org.geotools.map

Class RasterLayer

Object

Layer

StyleLayer

RasterLayer

Direct Known Subclasses:

GridCoverageLayer, GridReaderLayer

public abstract class RasterLayer
extends StyleLayer

Layer responsible for raster content.

Since:

8.0

Author:

Jody Garnett

Field Summary

Fields

Modifier and Type	Field and Description
protected SimpleFeatureSource	source SimpleFeatureSource used to provide the outline of the raster content.

Fields inherited from class StyleLayer

style

Fields inherited from class Layer

listenerList, LOGGER, selected, title, userData, visible

Constructor Summary

Constructors

Constructor and Description
RasterLayer(Style style)
RasterLayer(Style style, String title)

Method Summary

Modifier and Type	Method and Description
void	dispose() Allows a Layer to clean up any listeners, or internal caches or resources it has added during use.
SimpleFeatureSource	getFeatureSource() FetureSource representation of raster contents (in case a vector based renderer wishes to draw a polygon outline).
abstract SimpleFeatureCollection	toFeatureCollection() Supply a FeatureCollection indicating where the raster is located, we ask that the features use the same coordinate reference system as your raster data and form an outline or foot print of the information you have available.

Methods inherited from class StyleLayer

getStyle, setStyle

Methods inherited from class Layer

addMapLayerListener, connectDataListener, finalize, fireMapLayerListenerLayerChanged, fireMapLayerListenerLayerDeselected, fireMapLayerListenerLayerHidden, fireMapLayerListenerLayerPreDispose, fireMapLayerListenerLayerSelected, fireMapLayerListenerLayerShown, getBounds, getQuery, getTitle, getUserData, isSelected, isVisible, preDispose, removeMapLayerListener, setSelected, setTitle, setVisible, toString

Methods inherited from class Object

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

Field Detail

source

protected SimpleFeatureSource source

SimpleFeatureSource used to provide the outline of the raster content. Created in a lazy fashion by getFeatureSource().

Constructor Detail

RasterLayer

public RasterLayer(Style style)

RasterLayer

public RasterLayer(Style style,
                   String title)

Method Detail

getFeatureSource

public SimpleFeatureSource getFeatureSource()

FetureSource representation of raster contents (in case a vector based renderer wishes to draw a polygon outline).

This method uses DataUtilities#source(org.opengis.feature.simple.SimpleFeature[]) to wrap up the result of {@link #toFeatureCollection()}

Overrides:

getFeatureSource in class Layer

Returns:

The features for this layer, or an an empty ArrayFeatureSource if not available.

dispose

public void dispose()

Description copied from class: Layer

Allows a Layer to clean up any listeners, or internal caches or resources it has added during use.

Overrides:

dispose in class StyleLayer

toFeatureCollection

public abstract SimpleFeatureCollection toFeatureCollection()

Supply a FeatureCollection indicating where the raster is located, we ask that the features use the same coordinate reference system as your raster data and form an outline or foot print of the information you have available.

This is an interesting method for a RasterLayer to have; some of the rendering systems are willing to render your raster content as an outline; for this to work they need this method to supply a feature collection indicating where the content is located. The information may also be used to determine if any of your raster content is on screen (and thus needs to be rendered).

Note this is a feature collection to allow for raster content that contains more than one image; and is not based bounding boxes (as sometimes rasters are rotated or stretched into position).

You may find the FeatureUtilities useful in wrapping up your raster content.

Returns:

SimpleFeatureCollection indicating the location of raster content