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TestCovarianceTool.hpp
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1 // This file is part of the Acts project.
2 //
3 // Copyright (C) 2018 CERN for the benefit of the Acts project
4 //
5 // This Source Code Form is subject to the terms of the Mozilla Public
6 // License, v. 2.0. If a copy of the MPL was not distributed with this
7 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 
9 #pragma once
10 
11 namespace Acts {
13  public:
15  ~CovarianceTool() = default;
16 
27  template <typename SpacePoint>
28  Acts::Vector2 getCovariances(const SpacePoint* sp, float zAlign = 0,
29  float rAlign = 0, float sigma = 1);
30 };
31 template <typename SpacePoint>
33  float zAlign, float rAlign,
34  float sigma) {
36  cov[0] = ((*sp).varianceR + rAlign * rAlign) * sigma;
37  cov[1] = ((*sp).varianceZ + zAlign * zAlign) * sigma;
38  return cov;
39 }
40 } // namespace Acts