ATLAS Offline Software
SpacepointFeatureTool.cxx
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1 /*
2  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
3 */
4 
5 #include "SpacepointFeatureTool.h"
6 #include <cmath>
7 
8 #include "InDetReadoutGeometry/SiDetectorElement.h"
9 #include "InDetPrepRawData/SiCluster.h"
10 #include "InDetPrepRawData/PixelCluster.h"
11 #include "InDetPrepRawData/SCT_Cluster.h"
12 
13 #include "PixelReadoutGeometry/PixelModuleDesign.h"
14 #include "SCT_ReadoutGeometry/SCT_ModuleSideDesign.h"
15 
16 InDet::SpacepointFeatureTool::SpacepointFeatureTool(const std::string& type,
17  const std::string& name,
18  const IInterface* parent)
19  : base_class(type, name, parent), m_SCT_ID(nullptr) {
20  declareInterface<ISpacepointFeatureTool>(this);
21 }
22 
23 StatusCode InDet::SpacepointFeatureTool::initialize() {
24  // Grab PixelID helper
25  ATH_CHECK (detStore()->retrieve(m_pixelID, "PixelID") );
26 
27  // Grab SCT_ID helper
28  ATH_CHECK (detStore()->retrieve(m_SCT_ID,"SCT_ID") );
29 
30  return StatusCode::SUCCESS;
31 }
32 
33 std::map<std::string, float> InDet::SpacepointFeatureTool::getFeatures(
34  const Trk::SpacePoint* sp) const {
35  // see the naming conventions in ACORN
36  // https://gitlab.cern.ch/gnn4itkteam/acorn/-/blob/dev/acorn/stages/data_reading/models/athena_root_utils.py?ref_type=heads#L19
37  std::map<std::string, float> features;
38  features["x"] = sp->globalPosition().x();
39  features["y"] = sp->globalPosition().y();
40  features["z"] = sp->globalPosition().z();
41  features["r"] = sp->r();
42  features["phi"] = sp->phi();
43  features["eta"] = sp->eta();
44 
45  const InDet::SiCluster *cluster_1 = static_cast<const InDet::SiCluster *>(sp->clusterList().first);
46  // get the cluster position
47  features["cluster_x_1"] = cluster_1->globalPosition().x();
48  features["cluster_y_1"] = cluster_1->globalPosition().y();
49  features["cluster_z_1"] = cluster_1->globalPosition().z();
50  features["cluster_r_1"] = std::sqrt(cluster_1->globalPosition().x() * cluster_1->globalPosition().x() + cluster_1->globalPosition().y() * cluster_1->globalPosition().y());
51  features["cluster_phi_1"] = std::atan2(cluster_1->globalPosition().y(), cluster_1->globalPosition().x());
52  features["cluster_eta_1"] = -1 * std::log(std::tan(0.5 * std::atan2(features["cluster_r_1"], features["cluster_z_1"])));
53 
54  const InDet::SiCluster *cluster_2 = static_cast<const InDet::SiCluster *>(sp->clusterList().second);
55  bool isStrip = (cluster_2 != nullptr);
56 
57  // get the cluster shape
58  float charge_count_1 = 0;
59  int pixel_count_1 = 0;
60  float loc_eta_1 = 0, loc_phi_1 = 0; // clusterShape: [leta, lphi]
61  float glob_eta_1 = 0, glob_phi_1 = 0; // clusterShape: [geta, gphi]
62  float localDir0_1 = 0, localDir1_1 = 0, localDir2_1 = 0; // clusterShape: [lengthDir0, lengthDir1, lengthDir2]
63  float lengthDir0_1 = 0, lengthDir1_1 = 0, lengthDir2_1 = 0; // clusterShape: [lengthDir0, lengthDir1, lengthDir2]
64  float eta_angle_1 = 0, phi_angle_1 = 0;
65 
66  // 1: {hardware: PIXEL, barrel_endcap: -2}
67  // 2: {hardware: STRIP, barrel_endcap: -2}
68  // 3: {hardware: PIXEL, barrel_endcap: 0}
69  // 4: {hardware: STRIP, barrel_endcap: 0}
70  // 5: {hardware: PIXEL, barrel_endcap: 2}
71  // 6: {hardware: STRIP, barrel_endcap: 2}
72  int region = 0;
73 
74  if (!isStrip) {
75  const InDet::PixelCluster* cluster = dynamic_cast<const InDet::PixelCluster*>(cluster_1);
76  const InDetDD::SiDetectorElement *element = cluster->detectorElement();
77  int barrel_endcap = m_pixelID->barrel_ec(cluster->identify());
78  switch (barrel_endcap) {
79  case -2:
80  region = 1;
81  break;
82  case 0:
83  region = 3;
84  break;
85  case 2:
86  region = 5;
87  break;
88  default:
89  ATH_MSG_ERROR("Unknown barrel_endcap: " << barrel_endcap);
90  break;
91  }
92 
93 
94  // boundary of the cluster in the local module.
