TreeDraw
Class TreeDrawingInstructions

java.lang.Object
  TreeDraw.TreeDrawingInstructions

All Implemented Interfaces:

Tree

 class TreeDrawingInstructions
extends java.lang.Object
implements Tree

Instances of this class are trees which contain useful information to draw a LabelledTree. The structure of a TreeDrawingInstructions instance is the same as that of its associated Tree instance, but each TreeDrawingInstructions node contains four useful parameters to draw a tree node: center, width, offset and childOffset. Parameter semantics is as follows: center: X coord of tree's center width: rightmost X coord of tree offset: X coord of tree's root childOffset: X coord of tree's leftmost child

Field Summary

private double	center
private double	childOffset
private TreeDrawingInstructions[]	children The instructions to draw this tree's children.
private double	offset
private LabelledTree	tree The labelled tree to draw.
private double	width

Constructor Summary

TreeDrawingInstructions(LabelledTree tree, TreeDrawingInstructions[] children, double offset, double childOffset, double center, double width)
Creates a TreeDrawingInstructions instance from its attributes.

Method Summary

double	getCenter()
Tree	getChild(int i) Returns the ith child of this instructions node.
double	getChildOffset()
java.lang.String	getLabel() Returns this instructions node's tree's root node's label.
double	getOffset()
LabelledTree	getTree() Returns the labelled tree to draw.
double	getWidth()
int	numChildren() Returns the number of children of this instructions node.
java.lang.String	toString() Returns a string representation of this instruction tree.
private void	toStringAux(int nestLevel, java.lang.StringBuffer toAppendTo) Auxilliary method for toString() implementation.

Methods inherited from class java.lang.Object

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

Field Detail

tree

private LabelledTree tree

The labelled tree to draw.

center

private double center

width

private double width

offset

private double offset

childOffset

private double childOffset

children

private TreeDrawingInstructions[] children

The instructions to draw this tree's children.

Constructor Detail

TreeDrawingInstructions

public TreeDrawingInstructions(LabelledTree tree,
                               TreeDrawingInstructions[] children,
                               double offset,
                               double childOffset,
                               double center,
                               double width)

Creates a TreeDrawingInstructions instance from its attributes.

Parameters:

tree -

children -

offset -

childOffset -

center -

width -

Method Detail

getChildOffset

public double getChildOffset()

Returns:

Returns the childoffset.

getTree

public LabelledTree getTree()

Returns the labelled tree to draw.

getCenter

public double getCenter()

Returns:

Returns the center.

getOffset

public double getOffset()

Returns:

Returns the offset.

getWidth

public double getWidth()

Returns:

Returns the width.

numChildren

public int numChildren()

Returns the number of children of this instructions node.

Specified by:

numChildren in interface Tree

getChild

public Tree getChild(int i)

Returns the ith child of this instructions node.

Specified by:

getChild in interface Tree

getLabel

public java.lang.String getLabel()

Returns this instructions node's tree's root node's label.

Returns:

toStringAux

private void toStringAux(int nestLevel,
                         java.lang.StringBuffer toAppendTo)

Auxilliary method for toString() implementation.

toString

public java.lang.String toString()

Returns a string representation of this instruction tree.

Overrides:

toString in class java.lang.Object