com.mousebird.maply

Class QuadSamplingLayer

java.lang.Object

com.mousebird.maply.Layer

com.mousebird.maply.QuadSamplingLayer

All Implemented Interfaces:

LayerThread.ViewWatcherInterface

public class QuadSamplingLayer
extends Layer
implements LayerThread.ViewWatcherInterface

The Quad Sampling Layer runs a quad tree which determines what tiles to load. We hook up other things to this to actually do the loading.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	QuadSamplingLayer.ClientInterface

Field Summary

Fields inherited from class com.mousebird.maply.Layer

layerThread

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	QuadSamplingLayer()

Method Summary

Modifier and Type	Method and Description
void	addClient(QuadSamplingLayer.ClientInterface user) Add a client to this sampling layer.
void	finalize()
float	getMaxLagTime() How long the layer can go without a viewUpdated() call.
float	getMinTime() This minimum time before unique viewUpdated() calls.
void	preSceneFlush(LayerThread layerThread) Called on the layer thread right before we flush changes out to the scene.
void	removeClient(QuadSamplingLayer.ClientInterface user) Client will stop getting updates from this sampling layer.
void	shutdown() This method is called when a layer is to be removed.
void	startLayer(LayerThread inLayerThread) --- Layer methods ---
void	viewUpdated(ViewState viewState) --- View Updated Methods ---

Methods inherited from class java.lang.Object

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

Constructor Detail

QuadSamplingLayer

protected QuadSamplingLayer()

Method Detail

addClient

public void addClient(QuadSamplingLayer.ClientInterface user)

Add a client to this sampling layer. It'll do its hooking up on the C++ side.

removeClient

public void removeClient(QuadSamplingLayer.ClientInterface user)

Client will stop getting updates from this sampling layer.

startLayer

public void startLayer(LayerThread inLayerThread)

--- Layer methods ---

Overrides:

startLayer in class Layer

preSceneFlush

public void preSceneFlush(LayerThread layerThread)

Description copied from class: Layer

Called on the layer thread right before we flush changes out to the scene. You can be guaranteed that no changes you make appear before this is called. So it's nice for syncing up display state with the main thread.

Overrides:

preSceneFlush in class Layer

shutdown

public void shutdown()

Description copied from class: Layer

This method is called when a layer is to be removed. The layer should clean up any objects it may have created.

If the MaplyController is shut down, you may not get this call and instead may simply be deleted.

Overrides:

shutdown in class Layer

viewUpdated

public void viewUpdated(ViewState viewState)

--- View Updated Methods ---

Specified by:

viewUpdated in interface LayerThread.ViewWatcherInterface

Parameters:

viewState - The new state for the view associated with the MaplyController.

getMinTime

public float getMinTime()

Description copied from interface: LayerThread.ViewWatcherInterface

This minimum time before unique viewUpdated() calls. Layers can't handle rapid changes of the view, typically. So we pick a period, such as 1/10s that we can handle and specify that here. The viewUpdated() calls will come no more often than this.

Specified by:

getMinTime in interface LayerThread.ViewWatcherInterface

getMaxLagTime

public float getMaxLagTime()

Description copied from interface: LayerThread.ViewWatcherInterface

How long the layer can go without a viewUpdated() call.

Specified by:

getMaxLagTime in interface LayerThread.ViewWatcherInterface

finalize

public void finalize()

Overrides:

finalize in class java.lang.Object