The state struct for the RiddersStepper. More...

Collaboration diagram for Acts::Experimental::RiddersStepper< stepper_impl_t >::State:

Public Member Functions
	State (const StepperImpl::State &primaryStepperStateIn)

Public Attributes
Covariance	cov = Covariance::Zero()
	The covariance of the last known bound parameters.
bool	covTransport = false
	Flag indicating whether covariance transport is enabled.
Jacobian	jacobian = Jacobian::Identity()
	The Jacobian of the last bound to bound transformation.
ConstrainedStep::Type	lastStepConstraintType
	The last constrained step type.
const IVolumeMaterial *	lastStepMaterial = nullptr
	The last material.
Direction	lastStepPropagationDirection = Direction::Forward()
	The last propagation direction.
double	lastSurfaceTolerance = 0.
	The last surface tolerance.
double	pathAccumulated = 0
	The accumulated path length during the stepping process.
StepperImpl::State	primaryStepperState
	The state of the primary stepper, which performs the nominal step.
std::vector< typename StepperImpl::State >	secondaryStepperStates
	The states of the secondary steppers, which perform steps with varied initial conditions to compute the Jacobian columns.
StepperStatistics	statistics
	Statistics for the stepper, such as the number of steps taken and the number of successful steps.
BoundParameterVariation	variationMap
	The variation map, which contains the indices of the varied parameters and the corresponding deltas applied to them.

Detailed Description

template<Concepts::SingleStepper stepper_impl_t>
struct Acts::Experimental::RiddersStepper< stepper_impl_t >::State

The state struct for the RiddersStepper.

Constructor & Destructor Documentation

template<Concepts::SingleStepper stepper_impl_t>

Acts::Experimental::RiddersStepper< stepper_impl_t >::State::State ( const StepperImpl::State & primaryStepperStateIn )

explicit

Parameters

primaryStepperStateIn the state of the primary stepper

template<Concepts::SingleStepper stepper_impl_t>

Initial value:

=

ConstrainedStep::Type::Navigator

The last constrained step type.