Gabriele Cosmo
325 lines
12 KiB
C++
325 lines
12 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4AssemblyVolume.cc,v 1.2 2003/11/02 16:06:06 gcosmo Exp $
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// GEANT4 tag $Name: geant4-06-00 $
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//
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//
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// Class G4AssemblyVolume - implementation
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//
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// ----------------------------------------------------------------------
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#include "G4AssemblyVolume.hh"
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#include "G4PVPlacement.hh"
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#include "G4RotationMatrix.hh"
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#include "G4AffineTransform.hh"
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#include "G4LogicalVolume.hh"
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#include "G4VPhysicalVolume.hh"
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#include <strstream>
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unsigned int G4AssemblyVolume::fsInstanceCounter = 0;
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// Default constructor
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//
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G4AssemblyVolume::G4AssemblyVolume()
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: fAssemblyID( 0 )
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{
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InstanceCountPlus();
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SetAssemblyID( GetInstanceCount() );
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SetImprintsCount( 0 );
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}
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// Destructor
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//
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G4AssemblyVolume::~G4AssemblyVolume()
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{
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unsigned int howmany = fTriplets.size();
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if( howmany != 0 ) {
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for( unsigned int i = 0; i < howmany; i++ ) {
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G4RotationMatrix* pRotToClean = fTriplets[i].GetRotation();
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if( pRotToClean != 0 ) {
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delete pRotToClean;
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}
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}
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}
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fTriplets.clear();
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howmany = fPVStore.size();
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if( howmany != 0 ) {
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for( unsigned int j = 0; j < howmany; j++ ) {
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G4RotationMatrix* pRotToClean = fPVStore[j]->GetRotation();
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if( pRotToClean != 0 ) {
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delete pRotToClean;
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}
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delete fPVStore[j];
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}
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}
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fPVStore.clear();
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InstanceCountMinus();
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}
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// Add and place the given volume according to the specified
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// translation and rotation.
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//
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// The rotation matrix passed in can be 0 = identity or an address even of an object
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// on the upper stack frame. During assembly imprint, it creates anyway a new matrix
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// and keeps track of it so it can delete it later at destruction time.
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// This new policy has been adopted since user has no control on the way the rotations
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// are combined it's safer doing it this way.
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//
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// WARNING! This interface will likely change in the next major release of Geant4 from
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// a pointer to a reference due to the reason above
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void G4AssemblyVolume::AddPlacedVolume( G4LogicalVolume* pVolume,
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G4ThreeVector& translation,
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G4RotationMatrix* pRotation )
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{
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G4RotationMatrix* toStore = new G4RotationMatrix;
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if( pRotation != 0 ) {
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*toStore = *pRotation;
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}
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G4AssemblyTriplet toAdd( pVolume, translation, toStore );
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fTriplets.push_back( toAdd );
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}
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// Add and place the given volume according to the specified transformation
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//
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void G4AssemblyVolume::AddPlacedVolume( G4LogicalVolume* pVolume,
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G4Transform3D& transformation )
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{
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G4ThreeVector v = transformation.getTranslation();
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G4RotationMatrix* r = new G4RotationMatrix;
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*r = transformation.getRotation();
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G4AssemblyTriplet toAdd( pVolume, v, r );
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fTriplets.push_back( toAdd );
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}
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//
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// Create an instance of an assembly volume inside of the specified
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// mother volume. This works analogically to making stamp imprints.
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// This method makes use of the Geant4 affine transformation class.
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// The algorithm is defined as follows:
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//
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// Having rotation matrix Rm and translation vector Tm to be applied
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// inside the mother and rotation matrix Ra and translation vector Ta
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// to be applied inside the assembly itself for each of the participating
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// volumes the resulting transformation is
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//
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// Tfinal = Ta * Tm
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//
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// where Ta and Tm are constructed as
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//
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// -1 -1
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// Ta = Ra * Ta and Tm = Rm * Tm
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//
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// which in words means that we create first the affine transformations
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// by inverse rotation matrices and translations for mother and assembly.
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// The resulting final transformation to be applied to each of the
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// participating volumes is their product.
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//
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// IMPORTANT NOTE!
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// The order of multiplication is reversed when comparing to CLHEP 3D
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// transformation matrix(G4Transform3D class).
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//
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// The rotation matrix passed in can be 0 = identity or an address even of an object
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// on the upper stack frame. During assembly imprint, it creates anyway a new matrix
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// and keeps track of it so it can delete it later at destruction time.
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// This new policy has been adopted since user has no control on the way the rotations
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// are combined it's safer doing it this way.
