ComplDemo ( Frame4J -- the Java framework de.frame4j... )

java.lang.Object
- java.awt.Component
- - java.awt.Container
  - - java.awt.Panel
    - - de.frame4j.demos.ComplDemo

All Implemented Interfaces:

ActionListener, ComponentListener, ItemListener, MouseListener, MouseMotionListener, ImageObserver, MenuContainer, Serializable, Runnable, EventListener, Accessible
```
public class ComplDemo
extends Panel
implements MouseMotionListener, MouseListener, ActionListener, ItemListener, ComponentListener, Runnable
```
Demonstration of complex arithmetics.

The operations +, -, *, /, exp(), log() on complex numbers as well as many other operations can be demonstrated graphically.

After Rev. 159 in a previous 2016 repository, ComplDemo is no longer an Applet due to Oracle's decision to kill Applets. It will still run as a stand-alone application as long as Frame4J (frame4j.jar) is installed in Java <=8. It can be made available by WebStart. Start as application:
```
                java de.frame4j.demos.ComplDemo
 or              javaw de.frame4j.demos.ComplDemo 
```
© Copyright 1999 - 2005, 2016 Albrecht Weinert
Version:

65 (3.06.2024)

Author:

Albrecht Weinert

See Also:

Complex, CFun, Beans, Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

class ComplDemo.ComplexWrapper
Wrapper for Complex with pixel coordinates and comparison.
- Nested classes/interfaces inherited from class java.awt.Panel
  Panel.AccessibleAWTPanel
- Nested classes/interfaces inherited from class java.awt.Container
  Container.AccessibleAWTContainer
- Nested classes/interfaces inherited from class java.awt.Component
  Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Nested Classes
Modifier and Type	Class and Description
`class`	`ComplDemo.ComplexWrapper` Wrapper for Complex with pixel coordinates and comparison.

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`AUTHOR` Information: author.
`static String`	`CLASS_F` Information: class file name.
`static String`	`COPYRIGHT` Information: copyright hint.
`static int`	`LAST_OP` Last operator respectively function index.
`boolean`	`showPi` A circle of radius pi will be shown.
`boolean`	`showUnit` A circle of radius 1 will be shown.
`static String`	`TITLE` Title for use as graphical application.
`static String`	`VERSION` Informations: version and date.

Fields inherited from class java.awt.Component
accessibleContext, 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

Constructors
Constructor and Description

ComplDemo(boolean showPi, boolean showUnit)
Constructor as Panel respectively Application.

Constructors
Constructor and Description
`ComplDemo(boolean showPi, boolean showUnit)` Constructor as Panel respectively Application.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`actionPerformed(ActionEvent e)`
`void`	`componentHidden(ComponentEvent e)`
`void`	`componentMoved(ComponentEvent e)`
`void`	`componentResized(ComponentEvent e)` Resize the frame if run as application.
`void`	`componentShown(ComponentEvent e)`
`Dimension`	`getMinimumSize()` Minimal size.
`Dimension`	`getPreferredSize()` Size preferred.
`void`	`imgInit()` Initialising the background picture.
`void`	`init()` One time initialisations.
`void`	`initOps()` Set the operands to visible default values.
`void`	`itemStateChanged(ItemEvent e)` Item event.
`static void`	`main(String[] args)` Start the graphical Demo as Java application.
`void`	`makeArith()` Do the arithmetic operation.
`void`	`mouseClicked(MouseEvent e)`
`void`	`mouseDragged(MouseEvent e)` Dragging the mouse.
`void`	`mouseEntered(MouseEvent e)`
`void`	`mouseExited(MouseEvent e)`
`void`	`mouseMoved(MouseEvent e)`
`void`	`mousePressed(MouseEvent e)` Pressing the mouse button.
`void`	`mouseReleased(MouseEvent e)`
`void`	`paint(Graphics g)` Pint the picture.
`void`	`run()` Working method of the background thread.
`void`	`selectOp(int ts)` Choosing another arithmetic operation.
`void`	`showArith()` Display "op1 op op2 = erg".
`void`	`update(Graphics g)` Paints itself (avoiding flicker).
`void`	`updateOps()` Make the operands and result consistent (pixel to Complex).