95  int min_eta = 999;
96  int min_phi = 999;
97  int max_eta = -999;
98  int max_phi = -999;
99  for (unsigned int rdo = 0; rdo < cluster->rdoList().size(); rdo++) {
100  charge_count_1 += cluster->totList().at(rdo);
101  ++ pixel_count_1;
102 
103  const auto &rdoID = cluster->rdoList().at(rdo);
104  InDetDD::SiCellId cellID = element->cellIdFromIdentifier(rdoID);
105  int phi = cellID.phiIndex();
106  int eta = cellID.etaIndex();
107  if (min_eta > eta)
108  min_eta = eta;
109  if (min_phi > phi)
110  min_phi = phi;
111  if (max_eta < eta)
112  max_eta = eta;
113  if (max_phi < phi)
114  max_phi = phi;
115  }
116 
117 
118  const InDetDD::PixelModuleDesign *design = dynamic_cast<const InDetDD::PixelModuleDesign *>(&element->design());
119 
120  InDetDD::SiLocalPosition localPos_entry = design->localPositionOfCell(InDetDD::SiCellId(min_phi, min_eta));
121  InDetDD::SiLocalPosition localPos_exit = design->localPositionOfCell(InDetDD::SiCellId(max_phi, max_eta));
122 
123  Amg::Vector3D localStartPosition(localPos_entry.xEta() - 0.5 * element->etaPitch(),
124  localPos_entry.xPhi() - 0.5 * element->phiPitch(),
125  -0.5 * element->thickness());
126  Amg::Vector3D localEndPosition(localPos_exit.xEta() + 0.5 * element->etaPitch(),
127  localPos_exit.xPhi() + 0.5 * element->phiPitch(), 0.5 * element->thickness());
128 
129  // local direction in local coordinates
130  Amg::Vector3D localDirection = localEndPosition - localStartPosition;
131  cartesion_to_spherical(localDirection, loc_eta_1, loc_phi_1);
132 
133  localDir0_1 = localDirection[0];
134  localDir1_1 = localDirection[1];
135  localDir2_1 = localDirection[2];
136 
137  Amg::Vector3D globalStartPosition = element->globalPosition(localStartPosition);
138  Amg::Vector3D globalEndPosition = element->globalPosition(localEndPosition);
139 
140  Amg::Vector3D direction = globalEndPosition - globalStartPosition;
141  cartesion_to_spherical(direction, glob_eta_1, glob_phi_1);
142 
143  Amg::Vector3D my_phiax = element->phiAxis();
144  Amg::Vector3D my_etaax = element->etaAxis();
145  Amg::Vector3D my_normal = element->normal();
146 
147  float trkphicomp = direction.dot(my_phiax);
148  float trketacomp = direction.dot(my_etaax);
149  float trknormcomp = direction.dot(my_normal);
150  eta_angle_1 = atan2(trknormcomp, trketacomp);
151  phi_angle_1 = atan2(trknormcomp, trkphicomp);
152  } else {
153  // first cluster of the strip detector.
