org.deegree.graphics.optimizers
Class LabelOptimizer

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

All Implemented Interfaces:

Optimizer

public class LabelOptimizer
extends AbstractOptimizer

Selects optimized Labels (graphical representations generated from LabelDisplayElements) that have a minimimal amount of overlapping.

The labeling and optimization approach uses ideas from papers by Ingo Petzold on automated label placement.

TODO: The handling of rotated labels is currently broken. Don't use rotated LabelDisplayElements with this optimizer at the moment!

Version:

$Revision: 7727 $ $Date: 2007-07-04 12:56:58 +0200 (Mi, 04 Jul 2007) $

Author:

Markus Schneider

Field Summary

Fields inherited from class org.deegree.graphics.optimizers.AbstractOptimizer

mapView, themes

Constructor Summary

LabelOptimizer()
Creates a new instance of LabelOptimizer.

LabelOptimizer(Theme[] themes)
Creates a new instance of LabelOptimizer for the given Themes.

Method Summary

void	addTheme(Theme theme) Adds a Theme that the Optimizer should consider.
void	optimize(Graphics2D g) Finds optimized Label representations for the registered LabelDisplayElements.

Methods inherited from class org.deegree.graphics.optimizers.AbstractOptimizer

setMapView

Methods inherited from class java.lang.Object

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

Constructor Detail

LabelOptimizer

public LabelOptimizer()

Creates a new instance of LabelOptimizer.

LabelOptimizer

public LabelOptimizer(Theme[] themes)

Creates a new instance of LabelOptimizer for the given Themes.

Parameters:

themes -

Method Detail

addTheme

public void addTheme(Theme theme)

Adds a Theme that the Optimizer should consider.

Specified by:

addTheme in interface Optimizer

Overrides:

addTheme in class AbstractOptimizer

Parameters:

theme -

optimize

public void optimize(Graphics2D g)
              throws Exception

Finds optimized Label representations for the registered LabelDisplayElements.

Specified by:

optimize in interface Optimizer

Specified by:

optimize in class AbstractOptimizer

Parameters:

g -

Throws:

Exception