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//! \file ReflFactory.cpp
//! \brief Reflection factory for placed volumes
//!
//! \authors Author: Andrei Gheata <andrei.gheata@cern.ch>
//!
#include "VecGeom/management/ReflFactory.h"
#include "VecGeom/volumes/LogicalVolume.h"
#include "VecGeom/volumes/PlacedVolume.h"
#include "VecGeom/volumes/UnplacedScaledShape.h"
namespace vecgeom {
inline namespace cxx {
ReflFactory::ReflFactory()
{
fNameExtension = "_refl";
}
bool ReflFactory::Place(Transformation3D const &pureTransform3D, Vector3 const &scale, std::string const &name,
vecgeom::LogicalVolume *LV, vecgeom::LogicalVolume *motherLV, int copyNo)
{
std::string name_refl = name + "_refl";
if (fVerboseLevel > 0) {
std::cout << "Place " << name << " lv " << LV << " " << LV->GetName() << " inside " << motherLV->GetName()
<< std::endl;
}
//
// reflection IS NOT present in transform3D
//
if (!IsReflection(scale)) {
// Place with pureTransform3D in the mother
auto pv1 = LV->Place(name.c_str(), &pureTransform3D);
pv1->SetCopyNo(copyNo);
motherLV->PlaceDaughter(pv1);
if (LogicalVolume *reflMotherLV = GetReflectedLV(motherLV)) {
// if mother was reflected
// reflect this LV and place it in reflected mother
auto newTransform3D = ConvertScaledToPureTransformation(pureTransform3D, scale);
auto pv2 = ReflectLV(LV, scale)->Place(name_refl.c_str(), &newTransform3D);
pv2->SetCopyNo(copyNo);
reflMotherLV->PlaceDaughter(pv2);
}
return true;
}
//
// reflection IS present in transform3D. Only (1,1,-1) currently supported
//
// assert((scale - Vector3(1, 1, -1)).Mag() < 1.e-8);
auto pv1 = ReflectLV(LV, scale)->Place(name_refl.c_str(), &pureTransform3D);
pv1->SetCopyNo(copyNo);
motherLV->PlaceDaughter(pv1);
if (LogicalVolume *reflMotherLV = GetReflectedLV(motherLV)) {
// if mother was reflected
// place the refLV consituent in reflected mother
auto newTransform3D = ConvertScaledToPureTransformation(pureTransform3D, scale);
auto pv2 = LV->Place(name.c_str(), &newTransform3D);
pv2->SetCopyNo(copyNo);
reflMotherLV->PlaceDaughter(pv2);
}
return true;
}
vecgeom::LogicalVolume *ReflFactory::GetConstituentLV(vecgeom::LogicalVolume *reflLV) const
{
// Returns the consituent volume of the given reflected volume,
// nullptr if the given reflected volume was not found.
LogicalVolumesMapIterator it = fReflectedLVMap.find(reflLV);
if (it == fReflectedLVMap.end()) return nullptr;
return (*it).second;
}
vecgeom::LogicalVolume *ReflFactory::GetReflectedLV(vecgeom::LogicalVolume *lv) const
{
// Returns the reflected volume of the given consituent volume,
// nullptr if the given volume was not reflected.
LogicalVolumesMapIterator it = fConstituentLVMap.find(lv);
if (it == fConstituentLVMap.end()) return nullptr;
return (*it).second;
}
vecgeom::Transformation3D ReflFactory::ConvertScaledToPureTransformation(Transformation3D const &pureTransform3D,
Vector3 const &scale)
{
Transformation3D scale3D(0, 0, 0, 0, 0, 0, scale[0], scale[1], scale[2]);
Transformation3D scale3Dinv;
scale3D.Inverse(scale3Dinv);
// long-cut for scale * pureTransfore * scale.Inverse()
Transformation3D newTransform3D = scale3D;
newTransform3D.MultiplyFromRight(pureTransform3D);
newTransform3D.MultiplyFromRight(scale3Dinv);
return newTransform3D;
}
bool ReflFactory::IsConstituent(vecgeom::LogicalVolume const *lv) const
{
// Returns true if the given volume has been already reflected
// (is in the map of constituent volumes).
