Class DrawableNode

java.lang.Object
  DrawableNode

Direct Known Subclasses:

Branch, PictNode

public abstract class DrawableNode
extends Object

Stuff that all nodes and branches in the scene tree know.

Author:

Mark Guzdial, Barb Ericson

Constructor Summary

DrawableNode()
Constructor for DrawableNode just sets next to null

Method Summary

void	add(DrawableNode node) Add the input node after the last node in this list.
void	drawOn(Picture bg) Draw on the given picture
abstract void	drawWith(Turtle t) Use the given turtle to draw oneself
DrawableNode	getNext() Method to get the next node
void	insertAfter(DrawableNode node) Insert the input node after this node.
DrawableNode	last() Return the last element in the list
void	remove(DrawableNode node) Method to remove a node from the list, fixing links appropriately.
void	setNext(DrawableNode nextOne) Method to set the next node

Methods inherited from class java.lang.Object

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

Constructor Detail

DrawableNode

public DrawableNode()

Constructor for DrawableNode just sets next to null

Method Detail

setNext

public void setNext(DrawableNode nextOne)

Method to set the next node

Parameters:

nextOne - next node in list

getNext

public DrawableNode getNext()

Method to get the next node

Returns:

the next node

drawWith

public abstract void drawWith(Turtle t)

Use the given turtle to draw oneself

Parameters:

t - the Turtle to draw with

drawOn

public void drawOn(Picture bg)

Draw on the given picture

Parameters:

bg - the background picture to draw on

remove

public void remove(DrawableNode node)

Method to remove a node from the list, fixing links appropriately. You can't remove the current node from the head of the list.

Parameters:

node - the element to remove from list.

insertAfter

public void insertAfter(DrawableNode node)

Insert the input node after this node.

Parameters:

node - element to insert after this.

last

public DrawableNode last()

Return the last element in the list

Returns:

the last element in the list

add

public void add(DrawableNode node)

Add the input node after the last node in this list.

Parameters:

node - element to insert after this.