de.frame4j.demos

Class ComplDemo.ComplexWrapper

java.lang.Object

de.frame4j.demos.ComplDemo.ComplexWrapper

All Implemented Interfaces:

Comparable<ComplDemo.ComplexWrapper>

Enclosing class:

ComplDemo

public class ComplDemo.ComplexWrapper
extends Object
implements Comparable<ComplDemo.ComplexWrapper>

Wrapper for Complex with pixel coordinates and comparison.

An object of this class wraps a Complex object, adapts it to the interface Comparable and adds pixel coordinates and painting in a specified colour

Hint: A ComplDemo object makes just three such wrappers: two for operands and one for the result.

Version:

see enclosing class

Author:

Albrecht Weinert

Field Summary

Fields

Modifier and Type	Field and Description
Color	color Painting colour for the complex vector.
Complex	cp The complex number wrapped.
int	lp Pixel norm.
boolean	noShow Do not paint.
byte	stat State.
int	xp Pixel coordinates.
int	yp Pixel coordinates.

Constructor Summary

Constructors

Constructor and Description
ComplexWrapper(Color color) Make a wrapper.

Method Summary

Modifier and Type	Method and Description
int	compareTo(ComplDemo.ComplexWrapper other) Compare the absolute values.
void	consist() Make pixel and complex values consistent.
void	doThePaint(Graphics g) Paint as vector.
void	set(Complex cp) Set the Complex.
void	set(double re, double im) Set by real and imaginary part.
void	set(int xp, int yp) Set by pixel coordinates x, y.

Methods inherited from class java.lang.Object

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

Field Detail

cp

public Complex cp

The complex number wrapped.

Must never be null.

color

public Color color

Painting colour for the complex vector.

Must never be null.

xp

public int xp

Pixel coordinates.

yp

public int yp

Pixel coordinates.

lp

public int lp

Pixel norm.

I.e the square of the length.

stat

public byte stat

State.

Consistency between cp and (xp, yp}.

noShow

public boolean noShow

Do not paint.

If true, doThePaint(Graphics) does nothing.

Constructor Detail

ComplexWrapper

public ComplexWrapper(Color color)

Make a wrapper.

Parameters:

color - the colour for painting the vector (never null!).

Method Detail

set

public void set(Complex cp)

Set the Complex.

Parameters:

cp - the complex number (object) to be wrapped

set

public void set(double re,
                double im)

Set by real and imaginary part.

Parameters:

re - the real part of the complex number (object) to be wrapped

im - its imaginary part

set

public void set(int xp,
                int yp)

Set by pixel coordinates x, y.

Parameters:

xp - the x-coordinate in pixel units

yp - the y-coordinate

consist

public void consist()

Make pixel and complex values consistent.

compareTo

public int compareTo(ComplDemo.ComplexWrapper other)

Compare the absolute values.

Comparable implementation.

Specified by:

compareTo in interface Comparable<ComplDemo.ComplexWrapper>

Parameters:

other - the other wrapped number to compare with (not null!)

Returns:

0: equal; -: this (lp) smaller than other's; +: greater

doThePaint

public void doThePaint(Graphics g)

Paint as vector.

This method requires g.translate(); that means the Zero of g must be the coordinates origin in the complex plane.

If g is null or noShow is true, nothing will be done.

Parameters:

g - the graphic environment to paint on