Methods inherited from class java.awt.Panel
addNotify, getAccessibleContext

Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getInsets, getLayout, getListeners, getMaximumSize, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, isValidateRoot, layout, list, list, locate, minimumSize, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setComponentZOrder, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, setLayout, 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, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, revalidate, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - TITLE
```
public static final String TITLE
```
    Title for use as graphical application.
    
    See Also:
    
    Constant Field Values
  - AUTHOR
```
public static final String AUTHOR
```
    Information: author.
    
    See Also:
    
    Constant Field Values
  - CLASS_F
```
public static final String CLASS_F
```
    Information: class file name.
    
    See Also:
    
    Constant Field Values
  - VERSION
```
public static final String VERSION
```
    Informations: version and date.
    
    See Also:
    
    Constant Field Values
  - COPYRIGHT
```
public static final String COPYRIGHT
```
    Information: copyright hint.
    
    See Also:
    
    Constant Field Values
  - LAST_OP
```
public static final int LAST_OP
```
    Last operator respectively function index.
    
    The operations are numbered from 1: + to 19: exp() .
    
    See Also:
    
    selectOp(int), Constant Field Values
  - showPi
```
public boolean showPi
```
    A circle of radius pi will be shown.
    
    default: true
  - showUnit
```
public boolean showUnit
```
    A circle of radius 1 will be shown.
    
    default: true
- Constructor Detail
  - ComplDemo
```
public ComplDemo(boolean showPi,
                 boolean showUnit)
```
    Constructor as Panel respectively Application.
- Method Detail
  - init
```
public void init()
```
    One time initialisations.
    
    See Also:
    
    main(String[])
  - run
```
public void run()
```
    Working method of the background thread.
    
    Specified by:
    
    run in interface Runnable
  - imgInit
```
public void imgInit()
```
    Initialising the background picture.
    
    Hint: In run as application this method must be called conditionally on several spots.
  - initOps
```
public void initOps()
```
    Set the operands to visible default values.
    
    op1 = (1, -1i)
    op2 = (-1, -1i)
  - updateOps
```
public void updateOps()
```
    Make the operands and result consistent (pixel to Complex).
    
    This method makes the operands consistent after changes of the Complex or of the pixels. If the state is undefined a change of pixels is assumed for the operands.
  - update
```
public void update(Graphics g)
```
    Paints itself (avoiding flicker).
    
    Overrides:
    
    update in class Container
    
    Parameters:
    
    g - the graphic environment to paint on
  - paint
```
public void paint(Graphics g)
```
    Pint the picture.
    
    Overrides:
    
    paint in class Container
    
    Parameters:
    
    g - the graphic environment to paint on
  - mouseDragged
```
public void mouseDragged(MouseEvent e)
```
    Dragging the mouse.
    
    By dragging the mouse with left button pressed the caught operand's vector will be dragged and the painting, calculation and text display updated.
    
    Specified by:
    
    mouseDragged in interface MouseMotionListener
    
    Parameters:
    
    e - the mouse event (ignored)
  - mousePressed
```
public void mousePressed(MouseEvent e)
```
    Pressing the mouse button.
    
    By pressing the (left) mouse button the operand nearer to the spot will be caught. (If an unary operation is selected, there is only one operand and hence no need to choose.)
    
