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.exception.ValueException;

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

import org.gvsig.editing.gui.cad.tools.smc.PolygonCADToolContext.PolygonCADToolState;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

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

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

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

import org.gvsig.fmap.mapcontrol.MapControlDrawer;

import org.gvsig.i18n.Messages;

import org.gvsig.tools.locator.LocatorException;

/**

 * DOCUMENT ME!

 * 

 * @author Vicente Caballero Navarro

 */

public class PolygonCADTool extends AbstractCurveSurfaceCADTool {

    protected PolygonCADToolContext _fsm;

    protected Point2D center;

    protected int numLines = 5;

    protected boolean isI = true;

    /**

     * 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 PolygonCADToolContext(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) {

        PolygonCADToolState actualState =

            (PolygonCADToolState) _fsm.getPreviousState();

        String status = actualState.getName();

        if (status.equals("Polygon.NumberOrCenterPoint")) {

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

        } else

            if (status.equals("Polygon.CenterPoint")) {

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

            } else

                if (status.equals("Polygon.OptionOrRadiusOrPoint")

                    || status.equals("Polygon.RadiusOrPoint")) {

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

                    // Pol?gono a partir de la circunferencia.

                    if (isI) {

                        insertAndSelectGeometry(getIPolygon(point,

                            point.distance(center)));

                    } else {

                        insertAndSelectGeometry(getCPolygon(point,

                            point.distance(center)));

                    }

                }

    }

    /**

     * 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) {

        PolygonCADToolState actualState = _fsm.getState();

        String status = actualState.getName();

        if (status.equals("Polygon.OptionOrRadiusOrPoint")

            || status.equals("Polygon.RadiusOrPoint")) {

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

            renderer.drawLine(center, point,

                mapControlManager.getGeometrySelectionSymbol());

            Geometry help_geom = null;

            Geometry help_geom_perim = null;

            /*

             * Get helping polygon

             */

            if (isI) {

                help_geom = getIPolygon(point, point.distance(center));

            } else {

                help_geom = getCPolygon(point, point.distance(center));

            }

            /*

             * Get and draw perimeter of polygon

             */

            try {

                help_geom_perim = GeometryLocator.

                    getGeometryManager().createCurve(

                        help_geom.getGeneralPath(),

                        Geometry.SUBTYPES.GEOM2D);

                renderer.draw(help_geom_perim,

                    mapControlManager.getGeometrySelectionSymbol());

            } catch (Exception e) {

                ApplicationLocator.getManager().message(

                    Messages.getText("_Unable_to_draw_help_geometry"),

                    JOptionPane.ERROR_MESSAGE);

            }

            /*

             * Create circle

             */

            help_geom = createCircle(center, point.distance(center));

            /*

             * Get and draw perimeter of circle

             */

            try {

                help_geom_perim = GeometryLocator.

                    getGeometryManager().createCurve(

                        help_geom.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);

            }

        }

    }

    /**

     * Add a diferent option.

     * 

     * @param sel

     *            DOCUMENT ME!

     * @param s

     *            Diferent option.

     */

    public void addOption(String s) {

        PolygonCADToolState actualState =

            (PolygonCADToolState) _fsm.getPreviousState();

        String status = actualState.getName();

        if (status.equals("Polygon.OptionOrRadiusOrPoint")) {

            if (s.equalsIgnoreCase(PluginServices.getText(this,

                "PolygonCADTool.circumscribed"))

                || s.equals(PluginServices.getText(this, "circumscribed"))) {

                isI = false;

            } else

                if (s.equalsIgnoreCase(PluginServices.getText(this,

                    "PolygonCADTool.into_circle"))

                    || s.equals(PluginServices.getText(this, "into_circle"))) {

                    isI = true;

                }

        }

    }

    public void addValue(double d) {

        PolygonCADToolState actualState =

            (PolygonCADToolState) _fsm.getPreviousState();

        String status = actualState.getName();

        if (status.equals("Polygon.NumberOrCenterPoint")) {

            numLines = (int) d;

        } else

            if (status.equals("Polygon.OptionOrRadiusOrPoint")

                || status.equals("Polygon.RadiusOrPoint")) {

                double radio = d;

                // Pol?gono a partir de radio.

