Acts::StripSpacePointBuilder Namespace Reference

Classes
struct	ClusterPairingOptions
	Collection of cluster pairing options. More...
struct	ConstrainedOptions
	Collection of constrained space point options. More...
struct	CosmicOptions
	Collection of cosmic space point options. More...
struct	StripEnds
	Strip cluster details. More...

Functions
Result< double >	computeClusterPairDistance (const Vector3 &globalCluster1, const Vector3 &globalCluster2, const ClusterPairingOptions &options)
	Calculates (Delta theta)^2 + (Delta phi)^2 between two measurements.
Result< Vector3 >	computeConstrainedSpacePoint (const StripEnds &stripEnds1, const StripEnds &stripEnds2, const ConstrainedOptions &options)
Result< Vector3 >	computeCosmicSpacePoint (const StripEnds &stripEnds1, const StripEnds &stripEnds2, const CosmicOptions &options)
Vector2	computeVarianceZR (const GeometryContext &gctx, const Surface &surface1, const Vector3 &spacePoint, double localCov1, double localCov2, double theta)
	Calculate the z and r covariance from the front and back SourceLink in the strip SP formation.

Function Documentation

computeClusterPairDistance()

Result< double > Acts::StripSpacePointBuilder::computeClusterPairDistance	(	const Vector3 &	globalCluster1,
		const Vector3 &	globalCluster2,
		const ClusterPairingOptions &	options )

Calculates (Delta theta)^2 + (Delta phi)^2 between two measurements.

Parameters

globalCluster1	Global position of the measurements on the first strip
globalCluster2	Global position of the measurements on the second strip
options	Pairing options

Returns

If available, squared sum within configuration parameters

computeConstrainedSpacePoint()

Result< Vector3 > Acts::StripSpacePointBuilder::computeConstrainedSpacePoint	(	const StripEnds &	stripEnds1,
		const StripEnds &	stripEnds2,
		const ConstrainedOptions &	options )

Parameters

stripEnds1	The ends of first strip
stripEnds2	The ends of second strip
options	The constrained options

Returns

If available, the calculated space point

computeCosmicSpacePoint()

Result< Vector3 > Acts::StripSpacePointBuilder::computeCosmicSpacePoint	(	const StripEnds &	stripEnds1,
		const StripEnds &	stripEnds2,
		const CosmicOptions &	options )

Parameters

stripEnds1	The ends of first strip
stripEnds2	The ends of second strip
options	The cosmic options

Returns

If available, the calculated space point

computeVarianceZR()

Vector2 Acts::StripSpacePointBuilder::computeVarianceZR	(	const GeometryContext &	gctx,
		const Surface &	surface1,
		const Vector3 &	spacePoint,
		double	localCov1,
		double	localCov2,
		double	theta )

Calculate the z and r covariance from the front and back SourceLink in the strip SP formation.

Parameters

gctx	The current geometry context object, e.g. alignment
surface1	The surface of the first strip
spacePoint	The space point
localCov1	Local covariance of the first strip
localCov2	Local covariance of the second strip
theta	The angle between the two strips

Returns

(z, r) components of the global covariance