154  auto status = getSCTClusterShapeInfo_fn(cluster_1, charge_count_1, pixel_count_1, loc_eta_1, loc_phi_1,
155  glob_eta_1, glob_phi_1,
156  localDir0_1, localDir1_1, localDir2_1,
157  lengthDir0_1, lengthDir1_1, lengthDir2_1,
158  eta_angle_1, phi_angle_1
159  );
160  if (status.isFailure()) {
161  ATH_MSG_ERROR("Failed at " << __LINE__ << " of getting SCT cluster shape info.");
162  }
163  auto cluster = dynamic_cast<const InDet::SCT_Cluster*>(cluster_1);
164  int barrel_endcap = m_SCT_ID->barrel_ec(cluster->identify());
165  switch (barrel_endcap) {
166  case -2:
167  region = 2;
168  break;
169  case 0:
170  region = 4;
171  break;
172  case 2:
173  region = 6;
174  break;
175  default:
176  ATH_MSG_ERROR("Unknown barrel_endcap: " << barrel_endcap);
177  break;
178  }
179  }
180  features["charge_count_1"] = charge_count_1;
181  features["count_1"] = pixel_count_1;
182  features["loc_eta_1"] = loc_eta_1;
183  features["loc_phi_1"] = loc_phi_1;
184  features["glob_eta_1"] = glob_eta_1;
185  features["glob_phi_1"] = glob_phi_1;
186  features["localDir0_1"] = localDir0_1;
187  features["localDir1_1"] = localDir1_1;
188  features["localDir2_1"] = localDir2_1;
189  features["lengthDir0_1"] = lengthDir0_1;
190  features["lengthDir1_1"] = lengthDir1_1;
191  features["lengthDir2_1"] = lengthDir2_1;
192  features["eta_angle_1"] = eta_angle_1;
193  features["phi_angle_1"] = phi_angle_1;
194  features["region"] = region;
195 
196  if (isStrip) {
197  features["cluster_x_2"] = cluster_2->globalPosition().x();
198  features["cluster_y_2"] = cluster_2->globalPosition().y();
199  features["cluster_z_2"] = cluster_2->globalPosition().z();
200  features["cluster_r_2"] = std::sqrt(cluster_2->globalPosition().x() * cluster_2->globalPosition().x() + cluster_2->globalPosition().y() * cluster_2->globalPosition().y());
201  features["cluster_phi_2"] = std::atan2(cluster_2->globalPosition().y(), cluster_2->globalPosition().x());
202  features["cluster_eta_2"] = -1 * std::log(std::tan(0.5 * std::atan2(features["cluster_r_2"], features["cluster_z_2"])));
203  // the second cluster of the strip detector.
204  float charge_count_2 = 0;
205  int pixel_count_2 = 0;
206  float loc_eta_2 = 0, loc_phi_2 = 0; // clusterShape: [leta, lphi]
207  float glob_eta_2 = 0, glob_phi_2 = 0; // clusterShape: [geta, gphi]
208  float localDir0_2 = 0, localDir1_2 = 0, localDir2_2 = 0; // clusterShape: [lengthDir0, lengthDir1, lengthDir2]
209  float lengthDir0_2 = 0, lengthDir1_2 = 0, lengthDir2_2 = 0; // clusterShape: [lengthDir0, lengthDir1, lengthDir2]
210  float eta_angle_2 = 0, phi_angle_2 = 0;
211  auto status = getSCTClusterShapeInfo_fn(cluster_2, charge_count_2, pixel_count_2, loc_eta_2, loc_phi_2,
212  glob_eta_2, glob_phi_2,
213  localDir0_2, localDir1_2, localDir2_2,
214  lengthDir0_2, lengthDir1_2, lengthDir2_2,
215  eta_angle_2, phi_angle_2
216  );
217  if (status.isFailure()) {
218  ATH_MSG_ERROR("Failed at " << __LINE__ << " of getting SCT cluster shape info.");
219  }
220 
221  features["charge_count_2"] = charge_count_2;
222  features["count_2"] = pixel_count_2;
223  features["loc_eta_2"] = loc_eta_2;
224  features["loc_phi_2"] = loc_phi_2;
225  features["glob_eta_2"] = glob_eta_2;
226  features["glob_phi_2"] = glob_phi_2;
227  features["localDir0_2"] = localDir0_2;
228  features["localDir1_2"] = localDir1_2;
229  features["localDir2_2"] = localDir2_2;
230  features["lengthDir0_2"] = lengthDir0_2;
231  features["lengthDir1_2"] = lengthDir1_2;
232  features["lengthDir2_2"] = lengthDir2_2;
233  features["eta_angle_2"] = eta_angle_2;
234  features["phi_angle_2"] = phi_angle_2;
235  } else {
236  // copy the cluster 1 to cluster 2.
