edu.d.umn.geometry
Class GroundCoordinates

java.lang.Object
  edu.d.umn.geometry.GroundCoordinates

public class GroundCoordinates
extends java.lang.Object

This class is used to store the ground coordinates of a terrain data segment the latitude and longitude of each corner of the terrain area are stored in arc-second units

Field Summary

static int	LATITUDE index of latitude part of coordinate.
static int	LONGITUDE index of longitude part of coordinate.
static double	METERS_PER_NAUTICAL_MILE Number of meters in a nautical mile.
static double	METERS_PER_NAUTICAL_SECOND Number of meters in a nautical second.
static double	NAUTICAL_SECONDS_PER_METER Number of nautical seconds in a meter.
double[]	ne latitude and longitude of north east coordinate.
double[]	nw latitude and longitude of north west coordinate.
double[]	se latitude and longitude of south east coordinate.
static double	SECONDS_PER_NAUTICAL_MILE Number of seconds in a nautical mile.
double[]	sw latitude and longitude of south west coordinate.

Constructor Summary

GroundCoordinates()
create ground coordinate object with all values set to null

Method Summary

float	lengthMeters() calculate the length (east to west) of the segment
float	lengthSeconds() calculate the length (east to west) of the segment
java.lang.String	toString() convert to string for display purposes
float	widthMeters() calculate the width (south to north ) of the segment
float	widthSeconds() calculate the width (south to north ) of the segment

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

sw

public double[] sw

latitude and longitude of south west coordinate.

nw

public double[] nw

latitude and longitude of north west coordinate.

ne

public double[] ne

latitude and longitude of north east coordinate.

se

public double[] se

latitude and longitude of south east coordinate.

LONGITUDE

public static final int LONGITUDE

index of longitude part of coordinate.

See Also:

Constant Field Values

LATITUDE

public static final int LATITUDE

index of latitude part of coordinate.

See Also:

Constant Field Values

SECONDS_PER_NAUTICAL_MILE

public static final double SECONDS_PER_NAUTICAL_MILE

Number of seconds in a nautical mile.

See Also:

Constant Field Values

METERS_PER_NAUTICAL_MILE

public static final double METERS_PER_NAUTICAL_MILE

Number of meters in a nautical mile.

See Also:

Constant Field Values

METERS_PER_NAUTICAL_SECOND

public static final double METERS_PER_NAUTICAL_SECOND

Number of meters in a nautical second.

See Also:

Constant Field Values

NAUTICAL_SECONDS_PER_METER

public static final double NAUTICAL_SECONDS_PER_METER

Number of nautical seconds in a meter.

See Also:

Constant Field Values

Constructor Detail

GroundCoordinates

public GroundCoordinates()

create ground coordinate object with all values set to null

Method Detail

lengthMeters

public float lengthMeters()

calculate the length (east to west) of the segment

Returns:

the east-west distance in meters

widthMeters

public float widthMeters()

calculate the width (south to north ) of the segment

Returns:

the south to north distance in meters

lengthSeconds

public float lengthSeconds()

calculate the length (east to west) of the segment

Returns:

the east-west distance in seconds

widthSeconds

public float widthSeconds()

calculate the width (south to north ) of the segment

Returns:

the south to north distance in seconds

toString

public java.lang.String toString()

convert to string for display purposes

Overrides:

toString in class java.lang.Object

Returns:

string representation of the coordinates