PhysicsStepUtils.hh File Reference

#include "corecel/Assert.hh"
#include "corecel/random/distribution/Selector.hh"
#include "ParticleTrackView.hh"
#include "PhysicsTrackView.hh"

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Functions
CELER_FUNCTION StepLimit	celeritas::optical::calc_physics_step_limit (ParticleTrackView const &particle, PhysicsTrackView &physics)
	Calculate the discrete physics step limit for the given track.
template<class Engine >
CELER_FUNCTION ActionId	celeritas::optical::select_discrete_interaction (ParticleTrackView const &particle, PhysicsTrackView const &physics, Engine &rng)
	Randomly sample a discrete interaction by their cross sections.

Function Documentation

calc_physics_step_limit()

CELER_FUNCTION StepLimit celeritas::optical::calc_physics_step_limit ( ParticleTrackView const &  particle, PhysicsTrackView &  physics  )

inline

Calculate the discrete physics step limit for the given track.

The total cross section is cached in the PhysicsTrackView.

select_discrete_interaction()

template<class Engine >

CELER_FUNCTION ActionId celeritas::optical::select_discrete_interaction	(	ParticleTrackView const &	particle,
		PhysicsTrackView const &	physics,
		Engine &	rng
	)

Randomly sample a discrete interaction by their cross sections.

Should be performed after discrete select action has reset the MFP, and the macroscopic cross sections have been built.