    Specified by:
    
    mousePressed in interface MouseListener
    
    Parameters:
    
    e - the mouse event (forwarded to mouseDragged(MouseEvent))
    
    See Also:
    
    mouseDragged(java.awt.event.MouseEvent)
  - mouseMoved
```
public void mouseMoved(MouseEvent e)
```
    Specified by:
    
    mouseMoved in interface MouseMotionListener
  - mouseClicked
```
public void mouseClicked(MouseEvent e)
```
    Specified by:
    
    mouseClicked in interface MouseListener
  - mouseEntered
```
public void mouseEntered(MouseEvent e)
```
    Specified by:
    
    mouseEntered in interface MouseListener
  - mouseExited
```
public void mouseExited(MouseEvent e)
```
    Specified by:
    
    mouseExited in interface MouseListener
  - mouseReleased
```
public void mouseReleased(MouseEvent e)
```
    Specified by:
    
    mouseReleased in interface MouseListener
  - componentResized
```
public void componentResized(ComponentEvent e)
```
    Resize the frame if run as application.
    
    Specified by:
    
    componentResized in interface ComponentListener
    
    Parameters:
    
    e - the component event (ignored)
  - componentHidden
```
public void componentHidden(ComponentEvent e)
```
    Specified by:
    
    componentHidden in interface ComponentListener
  - componentMoved
```
public void componentMoved(ComponentEvent e)
```
    Specified by:
    
    componentMoved in interface ComponentListener
  - componentShown
```
public void componentShown(ComponentEvent e)
```
    Specified by:
    
    componentShown in interface ComponentListener
  - itemStateChanged
```
public void itemStateChanged(ItemEvent e)
```
    Item event.
    
    This leads to the choice of an (other) arithmetic operation by using selectOp(int).
    
    Specified by:
    
    itemStateChanged in interface ItemListener
  - selectOp
```
public void selectOp(int ts)
```
    Choosing another arithmetic operation.
    
    This method changes the arithmetic operation to be demonstrated.
    
    For parameter values <= 0 nothing happens.
    
    For parameter values > LAST_OP the operands will be initialised to default values by initOps().
    
    For other values this applies:
    1: +; 2: -; 3: *; 4: /; 5: exp; 6: re; 7: im 8: conj; 9: neg; 10: abs; 11: arg; 12: norm (abs*abs); 13: sin; 14: cos; 15: sinh; 16: cosh; 17: tan; 18: tanh; 19: log.
    
    Parameters:
    
    ts - the complex operator to be demonstrated next (see list above)
  - makeArith
```
public void makeArith()
```
    Do the arithmetic operation.
  - showArith
```
public void showArith()
```
    Display "op1 op op2 = erg".
  - actionPerformed
```
public void actionPerformed(ActionEvent e)
```
    Specified by:
    
    actionPerformed in interface ActionListener
  - getPreferredSize
```
public Dimension getPreferredSize()
```
    Size preferred.
    
    Returns (500, 328).
    
    Overrides:
    
    getPreferredSize in class Container
  - getMinimumSize
```
public Dimension getMinimumSize()
```
    Minimal size.
    
    Returns (480, 228).
    
    Overrides:
    
    getMinimumSize in class Container
  - main
```
public static void main(String[] args)
```
    Start the graphical Demo as Java application.
    
    The demo panel ComplDemo will be embedded into a window of initial size 520 * 338.
    
    Parameters:
    
    args - not relevant

Class ComplDemo

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.Panel

Nested classes/interfaces inherited from class java.awt.Container

Nested classes/interfaces inherited from class java.awt.Component

Field Summary

Fields inherited from class java.awt.Component

Fields inherited from interface java.awt.image.ImageObserver

Constructor Summary

Method Summary

Methods inherited from class java.awt.Panel

Methods inherited from class java.awt.Container

Methods inherited from class java.awt.Component

Methods inherited from class java.lang.Object

Field Detail

TITLE

AUTHOR

CLASS_F

VERSION

COPYRIGHT

LAST_OP

showPi

showUnit

Constructor Detail

ComplDemo

Method Detail

init

run

imgInit

initOps

updateOps

update

paint

mouseDragged

mousePressed

mouseMoved

mouseClicked

mouseEntered

mouseExited

mouseReleased

componentResized

componentHidden

componentMoved

componentShown

itemStateChanged

selectOp

makeArith

showArith

actionPerformed

getPreferredSize

getMinimumSize

main