Package org.orekit.frames

Class TransformGenerator

java.lang.Object

org.orekit.frames.TransformGenerator

All Implemented Interfaces:

TimeStampedGenerator<Transform>

public class TransformGenerator
extends Object
implements TimeStampedGenerator<Transform>

Generator to use transforms in GenericTimeStampedCache.

Since:

9.0

Author:

Luc Maisonobe

See Also:

GenericTimeStampedCache

Constructor Summary

Constructors

Constructor	Description
TransformGenerator(int neighborsSize, TransformProvider provider, double step)	simple constructor.

Method Summary

Modifier and Type	Method	Description
List<Transform>	generate(AbsoluteDate existingDate, AbsoluteDate date)	Generate a chronologically sorted list of entries to be cached.

Methods inherited from class java.lang.Object

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

Constructor Detail

TransformGenerator

public TransformGenerator(int neighborsSize,
                          TransformProvider provider,
                          double step)

simple constructor.

Parameters:

neighborsSize - number of neighbors

provider - underlying provider

step - step size

Method Detail

generate

public List<Transform> generate(AbsoluteDate existingDate,
                                AbsoluteDate date)

Generate a chronologically sorted list of entries to be cached.

If existingDate is earlier than date, the range covered by generated entries must cover at least from existingDate (excluded) to date (included). If existingDate is later than date, the range covered by generated entries must cover at least from date (included) to existingDate (excluded).

The generated entries may cover a range larger than the minimum specified above if the generator prefers to generate large chunks of data at once. It may generate again entries already generated by an earlier call (typically at existingDate), these extra entries will be silently ignored by the cache.

Non-coverage of the minimum range may lead to a loss of data, as the gap will not be filled by the GenericTimeStampedCache in subsequent calls.

The generated entries must be chronologically sorted.

Specified by:

generate in interface TimeStampedGenerator<Transform>

Parameters:

existingDate - date of the closest already existing entry (may be null)

date - date that must be covered by the range of the generated array

Returns:

chronologically sorted list of generated entries