org.deegree.graphics.optimizers
Class AbstractOptimizer

java.lang.Object
  org.deegree.graphics.optimizers.AbstractOptimizer

All Implemented Interfaces:

Optimizer

Direct Known Subclasses:

LabelOptimizer, OptimizerChain

public abstract class AbstractOptimizer
extends Object
implements Optimizer

This is the abstract base class for Optimizers that need to alter the contents of Themes before the parent MapView object is painted. For example, the placements of LabelDisplayElements in a Theme may be optimized to minimize overlapping using the LabelOptimizer.

Version:

$Revision: 9340 $ $Date: 2007-12-27 13:32:12 +0100 (Do, 27 Dez 2007) $

Author:

Markus Schneider

Field Summary

protected MapView	mapView
protected Set<Theme>	themes

Constructor Summary

AbstractOptimizer()

Method Summary

void	addTheme(Theme theme) Adds a Theme that the Optimizer should consider.
abstract void	optimize(Graphics2D g) Invokes the optimization process.
void	setMapView(MapView mapView) Sets the associated MapView-instance.

Methods inherited from class java.lang.Object

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

Field Detail

themes

protected Set<Theme> themes

mapView

protected MapView mapView

Constructor Detail

AbstractOptimizer

public AbstractOptimizer()

Method Detail

setMapView

public void setMapView(MapView mapView)

Sets the associated MapView-instance. Is needed for the scale and projection information. Called by the MapView.

Specified by:

setMapView in interface Optimizer

Parameters:

mapView -

addTheme

public void addTheme(Theme theme)

Adds a Theme that the Optimizer should consider.

Specified by:

addTheme in interface Optimizer

Parameters:

theme -

optimize

public abstract void optimize(Graphics2D g)
                       throws Exception

Invokes the optimization process. The Optimizer will now process and modify the contents of the attached Themes.

Specified by:

optimize in interface Optimizer

Parameters:

g -

Throws:

Exception