Template Function Acts::makeDirectionUnitFromPhiEta

Function Documentation

template<typename T>
Eigen::Matrix<T, 3, 1> Acts::makeDirectionUnitFromPhiEta(T phi, T eta)

Construct a normalized direction vector from phi angle and pseudorapidity.

Note

The input arguments intentionally use the same template type so that a compile error occurs if inconsistent input types are used. Avoids unexpected implicit type conversions and forces the user to explicitely cast missmatched input types.

Parameters

  • phi: is the direction angle in the x-y plane.

  • eta: is the pseudorapidity towards the z-axis.