Package com.luciad.view.lightspeed.camera.aboveterrain

Class TLspAboveTerrainCameraConstraint3D<T extends TLspViewXYZWorldTransformation3D>

java.lang.Object

com.luciad.view.lightspeed.camera.ALspCameraConstraint<T>

com.luciad.view.lightspeed.camera.aboveterrain.TLspAboveTerrainCameraConstraint3D<T>

public class TLspAboveTerrainCameraConstraint3D<T extends TLspViewXYZWorldTransformation3D>
extends ALspCameraConstraint<T>

Camera constraint that makes sure the camera stays above the terrain. The minimum altitude above the terrain can be controlled using setMinAltitude.

Since:

2012.0

Constructor Summary

Constructors

Constructor	Description
TLspAboveTerrainCameraConstraint3D()

Method Summary

Modifier and Type	Method	Description
void	constrain(T aSource, T aTargetSFCT)	Constrains the given view world transformation.
double	getMinAltitude()	Returns the minimum altitude over the terrain the eye point should have.
void	setMinAltitude(double aMinAltitude)	Sets the minimum altitude over the terrain the eye point should have.

Methods inherited from class com.luciad.view.lightspeed.camera.ALspCameraConstraint

addConstraintChangeListener, fireConstraintChangeEvent, removeConstraintChangeListener

Methods inherited from class java.lang.Object

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

Constructor Details

TLspAboveTerrainCameraConstraint3D

public TLspAboveTerrainCameraConstraint3D()

Method Details

getMinAltitude

public double getMinAltitude()

Returns the minimum altitude over the terrain the eye point should have.

Returns:

the minimum altitude.

setMinAltitude

public void setMinAltitude(double aMinAltitude)

Sets the minimum altitude over the terrain the eye point should have. The default value is 20.

Parameters:

aMinAltitude - the minimum altitude.

constrain

public void constrain(T aSource,
 T aTargetSFCT)

Description copied from class: ALspCameraConstraint

Constrains the given view world transformation. This method can be implemented by modifying aTargetSFCT.

When the original view world transformation is modified, the changes are first applied on a copy of the transformation (aTargetSFCT). This copy is passed to the constraints, which can also modify it. After all constraints are evaluated, all changes are applied on the original transformation.

aSource is the original transformation. It is given as context information.

Specified by:

constrain in class ALspCameraConstraint<T extends TLspViewXYZWorldTransformation3D>

Parameters:

aSource - the original transformation, on which all changes will be applied after all constraints are evaluated. It is given as context information.

aTargetSFCT - the view transformation copy which contains the modifications. Constraints should be applied on this transformation.