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//
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// WARNING! This interface will likely change in the next major release of Geant4 from
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// a pointer to a reference due to the reason above
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//
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void G4AssemblyVolume::MakeImprint( G4LogicalVolume* pMotherLV,
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G4ThreeVector& translationInMother,
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G4RotationMatrix* pRotationInMother,
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G4int copyNumBase )
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{
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// If needed user can specify explicitly the base count from which to start off for the generation
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// of phys. vol. copy numbers
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// The old behaviour is preserved when copyNumBase == 0, e.g. the generated copy numbers start
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// from the count equal to current number of daughter volumes before a imprint is made
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unsigned int numberOfDaughters;
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if( copyNumBase != 0 ) {
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numberOfDaughters = pMotherLV->GetNoDaughters();
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} else {
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numberOfDaughters = copyNumBase;
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}
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// We start from the first available index
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numberOfDaughters++;
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ImprintsCountPlus();
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if( pRotationInMother == 0 ) {
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// Make it by default an indentity matrix;
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pRotationInMother = const_cast<G4RotationMatrix*>( &G4RotationMatrix::IDENTITY );
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}
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for( unsigned int i = 0; i < fTriplets.size(); i++ )
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{
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// Generate the unique name for the next PV instance
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// The name has format:
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//
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// av_WWW_impr_XXX_YYY_ZZZ
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// where the fields mean:
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// WWW - assembly volume instance number
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// XXX - assembly volume imprint number
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// YYY - the name of a log. volume we want to make a placement of
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// ZZZ - the log. volume index inside the assembly volume
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std::strstream pvName;
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pvName << "av_"
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<< GetAssemblyID()
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<< "_impr_"
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<< GetImprintsCount()
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<< "_"
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<< fTriplets[i].GetVolume()->GetName().c_str()
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<< "_pv_"
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<< i
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<< std::ends;
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// Create the transformation in this assembly volume
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G4AffineTransform Ta( fTriplets[i].GetRotation()->inverse(),
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fTriplets[i].GetTranslation() );
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// Create the transformation in a mother volume
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G4AffineTransform Tm( pRotationInMother->inverse(),
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translationInMother );
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// Combine them together
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G4AffineTransform Tfinal = Ta * Tm;
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// Extract the final absolute transformation inside a mother
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G4RotationMatrix* pFinalRotation = new G4RotationMatrix(
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Tfinal.NetRotation()
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);
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G4ThreeVector finalTranslation = Tfinal.NetTranslation();
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// Generate a new physical volume instance inside a mother
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G4VPhysicalVolume* pPlaced = new G4PVPlacement(
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pFinalRotation
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,finalTranslation
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,fTriplets[i].GetVolume()
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,pvName.str()
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,pMotherLV
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,false
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,numberOfDaughters + i
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);
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// Register the physical volume created by us so we can delete it later
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fPVStore.push_back( pPlaced );
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}
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}
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void G4AssemblyVolume::MakeImprint( G4LogicalVolume* pMotherLV,
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G4Transform3D& transformation,
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G4int copyNumBase )
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{
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// If needed user can specify explicitly the base count from which to start off for the generation
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// of phys. vol. copy numbers
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// The old behaviour is preserved when copyNumBase == 0, e.g. the generated copy numbers start
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// from the count equal to current number of daughter volumes before a imprint is made
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unsigned int numberOfDaughters;
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if( copyNumBase != 0 ) {
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numberOfDaughters = pMotherLV->GetNoDaughters();
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} else {
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numberOfDaughters = copyNumBase;
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}
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// We start from the first available index
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numberOfDaughters++;
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ImprintsCountPlus();
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for( unsigned int i = 0; i < fTriplets.size(); i++ )
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{
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// Generate the unique name for the next PV instance
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// The name has format:
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//
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// av_WWW_impr_XXX_YYY_ZZZ
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// where the fields mean:
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// WWW - assembly volume instance number
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// XXX - assembly volume imprint number
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// YYY - the name of a log. volume we want to make a placement of
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// ZZZ - the log. volume index inside the assembly volume
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std::strstream pvName;
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pvName << "av_"
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<< GetAssemblyID()
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<< "_impr_"
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<< GetImprintsCount()
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<< "_"
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<< fTriplets[i].GetVolume()->GetName().c_str()
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<< "_pv_"
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<< i
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<< std::ends;
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G4Transform3D Ta( *(fTriplets[i].GetRotation()),
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fTriplets[i].GetTranslation()
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);
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G4Transform3D Tfinal = transformation * Ta;
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// G4RotationMatrix* pFinalRotation =
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// new G4RotationMatrix( Tfinal.getRotation().inverse() );
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// G4ThreeVector finalTranslation = Tfinal.getTranslation();
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// Generate a new physical volume instance inside a mother
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G4VPhysicalVolume* pPlaced = new G4PVPlacement( Tfinal,
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fTriplets[i].GetVolume(),
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pvName.str(),
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pMotherLV,
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false,
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numberOfDaughters + i );
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// Register the physical volume created by us so we can delete it later
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fPVStore.push_back( pPlaced );
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}
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}
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unsigned int G4AssemblyVolume::GetInstanceCount() const
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{
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return G4AssemblyVolume::fsInstanceCounter;
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}
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void G4AssemblyVolume::SetInstanceCount( unsigned int value )
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{
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G4AssemblyVolume::fsInstanceCounter = value;
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}
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void G4AssemblyVolume::InstanceCountPlus()
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{
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G4AssemblyVolume::fsInstanceCounter++;
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}
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void G4AssemblyVolume::InstanceCountMinus()
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{
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G4AssemblyVolume::fsInstanceCounter--;
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}
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