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CuboidVolumeBuilder.cpp
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1 // This file is part of the Acts project.
2 //
3 // Copyright (C) 2018 CERN for the benefit of the Acts project
4 //
5 // This Source Code Form is subject to the terms of the Mozilla Public
6 // License, v. 2.0. If a copy of the MPL was not distributed with this
7 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 
10 
12 #include "Acts/Geometry/Layer.hpp"
27 
28 std::shared_ptr<const Acts::PlaneSurface>
30  const GeometryContext& /*gctx*/,
31  const CuboidVolumeBuilder::SurfaceConfig& cfg) const {
32  std::shared_ptr<PlaneSurface> surface;
33 
34  // Build transformation
35  Transform3D trafo(Transform3D::Identity() * cfg.rotation);
36  trafo.translation() = cfg.position;
37 
38  // Create and store surface
39  if (cfg.detElementConstructor) {
40  surface = Surface::makeShared<PlaneSurface>(
41  cfg.rBounds,
42  *(cfg.detElementConstructor(std::make_shared<const Transform3D>(trafo),
43  cfg.rBounds, cfg.thickness)));
44  } else {
45  surface = Surface::makeShared<PlaneSurface>(
46  std::make_shared<const Transform3D>(trafo), cfg.rBounds);
47  }
48  surface->assignSurfaceMaterial(cfg.surMat);
49  return surface;
50 }
51 
52 std::shared_ptr<const Acts::Layer> Acts::CuboidVolumeBuilder::buildLayer(
53  const GeometryContext& gctx,
55  // Build the surface
56  if (cfg.surface == nullptr) {
57  cfg.surface = buildSurface(gctx, cfg.surfaceCfg);
58  }
59  // Build transformation centered at the surface position
60  Transform3D trafo(Transform3D::Identity() * cfg.surfaceCfg.rotation);
61  trafo.translation() = cfg.surfaceCfg.position;
62 
64  lCfg.surfaceArrayCreator = std::make_shared<const SurfaceArrayCreator>();
65  LayerCreator layerCreator(lCfg);
66 
67  return layerCreator.planeLayer(gctx, {cfg.surface}, cfg.binsY, cfg.binsZ,
68  BinningValue::binX, std::nullopt,
69  std::make_shared<const Transform3D>(trafo));
70 }
71 
72 std::pair<double, double> Acts::CuboidVolumeBuilder::binningRange(
73  const GeometryContext& /*gctx*/,
74  const Acts::CuboidVolumeBuilder::VolumeConfig& cfg) const {
75  using namespace UnitLiterals;
76  // Construct return value
77  std::pair<double, double> minMax = std::make_pair(
79  for (const auto& layercfg : cfg.layerCfg) {
80  // Test if new extreme is found and set it
81  if (layercfg.surfaceCfg.position.x() - 1_um < minMax.first) {
82  minMax.first = layercfg.surfaceCfg.position.x() - 1_um;
83  }
84  if (layercfg.surfaceCfg.position.x() + 1_um > minMax.second) {
85  minMax.second = layercfg.surfaceCfg.position.x() + 1_um;
86  }
87  }
88  return minMax;
89 }
90 
91 std::shared_ptr<Acts::TrackingVolume> Acts::CuboidVolumeBuilder::buildVolume(
92  const GeometryContext& gctx,
94  // Build transformation
95  Transform3D trafo(Transform3D::Identity());
96  trafo.translation() = cfg.position;
97  // Set bounds
98  auto bounds = std::make_shared<const CuboidVolumeBounds>(
99  cfg.length.x() * 0.5, cfg.length.y() * 0.5, cfg.length.z() * 0.5);
100 
101  if (cfg.layerCfg.empty()) {
102  // Build dummy layer if no layer is given (tmp solution)
103  SurfaceConfig sCfg;
104  sCfg.position = cfg.position;
105  // Rotation of the surfaces: +pi/2 around axis y
106  Vector3D xPos(0., 0., 1.);
107  Vector3D yPos(0., 1., 0.);
108  Vector3D zPos(-1., 0., 0.);
109  sCfg.rotation.col(0) = xPos;
110  sCfg.rotation.col(1) = yPos;
111  sCfg.rotation.col(2) = zPos;
112  // Bounds
113  sCfg.rBounds = std::make_shared<const RectangleBounds>(
114  RectangleBounds(cfg.length.y() * 0.5, cfg.length.z() * 0.5));