237  features["cluster_x_2"] = features["cluster_x_1"];
238  features["cluster_y_2"] = features["cluster_y_1"];
239  features["cluster_z_2"] = features["cluster_z_1"];
240  features["cluster_r_2"] = features["cluster_r_1"];
241  features["cluster_phi_2"] = features["cluster_phi_1"];
242  features["cluster_eta_2"] = features["cluster_eta_1"];
243  features["charge_count_2"] = features["charge_count_1"];
244  features["count_2"] = features["count_1"];
245  features["loc_eta_2"] = features["loc_eta_1"];
246  features["loc_phi_2"] = features["loc_phi_1"];
247  features["glob_eta_2"] = features["glob_eta_1"];
248  features["glob_phi_2"] = features["glob_phi_1"];
249  features["localDir0_2"] = features["localDir0_1"];
250  features["localDir1_2"] = features["localDir1_1"];
251  features["localDir2_2"] = features["localDir2_1"];
252  features["lengthDir0_2"] = features["lengthDir0_1"];
253  features["lengthDir1_2"] = features["lengthDir1_1"];
254  features["lengthDir2_2"] = features["lengthDir2_1"];
255  features["eta_angle_2"] = features["eta_angle_1"];
256  features["phi_angle_2"] = features["phi_angle_1"];
257  }
258  return features;
259 }
260 
261 
262 void InDet::SpacepointFeatureTool::cartesion_to_spherical(const Amg::Vector3D &xyzVec, float &eta_, float &phi_) const {
263  float r3 = 0;
264  for (int idx = 0; idx < 3; ++idx) {
265  r3 += xyzVec[idx] * xyzVec[idx];
266  }
267  r3 = std::sqrt(r3);
268  phi_ = std::atan2(xyzVec[1], xyzVec[0]);
269  float theta_ = std::acos(xyzVec[2] / r3);
270  eta_ = std::log(std::tan(0.5 * theta_)); // a bug here, but keep it so it is consistent with the DumpObject.
271 }
272 
273 StatusCode InDet::SpacepointFeatureTool::getSCTClusterShapeInfo_fn(const InDet::SiCluster *si_cluster,
274  float &charge_count, int &pixel_count, float &loc_eta, float &loc_phi,
275  float &glob_eta, float &glob_phi,
276  float &localDir0, float &localDir1, float &localDir2,
277  float &lengthDir0, float &lengthDir1, float &lengthDir2,
278  float &eta_angle, float &phi_angle
279  ) const
280 {
281  const InDet::SCT_Cluster* cluster = dynamic_cast<const InDet::SCT_Cluster*>(si_cluster);
282  const InDetDD::SiDetectorElement *element = cluster->detectorElement();
283  Amg::Vector2D locpos = cluster->localPosition();
284  std::pair<Amg::Vector3D, Amg::Vector3D> ends(
285  element->endsOfStrip(InDetDD::SiLocalPosition(locpos.y(), locpos.x(), 0)));
286  Amg::Vector3D JanDirection = ends.second - ends.first;
287  lengthDir0 = JanDirection[0];
288  lengthDir1 = JanDirection[1];
289  lengthDir2 = JanDirection[2];
290 
291  // get local directions.
