org.jscience.physics.quantities
Class Angle

java.lang.Object
  javolution.realtime.RealtimeObject
      org.jscience.mathematics.numbers.Number<Quantity>
          org.jscience.physics.quantities.Quantity
              org.jscience.physics.quantities.Dimensionless
                  org.jscience.physics.quantities.Angle

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Quantity>, Realtime, Operable<Quantity>, Numeric<Quantity>

public class Angle
extends Dimensionless

This class represents the figure formed by two lines diverging from a common point. The system unit for this quantity is "rad" (Système International d'Unités).

Version:

2.0, June 12, 2005

Author:

Jean-Marie Dautelle

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.jscience.physics.quantities.Quantity

Quantity.Factory<Q extends Quantity>

Nested classes/interfaces inherited from interface javolution.realtime.Realtime

Realtime.ObjectSpace

Field Summary

static Angle

ZERO Represents a Angle amounting to nothing.

Fields inherited from class org.jscience.physics.quantities.Dimensionless

e, ONE

Constructor Summary

protected

Angle() Default constructor (allows for derivation).

Method Summary

static <Q extends Quantity> Angle	atan2(Q y, Q x) Converts rectangular coordinates (x, y) to polar (ρ, θ).
Dimensionless	cos() Returns the trigonometric cosine of this Angle.
static void	showAs(Unit unit) Shows Angle instances in the specified unit.
Dimensionless	sine() Returns the trigonometric sine of this Angle.
Dimensionless	tan() Returns the trigonometric tangent of this Angle.

Methods inherited from class org.jscience.physics.quantities.Dimensionless

acos, asin, atan, exp, log, pow, valueOf

Methods inherited from class org.jscience.physics.quantities.Quantity

approxEquals, compareTo, divide, doubleValue, equals, getAbsoluteError, getAmount, getMaximum, getMinimum, getRelativeError, getUnit, hashCode, isLargerThan, longValue, minus, norm, opposite, plus, rangeOf, reciprocal, root, sqrt, times, times, to, toText, valueOf, valueOf, valueOf

Methods inherited from class org.jscience.mathematics.numbers.Number

abs, byteValue, divide, floatValue, intValue, inverse, isGreaterThan, isLessThan, pow, shortValue

Methods inherited from class javolution.realtime.RealtimeObject

export, move, moveHeap, preserve, recycle, toString, unpreserve

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface javolution.realtime.Realtime

move

Field Detail

ZERO

public static final Angle ZERO

Represents a Angle amounting to nothing.

Constructor Detail

Angle

protected Angle()

Default constructor (allows for derivation).

Method Detail

showAs

public static void showAs(Unit unit)

Shows Angle instances in the specified unit.

Parameters:

unit - the display unit for Angle instances.

atan2

public static <Q extends Quantity> Angle atan2(Q y,
                                               Q x)

Converts rectangular coordinates (x, y) to polar (ρ, θ). This method computes the phase θ by computing an arc tangent of y/x.

Parameters:

y - y coordinate

x - x coordinate

Returns:

the θ component of the point (ρ, θ) in polar coordinates that corresponds to the point(x, y) in Cartesian coordinates.

sine

public Dimensionless sine()

Returns the trigonometric sine of this Angle.

Returns:

the sine of this angle.

cos

public Dimensionless cos()

Returns the trigonometric cosine of this Angle.

Returns:

the cosine of this angle.

tan

public Dimensionless tan()

Returns the trigonometric tangent of this Angle.

Returns:

the tangent of this angle.