The fitter-private cache. More...

#include <Acts/Vertexing/AdaptiveMultiVertexFitter.hpp>

Public Member Functions
	Cache (const MagneticFieldProvider &field, const Acts::MagneticFieldContext &magContext)
	Constructor for the multi-vertex fitter cache.
void	invalidate (const Vertex &vtx)
	Drop the scratch data associated with `vtx`.

Detailed Description

The fitter-private cache.

Holds everything that is scratch data of a running fit: the annealing state, the impact point estimator state, the magnetic field cache and the per-vertex linearization bookkeeping. The data describing what is being fitted lives in VertexFitProblem instead.

Constructor & Destructor Documentation

◆ Cache()

Acts::AdaptiveMultiVertexFitter::Cache::Cache	(	const MagneticFieldProvider &	field,
		const Acts::MagneticFieldContext &	magContext )

Constructor for the multi-vertex fitter cache.

Parameters

field	Magnetic field provider for track extrapolation
magContext	Magnetic field context for field evaluations

Member Function Documentation

◆ invalidate()

void Acts::AdaptiveMultiVertexFitter::Cache::invalidate ( const Vertex & vtx )

Drop the scratch data associated with vtx.

Must be called whenever a vertex's candidate description is re-seeded after it has already been fitted, since the cached linearization point and impact parameters then refer to a stale seed position.