org.generation5.demos
Class Wolfram1DCA

java.lang.Object
  org.generation5.bio.CellularAutomata
      org.generation5.demos.Wolfram1DCA

All Implemented Interfaces:

Steppable, Visualizable

public class Wolfram1DCA

extends CellularAutomata

Implements Wolfram's one-dimensional cellular automata. The class allows for a large neighbourhood size, and supports smooth scrolling of the rendered region.

Field Summary

protected int	initialState The initial state of the CA, either RANDOM or MIDPOINT.
static int	MIDPOINT Start the CA with one mid point
protected int	neighbourSize The neighbourhood size.
static int	RANDOM Start the CA with an random line
protected long	ruleSpecifier The rule specifier.

Fields inherited from class org.generation5.bio.CellularAutomata

bufferPosition, bufferSize, caSize, caWorld, caWorld_x, caWorld_y, clrBackground, clrGrid, clrWorld, DOUBLE_BUFFERING, doubleBuffering, drawGrid, ENCLOSED, geometryType, INFINITE, TORODIAL, X_AXIS, Y_AXIS

Constructor Summary

Wolfram1DCA()
Default constructor.

Wolfram1DCA(int size_x, int size_y)
Create an instance with world size information.

Wolfram1DCA(int size_x, int size_y, int initType)
Create an instance with world size information as well as a starting state.

Method Summary

void	doStep() Advance the world by one timestep.
int	getInitialState() Retrieves the inital state type - either random or midpoint.
long	getRules() Return the rule specifier.
void	init() Initializes the 1D CA.
static void	main(java.lang.String[] args)
void	render(java.awt.Graphics graphics, int pw, int ph) Renders the 1D cellular automata.
void	setInitialState(int initState) Set the initial world state.
void	setRules(int neighbours, long rule) Sets the neighbourhood size and the rule specifier.

Methods inherited from class org.generation5.bio.CellularAutomata

clearWorld, drawGrid, flipBuffer, getBackgroundColor, getCASize, getGeometry, getSizeX, getSizeY, getWorldAt, iterateCA, iterateCA, reset, setBackgroundColor, setCASize, setGeometry, setWorldAt, setWorldAtEx, setWorldAtRelative, setWorldColors, setWorldColour, setWorldSize, translateGeometry, writeImage

Methods inherited from class java.lang.Object

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

Field Detail

neighbourSize

protected int neighbourSize

The neighbourhood size.

ruleSpecifier

protected long ruleSpecifier

The rule specifier. This is a single digit number that encodes the rules.

initialState

protected int initialState

The initial state of the CA, either RANDOM or MIDPOINT.

RANDOM

public static int RANDOM

Start the CA with an random line

MIDPOINT

public static int MIDPOINT

Start the CA with one mid point

Constructor Detail

Wolfram1DCA

public Wolfram1DCA()

Default constructor.

Wolfram1DCA

public Wolfram1DCA(int size_x,
                   int size_y)

Create an instance with world size information.

Parameters:

size_x - the x-size of the world.

size_y - the y-size of the world.

Wolfram1DCA

public Wolfram1DCA(int size_x,
                   int size_y,
                   int initType)

Create an instance with world size information as well as a starting state.

Parameters:

size_x - the x-size of the world.

size_y - the y-size of the world.

initType - the initial state of the world, either RANDOM or MIDPOINT.

Method Detail

doStep

public void doStep()

Advance the world by one timestep. This means calculating one line of the CA.

Specified by:

doStep in interface Steppable

Specified by:

doStep in class CellularAutomata

getRules

public long getRules()

Return the rule specifier.

Returns:

the rule specifier.

setRules

public void setRules(int neighbours,
                     long rule)

Sets the neighbourhood size and the rule specifier.

Parameters:

neighbours - the neighbourhood size.

rule - the rule specifier.

getInitialState

public int getInitialState()

Retrieves the inital state type - either random or midpoint.

Returns:

returns either RANDOM or MIDPOINT.

setInitialState

public void setInitialState(int initState)

Set the initial world state.

Parameters:

initState - set to either RANDOM or MIDPOINT.

init

public void init()

Initializes the 1D CA.

Specified by:

init in interface Steppable

Specified by:

init in class CellularAutomata

render

public void render(java.awt.Graphics graphics,
                   int pw,
                   int ph)

Renders the 1D cellular automata. This overrides the usual render function to scroll the CA data once the number of timesteps is greater than the height of the rendering area.

Specified by:

render in interface Visualizable

Overrides:

render in class CellularAutomata

Parameters:

graphics - the graphics context.

pw - the width of the context.

ph - the height of the context.

See Also:

CellularAutomata.render(Graphics, int, int)

main

public static void main(java.lang.String[] args)

Parameters:

args - the command-line arguments to pass to iterateCA.