292  // retrieve cluster shape
293  const InDetDD::SCT_ModuleSideDesign *design(
294  dynamic_cast<const InDetDD::SCT_ModuleSideDesign *>(&element->design()));
295  if (not design) {
296  ATH_MSG_ERROR("Failed at " << __LINE__ << " of accessing SCT ModuleSide Design");
297  return StatusCode::FAILURE;
298  }
299 
300  int min_strip = 999;
301  int max_strip = -999;
302 
303  charge_count = 0;
304  pixel_count = 0;
305 
306  for (unsigned int rdo = 0; rdo < cluster->rdoList().size(); rdo++) {
307  const auto &rdoID = cluster->rdoList().at(rdo);
308 
309  int strip = m_SCT_ID->strip(rdoID);
310 
311  if (min_strip > strip) min_strip = strip;
312  if (max_strip < strip) max_strip = strip;
313 
314  ++pixel_count;
315  }
316 
317  InDetDD::SiLocalPosition localPos_entry = design->localPositionOfCell(InDetDD::SiCellId(min_strip));
318  InDetDD::SiLocalPosition localPos_exit = design->localPositionOfCell(InDetDD::SiCellId(max_strip));
319 
320  Amg::Vector3D localStartPosition(localPos_entry.xEta() - 0.5 * element->etaPitch(),
321  localPos_entry.xPhi() - 0.5 * element->phiPitch(),
322  -0.5 * element->thickness());
323  Amg::Vector3D localEndPosition(localPos_exit.xEta() + 0.5 * element->etaPitch(),
324  localPos_exit.xPhi() + 0.5 * element->phiPitch(), 0.5 * element->thickness());
325 
326  Amg::Vector3D localDirection = localEndPosition - localStartPosition;
327  cartesion_to_spherical(localDirection, loc_eta, loc_phi);
328  localDir0 = localDirection[0];
329  localDir1 = localDirection[1];
330  localDir2 = localDirection[2];
331 
332  Amg::Vector3D globalStartPosition = element->globalPosition(localStartPosition);
333  Amg::Vector3D globalEndPosition = element->globalPosition(localEndPosition);
334 
335  Amg::Vector3D direction = globalEndPosition - globalStartPosition;
336  cartesion_to_spherical(direction, glob_eta, glob_phi);
337 
338  Amg::Vector3D my_phiax = element->phiAxis();
339  Amg::Vector3D my_etaax = element->etaAxis();
340  Amg::Vector3D my_normal = element->normal();
341 
342  float trkphicomp = direction.dot(my_phiax);
343  float trketacomp = direction.dot(my_etaax);
344  float trknormcomp = direction.dot(my_normal);
345  phi_angle = atan2(trknormcomp, trkphicomp);
346  eta_angle = atan2(trknormcomp, trketacomp);
347 
348  return StatusCode::SUCCESS;
349 }
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Definition: module_driven_slicing.py:166
merge.status
status
Definition: merge.py:17
InDetDD::SiDetectorElement::design
virtual const SiDetectorDesign & design() const override final
access to the local description (inline):
InDet::SpacepointFeatureTool::m_SCT_ID
const SCT_ID * m_SCT_ID
Definition: SpacepointFeatureTool.h:45
InDet::SiCluster
Definition: InnerDetector/InDetRecEvent/InDetPrepRawData/InDetPrepRawData/SiCluster.h:40
InDet::SpacepointFeatureTool::getSCTClusterShapeInfo_fn
StatusCode getSCTClusterShapeInfo_fn(const InDet::SiCluster *si_cluster, float &charge_count, int &pixel_count, float &loc_eta, float &loc_phi, float &glob_eta, float &glob_phi, float &localDir0, float &localDir1, float &localDir2, float &lengthDir0, float &lengthDir1, float &lengthDir2, float &eta_angle, float &phi_angle) const
Definition: SpacepointFeatureTool.cxx:273
InDet::SpacepointFeatureTool::SpacepointFeatureTool
SpacepointFeatureTool()=delete
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