show
Class Field2DDisplay

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--show.ComplexDisplay
                    |
                    +--show.Field2DDisplay

All Implemented Interfaces:

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

Direct Known Subclasses:

AltitudeDisplay, VectorFieldDisplay

public abstract class Field2DDisplay

extends ComplexDisplay

the base class for a 2-dimensional view of complex functions it implements the functionality needed for transforming the value-canvas to the chosen size. This is done by using the Java2D-API

See Also:

Serialized Form

Inner Class Summary

class

Field2DDisplay.MouseCoordinateReader an inner class, which reads the coordinates of the mouse and transforms them to complex coordinates.

Inner classes inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Inner classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent

Field Summary

protected Calculator	calculator stores the calculator frontend to compute function values independent of the value-grid
protected double	cellHeight the height of a single cell in (logical) pixels
protected double	cellWidth the width of a single cell in (logical) pixels
protected java.awt.Point	circleCenter the last chosen point (by MouseCoordinateReader)
protected java.awt.Point	circleOuter the last coordinate used in MouseCoordinateReader.mouseDragged (for reversing)
protected double	imagDif imagRange[1] - imagRange[0], needed for transformation
protected double[]	imagRange the range in imaginary direction, needs to be stored for transformation
protected Field2DDisplay.MouseCoordinateReader	mouseCoordinateReader store the mouselistener used by this class, so that the subclass can remove it by reference
protected double	realDif realRange[1] - realRange[0], needed for transformation
protected double[]	realRange the range in real direction, needs to be stored for transformation
protected java.awt.Label	showCoords a label showing the complex coordinates of the mouse
protected java.awt.geom.AffineTransform	transform the affine transformation applied to the Complex-Data for projecting it on the screen, its inverse is used by the MouseCoordinateReader to calculate the Complex coordinates from physical screen-coordinates
protected Complex[][]	values needed here for output only

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

Field2DDisplay()

Method Summary

void	determineCellSize() sets the cellwidth and -height, determined by realDif and imagDif
void	determineTransform(int width, int height) sets the affine transformation, determined by window-size and readDif, imagDif
abstract java.awt.Canvas	getCanvas()
int[]	getIndices(Complex c) return the index pair for a given complex number using the ranges and gridsize
Complex	getValue(Complex c) return the computed function value for a given complex number using the grid of values (warning: is inaccurate compared to calculator.calculateForCurrentFunction()!)
void	setCalculator(Calculator calculator) sets the calculator frontend
void	setRange(double[] realRange, double[] imagRange) sets the ranges for both real and imaginary direction
Complex	transformXY(int x, int y) returns a Complex number with points which have been transformed from integer-physical graphics coordinates to double logical space coordinates using the inverse Transformation of the one used in paint()

Methods inherited from class show.ComplexDisplay

setValues

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, addNotify, 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, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setFont, setLayout, update, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addPropertyChangeListener, addPropertyChangeListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, getAccessibleContext, getBackground, getBounds, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getInputContext, getInputMethodRequests, getLocale, 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, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, 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

Field Detail

values

protected Complex[][] values

needed here for output only

realRange

protected double[] realRange

the range in real direction, needs to be stored for transformation

imagRange

protected double[] imagRange

the range in imaginary direction, needs to be stored for transformation

showCoords

protected java.awt.Label showCoords

a label showing the complex coordinates of the mouse

realDif

protected double realDif

realRange[1] - realRange[0], needed for transformation

imagDif

protected double imagDif

imagRange[1] - imagRange[0], needed for transformation

cellWidth

protected double cellWidth

the width of a single cell in (logical) pixels

cellHeight

protected double cellHeight

the height of a single cell in (logical) pixels

circleCenter

protected java.awt.Point circleCenter

the last chosen point (by MouseCoordinateReader)

circleOuter

protected java.awt.Point circleOuter

the last coordinate used in MouseCoordinateReader.mouseDragged (for reversing)

transform

protected java.awt.geom.AffineTransform transform

the affine transformation applied to the Complex-Data for projecting it on the screen, its inverse is used by the MouseCoordinateReader to calculate the Complex coordinates from physical screen-coordinates

mouseCoordinateReader

protected Field2DDisplay.MouseCoordinateReader mouseCoordinateReader

store the mouselistener used by this class, so that the subclass can remove it by reference

calculator

protected Calculator calculator

stores the calculator frontend to compute function values independent of the value-grid

Constructor Detail

Field2DDisplay

public Field2DDisplay()

Method Detail

setCalculator

public void setCalculator(Calculator calculator)

sets the calculator frontend

Overrides:

setCalculator in class ComplexDisplay

transformXY

public Complex transformXY(int x,
                           int y)

returns a Complex number with points which have been transformed from integer-physical graphics coordinates to double logical space coordinates using the inverse Transformation of the one used in paint()

getValue

public Complex getValue(Complex c)

return the computed function value for a given complex number using the grid of values (warning: is inaccurate compared to calculator.calculateForCurrentFunction()!)

getIndices

public int[] getIndices(Complex c)

return the index pair for a given complex number using the ranges and gridsize

determineCellSize

public void determineCellSize()

sets the cellwidth and -height, determined by realDif and imagDif

determineTransform

public void determineTransform(int width,
                               int height)

sets the affine transformation, determined by window-size and readDif, imagDif

setRange

public void setRange(double[] realRange,
                     double[] imagRange)

sets the ranges for both real and imaginary direction

Overrides:

setRange in class ComplexDisplay

getCanvas

public abstract java.awt.Canvas getCanvas()