databionics.esom.renderer.background
Class BackgroundRenderer

java.lang.Object
  databionics.esom.renderer.background.BackgroundRenderer

All Implemented Interfaces:

BmChangeListener, LrnChangeListener, ParamChangeListener, WtsChangeListener

Direct Known Subclasses:

ComponentRenderer, GapRenderer, OpinionRenderer, PMatrixRenderer, RandomRenderer, SmoothedDataHistoRenderer, TwoMatchRenderer, UMatrixRenderer

public abstract class BackgroundRenderer
extends java.lang.Object
implements LrnChangeListener, WtsChangeListener, BmChangeListener, ParamChangeListener

Base class for all background renderers. A background renderer usually transforms the high dimensional ESOM grid into a matrix of height values (e.g. U-Matrix). The height values are later mapped to color values by the Renderer class using a color gradient. Some background renderer directly produce a matrix of color values (e.g. Opinion).

See Also:

Renderer

Field Summary

protected boolean	bmChanged flag wether Bestmatches changed.
protected cern.colt.matrix.DoubleMatrix2D	cacheMatrix Store the rendered Matrix to avoid rerendering
protected boolean	lrnChanged flag wether lrn-data changed.
protected boolean	paramChanged flag wether parameters changed.
protected Renderer	renderer reference to the main renderer.
protected boolean	wtsChanged flag wether Grid changed.

Constructor Summary

BackgroundRenderer()
Standard constructor.

Method Summary

void	bmChanged() Called when the bestmatches changed.
java.lang.String	getCaption(Renderer renderer) Short description of the renderer.
protected Renderer	getRenderer() Get reference to the main renderer.
void	init() Optional initialization of background renderer.
abstract boolean	isColorBackground() Whether this background renderer returns color matrix.
void	lrnChanged() Called when the data changed.
void	paramChanged() Called when the parameters changed.
abstract cern.colt.matrix.DoubleMatrix2D	render(Renderer renderer) Calculate the height above each neuron
void	resetCache() Reset the cache for the result matrix.
void	setRenderer(Renderer renderer) Set reference to the main renderer.
void	wtsChanged() Called when the ESOM Grid changed.

Methods inherited from class java.lang.Object

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

Field Detail

renderer

protected Renderer renderer

reference to the main renderer.

paramChanged

protected boolean paramChanged

flag wether parameters changed. to decide wether to rerender

bmChanged

protected boolean bmChanged

flag wether Bestmatches changed. to decide wether to rerender

wtsChanged

protected boolean wtsChanged

flag wether Grid changed. to decide wether to rerender

lrnChanged

protected boolean lrnChanged

flag wether lrn-data changed. to decide wether to rerender

cacheMatrix

protected cern.colt.matrix.DoubleMatrix2D cacheMatrix

Store the rendered Matrix to avoid rerendering

Constructor Detail

BackgroundRenderer

public BackgroundRenderer()

Standard constructor. Set change listener flags to false.

Method Detail

isColorBackground

public abstract boolean isColorBackground()

Whether this background renderer returns color matrix. If false a height matrix is returned.

Returns:

true if this BackgroundRenderer returns colors, false if heights

getCaption

public java.lang.String getCaption(Renderer renderer)

Short description of the renderer.

Returns:

short description

render

public abstract cern.colt.matrix.DoubleMatrix2D render(Renderer renderer)

Calculate the height above each neuron

Parameters:

renderer - the invoking Renderer

init

public void init()

Optional initialization of background renderer.

wtsChanged

public void wtsChanged()

Called when the ESOM Grid changed.

Specified by:

wtsChanged in interface WtsChangeListener

lrnChanged

public void lrnChanged()

Called when the data changed.

Specified by:

lrnChanged in interface LrnChangeListener

bmChanged

public void bmChanged()

Called when the bestmatches changed.

Specified by:

bmChanged in interface BmChangeListener

paramChanged

public void paramChanged()

Called when the parameters changed.

Specified by:

paramChanged in interface ParamChangeListener

resetCache

public void resetCache()

Reset the cache for the result matrix.

getRenderer

protected Renderer getRenderer()

Get reference to the main renderer.

Returns:

Returns the renderer.

setRenderer

public void setRenderer(Renderer renderer)

Set reference to the main renderer.

Parameters:

renderer - The renderer to set.