org.jmlspecs.samples.dbc
Class Polar

java.lang.Object
  org.jmlspecs.samples.dbc.ComplexOps
      org.jmlspecs.samples.dbc.Polar

All Implemented Interfaces:

Complex

public strictfp class Polar

extends ComplexOps

Complex numbers in polar coordinates.

Author:

Gary T. Leavens with help from Abelson and Sussman's Structure and Interpretation of Computer Programs

Field Summary
private  double	ang           The angle of this number.
private  double	mag           The magnitude of this number.

 

Constructor Summary

Polar(double mag, double ang)           Initialize this polar coordinate number with magnitude mag and angle ang, except that when the magnitude is negative, this is interpreted as magnitude -mag and angle ang+StrictMath.PI.

 

Method Summary
double	angle()           Return the angle of this complex number.
double	imaginaryPart()           Return the imaginary part of this complex number.
double	magnitude()           Return the magnitude of this complex number.
double	realPart()           Return the real part of this complex number.
static double	standardizeAngle(double rad)           Standardize the angle so it's between -StrictMath.PI and StrictMath.PI (radians).
String	toString()

 

Methods inherited from class org.jmlspecs.samples.dbc.ComplexOps

add, div, equals, hashCode, mul, sub

 

Methods inherited from class java.lang.Object

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

 

Field Detail

mag

private double mag

The magnitude of this number.

ang

private double ang

The angle of this number.

Polar

public Polar(double mag,
             double ang)

Initialize this polar coordinate number with magnitude mag and angle ang, except that when the magnitude is negative, this is interpreted as magnitude -mag and angle ang+StrictMath.PI.

Parameters:

mag - the magnitude desired

ang - the angle in radians, measured counterclockwise from the positive x axis

standardizeAngle

public static double standardizeAngle(double rad)
                               throws IllegalArgumentException

Standardize the angle so it's between -StrictMath.PI and StrictMath.PI (radians).

Throws:

IllegalArgumentException

realPart

public double realPart()

Description copied from interface: Complex

Return the real part of this complex number.

imaginaryPart

public double imaginaryPart()

Description copied from interface: Complex

Return the imaginary part of this complex number.

magnitude

public double magnitude()

Description copied from interface: Complex

Return the magnitude of this complex number.

angle

public double angle()

Description copied from interface: Complex

Return the angle of this complex number.

toString

public String toString()

Overrides:

toString in class Object