Geant4/src/Geant4DetectorElement.cpp

0001 // This file is part of the ACTS project.
0002 //
0003 // Copyright (C) 2016 CERN for the benefit of the ACTS project
0004 //
0005 // This Source Code Form is subject to the terms of the Mozilla Public
0006 // License, v. 2.0. If a copy of the MPL was not distributed with this
0007 // file, You can obtain one at https://mozilla.org/MPL/2.0/.
0008
0009 #include "ActsPlugins/Geant4/Geant4DetectorElement.hpp"
0010
0011 #include "Acts/Surfaces/Surface.hpp"
0012
0013 #include <utility>
0014
0015 using namespace Acts;
0016
0017 namespace ActsPlugins {
0018
0019 Geant4DetectorElement::Geant4DetectorElement(std::shared_ptr<Surface> surface,
0020                                              const G4VPhysicalVolume& g4physVol,
0021                                              const Transform3& toGlobal,
0022                                              double thickness)
0023     : m_surface(std::move(surface)),
0024       m_g4physVol(&g4physVol),
0025       m_toGlobal(toGlobal),
0026       m_thickness(thickness) {
0027   if (m_surface == nullptr) {
0028     throw std::invalid_argument(
0029         "Geant4DetectorElement: Surface cannot be nullptr");
0030   }
0031   if (m_surface->isSensitive()) {
0032     throw std::logic_error(
0033         "Geant4DetectorElement: Surface already has an associated detector "
0034         "element");
0035   }
0036   if (thickness > 0.) {
0037     m_surface->assignThickness(m_thickness);
0038   }
0039   m_surface->assignSurfacePlacement(*this);
0040 }
0041
0042 const Transform3& Geant4DetectorElement::localToGlobalTransform(
0043     const GeometryContext& /*gctx*/) const {
0044   return m_toGlobal;
0045 }
0046
0047 const Surface& Geant4DetectorElement::surface() const {
0048   return *m_surface;
0049 }
0050
0051 Surface& Geant4DetectorElement::surface() {
0052   return *m_surface;
0053 }
0054
0055 double Geant4DetectorElement::thickness() const {
0056   return m_thickness;
0057 }
0058
0059 const G4VPhysicalVolume& Geant4DetectorElement::g4PhysicalVolume() const {
0060   return *m_g4physVol;
0061 }
0062
0063 }  // namespace ActsPlugins