com.javadocmd.simplelatlng.util

Enum LengthUnit

java.lang.Object

java.lang.Enum<LengthUnit>

com.javadocmd.simplelatlng.util.LengthUnit

All Implemented Interfaces:

Serializable, Comparable<LengthUnit>

public enum LengthUnit
extends Enum<LengthUnit>

A utility class for handling units and unit conversions within this library.

Author:

Tyler Coles

Enum Constant Summary

Enum Constants

Enum Constant and Description
KILOMETER Kilometers, the primary unit.
METER Meters, for ease of use.
MILE Miles, using the scale factor 0.6213712 miles per kilometer.
NAUTICAL_MILE Nautical miles, using the scale factor 0.5399568 nautical miles per kilometer.
ROD Rods, using the scale factor 198.8387815 rods to the kilometer.

Field Summary

Fields

Modifier and Type	Field and Description
static LengthUnit	PRIMARY The primary length unit.

Method Summary

Modifier and Type	Method and Description
double	convertTo(LengthUnit toUnit, double value) Convert a value of this unit type to the units specified in the parameters.
double	getScaleFactor() Retrieve the scale factor between this unit and the primary length unit.
static LengthUnit	valueOf(String name) Returns the enum constant of this type with the specified name.
static LengthUnit[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

MILE

public static final LengthUnit MILE

Miles, using the scale factor 0.6213712 miles per kilometer.

NAUTICAL_MILE

public static final LengthUnit NAUTICAL_MILE

Nautical miles, using the scale factor 0.5399568 nautical miles per kilometer.

ROD

public static final LengthUnit ROD

Rods, using the scale factor 198.8387815 rods to the kilometer. Because your car gets forty rods to the hogshead and that's they way you likes it.

KILOMETER

public static final LengthUnit KILOMETER

Kilometers, the primary unit.

METER

public static final LengthUnit METER

Meters, for ease of use.

Field Detail

PRIMARY

public static final LengthUnit PRIMARY

The primary length unit. All scale factors are relative to this unit. Any conversion not involving the primary unit will first be converted to this unit, then to the desired unit.

Method Detail

values

public static LengthUnit[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (LengthUnit c : LengthUnit.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static LengthUnit valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

convertTo

public double convertTo(LengthUnit toUnit,
                        double value)

Convert a value of this unit type to the units specified in the parameters.

Parameters:

toUnit - the unit to convert to.

value - the value to convert.

Returns:

the converted value.

getScaleFactor

public double getScaleFactor()

Retrieve the scale factor between this unit and the primary length unit.

Returns:

the scale factor.