return (fConstituentLVMap.find((vecgeom::LogicalVolume *)(lv)) != fConstituentLVMap.end());
}
bool ReflFactory::IsReflected(vecgeom::LogicalVolume const *lv) const
{
// Returns true if the given volume is a reflected volume
// (is in the map reflected volumes).
return (fReflectedLVMap.find((vecgeom::LogicalVolume *)(lv)) != fReflectedLVMap.end());
}
vecgeom::LogicalVolume *ReflFactory::ReflectLV(vecgeom::LogicalVolume *LV, Vector3 const &scale)
{
// Gets/creates the reflected solid and logical volume
// and copies + transforms LV daughters.
vecgeom::LogicalVolume *refLV = GetReflectedLV(LV);
if (!refLV) {
// create new (reflected) objects
refLV = CreateReflectedLV(LV, scale);
// process daughters
ReflectDaughters(LV, refLV, scale);
}
return refLV;
}
vecgeom::LogicalVolume *ReflFactory::CreateReflectedLV(vecgeom::LogicalVolume *LV, Vector3 const &scale)
{
// Creates the reflected solid and logical volume
// and add the logical volumes pair in the maps.
// consistency check
//
assert(fReflectedLVMap.find(LV) == fReflectedLVMap.end());
vecgeom::UnplacedScaledShape *refSolid =
new vecgeom::UnplacedScaledShape(LV->GetUnplacedVolume(), scale[0], scale[1], scale[2]);
vecgeom::LogicalVolume *refLV = new LogicalVolume((std::string(LV->GetName()) + "_refl").c_str(), refSolid);
fConstituentLVMap[LV] = refLV;
fReflectedLVMap[refLV] = LV;
return refLV;
}
void ReflFactory::ReflectDaughters(vecgeom::LogicalVolume *LV, vecgeom::LogicalVolume *refLV, Vector3 const &scale)
{
// Reflects daughters recursively.
for (auto *dPV : LV->GetDaughters()) {
ReflectPlacedVolume(dPV, refLV, scale);
}
}
void ReflFactory::ReflectPlacedVolume(vecgeom::VPlacedVolume const *dPV, vecgeom::LogicalVolume *refLV,
Vector3 const &scale)
{
// Copies and transforms daughter of PVPlacement type of
// a constituent volume into a reflected volume.
auto dLV = (vecgeom::LogicalVolume *)dPV->GetLogicalVolume();
// update daughter transformation
//
auto dt = ConvertScaledToPureTransformation(*dPV->GetTransformation(), scale);
vecgeom::LogicalVolume *refDLV;
if (!IsReflected(dLV)) {
// get reflected volume if already created, or create one
refDLV = GetReflectedLV(dLV);
if (refDLV == nullptr) {
// create new daughter solid and logical volume
//
if (fVerboseLevel > 0) {
std::cout << "Daughter: " << dPV << " " << dLV->GetName() << "_" << dPV->GetCopyNo() << " will be reflected."
<< std::endl;
}
refDLV = CreateReflectedLV(dLV, scale);
// recursive call
//
ReflectDaughters(dLV, refDLV, scale);
}
} else {
if (fVerboseLevel > 0) {
std::cout << "Daughter: " << dPV << " " << dLV->GetName() << "_" << dPV->GetCopyNo()
<< " will be reconstitued.\n";
}
refDLV = GetConstituentLV(dLV);
}
// create new daughter physical volume
// with updated transformation
auto pv = refDLV->Place(dPV->GetName(), &dt);
pv->SetCopyNo(dPV->GetCopyNo());
refLV->PlaceDaughter(pv);
}
void ReflFactory::Clean()
{
fConstituentLVMap.clear();
fReflectedLVMap.clear();
}
} // namespace cxx
} // namespace vecgeom
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