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/**
* Title: iSIM
* Copyright: Copyright (c) 2002
* Company: University of Oregon Computer Science Dept.
*
* @author Jason Prideaux
* @version 1.0
*
*/
import gps_monitor.gui.*;
import gps_monitor.gps.*;
import gps_monitor.util.*;
import java.awt.*;
import java.awt.event.*;
import java.util.GregorianCalendar;
import java.util.TooManyListenersException;
import java.io.IOException;
import javax.comm.*;
/* ====================================================================== */
/** This class is for running the GpsMonitor iPAQ Application.
*
*/
public class GpsMonitor{
/** */
private GpsMonitorUI monitorUI;
/** */
private GpsGenerator gps;
/** */
private Position chart_pos; //the current position
/** */
private ChartData chartdata; // current chart
/**
* Constructor that creates an instance of GpsMonitor. This is achieved
* by creating a NmeaSerialGps object to deal with input from the GPS
* receiver, and creating a GUI (GpsMonitorUI) that will display the
* results.
*
* @param user The object/gps device we are monitoring
* @see locationUtils.GpsMonitorUI
* @see NmeaSerialGps
*/
public GpsMonitor(String user, String inputPort, boolean sim, int port){
//Set up the UI for the gps display
monitorUI = new GpsMonitorUI(user, sim);
//read in the chart for displaying the gps map location
chart_pos = new Position();
readData("files/data/charts.dat");
monitorUI.changeChart(chartdata.imgFileName,10,-1);
try{
if(sim){
gps = new NmeaSocketGps(monitorUI, port);
}else{
gps = new NmeaSerialGps(inputPort, 9600, monitorUI);
}
//Handle exceptions that can be thrown by creating a NmeaSerialGps
}catch (PortInUseException e){
System.out.println("PortInUseException: The chosen input port is already in use.");
}catch (IOException e){
System.out.println("IOException: Could not create an InputStream on the input port.");
}catch (TooManyListenersException e){
System.out.println("TooManyListenersException: Cannot add another listener to the input port.");
}catch (UnsupportedCommOperationException e){
System.out.println("UnsupportedCommOperationException: Could not specify the settings for the input port."+e);
}
try{
//I really only care about coordinates and heading, maybe speed for later
//Relay the data received to the UI//Relay the data received to the UI
monitorUI.setLatitude(gps.getLatitude().toStringDDMM());
monitorUI.setLongitude(gps.getLongitude().toStringDDMM());
monitorUI.setHeading(gps.getTrueHeading());
LatOrLongitude lat = gps.getLatitude();
LatOrLongitude lon = gps.getLongitude();
}catch (NullPointerException e){
System.out.println("Initialisation poll failed.");
}
//show the UI
monitorUI.setVisible(true);
//start the thread to check for gps updates
runMonitor();
} //Constructor
/**
* This loop continues polling the widget until the application is shut down.
*/
private void runMonitor(){
while (true){
try{
Thread.sleep(3000);
}catch(Exception e){System.out.println(e);}
//check for new gps values
pollGps();
} //while
} //method:
/**
* This method updates the GUI with the latest values available from the GPS.
*/
private void pollGps(){
try{
//Relay the data received to the UI//Relay the data received to the UI
//I really only care about coordinates and heading, maybe speed for later
//update our gps position on the display chart in the UI
LatOrLongitude lat = gps.getLatitude();
LatOrLongitude lon = gps.getLongitude();
chart_pos.lat = ((int)lat.getDegrees())*60 + lat.getMinutes();
chart_pos.lng = (((int)lon.getDegrees())*-60) + lon.getMinutes()+60;
Point p = chartdata.transPos(chart_pos);
monitorUI.updatePos(p,chartdata.transPos(calcPred(chart_pos)));
//now set the values in the UI
monitorUI.setLatitude(lat.toStringDDMM());
monitorUI.setLongitude(lon.toStringDDMM());
//monitorUI.setAltitude(new Double(gps.getAltitude()));
//monitorUI.setLastUpdate(new Long (gps.getTimeLastLocationUpdate()));
//monitorUI.setStatus(gps.getStatus());
//monitorUI.setSpeed(new Double(gps.getSpeed()));
monitorUI.setHeading(gps.getTrueHeading());
//String osRef = LocationConverter.geospatialToOSGB(lat, lon);
//monitorUI.setOSReference(osRef);
//monitorUI.setUTMReference(LocationConverter.geospatialToUTM(lat, lon));
//monitorUI.setPresentAccuracy(new Double(gps.getPresentHorizontalAccuracy()));
}catch (NullPointerException e){
//e.printStackTrace();
//System.out.println(e);
}
} //method: pollGps
/**
* The main method that creates an instance of GpsMontior according to a command-line
* argument. The argument specifies the name of the object that is being tracked.
*/
public static void main (String argv[]){
int port = 2323;
boolean sim = CommandLine.isArg(argv, 's');
if(sim){
port = Integer.parseInt( CommandLine.getArg(argv,"s","2323") );
}
GpsMonitor sa = new GpsMonitor("Easy GPS", "COM5:", sim, port);
}
/** Read calibration data from file. */
private void readData(String file_name){
chartdata = null;
FileLineReader in=new FileLineReader(file_name);
try{
while(true){
String str=in.readLine();
if (str==null) break;
if (str.length()==0){
}else if (str.startsWith("name")){
chartdata=ChartData.loadChartData(in,ChartWord.skipWords(str,1));
}else if (str.startsWith("begin")){
chartdata=ChartData.loadChartData(in,null);
}
} //while
in.close();
}catch (IOException e) {}
catch (NumberFormatException e) {}
} //method:
/**
* Calculate where we will be in <predScale> seconds with current
* speed and direction.
*/
private Position calcPred(Position pos)
{
Position pred=new Position();
double r=120*pos.speed/3600;
pred.lng=pos.lng+r*Math.sin(Math.PI*pos.track/180)/Math.cos(Math.PI*pos.lat/(180*60));
pred.lat=pos.lat+r*Math.cos(Math.PI*pos.track/180);
return(pred);
}
} //class: GpsMonitor
]]>