Class DoublePendul

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Panel
                    |
                    +--java.applet.Applet
                          |
                          +--DoublePendul

public class DoublePendul

extends java.applet.Applet

implements TimerCallback, java.awt.event.ActionListener

The main applet class. It draws and controls all buttons, panels and textfields. Besides that it communicates with the PhysCalcs class, the class that does all the physics.

See Also:

Serialized Form

Inner classes inherited from class java.awt.Component

java.awt.Component.AWTTreeLock

Fields inherited from class java.awt.Container

component, containerListener, layoutMgr, ncomponents

Fields inherited from class java.awt.Component

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

Constructor Summary

DoublePendul()

Method Summary

void	actionPerformed(java.awt.event.ActionEvent event) This subroutine is called by the JVM if a button is pressed or if a value changes in a textbox.
void	init() Routine that is called by the JVM after the construction of the Applet and before the screen is drawn.
void	readTextBoxes() Reads out all textboxes without forcing changes
void	readTextBoxes(boolean forceReset) Reads all values in the textboxes, compares them to current parameters and if something has changed it resets the simulation.
void	start() This subroutine is called by the JVM after all visual components are initialized and are placed on the screen.
void	tick() This subroutine is called by the timer object every 50 milliseconds.

Methods inherited from class java.applet.Applet

destroy, getAppletContext, getAppletInfo, getAudioClip, getAudioClip, getCodeBase, getDocumentBase, getImage, getImage, getLocale, getParameter, getParameterInfo, isActive, newAudioClip, play, play, resize, resize, setStub, showStatus, stop

Methods inherited from class java.awt.Panel

, addNotify, constructComponentName

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, applyOrientation, countComponents, deliverEvent, dispatchEventImpl, dispatchEventToSelf, doLayout, eventEnabled, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents_NoClientCode, getComponents, getCursorTarget, getInsets, getLayout, getMaximumSize, getMinimumSize, getMouseEventTarget, getPreferredSize, getWindow, insets, invalidate, invalidateTree, isAncestorOf, layout, lightweightPrint, list, list, locate, minimumSize, nextFocus, paint, paintComponents, paramString, postProcessKeyEvent, postsOldMouseEvents, preferredSize, preProcessKeyEvent, print, printComponents, processContainerEvent, processEvent, proxyEnableEvents, proxyRequestFocus, remove, remove, removeAll, removeContainerListener, removeNotify, setCursor, setFocusOwner, setFont, setLayout, transferFocus, update, updateCursor, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addPropertyChangeListener, addPropertyChangeListener, areInputMethodsEnabled, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont_NoClientCode, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getInputContext, getInputMethodRequests, getIntrinsicCursor, getLocation, getLocation, getLocationOnScreen, getName, getNativeContainer, getParent_NoClientCode, getParent, getPeer, getSize, getSize, getToolkit, getToolkitImpl, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isDisplayable, isDoubleBuffered, isEnabled, isEnabledImpl, isFocusTraversable, isLightweight, isOpaque, 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, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, setBackground, setBounds, setBounds, setComponentOrientation, setDropTarget, setEnabled, setForeground, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus

Methods inherited from class java.lang.Object

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

Constructor Detail

DoublePendul

public DoublePendul()

Method Detail

init

public void init()

Routine that is called by the JVM after the construction of the Applet and before the screen is drawn.

Overrides:

init in class java.applet.Applet

start

public void start()

This subroutine is called by the JVM after all visual components are initialized and are placed on the screen. It initializes things that cannot be initialized before they are vissible on screen. (For example when you need to know the size of a canvas for initialisation purposes.

Overrides:

start in class java.applet.Applet

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent event)

This subroutine is called by the JVM if a button is pressed or if a value changes in a textbox. It deals with the changes and resets the simulation.

Specified by:

actionPerformed in interface java.awt.event.ActionListener

Parameters:

A - mouse click event or key event.

readTextBoxes

public void readTextBoxes()

Reads out all textboxes without forcing changes

See Also:

readTextBoxes(boolean)

readTextBoxes

public void readTextBoxes(boolean forceReset)

Reads all values in the textboxes, compares them to current parameters and if something has changed it resets the simulation.

Parameters:

forceReset - if true, always force a reset.

tick

public void tick()

This subroutine is called by the timer object every 50 milliseconds. It orders a redraw of the physical simulation.

Specified by:

tick in interface TimerCallback