Tools.h

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#pragma once
 
#include <Math/Vector3D.h>
#include <Math/Vector4D.h>
#include <optional>

namespace iguana::physics::tools {

  double const UNDEF{-10000};

  std::optional<double> PlaneAngle(
      ROOT::Math::XYZVector const v_a,
      ROOT::Math::XYZVector const v_b,
      ROOT::Math::XYZVector const v_c,
      ROOT::Math::XYZVector const v_d);

  std::optional<ROOT::Math::XYZVector> ProjectVector(
      ROOT::Math::XYZVector const v_a,
      ROOT::Math::XYZVector const v_b);

  std::optional<ROOT::Math::XYZVector> RejectVector(
      ROOT::Math::XYZVector const v_a,
      ROOT::Math::XYZVector const v_b);

  std::optional<double> VectorAngle(
      ROOT::Math::XYZVector const v_a,
      ROOT::Math::XYZVector const v_b);

  template <typename MOMENTUM_TYPE, typename AXIS_TYPE>
  std::optional<double> ParticleRapidity(
      MOMENTUM_TYPE const& momentum_vec,
      AXIS_TYPE const& axis_vec);

  double AdjustAnglePi(double ang);

  double AdjustAngleTwoPi(double ang);
 
}