Class DrawArea

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Canvas
              |
              +--DrawArea

All Implemented Interfaces:

javax.accessibility.Accessible, java.awt.image.ImageObserver, java.awt.MenuContainer, java.lang.Runnable, java.io.Serializable

class DrawArea

extends java.awt.Canvas

implements java.lang.Runnable

The DrawArea class the part of the Lissa application draws the Lissajous figures.

It works as an animator with double buffering.

See Also:

Serialized Form

Inner classes inherited from class java.awt.Canvas

java.awt.Canvas.AccessibleAWTCanvas

Inner classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.AWTTreeLock

Field Summary

(package private) static int	dx
(package private) static int	dy
(package private) static int	ldx
(package private) static int	ldy
(package private) static int	maxDelta

Fields inherited from class java.awt.Component

accessibleContext, actionListenerK, adjustmentListenerK, appContext, background, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, componentListener, componentListenerK, componentOrientation, containerListenerK, cursor, dropTarget, enabled, eventMask, focusListener, focusListenerK, font, foreground, graphicsConfig, hasFocus, height, hierarchyBoundsListener, hierarchyBoundsListenerK, hierarchyListener, hierarchyListenerK, incRate, inputMethodListener, inputMethodListenerK, isInc, isPacked, itemListenerK, keyListener, keyListenerK, LEFT_ALIGNMENT, locale, LOCK, metrics, minSize, mouseListener, mouseListenerK, mouseMotionListener, mouseMotionListenerK, newEventsOnly, ownedWindowK, parent, peer, peerFont, popups, prefSize, RIGHT_ALIGNMENT, textListenerK, TOP_ALIGNMENT, valid, visible, width, windowClosingException, windowListenerK, x, y

Fields inherited from interface java.awt.image.ImageObserver

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

Constructor Summary

DrawArea(java.awt.Dimension daSize, DebugArea da)
Constructs a new DrawArea and sets its initial values to their defaults.

Method Summary

Pix	getAmp() Returns amplitude values.
Pix	getFreq() Returns frequency values.
Pix	getPhase() Returns phase values.
void	paint(java.awt.Graphics g) Painting function.
void	reset() Reset the drawing with initial time constant.
void	reset(double i) Reset the drawing with given time constant.
void	run() Animator run function.
void	setAmp(double a1, double a2) Set amplitudes according to two given double values.
void	setAmp(Pix amp) Set amplitudes according to given Pix
void	setFreq(double f1, double f2) Set frequencies according to two given double values.
void	setFreq(Pix freq) Set frequencies according to given Pix
void	setINC() Set time constant to its initial value.
void	setINC(double i) Set time constant.
void	setPhase(double p1, double p2) Set phases according to two given double values.
void	setPhase(Pix phase) Set phases according to given Pix
void	setSize(java.awt.Dimension daSize) Set size of this DrawArea
void	start() Animator start function.
void	stop() Animator stop function.
java.lang.String	toString() Returns a String that represents the state of this DrawArea.
void	update(java.awt.Graphics g) Update override.

Methods inherited from class java.awt.Canvas

, addNotify, constructComponentName, getAccessibleContext, postsOldMouseEvents

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addPropertyChangeListener, addPropertyChangeListener, areInputMethodsEnabled, bounds, checkGD, checkImage, checkImage, checkWindowClosingException, coalesceEvents, contains, contains, createChildHierarchyEvents, createHierarchyEvents, createImage, createImage, deliverEvent, disable, disableEvents, dispatchEvent, dispatchEventImpl, doLayout, enable, enable, enableEvents, enableInputMethods, eventEnabled, firePropertyChange, getAccessibleIndexInParent, getAccessibleStateSet, getAlignmentX, getAlignmentY, getBackground, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentOrientation, getCursor, getDropTarget, getFont_NoClientCode, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getInputContext, getInputMethodRequests, getListeners, getLocale, getLocation, getLocation, getLocationOnScreen_NoTreeLock, getLocationOnScreen, getMaximumSize, getMinimumSize, getName, getNativeContainer, getParent_NoClientCode, getParent, getPeer, getPreferredSize, getSize, getSize, getToolkit, getToolkitImpl, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isDisplayable, isDoubleBuffered, isEnabled, isEnabledImpl, isFocusTraversable, isLightweight, isOpaque, isRecursivelyVisible, isShowing, isValid, isVisible, keyDown, keyUp, layout, lightweightPaint, lightweightPrint, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, numListening, paintAll, paintHeavyweightComponents, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, printHeavyweightComponents, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, resetGC, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFont, setForeground, setLocale, setLocation, setLocation, setName, setSize, setVisible, show, show, size, transferFocus, validate

Methods inherited from class java.lang.Object

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

Field Detail

ldx

static int ldx

ldy

static int ldy

dx

static int dx

dy

static int dy

maxDelta

static int maxDelta

Constructor Detail

DrawArea

public DrawArea(java.awt.Dimension daSize,
                DebugArea da)

Constructs a new DrawArea and sets its initial values to their defaults.

Parameters:

daSize - initial size of drawing area

da - DebugArea used to output debug information, should be set up by parent object

Method Detail

setFreq

public void setFreq(Pix freq)

Set frequencies according to given Pix

Parameters:

freq - Pix containing new frequency values

setFreq

public void setFreq(double f1,
                    double f2)

Set frequencies according to two given double values.

Parameters:

f1 - new x-axis frequency value

f2 - new y-axis frequency value

setPhase

public void setPhase(Pix phase)

Set phases according to given Pix

Parameters:

phase - Pix containing new phase values

setPhase

public void setPhase(double p1,
                     double p2)

Set phases according to two given double values.

Parameters:

p1 - new x-axis phase value

p2 - new y-axis phase value

setAmp

public void setAmp(Pix amp)

Set amplitudes according to given Pix

Parameters:

amp - Pix containing new amplitude values

setAmp

public void setAmp(double a1,
                   double a2)

Set amplitudes according to two given double values.

Parameters:

a1 - new x-axis amplitude value

a2 - new y-axis amplitude value

getFreq

public Pix getFreq()

Returns frequency values.

Returns:

current frequency values

getPhase

public Pix getPhase()

Returns phase values.

Returns:

current phase values

getAmp

public Pix getAmp()

Returns amplitude values.

Returns:

current amplitude values

setSize

public void setSize(java.awt.Dimension daSize)

Set size of this DrawArea

Overrides:

setSize in class java.awt.Component

Parameters:

daSize - new DrawArea size

reset

public void reset()

Reset the drawing with initial time constant.

reset

public void reset(double i)

Reset the drawing with given time constant. Stop applet, reset all values and start the applet again.

Parameters:

i - new time constant

setINC

public void setINC(double i)

Set time constant.

Parameters:

i - new time constant

setINC

public void setINC()

Set time constant to its initial value.

update

public void update(java.awt.Graphics g)

Update override. Its not wanted to clear the output every frame.

Overrides:

update in class java.awt.Component

paint

public void paint(java.awt.Graphics g)

Painting function.

Overrides:

paint in class java.awt.Canvas

stop

public void stop()

Animator stop function.

start

public void start()

Animator start function.

run

public void run()

Animator run function.

Specified by:

run in interface java.lang.Runnable

toString

public java.lang.String toString()

Returns a String that represents the state of this DrawArea.

Overrides:

toString in class java.awt.Component

Returns:

a string containing relevant information of the current DrawArea state