Acts::Experimental::detail::SupportHelper Namespace Reference

This file contains helper methods to build common support structures such as support cylinders or discs. More...

Functions
std::vector< std::shared_ptr < Surface > >	cylindricalSupport (const Transform3 &transform, const std::array< ActsScalar, 6u > &bounds, unsigned int splits=1u)
	Helper method to build cylindrical support structure.
std::vector< std::shared_ptr < Surface > >	discSupport (const Transform3 &transform, const std::array< ActsScalar, 4u > &bounds, unsigned int splits=1u)
	Helper method to build disc support structure.
void	addSupport (std::vector< std::shared_ptr< Surface >> &layerSurfaces, std::vector< size_t > &assignToAll, const Extent &layerExtent, Surface::SurfaceType layerRepresentation, const std::array< ActsScalar, 5u > &layerSupportValues, std::optional< Transform3 > layerTransform=std::nullopt, unsigned int supportSplits=1u)

Detailed Description

This file contains helper methods to build common support structures such as support cylinders or discs.

It allows to model those as Disc/CylinderSurface objects, but also - if configured such - as approximations built from palanr surfaces

Function Documentation

void Acts::Experimental::detail::SupportHelper::addSupport	(	std::vector< std::shared_ptr< Surface >> &	layerSurfaces,
		std::vector< size_t > &	assignToAll,
		const Extent &	layerExtent,
		Surface::SurfaceType	layerRepresentation,
		const std::array< ActsScalar, 5u > &	layerSupportValues,
		std::optional< Transform3 >	layerTransform = std::nullopt,
		unsigned int	supportSplits = 1u
	)

Add support to already existing surfaces

Parameters

layerSurfaces	[in, out] the surfaces to which those are added
assignToAll	[in, out] indices that are assigned to all bins in the indexing
layerExtent	the externally provided layer Extent
layerRepresentation	the shape of the layer
layerSupportValues	the support structure in numbers
layerTransform	is an optional value of the layer transform
supportSplits	the number of splits if splitting is configured

Note

this modifies the layerSurfaces and toAllIndices

Overall parameters of support surfaces

Definition at line 125 of file SupportHelper.cpp.

View newest version in sPHENIX GitHub at line 125 of file SupportHelper.cpp

References Acts::binPhi, Acts::binR, Acts::binZ, Acts::Extent::constrains(), cylindricalSupport(), discSupport(), Acts::Extent::max(), Acts::Test::maxPhi, maxR, maxZ, Acts::Extent::min(), Acts::Test::minPhi, minR, sTransform, and physmon_ckf_tracking::u.

Referenced by BOOST_AUTO_TEST_CASE(), and Acts::Experimental::LayerStructureBuilder::construct().

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std::vector< std::shared_ptr< Acts::Surface > > Acts::Experimental::detail::SupportHelper::cylindricalSupport	(	const Transform3 &	transform,
		const std::array< ActsScalar, 6u > &	bounds,
		unsigned int	splits = 1u
	)

Helper method to build cylindrical support structure.

Parameters

transform	the transform where this cylinder should be located
bounds	the boundary values: r, halfZ, halfPhi, avgPhi, bevell parameters
splits	the number of surfaces through which the surface is approximated (1u ... cylinder)

Returns

a vector of surfaces that represent this support

Definition at line 26 of file SupportHelper.cpp.

View newest version in sPHENIX GitHub at line 26 of file SupportHelper.cpp

References Acts::Test::maxPhi, Acts::Test::minPhi, ActsTests::PropagationDatasets::phi, physmon_track_finding_ttbar::r, sTransform, and physmon_ckf_tracking::u.

Referenced by addSupport(), and BOOST_AUTO_TEST_CASE().

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std::vector< std::shared_ptr< Acts::Surface > > Acts::Experimental::detail::SupportHelper::discSupport	(	const Transform3 &	transform,
		const std::array< ActsScalar, 4u > &	bounds,
		unsigned int	splits = 1u
	)

Helper method to build disc support structure.

Parameters

transform	the transform where this disc should be located
bounds	the boundary values: minR, maxR, halfPhi, avgPhi
splits	the number of surfaces through which the surface is approximated (1u ... disc)

Returns

a vector of surfaces that represent this support

Definition at line 81 of file SupportHelper.cpp.

View newest version in sPHENIX GitHub at line 81 of file SupportHelper.cpp

References Acts::Test::maxPhi, maxR, Acts::Test::minPhi, minR, ActsTests::PropagationDatasets::phi, sTransform, and physmon_ckf_tracking::u.

Referenced by addSupport(), and BOOST_AUTO_TEST_CASE().

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