| 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.geom.Point2D;

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

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

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

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

import com.iver.cit.gvsig.fmap.edition.UtilFunctions;

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

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

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

import com.iver.cit.gvsig.gui.cad.tools.smc.PolygonCADToolContext.PolygonCADToolState;

/**

 * DOCUMENT ME!

 *

 * @author Vicente Caballero Navarro

 */

public class PolygonCADTool extends DefaultCADTool {

    private PolygonCADToolContext _fsm;

    private Point2D center;

    private int numLines = 5;

    private boolean isI = true;

    /**

     * Crea un nuevo PolygonCADTool.

     */

    public PolygonCADTool() {

    }

    /**

     * 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);

    }

    /* (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) {

        _fsm.addPoint(x, y);

    }

    /* (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) {

        _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) {

        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) {

                addGeometry(getIPolygon(point, point.distance(center)));

            } else {

                addGeometry(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(Graphics g, double x,

        double y) {

        PolygonCADToolState actualState = _fsm.getState();

        String status = actualState.getName();

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

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

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

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

            drawLine((Graphics2D) g, center, point);

            if (isI) {

                getIPolygon(point, point.distance(center)).draw((Graphics2D) g,

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

                    CADTool.drawingSymbol);

            } else {

                getCPolygon(point, point.distance(center)).draw((Graphics2D) g,

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

                    CADTool.drawingSymbol);

            }

            ShapeFactory.createCircle(center, point.distance(center)).draw((Graphics2D) g,

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

                CADTool.modifySymbol);

        }

    }

    /**

     * 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.equals("C") || s.equals("c") || s.equals("Circunscrito")) {

                isI = false;

            } else if (s.equals("I") || s.equals("i") || s.equals("Inscrito")) {

                isI = true;

            }

        }

    }

    /* (non-Javadoc)

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

     */

    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) {

                addGeometry(getIPolygon(point, radio));

            } else {

                addGeometry(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 IGeometry getCPolygon(Point2D point, double radio) {

        IGeometry[] geoms = new IGeometry[numLines];

        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;

        for (int i = 1; i < (numLines + 2); 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) {

                GeneralPathX elShape = new GeneralPathX(GeneralPathX.WIND_EVEN_ODD,

                        2);

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

                elShape.lineTo(inter.getX(), inter.getY());

                geoms[i - 2] = (ShapeFactory.createPolyline2D(elShape));

            }

            antInter = inter;

            antPoint = p2;

        }

        return new FGeometryCollection(geoms);

    }

    /**

     * 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.

     */

    private IGeometry getIPolygon(Point2D point, double radio) {

        IGeometry[] geoms = new IGeometry[numLines];

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

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

        Point2D antPoint = p1;

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

        for (int i = 1; i < (numLines + 1); i++) {

            Point2D p2 = UtilFunctions.getPoint(center, (an * i) + initangle,

                    radio);

            GeneralPathX elShape = new GeneralPathX(GeneralPathX.WIND_EVEN_ODD,

                    2);

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

            elShape.lineTo(p2.getX(), p2.getY());

            geoms[i - 1] = (ShapeFactory.createPolyline2D(elShape));

            antPoint = p2;

        }

        return new FGeometryCollection(geoms);

    }

}