| gvSIG desktop 1

/* 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

 */

package com.iver.cit.gvsig.gui.cad.tools;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.event.InputEvent;

import java.awt.geom.Point2D;

import com.iver.andami.PluginServices;

import com.iver.cit.gvsig.fmap.core.FShape;

import com.iver.cit.gvsig.fmap.core.ShapeFactory;

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

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.EllipseCADToolContext;

import com.iver.cit.gvsig.gui.cad.tools.smc.EllipseCADToolContext.EllipseCADToolState;

/**

 * DOCUMENT ME!

 *

 * @author Vicente Caballero Navarro

 */

public class EllipseCADTool extends DefaultCADTool {

    private EllipseCADToolContext _fsm;

    private Point2D startAxis;

    private Point2D endAxis;

    /**

     * Crea un nuevo LineCADTool.

     */

    public EllipseCADTool() {

    }

    /**

     * 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);

    }

    /* (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);

            }

    }

    /**

     * 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);

            addGeometry(ShapeFactory.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(Graphics g,double x,

        double y) {

        EllipseCADToolState actualState = _fsm.getState();

        String status = actualState.getName();

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

            drawLine((Graphics2D) g, startAxis, 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);

            ShapeFactory.createEllipse(startAxis, endAxis, distance).draw((Graphics2D) g,

                getCadToolAdapter().getMapControl().getViewPort(),

                CADTool.modifySymbol);

            Point2D mediop = new Point2D.Double((startAxis.getX() +

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

            drawLine((Graphics2D) g, mediop, third);

        }

    }

    /**

     * Add a diferent option.

     *

     * @param sel DOCUMENT ME!

     * @param s Diferent option.

     */

    public void addOption(String s) {

        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.gui.cad.CADTool#addvalue(double)

     */

    public void addValue(double d) {

        EllipseCADToolState actualState = (EllipseCADToolState) _fsm.getPreviousState();

        String status = actualState.getName();

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

            double distance = d;

            addGeometry(ShapeFactory.createEllipse(startAxis, endAxis, distance));

        }

    }

        public String getName() {

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

        }

        public String toString() {

                return "_ellipse";

        }

        public boolean isApplicable(int shapeType) {

                switch (shapeType) {

                case FShape.POINT:

                        return false;

                }

                return true;

        }

}