net.sourceforge.webcompmath.draw
Class Sequence

java.lang.Object
  java.awt.Component
      net.sourceforge.webcompmath.draw.Drawable
          net.sourceforge.webcompmath.draw.Sequence

All Implemented Interfaces:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, Computable

Direct Known Subclasses:

WCMSequenceBean

public class Sequence
extends Drawable
implements Computable

A Sequence is like a Graph1D, except that only integer values of the independent variable are used, and discrete points are plotted.

See Also:

Serialized Form

Nested Class Summary

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

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

static int	CIRCLE Circle shape
protected int	lineWidth The width, in pixels, of the outlines of the symbols.
static int	SQUARE Square shape

Fields inherited from class net.sourceforge.webcompmath.draw.Drawable

canvas, coords

Fields inherited from class java.awt.Component

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

Sequence()
Construct a Sequence object that initially has nothing to draw.

Sequence(Function f, Value lower, Value upper, int shape)
Construct a new Sequence object.

Method Summary

void	compute() This is generally called by a Controller.
void	draw(java.awt.Graphics g, boolean coordsChanged) Draw the Sequence.
java.awt.Color	getFillColor() Get the fill color
Function	getFuction() Returns the function whose sequence is computed.
int	getLineWidth() Get the width, in pixels, of outlines that are drawn.
java.awt.Color	getOutlineColor() Get the (positive) color that is used to draw outlines around the symbols.
int	getShape() Get the shape for the symbols.
float	getSymbolSize() Get the size in pixels.
Value	getValueObject() Gets a Value object that gives the value of the partial sum for the sequence.
Value	getXMax() Get the max x value
Value	getXMin() Get the min x value
void	setFillColor(java.awt.Color fillColor) Set the fill color.
void	setFunction(Function func) Set the function whose sequence is to be computed.
void	setLineWidth(int width) Set the width, in pixels, of outlines.
void	setOutlineColor(java.awt.Color c) Set the color that will be used to draw outlines around the symbols.
void	setShape(int shape) Set the shape for the symbols.
void	setSymbolSize(float size) Set the size in pixels.
void	setXMax(Value max) Set the max x value.
void	setXMin(Value min) Set the min x value.

Methods inherited from class net.sourceforge.webcompmath.draw.Drawable

getVisible, needsRedraw, setOwnerData, setVisible

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAccessibleContext, getAlignmentX, getAlignmentY, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMinimumSize, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paint, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, update, validate

Methods inherited from class java.lang.Object

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

Field Detail

lineWidth

protected int lineWidth

The width, in pixels, of the outlines of the symbols. It is restricted to being an integer in the range from 0 to 10. A value of 0 means that outlines won't be drawn at all.

CIRCLE

public static final int CIRCLE

Circle shape

See Also:

Constant Field Values

SQUARE

public static final int SQUARE

Square shape

See Also:

Constant Field Values

Constructor Detail

Sequence

public Sequence()

Construct a Sequence object that initially has nothing to draw.

Sequence

public Sequence(Function f,
                Value lower,
                Value upper,
                int shape)

Construct a new Sequence object.

Parameters:

f - a Function object used to generate the sequence. If null, nothing is drawn.

lower - the lower limit

upper - the upper limit

shape - the shape to use for symbols

Method Detail

getShape

public int getShape()

Get the shape for the symbols.

Returns:

the shape

setShape

public void setShape(int shape)

Set the shape for the symbols. The default is CIRCLE.

Parameters:

shape - the shape to set

setOutlineColor

public void setOutlineColor(java.awt.Color c)

Set the color that will be used to draw outlines around the symbols. If this is null, then no outlines are drawn. The default is black.

Parameters:

c - outline color

getOutlineColor

public java.awt.Color getOutlineColor()

Get the (positive) color that is used to draw outlines around the symbols. If this is null, then no outlines are drawn.

Returns:

outline color

getFillColor

public java.awt.Color getFillColor()

Get the fill color

Returns:

the fillColor

setFillColor

public void setFillColor(java.awt.Color fillColor)

Set the fill color.

Parameters:

fillColor - the fillColor to set

setFunction

public void setFunction(Function func)

Set the function whose sequence is to be computed. If null, nothing is drawn. The function, if non-null, must have arity 1, or an IllegalArgumentException is thrown.

Parameters:

func - function

getFuction

public Function getFuction()

Returns the function whose sequence is computed. Can be null.

Returns:

function

setLineWidth

public void setLineWidth(int width)

Set the width, in pixels, of outlines. Must be between 0 and 10. If set to 0, the thinnest possible line is drawn.

Parameters:

width - line width

getLineWidth

public int getLineWidth()

Get the width, in pixels, of outlines that are drawn.

Returns:

line width

compute

public void compute()

This is generally called by a Controller. Indicates that all data should be recomputed because input values that the data depends on might have changed.

Specified by:

compute in interface Computable

getXMax

public Value getXMax()

Get the max x value

Returns:

Returns the xMax.

setXMax

public void setXMax(Value max)

Set the max x value. If null, then use the current xMax of the graph.

Parameters:

max - The xMax to set.

getXMin

public Value getXMin()

Get the min x value

Returns:

Returns the xMin.

setXMin

public void setXMin(Value min)

Set the min x value. If null, then use the current xMin of the graph.

Parameters:

min - The xMin to set.

draw

public void draw(java.awt.Graphics g,
                 boolean coordsChanged)

Draw the Sequence. This is generally called by an object of class CoordinateRect

Specified by:

draw in class Drawable

Parameters:

g - graphics context

coordsChanged - true or false

getValueObject

public Value getValueObject()

Gets a Value object that gives the value of the partial sum for the sequence.

Returns:

a Value object representing the sum for

getSymbolSize

public float getSymbolSize()

Get the size in pixels.

Returns:

the size

setSymbolSize

public void setSymbolSize(float size)

Set the size in pixels. This is the height and width of the sqaure box that just contains a symbol. For a circle it is the diameter. For a square it is the side length. The default is 5.

Parameters:

size - the size to set