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.app.project.documents.layout.geometryadapters;

import java.awt.Graphics2D;

import java.awt.geom.AffineTransform;

import java.awt.geom.Point2D;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.Geometry.SUBTYPES;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

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

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

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.persistence.PersistenceManager;

/**

 * DOCUMENT ME!

 * 

 * @author Vicente Caballero Navarro

 */

public class PolygonAdapter extends PolyLineAdapter {

    public static final String PERSISTENCE_DEFINITION_NAME = "PolygonAdapter";

    private static final GeometryManager geomManager = GeometryLocator

        .getGeometryManager();

    private static final Logger logger = LoggerFactory

        .getLogger(PolygonAdapter.class);

    public PolygonAdapter() {

        super();

    }

    /**

     * DOCUMENT ME!

     * 

     * @param p

     *            DOCUMENT ME!

     */

    public void obtainShape(Point2D p) {

        Point2D[] points = getPoints();

        GeneralPathX elShape =

            new GeneralPathX(GeneralPathX.WIND_EVEN_ODD, points.length);

        if (points.length > 0) {

            elShape.moveTo(((Point2D) points[0]).getX(),

                ((Point2D) points[0]).getY());

        }

        for (int i = 1; i < points.length; i++) {

            elShape.lineTo(((Point2D) points[i]).getX(),

                ((Point2D) points[i]).getY());

        }

        if (points.length > 0) {

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

            elShape.lineTo(((Point2D) points[0]).getX(),

                ((Point2D) points[0]).getY());

        }

        setGPX(elShape);

    }

    /**

     * DOCUMENT ME!

     * 

     * @return DOCUMENT ME!

     */

    public Geometry getGeometry() {

        try {

            return geomManager.createSurface(getGPX(), SUBTYPES.GEOM2D);

        } catch (CreateGeometryException e) {

            logger.error("Error creating a surface", e);

        }

        return null;

    }

    /**

     * DOCUMENT ME!

     * 

     * @param g

     *            DOCUMENT ME!

     * @param at

     *            DOCUMENT ME!

     * @param symbol

     *            DOCUMENT ME!

     */

    public void draw(Graphics2D g, AffineTransform at, ISymbol symbol) {

        GeneralPathX rectangle =

            new GeneralPathX(getGeometry().getPathIterator(null));

        rectangle.transform(at);

        Geometry shapeAux;

        try {

            shapeAux = geomManager.createSurface(rectangle, SUBTYPES.GEOM2D);

            symbol.draw(g, at, shapeAux, null, null);

        } catch (CreateGeometryException e) {

            logger.error("Error creating a surface", e);

        }

    }

    public static void registerPersistent() {

        PersistenceManager manager = ToolsLocator.getPersistenceManager();

        if (manager.getDefinition(PERSISTENCE_DEFINITION_NAME) == null) {

            DynStruct definition =

                manager.addDefinition(PolygonAdapter.class,

                    PERSISTENCE_DEFINITION_NAME,

                    "Polygon Adapter persistence definition", null, null);

            definition.extend(manager

                .getDefinition(GeometryAdapter.PERSISTENCE_DEFINITION_NAME));

        }

    }

}