OffOriginExtension Class Reference

Class performs extension (adding new hits) of given candidate using conformal transformation w.r.t point on the trajectory. More...

#include <OffOriginExtension.h>

Inheritance diagram for OffOriginExtension:

Collaboration diagram for OffOriginExtension:

Public Member Functions
	OffOriginExtension (std::vector< const CDCWireHit * > allAxialWireHits, double levelPrecision=9)
	Constructor.
void	operator() (const std::vector< const CDCWireHit * > &inputWireHits, void *qt) final
	Main entry point for the post processing call from the QuadTreeProcessor.
std::vector< const CDCWireHit * >	roadSearch (const std::vector< const CDCWireHit * > &wireHits)
	Perform transformation for set of given hits; reference position taken as POCA of the fitted trajectory.
std::vector< const CDCWireHit * >	getHitsWRTtoRefPos (const Vector2D &refPos, float curv, float theta)
	Get hits which are compatible with given trajectory. More...
const std::vector< CDCTrack > &	getTracks () const
	Get the collected tracks.

Protected Attributes
std::vector< const CDCWireHit * >	m_allAxialWireHits
	Pool of all axial hits from which the road search may select additional hits.
std::vector< CDCTrack >	m_tracks
	Collected tracks.

Private Attributes
double	m_levelPrecision
	Precision level for the width of the off origin hough search.

Detailed Description

Class performs extension (adding new hits) of given candidate using conformal transformation w.r.t point on the trajectory.

Definition at line 26 of file OffOriginExtension.h.

Member Function Documentation

getHitsWRTtoRefPos()

std::vector< const CDCWireHit * > getHitsWRTtoRefPos	(	const Vector2D &	refPos,
		float	curv,
		float	theta
	)

Get hits which are compatible with given trajectory.

Parameters

refPos	defines 2D reference position with respect to which transformation will be performed
curv	curvarute of the track trajectory
theta	angle between x-axis and vector to the center of the circle which represents trajectory

Returns

vector of CDCWireHit objects which satisfy legendre transformation with respect to the given parameters

Definition at line 98 of file OffOriginExtension.cc.

{
  float thetaPrecision = 3.1415 / (pow(2., m_levelPrecision + 1));
  float curvPrecision = 0.15 / (pow(2., m_levelPrecision));
 
  using YSpan = AxialHitQuadTreeProcessor::YSpan;
  YSpan curvSpan{curv - curvPrecision, curv + curvPrecision};
  LookupTable<Vector2D> thetaSpan(&Vector2D::Phi, 1, theta - thetaPrecision, theta + thetaPrecision);
 
  AxialHitQuadTreeProcessor qtProcessor(refPos, curvSpan, &thetaSpan);
  qtProcessor.seed(m_allAxialWireHits);
 
  std::vector<const CDCWireHit*> newWireHits = qtProcessor.getAssignedItems();
  return newWireHits;
}

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The documentation for this class was generated from the following files:

• tracking/trackFindingCDC/legendre/quadtree/include/OffOriginExtension.h
• tracking/trackFindingCDC/legendre/quadtree/src/OffOriginExtension.cc