NumericalPropagator Class

A propagator which can advance the state from initial conditions by either taking individual integration steps or by propagating over a given time span. Note that a given instance of a propagator is NOT thread safe. So if there is a need to propagate a given state in different threads, make sure to clone the propagator for another thread using CopyT(T).

A NumericalPropagator is created by configuring a NumericalPropagatorDefinition and then calling CreatePropagator.

Inheritance Hierarchy

SystemObject
AGI.Foundation.PropagatorsNumericalPropagator

Namespace: AGI.Foundation.Propagators
Assembly: AGI.Foundation.Models (in AGI.Foundation.Models.dll) Version: 25.1.421.0 (25.1.421.0)

Syntax

C++

Copy

public sealed class NumericalPropagator : IThreadAware, 
	ICloneWithContext, IDisposable

Public NotInheritable Class NumericalPropagator
	Implements IThreadAware, ICloneWithContext, IDisposable

public ref class NumericalPropagator sealed : IThreadAware, 
	ICloneWithContext, IDisposable

[<SealedAttribute>]
type NumericalPropagator =  
    class
        interface IThreadAware
        interface ICloneWithContext
        interface IDisposable
    end

The NumericalPropagator type exposes the following members.

Properties

	Name	Description
	Converter	Gets an instance of a converter which can convert the overall raw output into the output corresponding to a particular PropagationStateElement or AuxiliaryStateElement based on a string identifier and output type. This is also the object to use when producing ephemeris data to create interpolated Point or Vector objects.
	CurrentState	Gets a copy of the raw state at the end of the last step taken. For processed state data use the ConvertStateT(String, Double) method on the Converter property.
	CurrentStepSize	Gets the current step size in seconds that the integrator will take when advancing to the next time.
	CurrentTime	Gets the time at the end of the last step taken.
	IncludeIntegratorInformationInOutput	Gets a value indicating whether the NumericalIntegrationInformation produced by the integrator will be stored in the output produced by this propagator when it creates a NumericalPropagationStateHistory.
	InitialEpoch	Gets the time at which the InitialState is defined.
	InitialState	Gets a copy of the raw initial state used to start propagation. For processed state data use the ConvertStateT(String, Double) method on the Converter property.
	IsThreadSafe	Gets a value indicating whether the methods on this instance are safe to call from multiple threads simultaneously.
	PreviousStepSize	Gets the last step size in seconds that was taken by the integrator to produce the CurrentTime and CurrentState.
	PropagationDirection	Gets the direction of propagation with regard to time, either increasing or decreasing. To reverse the direction of propagation, call either 'Propagate' or 'TakeStep' with a duration which has the opposite sign.
	StepSizeInformation	Gets information about the last step that was taken by the integrator.

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Methods

	Name	Description
	Clone	Clones this object using the specified context.
	Dispose	Releases any resources associated with this instance.
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	Propagate(Duration)	Propagates the state from the CurrentTime and CurrentState. The direction of propagation is determined by the sign of the Duration specified.
	Propagate(Duration, ITrackCalculationProgress)	Propagates the state from the CurrentTime and CurrentState. The direction of propagation is determined by the sign of the Duration specified.
	Propagate(Duration, Int32)	Propagates the state from the CurrentTime and CurrentState. The direction of propagation is determined by the sign of the Duration specified.
	Propagate(Duration, Int32, ITrackCalculationProgress)	Propagates the state from the CurrentTime and CurrentState. The direction of propagation is determined by the sign of the Duration specified.
	PropagateUntilStop(IEnumerableStoppingConditionEvaluator, ITrackCalculationProgress)	Propagates forward until one of the conditions are tripped. This will propagate Increasing by default.
	PropagateUntilStop(IEnumerableStoppingConditionEvaluator, IntegrationSense, ITrackCalculationProgress)	Propagates until one of the conditions are tripped.
	PropagateUntilStop(IEnumerableStoppingConditionEvaluator, IntegrationSense, Boolean, ITrackCalculationProgress)	Propagates until one of the conditions are tripped.
	PropagateUntilStop(IEnumerableStoppingConditionEvaluator, IntegrationSense, Boolean, Int32, ITrackCalculationProgress)	Propagates until one of the conditions are tripped.
	Reset	Resets the propagation back to the initial conditions.
	Reset(JulianDate, Double)	Resets the propagation to a new set of initial conditions at the epoch time.
	Restep	Instead of advancing from the CurrentState, reintegrate the last step that was taken by the integrator by the given step size to produce a new CurrentState and CurrentTime.
	TakeStep	Advance the state from the CurrentState by taking a single integration step. CurrentState and CurrentTime will be updated to reflect the new values.
	TakeStep(Double)	Advance the state from the CurrentState by taking a single integration step bounded by a maximum. CurrentState and CurrentTime will be updated to reflect the new values.
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Events

	Name	Description
	ExceptionDuringPropagation	Gets the instance of the event handler which will be triggered after the propagator throws an exception. If no event handler is specified then the propagator will throw a NumericalPropagationException that wraps the underlying exception.
	StepTaken	Gets the instance of the event handler which will be triggered after every time the propagator takes an integration step.

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Reference

AGI.Foundation.Propagators Namespace