fr.inria.zuist.engine

Class ViewSceneObserver

java.lang.Object

fr.inria.zuist.engine.SceneObserver

fr.inria.zuist.engine.ViewSceneObserver

All Implemented Interfaces:

CameraListener

Direct Known Subclasses:

TaggedViewSceneObserver

public class ViewSceneObserver
extends SceneObserver
implements CameraListener

Constructor Summary

Constructors

Constructor and Description
ViewSceneObserver(View observingView, Camera observingCamera, VirtualSpace targetVirtualSpace)

Method Summary

Modifier and Type	Method and Description
void	cameraMoved(Camera cam, Point2D.Double loc, double alt) Called back when a Camera is moved.
double	getAltitude()
double[]	getGlobalView(int d, EndAction ea) Get a global view of the scene from this SceneObserver.
double[]	getVisibleRegion()
double	getX()
double	getY()

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

getCamera, getCurrentLevel, getLevelListener, getPreviousAltitude, getRegionListener, getTargetVirtualSpace, getTargetVirtualSpaces, isOfInterest, setLevelListener, setPreviousAltitude, setRegionListener

Methods inherited from class java.lang.Object

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

Constructor Detail

ViewSceneObserver

public ViewSceneObserver(View observingView,
                         Camera observingCamera,
                         VirtualSpace targetVirtualSpace)

Parameters:

observingView - view that observes the scene

observingCamera - camera in view that observes the scene

targetVirtualSpace - virtual space in which the scene objects should be put

Method Detail

getVisibleRegion

public double[] getVisibleRegion()

Specified by:

getVisibleRegion in class SceneObserver

getX

public double getX()

Specified by:

getX in class SceneObserver

getY

public double getY()

Specified by:

getY in class SceneObserver

getAltitude

public double getAltitude()

Specified by:

getAltitude in class SceneObserver

cameraMoved

public void cameraMoved(Camera cam,
                        Point2D.Double loc,
                        double alt)

Description copied from interface: CameraListener

Called back when a Camera is moved. Callback handlers are expected to be thread-safe. Do not perform blocking or time consuming tasks within the handler. It is a bad idea to move the target Camera in a handler (infinite loop). Moving other Cameras is also probably a bad idea. To receive notifications, clients should register themselves using Camera.addListener

Specified by:

cameraMoved in interface CameraListener

Parameters:

cam - camera which was moved

loc - camera xy coordinates after the move

alt - camera altitude after the move

See Also:

Camera.addListener(fr.inria.zvtm.event.CameraListener), Camera.removeListener(fr.inria.zvtm.event.CameraListener)

getGlobalView

public double[] getGlobalView(int d,
                              EndAction ea)

Get a global view of the scene from this SceneObserver.

Parameters:

d - duration of animation from current location to global view

ea - action to be perfomed after camera has reached its new position (can be null)

Returns:

bounds in virtual space