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 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;

import java.io.DataInputStream;

import java.io.EOFException;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStream;

/**

 * @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;

        int m;

        int s;

        int sgn = 1;

        double D;

        double M;

        double S;

        double lat;

        double 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

    }

}