org.deegree.graphics
Interface Layer

All Known Subinterfaces:

FeatureLayer

All Known Implementing Classes:

FeatureLayer_Impl, Layer_Impl

public interface Layer

A Layer is a collection of Features or rasters building a thematic 'unit' waterways or country borders for example. Features or raster can be added or removed from the layer. A Feature or raster can e changed by a modul of the application using the layer because only references to Features or rasters are stored within a layer.

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Version:

$Revision: 1.6 $ $Date: 2004/03/11 08:25:33 $

Author:

Andreas Poth

Method Summary

void	addEventController(LayerEventController obj) adds an eventcontroller to the MapView that's reponsible for handling events that targets the map.
GM_Envelope	getBoundingBox() returns the BoundingBox (Envelope) of Layer.
CS_CoordinateSystem	getCoordinatesSystem() returns the coordinate reference system of the MapView
java.lang.String	getName() returns the name of the layer
void	removeEventController(LayerEventController obj)
void	setCoordinatesSystem(CS_CoordinateSystem crs) sets the coordinate reference system of the MapView.

Method Detail

getName

public java.lang.String getName()

returns the name of the layer

getBoundingBox

public GM_Envelope getBoundingBox()

returns the BoundingBox (Envelope) of Layer. This is the BoundingBox of the layers data. The BoundingBox of the View maybe larger or smaler

getCoordinatesSystem

public CS_CoordinateSystem getCoordinatesSystem()

returns the coordinate reference system of the MapView

setCoordinatesSystem

public void setCoordinatesSystem(CS_CoordinateSystem crs)
                          throws java.lang.Exception

sets the coordinate reference system of the MapView. If a new crs is set all geometries of GeometryFeatures will be transformed to the new coordinate reference system.

Throws:

java.lang.Exception

addEventController

public void addEventController(LayerEventController obj)

adds an eventcontroller to the MapView that's reponsible for handling events that targets the map. E.g.: zooming, panning, selecting a feature etc.

removeEventController

public void removeEventController(LayerEventController obj)

See Also:

addEventController(LayerEventController)