SymmetricLayerFinder Class Reference

#include <SymmetricLayerFinder.h>

Public Member Functions
const ForwardDetLayer *	mirror (const ForwardDetLayer *layer)
FDLC	mirror (const FDLC &input)
	SymmetricLayerFinder (const FDLC &)

Private Types
typedef FDLC::const_iterator	ConstFDLI
typedef std::vector< const ForwardDetLayer * >	FDLC
typedef FDLC::iterator	FDLI
typedef std::map< const ForwardDetLayer *, const ForwardDetLayer *, std::less < const ForwardDetLayer * > >	ForwardMapType
typedef std::pair< const ForwardDetLayer *, const ForwardDetLayer * >	PairType

Private Member Functions
const ForwardDetLayer *	mirrorPartner (const ForwardDetLayer *layer, const FDLC &rightLayers)

Private Attributes
ForwardMapType	theForwardMap

Detailed Description

A symmetrisation algorithm for layer navigation. For every ForwardDetLayer returns a pointer to the symmetric one with respect to origin.

Definition at line 17 of file SymmetricLayerFinder.h.

Member Typedef Documentation

typedef FDLC::const_iterator SymmetricLayerFinder::ConstFDLI

private

Definition at line 21 of file SymmetricLayerFinder.h.

typedef std::vector<const ForwardDetLayer*> SymmetricLayerFinder::FDLC

private

Definition at line 19 of file SymmetricLayerFinder.h.

typedef FDLC::iterator SymmetricLayerFinder::FDLI

private

Definition at line 20 of file SymmetricLayerFinder.h.

typedef std::map< const ForwardDetLayer*, const ForwardDetLayer*, std::less<const ForwardDetLayer*> > SymmetricLayerFinder::ForwardMapType

private

Definition at line 38 of file SymmetricLayerFinder.h.

typedef std::pair< const ForwardDetLayer*, const ForwardDetLayer*> SymmetricLayerFinder::PairType

private

Definition at line 22 of file SymmetricLayerFinder.h.

Constructor & Destructor Documentation

SymmetricLayerFinder::SymmetricLayerFinder

(

const FDLC &

flc

)

Definition at line 15 of file SymmetricLayerFinder.cc.

References Exception, and i.

{
  ConstFDLI middle = find_if( flc.begin(), flc.end(), not1(DetBelowZ(0)));

  FDLC leftLayers = FDLC( flc.begin(),  middle);
  FDLC rightLayers = FDLC( middle, flc.end());
  vector<PairType> foundPairs;

  for ( FDLI i = leftLayers.begin(); i != leftLayers.end(); i++) {
   const  ForwardDetLayer* partner = mirrorPartner( *i, rightLayers);
    //if ( partner == 0) throw DetLogicError("Assymmetric forward layers in Tracker");
    if ( partner == 0) throw cms::Exception("SymmetricLayerFinder", "Assymmetric forward layers in Tracker");

    foundPairs.push_back( make_pair( *i, partner));
  }

  // fill the map
  for ( vector<PairType>::iterator ipair = foundPairs.begin();
    ipair != foundPairs.end(); ipair++) {
    theForwardMap[ipair->first]  = ipair->second;
    theForwardMap[ipair->second] = ipair->first;
  }
}

Member Function Documentation

const ForwardDetLayer* SymmetricLayerFinder::mirror ( const ForwardDetLayer *  layer )

inline

Definition at line 28 of file SymmetricLayerFinder.h.

Referenced by CosmicNavigationSchool::buildAdditionalForwardLinks(), CosmicNavigationSchool::linkBarrelLayers(), SimpleNavigationSchool::linkBarrelLayers(), SimpleNavigationSchool::linkForwardLayers(), and BeamHaloNavigationSchool::linkOtherEndLayers().

                                                               {
    return theForwardMap[layer];
  }

SymmetricLayerFinder::FDLC SymmetricLayerFinder::mirror

(

const FDLC &

input

)

Definition at line 60 of file SymmetricLayerFinder.cc.

References i, and mps_fire::result.

                                               {
  FDLC result;
  for ( ConstFDLI  i = input.begin(); i != input.end(); i++) {
    result.push_back( mirror(*i));
  }
  return result;
}

const ForwardDetLayer * SymmetricLayerFinder::mirrorPartner ( const ForwardDetLayer *  layer, const FDLC &  rightLayers  )

private

Definition at line 39 of file SymmetricLayerFinder.cc.

References a, funct::abs(), GeometricSearchDet::position(), mps_fire::result, ForwardDetLayer::specificSurface(), and PV3DBase< T, PVType, FrameType >::z().

{

  auto mirrorImage = [=]( const ForwardDetLayer* a) ->bool {
    auto zdiff = a->position().z() + layer->position().z();
    auto rdiff = a->specificSurface().innerRadius() -
      layer->specificSurface().innerRadius();

    // equality based on z position and inner radius
    return std::abs(zdiff) < 2.f && std::abs(rdiff) < 1.f; // units are cm
  };


  ConstFDLI result =
    find_if( rightLayers.begin(), rightLayers.end(), mirrorImage);
  if ( result == rightLayers.end()) return 0;
  else return *result;
}

Member Data Documentation

ForwardMapType SymmetricLayerFinder::theForwardMap

private

Definition at line 40 of file SymmetricLayerFinder.h.