com.luciad.view.lightspeed.camera.tracking

LuciadLightspeedClass TLspModelElementTrackingPointProvider

java.lang.Object

com.luciad.view.lightspeed.camera.tracking.ALspTrackingPointProvider

com.luciad.view.lightspeed.camera.tracking.TLspModelElementTrackingPointProvider

public class TLspModelElementTrackingPointProvider
extends ALspTrackingPointProvider

This ALspTrackingPointProvider follows a given set of model elements.

The target world point is chosen at the center point of the bounds of the group of tracked objects.

The target world orientation corresponds to the orientation (in world coordinates) of the first ILcdOriented element found in the list of objects tracked by this camera.

The tracked objects can be set using setTrackedObjects. Tracking can be disabled by calling stopTracking.

Note: This tracking point provider only tracks the given model elements. It doesn't check if the used model element and respective models are actually in the view. This should be checked externally if needed.

Since:

2012.0

Constructor Summary

Constructors

Constructor and Description
TLspModelElementTrackingPointProvider()

Method Summary

Modifier and Type	Method and Description
ILcdModel[]	getModels() Returns the models containing the objects tracked by this camera.
double	getTargetPitch() Provides the pitch angle (in degrees) to be used for orienting the camera, or Double.Nan if no pitch could be calculated.
ILcdPoint	getTargetPoint() Selects a target point that is to be followed by the camera, in world coordinates.
double	getTargetRoll() Provides the roll angle (in degrees) to be used for orienting the camera, or Double.NaN if no roll could be calculated.
double	getTargetYaw() Provides the world rotation (yaw) angle (in degrees) to be used for orienting the camera.
Object[]	getTrackedObjects() Returns the array of objects tracked by this camera.
ILspView	getView() Returns the view in which tracking is done.
void	setTrackedObjects(ILspView aView, Object[] aTrackedObjects, ILcdModel[] aModels) Sets the target objects that the camera must track.
void	stopTracking() Stops tracking the objects and models set in setTrackedObjects.

Methods inherited from class com.luciad.view.lightspeed.camera.tracking.ALspTrackingPointProvider

addTrackingPointChangeListener, fireTrackingPointChange, removeTrackingPointChangeListener

Methods inherited from class java.lang.Object

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

Constructor Detail

TLspModelElementTrackingPointProvider

public TLspModelElementTrackingPointProvider()

Method Detail

getTrackedObjects

public Object[] getTrackedObjects()

Returns the array of objects tracked by this camera.

Returns:

the array of objects tracked by this camera.

getModels

public ILcdModel[] getModels()

Returns the models containing the objects tracked by this camera.

Returns:

the models containing the objects tracked by this camera.

getView

public ILspView getView()

Description copied from class: ALspTrackingPointProvider

Returns the view in which tracking is done.

Specified by:

getView in class ALspTrackingPointProvider

Returns:

the view in which tracking is done.

setTrackedObjects

public void setTrackedObjects(ILspView aView,
                              Object[] aTrackedObjects,
                              ILcdModel[] aModels)

Sets the target objects that the camera must track.

In order to stop tracking the objects and models passed in this method, stopTracking() should be called.

Parameters:

aView - the view for which this camera is used.

aTrackedObjects - the tracked objects that the camera has to follow.

aModels - the models the tracked objects belong to. This array must have the same size as aTrackedObjects.

Throws:

IllegalArgumentException - when one of the arguments is null or when the arrays have different sizes.

stopTracking

public void stopTracking()

Stops tracking the objects and models set in setTrackedObjects.

getTargetPoint

public ILcdPoint getTargetPoint()

Description copied from class: ALspTrackingPointProvider

Selects a target point that is to be followed by the camera, in world coordinates. By implementing this method, users of this class can easily customize the selected target point.

Specified by:

getTargetPoint in class ALspTrackingPointProvider

Returns:

the selected target point, in world coordinates, or null if none was found.

getTargetYaw

public double getTargetYaw()

Description copied from class: ALspTrackingPointProvider

Provides the world rotation (yaw) angle (in degrees) to be used for orienting the camera. If no orientation can be calculated, Double.NaN should be returned. This method can be used for 2D as well as 3D cameras.

Specified by:

getTargetYaw in class ALspTrackingPointProvider

Returns:

the world rotation (yaw) angle (in degrees) to be used for orienting the camera or Double.NaN if no orientation could be calculated.

getTargetPitch

public double getTargetPitch()

Description copied from class: ALspTrackingPointProvider

Provides the pitch angle (in degrees) to be used for orienting the camera, or Double.Nan if no pitch could be calculated. This method should only be used for 3D cameras.

Specified by:

getTargetPitch in class ALspTrackingPointProvider

Returns:

the pitch angle (in degrees) to be used for orienting the camera.

getTargetRoll

public double getTargetRoll()

Description copied from class: ALspTrackingPointProvider

Provides the roll angle (in degrees) to be used for orienting the camera, or Double.NaN if no roll could be calculated. This method should only be used for 3D camera.

Specified by:

getTargetRoll in class ALspTrackingPointProvider

Returns:

the roll angle (in degrees) to be used for orienting the camera.