BFieldAccessExample.cpp File Reference

#include "Acts/MagneticField/ConstantBField.hpp"
#include "Acts/MagneticField/InterpolatedBFieldMap.hpp"
#include "Acts/MagneticField/MagneticFieldContext.hpp"
#include "Acts/Utilities/Helpers.hpp"
#include "Acts/Utilities/Units.hpp"
#include "ActsExamples/Framework/Sequencer.hpp"
#include "ActsExamples/Options/CommonOptions.hpp"
#include "ActsExamples/Plugins/BField/BFieldOptions.hpp"
#include "ActsExamples/Utilities/Options.hpp"
#include <random>
#include <string>
#include <boost/program_options.hpp>
#include <boost/progress.hpp>

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Typedefs
using	UniformDist = std::uniform_real_distribution< double >
using	RandomEngine = std::mt19937

Functions
template<typename field_t , typename field_context_t >
void	accessStepWise (field_t &bField, field_context_t &bFieldContext, size_t events, size_t theta_steps, double theta_0, double theta_step, size_t phi_steps, double phi_0, double phi_step, size_t access_steps, double access_step)
template<typename field_t , typename field_context_t >
void	accessRandom (field_t &bField, field_context_t &bFieldContext, size_t totalSteps, double radius)
int	main (int argc, char *argv[])
	main executable

Typedef Documentation

using RandomEngine = std::mt19937

Definition at line 35 of file BFieldAccessExample.cpp.

View newest version in sPHENIX GitHub at line 35 of file BFieldAccessExample.cpp

using UniformDist = std::uniform_real_distribution<double>

The main executable

Creates an InterpolatedBFieldMap from a txt or csv file It then tests random versus stepwise access with the direct getField access and the cell.getField access with cell caching

Definition at line 34 of file BFieldAccessExample.cpp.

View newest version in sPHENIX GitHub at line 34 of file BFieldAccessExample.cpp

Function Documentation

template<typename field_t , typename field_context_t >

void accessRandom	(	field_t &	bField,
		field_context_t &	bFieldContext,
		size_t	totalSteps,
		double	radius
	)

Definition at line 85 of file BFieldAccessExample.cpp.

View newest version in sPHENIX GitHub at line 85 of file BFieldAccessExample.cpp

References Acts::VectorHelpers::position().

Referenced by main().

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template<typename field_t , typename field_context_t >

void accessStepWise	(	field_t &	bField,
		field_context_t &	bFieldContext,
		size_t	events,
		size_t	theta_steps,
		double	theta_0,
		double	theta_step,
		size_t	phi_steps,
		double	phi_0,
		double	phi_step,
		size_t	access_steps,
		double	access_step
	)

Definition at line 38 of file BFieldAccessExample.cpp.

View newest version in sPHENIX GitHub at line 38 of file BFieldAccessExample.cpp

References cos(), phi, Acts::VectorHelpers::position(), and theta().

Referenced by main().

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int main	(	int	argc,
		char *	argv[]
	)

main executable

Parameters

argc	The argument count
argv	The argument list

Definition at line 121 of file BFieldAccessExample.cpp.

View newest version in sPHENIX GitHub at line 121 of file BFieldAccessExample.cpp

References kdfinder::abs(), accessRandom(), accessStepWise(), ActsExamples::Options::addBFieldOptions(), ActsExamples::Options::addSequencerOptions(), Acts::IntegrationTest::bField, ActsExamples::Sequencer::Config::events, M_PI, Acts::Test::magFieldContext, ActsExamples::Options::makeDefaultOptions(), Acts::UnitConstants::mm, nEvents, ActsExamples::Options::parse(), ActsExamples::Options::readBField(), and ActsExamples::Options::readSequencerConfig().

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