prajna.geo

Interface GeoDisplay

All Known Implementing Classes:

GeoCanvas, GeoImageDisplay, GoogleGeoCanvas, GraphGeoCanvas, TimerGeoCanvas

public interface GeoDisplay

This interface provides common methods for geographic displays to implement.

Author:

Edward Swing

Method Summary

Methods

Modifier and Type	Method and Description
void	addLayer(GeoLayer layer) Add a layer to the geographic display
GeoBounds	getGeoBounds() Get the geographic bounds
java.util.List<GeoLayer>	getLayers() Get the list of layers.
Projection	getProjection() Get the current projection
void	setGeoBounds(GeoBounds geoBounds) Set the geographic bounds
void	setLayers(java.util.Collection<GeoLayer> layers) Set the geographic layers.
void	setProjection(Projection proj) Set the current projection

Method Detail

addLayer

void addLayer(GeoLayer layer)

Add a layer to the geographic display

Parameters:

layer - a new geographic layer

getGeoBounds

GeoBounds getGeoBounds()

Get the geographic bounds

Returns:

the geographic bounds

getLayers

java.util.List<GeoLayer> getLayers()

Get the list of layers. The list is returned in the order that the layers are drawn, so the first layers in the list will be below later ones. This method should return a defensive copy of the layers.

Returns:

the list of layers.

getProjection

Projection getProjection()

Get the current projection

Returns:

the current projection

setGeoBounds

void setGeoBounds(GeoBounds geoBounds)

Set the geographic bounds

Parameters:

geoBounds - the geographic bounds

setLayers

void setLayers(java.util.Collection<GeoLayer> layers)

Set the geographic layers. The layers will be added to the internal list in iteration order.

Parameters:

layers - the collection of geographic layers

setProjection

void setProjection(Projection proj)

Set the current projection

Parameters:

proj - the new projection