SurfaceMeasurement.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.
 
#ifndef ALICEO2_ITSMFT_TRACKING_SURFACEMEASUREMENT_H_
#define ALICEO2_ITSMFT_TRACKING_SURFACEMEASUREMENT_H_
 
#include <type_traits>
 
#include "GPUCommonDef.h"
namespace o2::itsmft::tracking
{
 
// q is normal to the surface. The measured coordinates are always (u, v).
struct SurfaceFramePoint {
  float q{0.f};
  float u{0.f};
  float v{0.f};
  float frameAngle{0.f};
};
 
// Packed symmetric covariance of the measured (u, v) coordinates.
struct SurfaceCovariance2F {
  float uu{0.f};
  float uv{0.f};
  float vv{0.f};
};
 
struct SurfaceMeasurement {
  SurfaceFramePoint frame{};
  SurfaceCovariance2F covariance{};
};
 
} // namespace o2::itsmft::tracking
 
#endif /* ALICEO2_ITSMFT_TRACKING_SURFACEMEASUREMENT_H_ */