                Point2D point =

                    UtilFunctions.getPoint(center,

                        new Point2D.Double(center.getX(), center.getY() + 10),

                        radio);

                if (isI) {

                    insertAndSelectGeometry(getIPolygon(point, radio));

                } else {

                    insertAndSelectGeometry(getCPolygon(point, radio));

                }

            }

    }

    /**

     * Devuelve la geometr?a con el poligono regular circunscrito a la

     * circunferencia formada por el punto central y el radio que se froma

     * entre este y el puntero del rat?n..

     * 

     * @param point

     *            Puntero del rat?n.

     * @param radio

     *            Radio

     * 

     * @return GeometryCollection con las geometr?as del pol?gono.

     */

    private Geometry getCPolygon(Point2D point, double radio) {

        Point2D p1 = UtilFunctions.getPoint(center, point, radio);

        double initangle = UtilFunctions.getAngle(center, point);

        Point2D antPoint = p1;

        Point2D antInter = null;

        double an = (Math.PI * 2) / numLines;

        boolean firstTime = true;

        OrientablePrimitive orientablePrimitive = createOrientablePrimitive();

        for (int i = numLines - 1; i >= 0; i--) {

            Point2D p2 =

                UtilFunctions.getPoint(center, (an * i) + initangle, radio);

            Point2D[] ps1 =

                UtilFunctions.getPerpendicular(antPoint, center, antPoint);

            Point2D[] ps2 = UtilFunctions.getPerpendicular(p2, center, p2);

            Point2D inter =

                UtilFunctions.getIntersection(ps1[0], ps1[1], ps2[0], ps2[1]);

            if (antInter != null) {

                if (firstTime) {

                    orientablePrimitive.addMoveToVertex(createPoint(

                        antInter.getX(), antInter.getY()));

                    firstTime = false;

                }

                orientablePrimitive.addVertex(createPoint(inter.getX(),

                    inter.getY()));

            }

            antInter = inter;

            antPoint = p2;

        }

        orientablePrimitive.closePrimitive();

        return orientablePrimitive;

    }

    /**

     * Devuelve la geometr?a con el poligono regular inscrito en la

     * circunferencia.

     * 

     * @param point

     *            Puntero del rat?n.

     * @param radio

     *            Radio

     * 

     * @return GeometryCollection con las geometr?as del pol?gono.

     * @throws ValueException

     */

    private Geometry getIPolygon(Point2D point, double radio) {

        Point2D p1 = UtilFunctions.getPoint(center, point, radio);

        double initangle = UtilFunctions.getAngle(center, point);

        Point2D antPoint = p1;

        double an = (Math.PI * 2) / numLines;

        boolean firstTime = true;

        OrientablePrimitive orientablePrimitive = createOrientablePrimitive();

        for (int i = numLines - 1; i > 0; i--) {

            Point2D p2 =

                UtilFunctions.getPoint(center, (an * i) + initangle, radio);

            if (firstTime) {

                orientablePrimitive.addMoveToVertex(createPoint(

                    antPoint.getX(), antPoint.getY()));

                firstTime = false;

            }

            orientablePrimitive.addVertex(createPoint(p2.getX(), p2.getY()));

            antPoint = p2;

        }

        orientablePrimitive.closePrimitive();

        return orientablePrimitive;

    }

    public String getName() {

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

    }

    /**

     * Devuelve la cadena que corresponde al estado en el que nos encontramos.

     * 

     * @return Cadena para mostrar por consola.

     */

    public String getQuestion() {

        PolygonCADToolState actualState = _fsm.getState();

        String status = actualState.getName();

        if (status.equals("Polygon.NumberOrCenterPoint")) {

            return super.getQuestion() + "<" + numLines + ">";

        }

        return super.getQuestion();

    }

    public String toString() {

        return "_polygon";

    }

}