Package org.orekit.frames

Class CachedTransformProvider

java.lang.Object

org.orekit.frames.CachedTransformProvider

public class CachedTransformProvider
extends Object

Thread-safe cached provider for frame transforms.

This provider is based on a thread-safe Least Recently Used cache using date as it access key, hence saving computation time on transform building.

This class is thread-safe.

Since:

13.0.3

Author:

Luc Maisonobe

Constructor Summary

Constructors

Constructor	Description
CachedTransformProvider(Frame origin, Frame destination, Function<AbsoluteDate,Transform> fullGenerator, Function<AbsoluteDate,KinematicTransform> kinematicGenerator, Function<AbsoluteDate,StaticTransform> staticGenerator, int cacheSize)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
int	getCacheSize()	Get the nmber of transforms kept in the date-based cache.
Frame	getDestination()	Get destination frame.
KinematicTransform	getKinematicTransform(AbsoluteDate date)	Get the Transform corresponding to specified date.
Frame	getOrigin()	Get origin frame.
StaticTransform	getStaticTransform(AbsoluteDate date)	Get the Transform corresponding to specified date.
Transform	getTransform(AbsoluteDate date)	Get the Transform corresponding to specified date.

Methods inherited from class java.lang.Object

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

Constructor Details

CachedTransformProvider

public CachedTransformProvider(Frame origin,
 Frame destination,
 Function<AbsoluteDate,Transform> fullGenerator,
 Function<AbsoluteDate,KinematicTransform> kinematicGenerator,
 Function<AbsoluteDate,StaticTransform> staticGenerator,
 int cacheSize)

Simple constructor.

Parameters:

origin - origin frame

destination - destination frame

fullGenerator - generator for full transforms

kinematicGenerator - generator for kinematic transforms

staticGenerator - generator for static transforms

cacheSize - number of transforms kept in the date-based cache

Method Details

getOrigin

public Frame getOrigin()

Get origin frame.

Returns:

origin frame

getDestination

public Frame getDestination()

Get destination frame.

Returns:

destination frame

getCacheSize

public int getCacheSize()

Get the nmber of transforms kept in the date-based cache.

Returns:

nmber of transforms kept in the date-based cache

getTransform

public Transform getTransform(AbsoluteDate date)

Get the Transform corresponding to specified date.

Parameters:

date - current date

Returns:

transform at specified date

getKinematicTransform

public KinematicTransform getKinematicTransform(AbsoluteDate date)

Get the Transform corresponding to specified date.

Parameters:

date - current date

Returns:

transform at specified date

getStaticTransform

public StaticTransform getStaticTransform(AbsoluteDate date)

Get the Transform corresponding to specified date.

Parameters:

date - current date

Returns:

transform at specified date