optics
Class OpticsApplet

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Panel
                    |
                    +--java.applet.Applet
                          |
                          +--edu.davidson.tools.SApplet
                                |
                                +--optics.OpticsApplet

All Implemented Interfaces:

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

public class OpticsApplet

extends SApplet

This applet simulates an optics bench containing lenses, mirrors, and sources.

See Also:

Serialized Form

Fields inherited from class edu.davidson.tools.SApplet

clock, dataConnections, dataListeners, dataSources, lock

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Constructor Summary

OpticsApplet()

Method Summary

int	addObject(java.lang.String name, java.lang.String parList) Create an object and add it to the Physlet.
void	clearAll() Clears all elements from bench and repaints
java.lang.String	getAppletInfo()
double	getFocalLength(int id) Get the element's focal length
double	getIndex(int id) Get the element's index of refraction.
java.lang.String	getParameter(java.lang.String key, java.lang.String def)
java.lang.String[][]	getParameterInfo()
double	getX(int id) Get the element's x position.
double	getY(int id) Get the element's y position.
void	init()
void	jbInit()
boolean	setAnimationSlave(int masterID, int slaveID) Force an object to follow another object on the screen.
void	setAutoRefresh(boolean ar) Repaint every time the system parameters are changed.
void	setBtnOff() Changes all the colors of the buttons to black
boolean	setConstraint(int id, int constraintID) Set a motion constraint on an object.
void	setDefault() Calls the following methods: setPixPerUnit(100), setInfo(false), setSize(.8), setDrag(false), setPropertyDrag(false), & setDirection(1)
void	setDirection(int d) Set the direction that sources added after will start in
boolean	setDisplayOffset(int id, int xOff, int yOff) Offset the object's position on the screen from its default drawing position.
void	setDrag(boolean d) Determines if elements added after value is set will be allowed to be dragged
boolean	setDragable(int id, boolean drag) Change the drag property of a wire or loop after it has been created.
void	setElementRGB(int r, int g, int b) Set the color of lenses and mirrors.
void	setInfo(boolean i) Determines if elements added after value will show information on screen including focal lengths and positions
void	setNull() Calls setBtnOff() and makes it so nothing is added when the mouse clicks the bench
void	setPixPerUnit(int ppu) Set the Pixels per Unit.
void	setPropertyDrag(boolean pd) Determines if elements added after value is set will be allowed to have their properties changed by dragging
void	setRayRGB(int r, int g, int b) Set the color of the source light rays.
boolean	setResizable(int id, boolean isResizable) Make an object resizable.
boolean	setRGB(int id, int r, int g, int b) Set the red, green, and blue color values for a wire or coil that has already been created.
boolean	setShowFocus(int id, boolean show) Change the showFocus property.
void	setSize(double s) Set the szie of the optic elements.
void	setUnDefault() Calls the following methods: setPixPerUnit(100), setInfo(true), setSize(.8), setDrag(true), setPropertyDrag(true), & setDirection(1)
void	start()

Methods inherited from class edu.davidson.tools.SApplet

addDataListener, addDataSource, cleanupDataConnections, clearAllData, clearData, deleteDataConnection, deleteDataConnections, destroy, forward, getClockID, getDataConnectionFromDL, getDataConnectionFromDS, getDataFromDS, getDataListener, getDataListener, getDataSource, getDataSource, getID, getRunningID, getSourceData, getSourceVariables, isAutoRefresh, isClockRunning, makeDataConnection, pause, removeDataListener, removeDataSource, reset, reverse, setClockContinous, setClockCycle, setClockOneShot, setClockTime, setConnectionBlock, setConnectionListener, setConnectionSmoothing, setConnectionSource, setConnectionStride, setDt, setFPS, setRunningID, setRunningID, setTimeContinuous, setTimeCycle, setTimeOneShot, startClock, stepClock, stepTime, stepTimeBack, stepTimeForward, stopClock, updateDataConnection, updateDataConnections, useMasterClock

Methods inherited from class java.applet.Applet

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

Methods inherited from class java.awt.Panel

addNotify

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getInsets, getLayout, getListeners, getMaximumSize, getMinimumSize, getPreferredSize, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paint, paintComponents, preferredSize, print, printComponents, remove, remove, removeAll, removeContainerListener, removeNotify, setCursor, setFont, setLayout, update, validate

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addPropertyChangeListener, addPropertyChangeListener, bounds, checkImage, checkImage, contains, contains, createImage, createImage, disable, dispatchEvent, enable, enable, enableInputMethods, getBackground, getBounds, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getInputContext, getInputMethodRequests, getLocation, getLocation, getLocationOnScreen, getName, getParent, getPeer, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isDisplayable, isDoubleBuffered, isEnabled, 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, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, 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

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

OpticsApplet

public OpticsApplet()

Method Detail

getParameter

public java.lang.String getParameter(java.lang.String key,
                                     java.lang.String def)

init

public void init()

Overrides:

init in class java.applet.Applet

jbInit

public void jbInit()
            throws java.lang.Exception

start

public void start()

Overrides:

start in class java.applet.Applet

getAppletInfo

public java.lang.String getAppletInfo()

Overrides:

getAppletInfo in class java.applet.Applet

getParameterInfo

public java.lang.String[][] getParameterInfo()

Overrides:

getParameterInfo in class java.applet.Applet

setDisplayOffset

public boolean setDisplayOffset(int id,
                                int xOff,
                                int yOff)

Offset the object's position on the screen from its default drawing position.

