vgp.tutor.fractal
Class PjFractalImage

java.lang.Object
  |
  +--jv.object.PsObject
        |
        +--jv.project.PjProject
              |
              +--vgp.tutor.fractal.PjFractalImage

All Implemented Interfaces:

java.lang.Cloneable, PsTimeListenerIf, PsUpdateIf, PvPickListenerIf, java.io.Serializable

public class PjFractalImage

extends PjProject

Demo project for working with pixel images. Project displays a Mandelbrot set. Zoom into Mandelbrot set by marking a rectangle in display using mark-mode.

Version:

26.09.99, 1.00 revised (kp)
26.09.99, 1.00 created (kp)

Author:

Konrad Polthier

See Also:

Serialized Form

Field Summary

protected PdVector	m_bounds Bounds of display in world coordinates.
protected PuInteger	m_coarseness Coarseness, i.e. size of pixel square which is colored uniformly.
protected java.awt.Image	m_image Image to be used as background in display.
protected int	m_imageHeight Height of display canvas.
protected int	m_imageWidth Width of display canvas.
protected PuInteger	m_maxNumIter Maximal number of iterations until sequence is decided to diverge.

Fields inherited from class jv.project.PjProject

m_anim, m_bAutoFit, m_display, m_displayList, m_geometry, m_parm, m_rootGeometry

Fields inherited from class jv.object.PsObject

HAS_CONFIG_PANEL, HAS_INFO_PANEL, HAS_MATERIAL_PANEL, INSPECTOR_INFO, INSPECTOR_INFO_EXT, IS_DELETED, IS_FIXED, IS_SELECTED, IS_USED, m_infoPanel, m_name, m_panelList, m_parent, m_tag, m_updateList, NUM_TAGS

Constructor Summary

PjFractalImage()

Method Summary

void	computeImage(double xMin, double yMin, double xMax, double yMax)
void	drawImage(int[] pix, int width, int height, double xMin, double yMin, double xMax, double yMax) This is Mandelbrot iteration f(z)=z*z+c.
void	init() Initialize and reset project, stops the running animation if any.
void	markVertices(PvPickEvent pickEvent) Mark a set of vertices of a geometry within a given bounding box.
void	start() Method is invoked during loading of a project in JavaView.
boolean	update(java.lang.Object event) Update the class whenever a child has changed.

Methods inherited from class jv.project.PjProject

addDisplay, addGeometry, addGeometry, dispose, dragDisplay, dragInitial, dragVertex, fitDisplays, getAnimation, getDisplay, getDisplays, getGeometry, getGeometry, getNumGeometries, getParameter, getViewer, hasAnimation, hasDisplay, isEnabledAutoFit, pickDisplay, pickInitial, pickVertex, removeDisplay, removeGeometries, removeGeometry, selectDisplay, selectGeometry, setAnimation, setDisplay, setEnabledAutoFit, setParameter, setTime, setViewer, stop, unmarkVertices

Methods inherited from class jv.object.PsObject

addInspector, addUpdateListener, clearTag, clone, clone, clone, copy, getFather, getInfoPanel, getInspector, getName, getNumObjects, hasInspector, hasTag, hasUpdateListener, instanceOf, instanceOf, removeInspector, removeUpdateListener, setName, setParent, setTag, toString, updatePanels

Methods inherited from class java.lang.Object

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

Methods inherited from interface jv.anim.PsTimeListenerIf

getName

Methods inherited from interface jv.project.PvPickListenerIf

getName

Methods inherited from interface jv.object.PsUpdateIf

getFather, getName, setParent

Field Detail

m_image

protected java.awt.Image m_image

Image to be used as background in display.

m_imageHeight

protected int m_imageHeight

Height of display canvas.

m_imageWidth

protected int m_imageWidth

Width of display canvas.

m_maxNumIter

protected PuInteger m_maxNumIter

Maximal number of iterations until sequence is decided to diverge.

m_bounds

protected PdVector m_bounds

Bounds of display in world coordinates.

m_coarseness

protected PuInteger m_coarseness

Coarseness, i.e. size of pixel square which is colored uniformly.

Constructor Detail

PjFractalImage

public PjFractalImage()

Method Detail

init

public void init()

Description copied from class: PjProject

Initialize and reset project, stops the running animation if any. Does not reset any registered display nor geometry. They must be reset individually in each subclass.

Overrides:

init in class PjProject

start

public void start()

Description copied from class: PjProject

Method is invoked during loading of a project in JavaView.

If a project has an animation object, then the animation panel is shown when the project's this start() method is invoked during loading of the project. Use setAnimation(PsAnimation) to register an animation.

If auto fit is enabled then scenery is scaled to fit in each display.

Overrides:

start in class PjProject

Following copied from class: jv.project.PjProject

See Also:

PvViewerIf.start(), #isEnabledAutoFit(boolean)

update

public boolean update(java.lang.Object event)

Update the class whenever a child has changed. Method is usually invoked from the children.

Overrides:

update in class PsObject

Following copied from interface: jv.object.PsUpdateIf

Parameters:

event - carries a lot of information

Returns:

true if event has been handled, otherwise false

See Also:

PsObject, PsUpdateIf.getFather(), PsUpdateIf.setParent(PsUpdateIf)

markVertices

public void markVertices(PvPickEvent pickEvent)

Mark a set of vertices of a geometry within a given bounding box. Method is called when user marks a rectangular array in display.

Overrides:

markVertices in class PjProject

Parameters:

markBox - contains four coplanar points on the bounding prism, and direction of prism.

computeImage

public void computeImage(double xMin,
                         double yMin,
                         double xMax,
                         double yMax)

drawImage

public void drawImage(int[] pix,
                      int width,
                      int height,
                      double xMin,
                      double yMin,
                      double xMax,
                      double yMax)

This is Mandelbrot iteration f(z)=z*z+c. For each c check whether iteration diverges to infinity.