeometrySelectionSymbol());

            }

    }

    /**

     * Add a diferent option.

     * 

     * @param sel

     *            DOCUMENT ME!

     * @param s

     *            Diferent option.

     */

    public void addOption(String s) {

        // TODO Auto-generated method stub

    }

    public void addValue(double d) {

        EllipseCADToolState actualState =

            (EllipseCADToolState) _fsm.getPreviousState();

        String status = actualState.getName();

        if (status.equals("Ellipse.DistanceOtherAxis")) {

            double distance = d;

            insertAndSelectGeometry(createEllipse(startAxis, endAxis, distance));

        }

    }

    public String getName() {

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

    }

    public String toString() {

        return "_ellipse";

    }

    @Override

    protected int getSupportedPrimitiveGeometryType() {

        return ELLIPSE;

    }

}