Class Framework.LSystem

java.lang.Object
  Framework.Plane2D
      Framework.LSystem

All Implemented Interfaces:

Framework.Drawable

Enclosing class:

Framework

public class Framework.LSystem
extends Framework.Plane2D
implements Framework.Drawable

This class is a solution to the 2010-2011 Lindenmayer System assignment found here.

Author:

Chris D'Arcy

Field Summary

java.lang.String	axiom the initiator (axiom) of the fractal
java.lang.String	definition Holds the characters defining the fractals as a sequence of drawing commands for the Turtle
double	delta The angle the heading of the turtle is modified by at each turn
double	distance The distance or length of each line segment(decreases with each generation).
int	factor the factor used to decrease the distance with each generation
double	heading The initial angle of the Turtle in degrees
java.lang.String	keys holds the characters for which productions exist
int	n The number of generations to propagate.
java.lang.String	name The name of this instance of the LSystem object
java.lang.String[]	productions The array of productions (generators) that replace their respective key in each generation
double	xPos The initial x position of the turtle
double	yPos The initial y position of the turtle

Fields inherited from interface Framework.Drawable

palette, random

Constructor Summary

Framework.LSystem(java.awt.Dimension appDimen, java.lang.String name, java.lang.String axiom, java.lang.String keys, java.lang.String[] productions, double heading, double distance, double delta, int thickness, int factor, int numSides, int n, double xPos, double yPos)
Constructor for LSystem curve: one key

Method Summary

void	draw(java.awt.image.BufferedImage drawTo) Draws itself to the parameterized BufferedImage.
boolean	finished() Sets the status of the rendering to completed.
java.lang.String	generate(int n) Recursive method used to propagate the definition of the PFC
java.awt.Color	getBackgroundColor() Merely returns the background color for this Drawable.
java.lang.String	getDefinition() Accessor method to return the String definition of the fractal.
double	getDelta() Accessor method to return the angle the Turtle is to change with each turn.
double	getDistance() Accessor method to return the length of the line segment to be drawn.
java.lang.String	getName() Accessor method return the name of the Koch object.
java.lang.String	replaceEmAll(java.lang.String str) Applies multiple productions in the development of the next generation
void	setCompleted() Sets the status of the rendering to completed.
void	setMouseEvent(java.awt.event.MouseEvent e) Allows all implementers to react to mouse events passed from the content class.

Methods inherited from class Framework.Plane2D

scrX, scrY

Methods inherited from class java.lang.Object

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

Field Detail

name

public java.lang.String name

The name of this instance of the LSystem object

axiom

public java.lang.String axiom

the initiator (axiom) of the fractal

keys

public java.lang.String keys

holds the characters for which productions exist

definition

public java.lang.String definition

Holds the characters defining the fractals as a sequence of drawing commands for the Turtle

productions

public java.lang.String[] productions

The array of productions (generators) that replace their respective key in each generation

heading

public double heading

The initial angle of the Turtle in degrees

xPos

public double xPos

The initial x position of the turtle

yPos

public double yPos

The initial y position of the turtle

distance

public double distance

The distance or length of each line segment(decreases with each generation).

delta

public double delta

The angle the heading of the turtle is modified by at each turn

factor

public int factor

the factor used to decrease the distance with each generation

n

public int n

The number of generations to propagate.

Constructor Detail

Framework.LSystem

public Framework.LSystem(java.awt.Dimension appDimen,
                         java.lang.String name,
                         java.lang.String axiom,
                         java.lang.String keys,
                         java.lang.String[] productions,
                         double heading,
                         double distance,
                         double delta,
                         int thickness,
                         int factor,
                         int numSides,
                         int n,
                         double xPos,
                         double yPos)

Constructor for LSystem curve: one key

Parameters:

appDimen - the Dimension object defining the size of the applet

name - the name of the Koch curve

axiom - the initial (generation 0) curve (the initiator in Koch parlance)

keys - the String containing the keys. Koch curve only has one key but other L-Systems have multiple keys

productions - the array of productions. Koch curve only has one production but keep as an array of String for future development

heading - the initial heading of the drawing pen (turtle) in degrees. 0 degrees is east. Positive is Counterclockwise.

distance - the length of the line to draw in pixels when moving the turtle forward (the F command)

delta - the change in the turtle's heading when executing + or - command. + is counterclockwise and - is clockwise

thickness - the thickness of the line drawn by the pen

factor - the reduction ratio applied to distance after each generation

numSides - the number of sides in the production. This aids in the rendering animation.

n - the number of generations to propagate the curve

xPos - the initial x position (column) of the turtle

yPos - the initial y position (row) of the turtle

Method Detail

generate

public java.lang.String generate(int n)

Recursive method used to propagate the definition of the PFC

Parameters:

n - the generation number

Returns:

the L-System representation of the n'th generation of the PFC

replaceEmAll

public java.lang.String replaceEmAll(java.lang.String str)

Applies multiple productions in the development of the next generation

Parameters:

str - the current definition

Returns:

the subsequent generation

getBackgroundColor

public java.awt.Color getBackgroundColor()

Description copied from interface: Framework.Drawable

Merely returns the background color for this Drawable.

Specified by:

getBackgroundColor in interface Framework.Drawable

Returns:

the Color of the background for this Drawable.

draw

public void draw(java.awt.image.BufferedImage drawTo)

Description copied from interface: Framework.Drawable

Draws itself to the parameterized BufferedImage.

Specified by:

draw in interface Framework.Drawable

Parameters:

drawTo - a BufferedImage to draw to.

getName

public java.lang.String getName()

Accessor method return the name of the Koch object.

Returns:

the name of the Koch object

getDefinition

public java.lang.String getDefinition()

Accessor method to return the String definition of the fractal.

Returns:

the current String definition

getDelta

public double getDelta()

Accessor method to return the angle the Turtle is to change with each turn.

Returns:

the angle the Turtle is to change with each turn

getDistance

public double getDistance()

Accessor method to return the length of the line segment to be drawn.

Returns:

the length of the line segment to be drawn

setMouseEvent

public void setMouseEvent(java.awt.event.MouseEvent e)

Description copied from interface: Framework.Drawable

Allows all implementers to react to mouse events passed from the content class.

Specified by:

setMouseEvent in interface Framework.Drawable

Parameters:

e - The MouseEvent that the object is to respond to.

finished

public boolean finished()

Description copied from interface: Framework.Drawable

Sets the status of the rendering to completed. Called by Content's stopThread method to interrupt and terminate the rendering thread.

Specified by:

finished in interface Framework.Drawable

setCompleted

public void setCompleted()

Description copied from interface: Framework.Drawable

Sets the status of the rendering to completed. Called by Content's stopThread method to interrupt and terminate the rendering thread.

Specified by:

setCompleted in interface Framework.Drawable