fr.inria.zuist.engine

Class TaggedViewSceneObserver

java.lang.Object

fr.inria.zuist.engine.SceneObserver

fr.inria.zuist.engine.ViewSceneObserver

fr.inria.zuist.engine.TaggedViewSceneObserver

All Implemented Interfaces:

CameraListener

public class TaggedViewSceneObserver
extends ViewSceneObserver

Same as ViewSceneObserver, but ignores Regions that are not tagged with one of the tags declared in a mapping from tags to target VirtualSpaces. ObjectDescriptions in Regions tagged with one of the tags declared in this SceneObserver get instantiated in the VirtualSpace mapped to the tag, as declared in the SceneObserver's constructor.

Constructor Summary

Constructors

Constructor and Description
TaggedViewSceneObserver(View observingView, Camera observingCamera, HashMap<String,VirtualSpace> t2s)

Method Summary

Modifier and Type	Method and Description
HashMap<String,VirtualSpace>	getTagVirtualSpaceMapping()
VirtualSpace	getTargetVirtualSpace(Region r) Returns the VirtualSpace corresponding to the first tag that matches.
VirtualSpace[]	getTargetVirtualSpaces() This is overridden by more elaborate SceneObservers such as TagggedViewSceneObserver.
boolean	isOfInterest(Region r) Tells the SceneManager whether a given region is of interest to this particular SceneObserver.

Methods inherited from class fr.inria.zuist.engine.ViewSceneObserver

cameraMoved, getAltitude, getGlobalView, getVisibleRegion, getX, getY

Methods inherited from class fr.inria.zuist.engine.SceneObserver

getCamera, getCurrentLevel, getLevelListener, getPreviousAltitude, getRegionListener, setLevelListener, setPreviousAltitude, setRegionListener

Methods inherited from class java.lang.Object

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

Constructor Detail

TaggedViewSceneObserver

public TaggedViewSceneObserver(View observingView,
                               Camera observingCamera,
                               HashMap<String,VirtualSpace> t2s)

Parameters:

observingView - view that observes the scene

observingCamera - camera in view that observes the scene

t2s - tag -> corresponding VirtualSpace mapping.

Method Detail

getTargetVirtualSpaces

public VirtualSpace[] getTargetVirtualSpaces()

Description copied from class: SceneObserver

This is overridden by more elaborate SceneObservers such as TagggedViewSceneObserver.

Overrides:

getTargetVirtualSpaces in class SceneObserver

getTargetVirtualSpace

public VirtualSpace getTargetVirtualSpace(Region r)

Returns the VirtualSpace corresponding to the first tag that matches. If multiple tags in the Region match those declared in this SceneObserver, there is no guarantee as to which one will be returned.

Overrides:

getTargetVirtualSpace in class SceneObserver

isOfInterest

public boolean isOfInterest(Region r)

Tells the SceneManager whether a given region is of interest to this particular SceneObserver. If it is, the SceneObserver crossing this region will trigger the loading of the ObjectDescriptions it contains. If it is not, the Region will be ignored. The default behaviour is to return true. Application-specific subclasses of SceneObserver can override this method to return true/false based, e.g., on the tags declared for the region.

Overrides:

isOfInterest in class SceneObserver

getTagVirtualSpaceMapping

public HashMap<String,VirtualSpace> getTagVirtualSpaceMapping()