Application: gvSIG desktop

/* 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 org.gvsig.data.datastores.vectorial.file.shp.utils;

import java.awt.geom.PathIterator;

import java.nio.ByteBuffer;

import java.nio.MappedByteBuffer;

import org.gvsig.datasources.common.IByteBuffer;

import org.gvsig.fmap.geom.Geometry;

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

import org.gvsig.fmap.geom.primitive.Point2D;

/**

 * DOCUMENT ME!

 * 

 * @author Vicente Caballero Navarro

 */

public class SHPPoint implements SHPShape {

        private int m_type;

        private Point2D point;

        private double z;

        /**

         * Crea un nuevo SHPPoint.

         * 

         * @param type

         *            DOCUMENT ME!

         * 

         * @throws ShapefileException

         *             DOCUMENT ME!

         */

        public SHPPoint(int type) {

                if ((type != SHP.POINT2D) && (type != SHP.POINTM)

                                && (type != SHP.POINT3D)) { // 2d, 2d+m, 3d+m

                // throw new ShapefileException("No es un punto 1,11 ni 21");

                }

                m_type = type;

        }

        /**

         * Crea un nuevo SHPPoint.

         */

        public SHPPoint() {

                m_type = SHP.POINT2D; // 2d

        }

        /**

         * @see com.iver.cit.gvsig.fmap.shp.SHPShape#getShapeType()

         */

        public int getShapeType() {

                return m_type;

        }

        /**

         * @see com.iver.cit.gvsig.fmap.shp.SHPShape#read(MappedByteBuffer, int)

         */

        public Geometry read(MappedByteBuffer buffer, int type) {

                double x = buffer.getDouble();

                double y = buffer.getDouble();

                double z = Double.NaN;

                if (m_type == SHP.POINTM) {

                        buffer.getDouble();

                }

                if (m_type == SHP.POINT3D) {

                        z = buffer.getDouble();

                }

                return (Geometry) new Point2D(x, y);

        }

        /**

         * @see com.iver.cit.gvsig.fmap.shp.SHPShape#write(ByteBuffer, IGeometry)

         */

        public void write(IByteBuffer buffer, Geometry geometry) {

                // FPoint2D p2d = ((FPoint2D) geometry.getShape());

                // /obtainsPoints(geometry.getGeneralPathXIterator());

                buffer.putDouble(point.getX());

                buffer.putDouble(point.getY());

                if (m_type == SHP.POINT3D) {

                        if (Double.isNaN(z)) { // nan means not defined

                                buffer.putDouble(0.0);

                        } else {

                                buffer.putDouble(z);

                        }

                }

                if ((m_type == SHP.POINT3D) || (m_type == SHP.POINTM)) {

                        buffer.putDouble(-10E40); // M

                }

        }

        /**

         * @see com.iver.cit.gvsig.fmap.shp.SHPShape#getLength(int)

         */

        public int getLength(Geometry fgeometry) {

                int length;

                if (m_type == SHP.POINT2D) {

                        length = 20;

                } else if (m_type == SHP.POINTM) {

                        length = 28;

                } else if (m_type == SHP.POINT3D) {

                        length = 36;

                } else {

                        throw new IllegalStateException("Expected ShapeType of Point, got"

                                        + m_type);

                }

                return length;

        }

        /**

         * @see com.iver.cit.gvsig.fmap.drivers.shp.write.SHPShape#obtainsPoints(com.iver.cit.gvsig.fmap.core.GeneralPathXIterator)

         */

        public void obtainsPoints(Geometry g) {

                if (SHP.POINT3D == m_type) {

                        z = ((AbstractPrimitive) g).getZs()[0];

                }

                PathIterator theIterator = g.getPathIterator(null); // polyLine.getPathIterator(null,

                                                                                                                        // flatness);

                double[] theData = new double[6];

                while (!theIterator.isDone()) {

                        // while not done

                        int theType = theIterator.currentSegment(theData);

                        point = new Point2D(theData[0], theData[1]);

                        theIterator.next();

                } // end while loop

        }

        // public void setFlatness(double flatness) {

        // // this.flatness=flatness;

        // }

}