Class TimeDep

java.lang.Object
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  +--java.awt.Component
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        +--java.awt.Container
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              +--java.awt.Panel
                    |
                    +--java.applet.Applet
                          |
                          +--BaseApplet
                                |
                                +--BaseApplet2
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                                      +--TimeDep

Direct Known Subclasses:

HSApplet

public class TimeDep

extends BaseApplet2

implements TimeDependent

Applet to animate the time-dependent Schrodinger equation

See Also:

Serialized Form

Inner classes inherited from class BaseApplet2

BaseApplet2.FixedButton, BaseApplet2.FixedCheckbox, BaseApplet2.GraphClickListener

Inner classes inherited from class BaseApplet

BaseApplet.MozillaWorkaround, BaseApplet.ResizeListener

Inner classes inherited from class java.awt.Component

java.awt.Component.AWTTreeLock

Field Summary

protected AnimThread	anim The thread used for animation, or null if no animation is in progress.
protected java.awt.Button	animButton
protected static java.awt.Color	AXES_COL
protected static int	DEFAULT_NWELLS
protected static int	DEFAULT_STEPS
protected java.awt.TextField	depthField
protected double	dt The step size for the time direction
protected java.awt.TextField	dtField
protected double	dx The step size for the x direction
protected java.awt.TextField	dxField
protected static java.awt.Color	ENERGY_COL
protected java.awt.TextField	energyField
protected TimeDepSchrodinger	eqn The time-dependent schrodinger equation
protected java.awt.TextField	fnStartField
protected java.awt.TextField	fnWidthField
protected MultipleWells	function The potential function to use when in "wells mode"
protected double	intWidth The size of the x axis interval to solve across
protected java.awt.TextField	intWidthField
protected java.awt.TextField	nWellsField
protected Plotter2	plotter
protected static java.awt.Color	POT_COL
protected Plotter2	potPlotter
protected java.awt.Checkbox	quadBox
protected Quadratic	quadFunction The potential function to use when in "quadratic mode"
protected java.awt.Button	resetButton
protected java.awt.Button	stepButton
protected int	steps The number of different x values to use in the model
protected static java.awt.Color	WAVE_FN_COL
protected static java.awt.Color	WELL_BOUNDS_COL
protected java.awt.TextField	widthField

Fields inherited from class BaseApplet2

boxes, buttons, enablePrompt, fields, focus, panel, statusLabel, useSwing, V_MARGIN

Fields inherited from class BaseApplet

buffer, GRAPH_MARGIN, refresh, resizeListener, safetyLimit, useBuffer

Fields inherited from class java.applet.Applet

serialVersionUID, stub

Fields inherited from class java.awt.Panel

base, nameCounter, serialVersionUID

Fields inherited from class java.awt.Container

component, containerListener, containerSerializedDataVersion, dispatcher, layoutMgr, maxSize, ncomponents, serialVersionUID

Fields inherited from class java.awt.Component

actionListenerK, adjustmentListenerK, appContext, assert, background, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, changeSupport, componentListener, componentListenerK, componentOrientation, componentSerializedDataVersion, 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, name, nameExplicitlySet, newEventsOnly, ownedWindowK, parent, peer, peerFont, popups, prefSize, RIGHT_ALIGNMENT, serialVersionUID, textListenerK, TOP_ALIGNMENT, valid, visible, width, windowListenerK, x, y

Constructor Summary

TimeDep()

Method Summary

void	_init() Performs initialisation specific to this applet
void	_paint(java.awt.Graphics g, int w, int h) Marks the potential function on the graph.
void	actionPerformed(java.awt.event.ActionEvent ae) Subclasses should at least provide an empty implementation of this method.
protected void	addControls() Adds the GUI controls to this applet
void	advanceOnce() Executes one time step of the model
protected void	animate() Reqests that the animation be started if it is stopped or paused, and paused if it has already started.
protected TimeDepSchrodinger	createEqn() Creates the model to be used to obtain solution data.
void	doPaint(java.awt.Graphics g) Called by forcePaint() to actually perform the painting.
double	getT() Returns the time in the model
void	init() Performs extra initialisation, including adding a panel to the bottom of the applet.
void	killAnimation() Requests the animation stop at the next convenient opportunity.
protected boolean	reset() Resets the model, causing the function data to be reset to a gaussian.
void	start() Applets should use this method to perform any final initialisation necessary to "activate" the applet
protected void	step() Executes one time step of the model, then refreshes the display.
void	stop() When this method is called, the applet should cease any user interaction.
void	updateInput() Reads in (and validates) input from the text fields.
protected void	validateInput(double energy, double depth, double width, double intWidth, int nWells, int nSteps, double fnW, double x0) Performs the validation for updateInput().

