agi.foundation.celestial

(agi.foundation.models-2025r1.jar)

Class LibrationModel

java.lang.Object

agi.foundation.infrastructure.DefinitionalObject

agi.foundation.celestial.LibrationModel

All Implemented Interfaces:

ICloneWithContext, IEnumerateDependencies, IEquatableDefinition, IFreezable

public abstract class LibrationModel
extends DefinitionalObject

A model of the libration of a central body.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LibrationModel() Initializes a new instance.
protected	LibrationModel(LibrationModel existingInstance, CopyContext context) Initializes a new instance as a copy of an existing instance.

Method Summary

Modifier and Type	Method and Description
protected boolean	checkForSameDefinition(DefinitionalObject other) Checks to determine if another instance has the same definition as this instance and returns true if it does.
protected abstract boolean	checkForSameDefinition(LibrationModel other) Checks to determine if another instance has the same definition as this instance and returns true if it does.
protected int	computeCurrentDefinitionHashCode() Computes a hash code based on the current properties of this object.
MotionEvaluator1<EulerSequence>	getEvaluator() Gets an evaluator to evaluate the libration at given dates.
abstract MotionEvaluator1<EulerSequence>	getEvaluator(EvaluatorGroup group) Gets an evaluator to evaluate the libration at given dates.

Methods inherited from class agi.foundation.infrastructure.DefinitionalObject

areSameDefinition, areSameDefinition, areSameDefinition, areSameDefinition, areSameDefinition, clone, collectionItemsAreSameDefinition, collectionItemsAreSameDefinition, collectionItemsAreSameDefinition, dictionaryItemsAreSameDefinition, enumerateDependencies, freeze, freezeAggregatedObjects, getCollectionHashCode, getCollectionHashCode, getCollectionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDictionaryHashCode, getIsFrozen, isSameDefinition, throwIfFrozen

Methods inherited from class java.lang.Object

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

Constructor Detail

LibrationModel

protected LibrationModel()

Initializes a new instance.

LibrationModel

protected LibrationModel(@Nonnull
                         LibrationModel existingInstance,
                         @Nonnull
                         CopyContext context)

Initializes a new instance as a copy of an existing instance.

See ICloneWithContext.clone(CopyContext) for more information about how to implement this constructor in a derived class.

Parameters:

existingInstance - The existing instance to copy.

context - A CopyContext that controls the depth of the copy.

Throws:

ArgumentNullException - Thrown when existingInstance or context is null.

Method Detail

checkForSameDefinition

protected final boolean checkForSameDefinition(DefinitionalObject other)

Checks to determine if another instance has the same definition as this instance and returns true if it does. Derived classes MUST override this method and check all new fields introduced by the derived class for definitional equivalence. It is NOT necessary to check base class fields because the base class will already have done that. When overriding this method, you should NOT call the base implementation because it will return false for all derived-class instances. Derived classes should check the type of other to preserve the symmetric nature of IEquatableDefinition.isSameDefinition(java.lang.Object).

Specified by:

checkForSameDefinition in class DefinitionalObject

Parameters:

other - The other instance to compare to this one.

Returns:

true if the two objects are defined equivalently; otherwise false.

checkForSameDefinition

protected abstract boolean checkForSameDefinition(LibrationModel other)

Checks to determine if another instance has the same definition as this instance and returns true if it does. Derived classes MUST override this method and check all new fields introduced by the derived class for definitional equivalence. It is NOT necessary to check base class fields because the base class will already have done that. When overriding this method, you should NOT call the base implementation because it will return false for all derived-class instances. Derived classes should check the type of other to preserve the symmetric nature of IEquatableDefinition.isSameDefinition(java.lang.Object).

Parameters:

other - The other instance to compare to this one.

Returns:

true if the two objects are defined equivalently; otherwise false.

computeCurrentDefinitionHashCode

protected int computeCurrentDefinitionHashCode()

Computes a hash code based on the current properties of this object. Derived classes MUST override this method and compute a hash code that combines: a unique hash code seed, the base implementation result, and the hash codes of all new fields introduced by the derived class which are used in the LibrationModel.checkForSameDefinition(agi.foundation.infrastructure.DefinitionalObject) method.

Overrides:

computeCurrentDefinitionHashCode in class DefinitionalObject

Returns:

The computed hash code.

getEvaluator

public final MotionEvaluator1<EulerSequence> getEvaluator()

Gets an evaluator to evaluate the libration at given dates.

The result of evaluating will be a Motion<EulerSequence> which represents the libration angles and may also provide their derivatives. To check whether a particular LibrationModel provides libration rates, see the Order (get) property on the result returned from the evaluator.

Returns:

The evaluator.

getEvaluator

public abstract MotionEvaluator1<EulerSequence> getEvaluator(EvaluatorGroup group)

Gets an evaluator to evaluate the libration at given dates.

The result of evaluating will be a Motion<EulerSequence> which represents the libration angles and may also provide their derivatives. To check whether a particular LibrationModel provides libration rates, see the Order (get) property on the result returned from the evaluator.

Parameters:

group - The group with which to associate the new evaluator. By grouping evaluators that are often evaluated at the same Julian dates, common computations can be performed only once for the entire group instead of multiple times for each evaluator.

Returns:

The evaluator.