115 
116  LayerConfig lCfg;
117  lCfg.surfaceCfg = sCfg;
118 
119  cfg.layerCfg.push_back(lCfg);
120  }
121 
122  // Gather the layers
123  LayerVector layVec;
124  if (cfg.layers.empty()) {
125  cfg.layers.reserve(cfg.layerCfg.size());
126 
127  for (auto& layerCfg : cfg.layerCfg) {
128  cfg.layers.push_back(buildLayer(gctx, layerCfg));
129  layVec.push_back(cfg.layers.back());
130  }
131  } else {
132  for (auto& lay : cfg.layers) {
133  layVec.push_back(lay);
134  }
135  }
136 
137  // Build layer array
138  std::pair<double, double> minMax = binningRange(gctx, cfg);
140  LayerArrayCreator layArrCreator(
141  lacCnf, getDefaultLogger("LayerArrayCreator", Logging::INFO));
142  std::unique_ptr<const LayerArray> layArr(
143  layArrCreator.layerArray(gctx, layVec, minMax.first, minMax.second,
145 
146  // Build confined volumes
147  if (cfg.trackingVolumes.empty())
148  for (VolumeConfig vc : cfg.volumeCfg)
149  cfg.trackingVolumes.push_back(buildVolume(gctx, vc));
150 
151  std::shared_ptr<TrackingVolume> trackVolume;
152  if (layVec.empty()) {
153  // Build TrackingVolume
154  trackVolume = TrackingVolume::create(
155  std::make_shared<const Transform3D>(trafo), bounds, cfg.volumeMaterial,
156  nullptr, nullptr, cfg.trackingVolumes, cfg.name);
157  } else {
158  // Build TrackingVolume
159  trackVolume = TrackingVolume::create(
160  std::make_shared<const Transform3D>(trafo), bounds, cfg.volumeMaterial,
161  std::move(layArr), nullptr, cfg.trackingVolumes, cfg.name);
162  }
163  return trackVolume;
164 }
165 
167  const GeometryContext& gctx, Acts::TrackingVolumePtr /*unused*/,
168  Acts::VolumeBoundsPtr /*unused*/) const {
169  // Build volumes
170  std::vector<std::shared_ptr<TrackingVolume>> volumes;
171  volumes.reserve(m_cfg.volumeCfg.size());
172  for (VolumeConfig volCfg : m_cfg.volumeCfg) {
173  volumes.push_back(buildVolume(gctx, volCfg));
174  }
175 
176  // Glue volumes
177  for (unsigned int i = 0; i < volumes.size() - 1; i++) {
178  volumes[i + 1]->glueTrackingVolume(
179  gctx, BoundarySurfaceFace::negativeFaceYZ, volumes[i].get(),
181  volumes[i]->glueTrackingVolume(gctx, BoundarySurfaceFace::positiveFaceYZ,
182  volumes[i + 1].get(),
184  }
185 
186  // Translation
187  Transform3D trafo(Transform3D::Identity());
188  trafo.translation() = m_cfg.position;
189 
190  // Size of the volume
191  auto volume = std::make_shared<const CuboidVolumeBounds>(
192  m_cfg.length.x() * 0.5, m_cfg.length.y() * 0.5, m_cfg.length.z() * 0.5);
193 
194  // Build vector of confined volumes
195  std::vector<std::pair<TrackingVolumePtr, Vector3D>> tapVec;
196  tapVec.reserve(m_cfg.volumeCfg.size());
197  for (auto& tVol : volumes) {
198  tapVec.push_back(std::make_pair(tVol, tVol->center()));
199  }
200 
201  // Set bin boundaries along binning
202  std::vector<float> binBoundaries;
203  binBoundaries.push_back(volumes[0]->center().x() -
204  m_cfg.volumeCfg[0].length.x() * 0.5);
205  for (size_t i = 0; i < volumes.size(); i++) {
206  binBoundaries.push_back(volumes[i]->center().x() +
207  m_cfg.volumeCfg[i].length.x() * 0.5);
208  }
209 
210  // Build binning
211  BinningData binData(BinningOption::open, BinningValue::binX, binBoundaries);
212  auto bu = std::make_unique<const BinUtility>(binData);
213 
214  // Build TrackingVolume array
215  std::shared_ptr<const TrackingVolumeArray> trVolArr(
216  new BinnedArrayXD<TrackingVolumePtr>(tapVec, std::move(bu)));
217 
218  // Create world volume
220  std::make_shared<const Transform3D>(trafo), volume, trVolArr, "World"));
221 
222  return mtvp;
223 }