ballworld
Class BallWorld

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              ballworld.BallWorld

All Implemented Interfaces:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.lang.Runnable, java.io.Serializable, World

public class BallWorld

extends javax.swing.JComponent

implements World, java.lang.Runnable

Provide a canvas with a grassy backround to draw balls on.

Author:

Patrick G. Heck, gus.heck@olin.edu

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class javax.swing.JComponent

javax.swing.JComponent.AccessibleJComponent

Nested classes inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Nested classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

Fields inherited from class javax.swing.JComponent

accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

BallWorld()
Creates a new instance of BallWorld

Method Summary

void	addBall(Ball aNewBall) Add a ball to the world
void	addBallRenderer(BallRenderer rend) Add a ball to the canvas for rendering.
Ball	getClosestBall(Ball myBall) returns the Ball object that is closest to myBall (not including myBall).
double	getGUIMaxX() Get the maximum X coordinate in GUI numbers.
double	getGUIMaxY() Get the maximum Y coordinate in GUI numbers.
double	getMaxX() return the maximum visible X value of the world
double	getMaxY() return the maximum visible Y value of the world
double	getMinX() Get minimum visible X value of the world.
double	getMinY() return the minimum visible Y value of the world
void	paint(java.awt.Graphics g) Draws the grass and all the balls.
void	removeBall(Ball toBeRemoved) Remove a ball from the world
void	removeBallRenderer(BallRenderer rend) Remove ball from the canvas.
void	run()
void	stop() Stop automatic repainting.

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getAccessibleContext, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getUIClassID, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, paramString, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFont, setForeground, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update, updateUI

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Constructor Detail

BallWorld

public BallWorld()

Creates a new instance of BallWorld

Method Detail

paint

public void paint(java.awt.Graphics g)

Draws the grass and all the balls.

Parameters:

g - a graphics context to draw in

addBallRenderer

public void addBallRenderer(BallRenderer rend)

Add a ball to the canvas for rendering.

Parameters:

rend - A renderer that should be added.

removeBallRenderer

public void removeBallRenderer(BallRenderer rend)

Remove ball from the canvas.

Parameters:

rend - A renderer that should be added.

addBall

public void addBall(Ball aNewBall)

Description copied from interface: World

Add a ball to the world

Specified by:

addBall in interface World

Parameters:

aNewBall - The ball to add

getClosestBall

public Ball getClosestBall(Ball myBall)

Description copied from interface: World

returns the Ball object that is closest to myBall (not including myBall). Be careful! If there is only one ball on the screen, then this method will return null

Specified by:

getClosestBall in interface World

Parameters:

myBall - The ball to find neighbors for

Returns:

The nearest ball if there is one, null otherwise

getMaxX

public double getMaxX()

Description copied from interface: World

return the maximum visible X value of the world

Specified by:

getMaxX in interface World

Returns:

The maximum x coordinate

getMaxY

public double getMaxY()

Description copied from interface: World

return the maximum visible Y value of the world

Specified by:

getMaxY in interface World

Returns:

The maximum y coordinate

getGUIMaxX

public double getGUIMaxX()

Get the maximum X coordinate in GUI numbers.

Returns:

the width of the component

getGUIMaxY

public double getGUIMaxY()

Get the maximum Y coordinate in GUI numbers.

Returns:

the height of the component

getMinX

public double getMinX()

Description copied from interface: World

Get minimum visible X value of the world.

Specified by:

getMinX in interface World

Returns:

The minimum x coordinate

getMinY

public double getMinY()

Description copied from interface: World

return the minimum visible Y value of the world

Specified by:

getMinY in interface World

Returns:

The minimum y coordinate

removeBall

public void removeBall(Ball toBeRemoved)

Description copied from interface: World

Remove a ball from the world

Specified by:

removeBall in interface World

Parameters:

toBeRemoved - The ball to remove

run

public void run()

Specified by:

run in interface java.lang.Runnable

stop

public void stop()

Stop automatic repainting.