net.pacbell.jfai.toh.ui
Class DiskView

java.lang.Object
  net.pacbell.jfai.toh.ui.DiskView

All Implemented Interfaces:

Observer

public class DiskView
extends Object
implements Observer

Visualizes a disk of the Tower Of Hanoi puzzle.

Constructor Summary

DiskView(Disk aModel, Point3f position, int numberOfDisks, BaseView aBaseView)
Create a new instance given a Disk as the model, the position (relative to the path that leads to the instance), the number of disks for the puzzle, and the base view.

Method Summary

void	disappear() Removes the receiver's visual from the scene.
BaseView	getBaseView() Gets the base view.
BranchGroup	getGroup() Gets the branch group.
static float	getHeight() Gets the absolute height.
Disk	getModel() Gets the Model.
Point3f	getPosition() Answers the center point of the disk.
float	getRadius() Gets the radius.
Point3f	modelPosition() Answer the position where the receiver should be based on where its model is.
static void	setHeight(float newHeight) Sets the absolute height.
void	setPosition(Point3f newPosition) Sets the center point of the disk.
void	update(Observable o, Object arg) The model has changed and notifies the receiver.

Methods inherited from class java.lang.Object

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

Constructor Detail

DiskView

public DiskView(Disk aModel,
                Point3f position,
                int numberOfDisks,
                BaseView aBaseView)

Create a new instance given a Disk as the model, the position (relative to the path that leads to the instance), the number of disks for the puzzle, and the base view.

Parameters:

aModel - a Disk

position - relative position

numberOfDisks - number of disks of the puzzle

aBaseView - the view of the Base

Method Detail

getHeight

public static final float getHeight()

Gets the absolute height.

Returns:

the absolute height

setHeight

public static final void setHeight(float newHeight)

Sets the absolute height.

Parameters:

newHeight - the absolute height

disappear

public void disappear()

Removes the receiver's visual from the scene. Removes the receiver from the model's observer list.

getBaseView

public BaseView getBaseView()

Gets the base view.

Returns:

the view of the Base

getGroup

public BranchGroup getGroup()

Gets the branch group.

Returns:

the BranchGroup

getModel

public Disk getModel()

Gets the Model.

Returns:

a Disk

getPosition

public Point3f getPosition()

Answers the center point of the disk.

Returns:

the absolute coordinates of the disk's center

getRadius

public float getRadius()

Gets the radius.

Returns:

the absolute radius

modelPosition

public Point3f modelPosition()

Answer the position where the receiver should be based on where its model is.

Returns:

The absolute coordinates of the disk's center point corresponding to the model's position.

setPosition

public void setPosition(Point3f newPosition)

Sets the center point of the disk.

Parameters:

newPosition - the absolute coordinates of the disk's center

update

public void update(Observable o,
                   Object arg)

The model has changed and notifies the receiver. The first argument is a Disk. The change involved changing the position of the disk by moving it between pins. The second argument is ignored. The change of position is animated.

Specified by:

update in interface Observer

Parameters:

o - a Disk that changed its position

arg - ignored