Class Acts::SpacePointBuilder¶

template<typename spacepoint_t> class SpacePointBuilder¶

After the particle interaction with surfaces are recorded and digitized measurements on the pixel or strip detectors need further treatment.

This class takes the SouceLinks and provides the corresponding space points.

Public Functions

SpacePointBuilder(const SpacePointBuilderConfig &cfg, std::function<spacepoint_t(Acts::Vector3, Acts::Vector2, boost::container::static_vector<SourceLink, 2>)> func, std::unique_ptr<const Logger> logger = getDefaultLogger("SpamcePointBuilder", Logging::INFO))¶

Parameters

cfg – The configuration for the space point builder
func – The function that provides user’s SP constructor with global pos, global cov, and sourceLinks.
logger – The logging instance

template<template<typename...> typename container_t> void buildSpacePoint(const GeometryContext &gctx, const std::vector<SourceLink> &sourceLinks, const SpacePointBuilderOptions &opt, std::back_insert_iterator<container_t<spacepoint_t>> spacePointIt) const¶

Calculates the space points out of a given collection of SourceLinks and stores the results.

Parameters

gctx – The current geometry context object, e.g. alignment
sourceLinks – vector of Sourcelink
opt – option for the space point bulding. It contains the ends of the strips for strip SP building
spacePointIt – Output iterator for the space point

void makeSourceLinkPairs(const GeometryContext &gctx, const std::vector<SourceLink> &slinksFront, const std::vector<SourceLink> &slinksBack, std::vector<std::pair<SourceLink, SourceLink>> &slinkPairs, const StripPairOptions &pairOpt) const¶

Searches possible combinations of two SourceLinks on different surfaces that may come from the same particles.

Parameters