waypoint103.java

基于Java的地图数据管理软件。使用MySQL数据库管理系统。

package net.aetherial.gis.garmin;

import java.io.*;
import java.util.*;
import net.aetherial.gis.garmin.*;

class Waypoint103 extends Waypoint
{
	private MapSymbol symbol;
	private Position position;
	private String identifier;
	private String comment;
	private byte dspl;

	public Waypoint103 (byte[] contents)
	{
		ByteArrayInputStream bais = new ByteArrayInputStream (contents);

                try
                {
                        byte[] ident = new byte[6];
                        for (int i = 0; i < 6; i++)
                        {
                                ident[i] = (byte) bais.read ();
                        }

                        identifier = new String (ident, 0, ident.length, "US-ASCII");
                }
                catch (UnsupportedEncodingException e)
                {
                        identifier = new String ("");
                }

		byte[] latByte = new byte[4];
		for (int i = 0; i < latByte.length; i++)
			latByte[i] = (byte) bais.read ();

		byte[] longByte = new byte [4];
		for (int i = 0; i < longByte.length; i++)
			longByte[i] = (byte) bais.read();

		position = new Position (toLongInt(latByte), toLongInt (longByte));

		bais.read();
		bais.read();
		bais.read();
		bais.read();

		try
		{
			byte[] coBytes = new byte[40];
			for (int i = 0; i < 40; i++)
			{
				coBytes[i] = (byte) bais.read ();
			}
			comment = new String (coBytes, 0, coBytes.length, "US-ASCII");
		}
		catch (UnsupportedEncodingException e)
		{
			comment = new String ("");
		}

		byte symbolByte[] = new byte[2];
		symbolByte[0] = (byte) 0;
		symbolByte[1] = (byte) bais.read ();
		symbol = new MapSymbol (symbolByte);

		dspl = (byte) bais.read ();

		try
		{
			bais.close ();
		}
		catch (IOException e)
		{

		}

		GarminGMLDoc.getDocument ();
		GarminGMLDoc.addWaypoint (this);
	}

	public void printDetails ()
	{
//		System.out.println ("This is a debugging tool for dumping waypoint details.");
//		System.out.println ("Waypoint Symbol:             "+symbol.getMapSymbol ());
//		System.out.println ("Waypoint Position:           "+position.getDoubleDegreeLatitude()+position.getLatOrientChar ()+", "+position.getDoubleDegreeLongitude()+position.getLongOrientChar ());
//		System.out.println ("Waypoint Identifier:         "+identifier);
//		System.out.println ("Other options will be implemented soon.");
//		System.out.println ("");
	}

	public String getCSVRepresentation ()
	{
		String csv = new String ();

		csv = csv + identifier + "," + position.getFloatDegreeLatitude () + "," + position.getFloatDegreeLongitude ();
		return csv;
	}

	public String getIdentifier ()
	{
		return identifier;
	}

	public MapSymbol getSymbol ()
	{
		return symbol;
	}

	public String getComment ()
	{
		return comment;
	}

	public Position getPosition ()
	{
		return position;
	}

	private long toLong (byte[] bytes)
	{
		long l = (long) ((((long) bytes[7]) * Math.pow (2,56)) + (((long) bytes[6]) * Math.pow (2,48)) + (((long) bytes[5]) * Math.pow(2, 40)) + (((long) bytes[4]) * Math.pow (2,32)) + (((long) bytes[3]) * Math.pow (2,24)) + (((long) bytes[2]) * Math.pow(2,16)) + (((long) bytes[1]) * Math.pow(2,8))) + (long) bytes[0];
		return l;
	}

	private double toDouble (byte[] bytes)
	{
		return Double.longBitsToDouble (toLong (bytes));
	}

	private long toLongInt (byte[] bytes)
	{
		long[] ints = new long[4];

		for (int i = 0; i < ints.length; i++)
		{
			if (bytes[i] < 0)
				ints[i] = (long) (256 + (int) bytes[i]);
			else
				ints[i] = (long) bytes[i];
		}

		for (int i = 0; i < ints.length; i++)
		{
			ints[i] = (ints[i]) * (long) Math.pow (2, (8 * i));
		}

		return ints[3] + ints[2] + ints[1] + ints[0];
	}

	private float toFloat (byte[] bytes)
	{
		int i = (int) toLongInt (bytes);
		float f = Float.intBitsToFloat (i);

		if (f > Math.pow (10, 20))
			return 0;
		else
			return f;
	}
}