DataFormats: first steps toward a unified barrel/fwd track

Author: mpuccio

DataFormats/Reconstruction/include/ReconstructionDataFormats/TrackParametrizationData.h

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+// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
+// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
+// All rights not expressly granted are reserved.
+//
+// This software is distributed under the terms of the GNU General Public
+// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
+//
+// In applying this license CERN does not waive the privileges and immunities
+// granted to it by virtue of its status as an Intergovernmental Organization
+// or submit itself to any jurisdiction.
+
+/// @file TrackParametrizationData.h
+/// @brief Common storage for track parameterizations.
+
+#ifndef INCLUDE_RECONSTRUCTIONDATAFORMATS_TRACKPARAMETRIZATIONDATA_H_
+#define INCLUDE_RECONSTRUCTIONDATAFORMATS_TRACKPARAMETRIZATIONDATA_H_
+
+#include "GPUCommonDef.h"
+#include "GPUCommonRtypes.h"
+
+#include <array>
+
+namespace o2::track
+{
+
+template <typename value_T, int nParams>
+class TrackParametrizationData
+{
+ public:
+  using value_t = value_T;
+
+  GPUdDefault() TrackParametrizationData() = default;
+  GPUd() explicit TrackParametrizationData(value_t s) : mX{s} {}
+  GPUdDefault() TrackParametrizationData(const TrackParametrizationData&) = default;
+  GPUdDefault() TrackParametrizationData(TrackParametrizationData&&) = default;
+  GPUhdDefault() TrackParametrizationData& operator=(const TrackParametrizationData&) = default;
+  GPUhdDefault() TrackParametrizationData& operator=(TrackParametrizationData&&) = default;
+  GPUdDefault() ~TrackParametrizationData() = default;
+
+ protected:
+  value_t mX = 0;          ///< Intrinsic coordinate of the track parameterization
+  value_t mP[nParams] = {}; ///< Local track parameters
+
+  ClassDefNV(TrackParametrizationData, 1);
+};
+
+template <typename value_T, int nCov>
+class TrackCovarianceData
+{
+ public:
+  using value_t = value_T;
+
+  GPUdDefault() TrackCovarianceData() = default;
+  GPUdDefault() TrackCovarianceData(const TrackCovarianceData&) = default;
+  GPUdDefault() TrackCovarianceData(TrackCovarianceData&&) = default;
+  GPUhdDefault() TrackCovarianceData& operator=(const TrackCovarianceData&) = default;
+  GPUhdDefault() TrackCovarianceData& operator=(TrackCovarianceData&&) = default;
+  GPUdDefault() ~TrackCovarianceData() = default;
+
+ protected:
+  std::array<value_t, nCov> mC{}; ///< Packed covariance matrix
+
+  ClassDefNV(TrackCovarianceData, 1);
+};
+
+} // namespace o2::track
+
+#endif