Application: gvSIG desktop

/*

 * Cresques Mapping Suite. Graphic Library for constructing mapping applications.

 * 

 * Copyright (C) 2004-5. 

 *

 * 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:

 * 

 * cresques@gmail.com

 */

package org.cresques.io;

import java.io.DataInputStream;

import java.io.EOFException;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStream;

import org.cresques.cts.ICoordTrans;

import org.cresques.cts.IProjection;

import org.cresques.px.IObjList;

import org.cresques.px.PxObjList;

import org.cresques.px.gml.LineString;

/**

 * @author luisw

 */

public class TrkFile  extends GeoFile {

        private DataInputStream is;

        long l = 0;

        LineString line;

        public TrkFile(IProjection proj, String name) {

                super(proj, name);

        }

        /* (no Javadoc)

         * @see org.cresques.io.GeoFile#load()

         */

        public GeoFile load() {

                try {

                        return load(new FileInputStream(name));

                } catch (NumberFormatException e) {

                        // TODO Bloque catch generado autom?ticamente

                        e.printStackTrace();

                } catch (FileNotFoundException e) {

                        // TODO Bloque catch generado autom?ticamente

                        e.printStackTrace();

                } catch (Exception e) {

                        // TODO Bloque catch generado autom?ticamente

                        e.printStackTrace();

                }

                return this;

        }

        public GeoFile load(InputStream is) throws NumberFormatException, Exception {

                System.out.println("Trk: Cargando '"+name+"' ...");

                this.is = new DataInputStream(is);

                line = new LineString();

                while (readPoint()) {

                        l++;

                }

                extent.add(line.getExtent());

                is.close();

                System.out.println("Trk: '"+name+"' cargado. ("+l+" puntos).");

                return this;

        }

        public boolean readPoint() {

                int        h, m, s, sgn = 1;

                double        D, M, S;

                double lat, lng;

                try {

                        h = is.readUnsignedByte();

                        m = is.readUnsignedByte();

                        s = is.readUnsignedByte();

                        is.skipBytes(1);

                        D = is.readUnsignedByte();

                        M = is.readByte();

                        S = is.readUnsignedShort();

                        S /= 1000.0;

                        if (M<0) {

                                sgn = -1;

                                M *= -1;

                        } else sgn = 1;

                        lat = sgn * (D + (M/60D+S/3600D));

                        D = is.readUnsignedByte();

                        M = is.readByte();

                        S = is.readUnsignedShort();

                        S /= 1000.0;

                        if (M<0) {

                                sgn = -1;

                                M *= -1;

                        } else sgn = 1;

                        lng = sgn * (D + (M/60D+S/3600D));

                        line.add(proj.createPoint(lng, lat));

                } catch (EOFException eof) {

                        return false;

                } catch (IOException e) {

                        // TODO Bloque catch generado autom?ticamente

                        e.printStackTrace();

                        return false;

                }

                return true;

        }

        /* (no Javadoc)

         * @see org.cresques.io.GeoFile#reProject(org.cresques.geo.ReProjection)

         */

        public IObjList getObjects() {

                IObjList oList = new PxObjList(proj);

                oList.add(line);

                return oList;

        }

        public void reProject(ICoordTrans rp) {

                line.reProject(rp);

                setProjection(rp.getPDest());

        }

        /* (non-Javadoc)

         * @see org.cresques.io.GeoFile#close()

         */

        public void close() {

                // TODO Auto-generated method stub

        }

}