Methods inherited from class BaseApplet2

add, add, addButton, addCheckbox, addField, addField, addField, addListeners, focusGained, focusLost, getDouble, getGraphHeight, getInt, lockControls, makeButton, makePanel, paintDashedLineH, paintDashedLineV, register, removeListeners, setComponentsEnabled, setLayout, setPromptEnabled, textValueChanged, toString, unlockControls

Methods inherited from class BaseApplet

changeFont, forcePaint, getAppletInfo, getParameterInfo, itemStateChanged, paint, refresh, update

Methods inherited from class java.applet.Applet

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

Methods inherited from class java.awt.Panel

, addNotify, constructComponentName

Methods inherited from class java.awt.Container

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, initIDs, insets, invalidate, invalidateTree, isAncestorOf, layout, lightweightPrint, list, list, locate, minimumSize, nextFocus, paintComponents, paramString, postProcessKeyEvent, postsOldMouseEvents, preferredSize, preProcessKeyEvent, print, printComponents, printOneComponent, processContainerEvent, processEvent, proxyEnableEvents, proxyRequestFocus, readObject, remove, remove, removeAll, removeContainerListener, removeNotify, setCursor, setFocusOwner, setFont, transferFocus, updateCursor, validate, validateTree, writeObject

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, getWindowForObject, 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, registerNatives, wait, wait, wait

Field Detail

steps

protected int steps

The number of different x values to use in the model

energyField

protected java.awt.TextField energyField

depthField

protected java.awt.TextField depthField

widthField

protected java.awt.TextField widthField

intWidthField

protected java.awt.TextField intWidthField

nWellsField

protected java.awt.TextField nWellsField

dxField

protected java.awt.TextField dxField

dtField

protected java.awt.TextField dtField

fnWidthField

protected java.awt.TextField fnWidthField

fnStartField

protected java.awt.TextField fnStartField

quadBox

protected java.awt.Checkbox quadBox

resetButton

protected java.awt.Button resetButton

animButton

protected java.awt.Button animButton

stepButton

protected java.awt.Button stepButton

eqn

protected TimeDepSchrodinger eqn

The time-dependent schrodinger equation

anim

protected AnimThread anim

The thread used for animation, or null if no animation is in progress.

dt

protected double dt

The step size for the time direction

dx

protected double dx

The step size for the x direction

intWidth

protected double intWidth

The size of the x axis interval to solve across

plotter

protected Plotter2 plotter

potPlotter

protected Plotter2 potPlotter

function

protected MultipleWells function

The potential function to use when in "wells mode"

quadFunction

protected Quadratic quadFunction

The potential function to use when in "quadratic mode"

POT_COL

protected static java.awt.Color POT_COL

ENERGY_COL

protected static java.awt.Color ENERGY_COL

AXES_COL

protected static java.awt.Color AXES_COL

WAVE_FN_COL

protected static java.awt.Color WAVE_FN_COL

WELL_BOUNDS_COL

protected static java.awt.Color WELL_BOUNDS_COL

DEFAULT_STEPS

protected static int DEFAULT_STEPS

DEFAULT_NWELLS

protected static int DEFAULT_NWELLS

Constructor Detail

TimeDep

public TimeDep()

Method Detail

init

public void init()

Description copied from class: BaseApplet2

Performs extra initialisation, including adding a panel to the bottom of the applet.

Overrides:

init in class BaseApplet2

_init

public void _init()

Performs initialisation specific to this applet

addControls

protected void addControls()

Adds the GUI controls to this applet

createEqn

protected TimeDepSchrodinger createEqn()

Creates the model to be used to obtain solution data.

updateInput

public void updateInput()

Reads in (and validates) input from the text fields.

Throws:

java.lang.IllegalArgumentException - if any input fields are invalid

validateInput

protected void validateInput(double energy,
                             double depth,
                             double width,
                             double intWidth,
                             int nWells,
                             int nSteps,
                             double fnW,
                             double x0)

Performs the validation for updateInput().

start

public void start()

Description copied from class: BaseApplet

Applets should use this method to perform any final initialisation necessary to "activate" the applet

Overrides:

start in class BaseApplet2

stop

public void stop()

Description copied from class: BaseApplet

When this method is called, the applet should cease any user interaction. In particular, any threads explicitly started should be stopped, any external resources should be closed. This method should negate the action of start().

Overrides:

stop in class BaseApplet2

actionPerformed

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

Description copied from class: BaseApplet

Subclasses should at least provide an empty implementation of this method.

Overrides:

actionPerformed in class BaseApplet

animate

protected void animate()

Reqests that the animation be started if it is stopped or paused, and paused if it has already started. The label of the Start button will be changed to reflect the state of the animation.

killAnimation

public void killAnimation()

Requests the animation stop at the next convenient opportunity.

step

protected void step()

Executes one time step of the model, then refreshes the display.

reset

protected boolean reset()

Resets the model, causing the function data to be reset to a gaussian.

Returns:

true if initialisation succeeded, false if there was an input validation error

advanceOnce

public void advanceOnce()

Executes one time step of the model

Specified by:

advanceOnce in interface TimeDependent

getT

public double getT()

Returns the time in the model

Specified by:

getT in interface TimeDependent

doPaint

public void doPaint(java.awt.Graphics g)

Description copied from class: BaseApplet

Called by forcePaint() to actually perform the painting. Subclasses should implement this method as if it were the standard paint() method; buffering will then take place transparently.

Overrides:

doPaint in class BaseApplet

Tags copied from class: BaseApplet

Parameters:

g - The Graphics object on which to paint

_paint

public void _paint(java.awt.Graphics g,
                   int w,
                   int h)

Marks the potential function on the graph. If the function consists of square wells, then only discontinuity markers will be drawn. Otherwise, the potential function will be plotted behind the graph.

Parameters:

g - The Graphics surface on which to paint

w - The width (in pixels) of the available display area

h - The height (in pixels) of the available display area