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GaussianGridTrackDensity.hpp
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the newest version in sPHENIX GitHub for file GaussianGridTrackDensity.hpp
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// This file is part of the Acts project.
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//
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// Copyright (C) 2020 CERN for the benefit of the Acts project
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#pragma once
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#include "
Acts/Definitions/Algebra.hpp
"
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#include "
Acts/EventData/TrackParameters.hpp
"
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#include "
Acts/Utilities/Result.hpp
"
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namespace
Acts {
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template
<
int
mainGr
id
Size = 2000,
int
trkGr
id
Size = 15>
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class
GaussianGridTrackDensity
{
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// Assert odd trkGridSize
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static_assert(trkGridSize % 2);
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// Assert bigger main grid than track grid
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static_assert(mainGridSize > trkGridSize);
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public
:
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using
MainGridVector
= Eigen::Matrix<float, mainGridSize, 1>;
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using
TrackGridVector
= Eigen::Matrix<float, trkGridSize, 1>;
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struct
Config
{
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Config
(
float
zMinMax_ = 100) :
zMinMax
(zMinMax_) {
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binSize
= 2. *
zMinMax
/ mainGridSize;
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}
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// Min and max z value of big grid
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float
zMinMax
;
// mm
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// Z size of one single bin in grid
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float
binSize
;
// mm
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// Do NOT use just the z-bin with the highest
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// track density, but instead check the (up to)
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// first three density maxima (only those that have
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// a maximum relative deviation of 'relativeDensityDev'
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// from the main maximum) and take the z-bin of the
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// maximum with the highest surrounding density sum
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bool
useHighestSumZPosition
=
false
;
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// The maximum relative density deviation from the main
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// maximum to consider the second and third maximum for
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// the highest-sum approach from above
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float
maxRelativeDensityDev
= 0.01;
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};
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GaussianGridTrackDensity
(
const
Config
&
cfg
) :
m_cfg
(cfg) {}
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Result<float>
getMaxZPosition
(
MainGridVector
& mainGrid)
const
;
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Result<std::pair<float, float>
>
getMaxZPositionAndWidth
(
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MainGridVector
& mainGrid)
const
;
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std::pair<int, TrackGridVector>
addTrack
(
const
BoundTrackParameters
& trk,
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MainGridVector
& mainGrid)
const
;
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void
removeTrackGridFromMainGrid
(
int
zBin,
const
TrackGridVector
& trkGrid,
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MainGridVector
& mainGrid)
const
;
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private
:
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void
addTrackGridToMainGrid
(
int
zBin,
const
TrackGridVector
& trkGrid,
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MainGridVector
& mainGrid)
const
;
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void
modifyMainGridWithTrackGrid
(
int
zBin,
const
TrackGridVector
& trkGrid,
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MainGridVector
& mainGrid,
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int
modifyModeSign)
const
;
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TrackGridVector
createTrackGrid
(
float
d0,
float
distCtrZ,
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const
Acts::SquareMatrix2
&
cov
)
const
;
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Result<float>
estimateSeedWidth
(
MainGridVector
& mainGrid,
float
maxZ
)
const
;
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float
normal2D
(
float
d,
float
z
,
const
SquareMatrix2
&
cov
)
const
;
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int
getHighestSumZPosition
(
MainGridVector
& mainGrid)
const
;
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double
getDensitySum
(
const
MainGridVector
& mainGrid,
int
pos
)
const
;
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Config
m_cfg
;
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};
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}
// namespace Acts
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#include "
Acts/Vertexing/GaussianGridTrackDensity.ipp
"
acts
blob
sPHENIX
Core
include
Acts
Vertexing
GaussianGridTrackDensity.hpp
Built by
Jin Huang
. updated:
Sat Feb 17 2024 22:17:35
using
1.8.2 with
sPHENIX GitHub integration