Template Function Acts::makeDirectionUnitFromPhiTheta

Function Documentation

template<typename T>
Eigen::Matrix<T, 3, 1> Acts::makeDirectionUnitFromPhiTheta(T phi, T theta)

Construct a normalized direction vector from phi and theta angle.

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 radian in the x-y plane.

  • theta: is the polar angle in radian towards the z-axis.