/*
This file is part of RouteConverter.
RouteConverter 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.
RouteConverter 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 RouteConverter; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Copyright (C) 2007 Christian Pesch. All Rights Reserved.
*/
package slash.navigation.wbt;
import slash.navigation.base.BaseNavigationPosition;
import slash.navigation.base.Wgs84Route;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.List;
import static java.lang.Math.abs;
import static java.nio.ByteOrder.LITTLE_ENDIAN;
import static java.util.Calendar.YEAR;
/**
* Reads and writes Wintec WBT-202 (.tes) files.
* <p/>
* Format is basically {@link WintecWbt201Tk2Format) without a 16 byte header as described at:
* http://www.geosetter.de/mantis/view.php?id=373
*
* @author Malte Neumann
*/
public class WintecWbt202TesFormat extends WintecWbt201Format {
public String getExtension() {
return ".tes";
}
public String getName() {
return "Wintec WBT-202 (*" + getExtension() + ")";
}
protected int getHeaderSize() {
// this means files with less than 3 positions are not recognized
return 3 * 16;
}
protected boolean checkFormatDescriptor(ByteBuffer buffer) throws IOException {
buffer.order(LITTLE_ENDIAN);
buffer.position(0);
// read first positions and validate the data
BaseNavigationPosition previousPosition = null;
while ((buffer.position() + 16) < buffer.capacity()) { //16: one Record
/*short trackFlag*/
buffer.getShort();
int time = buffer.getInt();
int latitude = buffer.getInt();
int longitude = buffer.getInt();
short altitude = buffer.getShort();
BaseNavigationPosition position = createWaypoint(time, latitude, longitude, altitude, 1, false);
boolean valid = position.getLatitude() < 90.0 && position.getLatitude() > -90.0 &&
position.getLongitude() < 180.0 && position.getLongitude() > -180.0 &&
position.getElevation() < 15000.0 &&
abs(position.getLatitude()) > 0.00001 &&
abs(position.getLongitude()) > 0.00001 &&
position.getTime().getCalendar().get(YEAR) > 1990;
if (valid && previousPosition != null) {
Double speed = position.calculateSpeed(previousPosition);
valid = speed != null && speed < 1500.0 &&
previousPosition.getTime().getTimeInMillis() < position.getTime().getTimeInMillis();
}
if (!valid)
return false;
previousPosition = position;
}
return true;
}
protected List<Wgs84Route> internalRead(ByteBuffer buffer) {
return readPositions(buffer, 0, buffer.capacity());
}
}