Parameters:

id - The id of the object.

xoff - The x offset.

yoff - The y offset.

Returns:

True if successful.

clearAll

public void clearAll()

Clears all elements from bench and repaints

setDragable

public boolean setDragable(int id,
                           boolean drag)

Change the drag property of a wire or loop after it has been created. Use the id returned by the add methods to identify the object you wish to change.

Parameters:

id - the object identifier

drag - true if dragable

Returns:

true if successful

setShowFocus

public boolean setShowFocus(int id,
                            boolean show)

Change the showFocus property. The focus of lenses and mirrors will be drawn as a white dot on the axis.

Parameters:

id - the object identifier

show - true to show the focus

Returns:

true if successful

setConstraint

public boolean setConstraint(int id,
                             int constraintID)

Set a motion constraint on an object.

Parameters:

id - the ID of the object.

constraintID - the ID of the constraint.

Returns:

true if successful.

setDrag

public void setDrag(boolean d)

Determines if elements added after value is set will be allowed to be dragged

Parameters:

d - True or False

setAnimationSlave

public boolean setAnimationSlave(int masterID,
                                 int slaveID)

Force an object to follow another object on the screen.

Parameters:

masterID - The id of the master object.

slaveID - The id of the slave object.

Returns:

true if successful.

setResizable

public boolean setResizable(int id,
                            boolean isResizable)

Make an object resizable. A resizable object will usually change its physical properites. For example, a resizable lens will change its focal length.

Parameters:

id - the object identifier.

resizable - property

Returns:

true if successful.

setPropertyDrag

public void setPropertyDrag(boolean pd)

Determines if elements added after value is set will be allowed to have their properties changed by dragging

Parameters:

pd - True or False

setInfo

public void setInfo(boolean i)

Determines if elements added after value will show information on screen including focal lengths and positions

Parameters:

i - True or False

setElementRGB

public void setElementRGB(int r,
                          int g,
                          int b)

Set the color of lenses and mirrors. 0,0,0 will reset default.

Parameters:

r - 0g - 0b - 0

setRayRGB

public void setRayRGB(int r,
                      int g,
                      int b)

Set the color of the source light rays.

Parameters:

r - 0g - 0b - 0

setRGB

public boolean setRGB(int id,
                      int r,
                      int g,
                      int b)

Set the red, green, and blue color values for a wire or coil that has already been created. Color values must be in the range 0..255.

Parameters:

id - The id for the wire or loop.

r - red.

g - green.

b - blue.

setSize

public void setSize(double s)

Set the szie of the optic elements. Size=1 will make the height of the elements equal to the height of the applet.

Parameters:

s - Size in the range 0 to 1.0

setDirection

public void setDirection(int d)

Set the direction that sources added after will start in

Parameters:

d - d=1 or d=-1. d=1 is to the right. d=-1 is to the left

setPixPerUnit

public void setPixPerUnit(int ppu)

Set the Pixels per Unit.

Parameters:

ppu - 100 pixels per unit is as if on the screen 100 pixels represents 1 meter

setAutoRefresh

public void setAutoRefresh(boolean ar)

Repaint every time the system parameters are changed.

Overrides:

setAutoRefresh in class SApplet

Parameters:

ar - Automatic repaint?

setDefault

public void setDefault()

Calls the following methods: setPixPerUnit(100), setInfo(false), setSize(.8), setDrag(false), setPropertyDrag(false), & setDirection(1)

Overrides:

setDefault in class SApplet

setUnDefault

public void setUnDefault()

Calls the following methods: setPixPerUnit(100), setInfo(true), setSize(.8), setDrag(true), setPropertyDrag(true), & setDirection(1)

getFocalLength

public double getFocalLength(int id)

Get the element's focal length

Parameters:

id - The id of the element.

getX

public double getX(int id)

Get the element's x position.

Parameters:

id - The id of the element.

getY

public double getY(int id)

Get the element's y position.

Parameters:

id - The id of the element.

getIndex

public double getIndex(int id)

Get the element's index of refraction.

Parameters:

id - The id of the element.

addObject

public int addObject(java.lang.String name,
                     java.lang.String parList)

Create an object and add it to the Physlet. The first argument is the name of the object to be added and the second is a comma-delimited list of parameters. For example, a circle can be added a follows:

addObject ("circle", "x = 0, y = -1.0, r = 10");

Parameters:

name - the type of object to be created.

parList - a list of parameters to be set

Returns:

id that identifies the object.

setNull

public void setNull()

Calls setBtnOff() and makes it so nothing is added when the mouse clicks the bench

setBtnOff

public void setBtnOff()

Changes all the colors of the buttons to black