Class Acts::SeedFinder¶

template<typename external_spacepoint_t, typename platform_t = void*> class SeedFinder¶

Disallow default instantiation, copy, assignment

SeedFinder() = default¶

SeedFinder(const SeedFinder<external_spacepoint_t, platform_t>&) = delete¶

SeedFinder<external_spacepoint_t, platform_t> &operator=(const SeedFinder<external_spacepoint_t, platform_t>&) = default¶

Public Functions

SeedFinder(const Acts::SeedFinderConfig<external_spacepoint_t> &config)¶

The only constructor.

Requires a config object.

Parameters: config – the configuration for the SeedFinder

~SeedFinder() = default¶

template<template<typename...> typename container_t, typename sp_range_t> void createSeedsForGroup(const Acts::SeedFinderOptions &options, SeedingState &state, const Acts::SpacePointGrid<external_spacepoint_t> &grid, std::back_insert_iterator<container_t<Seed<external_spacepoint_t>>> outIt, const sp_range_t &bottomSPs, const std::size_t middleSPs, const sp_range_t &topSPs, const Acts::Range1D<float> &rMiddleSPRange) const¶

Create all seeds from the space points in the three iterators.

Can be used to parallelize the seed creation

Note

Ranges must return pointers.

Note

Ranges must be separate objects for each parallel call.

Parameters

options – frequently changing configuration (like beam position)
state – State object that holds memory used
grid – The grid with space points
outIt – Output iterator for the seeds in the group
bottomSPs – group of space points to be used as innermost SP in a seed.
middleSPs – group of space points to be used as middle SP in a seed.
topSPs – group of space points to be used as outermost SP in a seed.
rMiddleSPRange – range object containing the minimum and maximum r for middle SP for a certain z bin.

template<typename sp_range_t> std::vector<Seed<external_spacepoint_t>> createSeedsForGroup(const Acts::SeedFinderOptions &options, const Acts::SpacePointGrid<external_spacepoint_t> &grid, const sp_range_t &bottomSPs, const std::size_t middleSPs, const sp_range_t &topSPs) const¶

Compatibility method for the new-style seed finding API.

This method models the old-style seeding API where we only need a container for the bottom, middle, and top space points. Also, the results are returned by value instead of inserted into an inserter.

Note

This method is a very simply wrapper around the more modern API.

Warning

The performance of the seeding code is far greater if the new API is used, and this is recommended for all new uses which do not require backwards-compatibility.

Template Parameters

sp_range_t – container type for the seed point collections.

Parameters