PlaneBuilderForGluedDet Class Reference

#include <PlaneBuilderForGluedDet.h>

Public Types
typedef ReferenceCountingPointer < Plane >	ResultType

Public Member Functions
ResultType	plane (const std::vector< const GeomDetUnit * > &dets) const

Private Member Functions
std::pair < RectangularPlaneBounds *, GlobalVector >	computeRectBounds (const std::vector< const GeomDetUnit * > &dets, const Plane &plane) const
Surface::RotationType	computeRotation (const std::vector< const GeomDetUnit * > &dets, const Surface::PositionType &meanPos) const

Detailed Description

Builds the minimal rectangular box that contains all input GeomDetUnits fully.

Definition at line 15 of file PlaneBuilderForGluedDet.h.

Member Typedef Documentation

typedef ReferenceCountingPointer<Plane> PlaneBuilderForGluedDet::ResultType

Warning, remember to assign this pointer to a ReferenceCountingPointer! Should be changed to return a ReferenceCountingPointer<BoundPlane>

Definition at line 19 of file PlaneBuilderForGluedDet.h.

Member Function Documentation

std::pair< RectangularPlaneBounds *, GlobalVector > PlaneBuilderForGluedDet::computeRectBounds ( const std::vector< const GeomDetUnit * > &  dets, const Plane &  plane  ) const

private

Definition at line 31 of file PlaneBuilderForGluedDet.cc.

References BoundingBox::corners(), mps_fire::i, hltrates_dqm_sourceclient-live_cfg::offset, AlCaHLTBitMon_ParallelJobs::p, mps_fire::result, Surface::toGlobal(), GloballyPositioned< T >::toLocal(), PV3DBase< T, PVType, FrameType >::x(), hlt_dqm_clientPB-live_cfg::xmax, hlt_dqm_clientPB-live_cfg::xmin, PV3DBase< T, PVType, FrameType >::y(), SiStrip_OfflineMonitoring_cff::ymax, SiStrip_OfflineMonitoring_cff::ymin, and PV3DBase< T, PVType, FrameType >::z().

Referenced by plane().

                                                                         {
  // go over all corners and compute maximum deviations from mean pos.
  std::vector<GlobalPoint> corners;
  for (auto det : dets) {
    const Plane& bplane = dynamic_cast<const Plane&>(det->surface());
    std::vector<GlobalPoint> dc = BoundingBox().corners(bplane);
    corners.insert(corners.end(), dc.begin(), dc.end());
  }

  float xmin(0), xmax(0), ymin(0), ymax(0), zmin(0), zmax(0);
  for (std::vector<GlobalPoint>::const_iterator i = corners.begin(), cend = corners.end(); i != cend; ++i) {
    LocalPoint p = plane.toLocal(*i);
    if (p.x() < xmin)
      xmin = p.x();
    if (p.x() > xmax)
      xmax = p.x();
    if (p.y() < ymin)
      ymin = p.y();
    if (p.y() > ymax)
      ymax = p.y();
    if (p.z() < zmin)
      zmin = p.z();
    if (p.z() > zmax)
      zmax = p.z();
  }

  LocalVector localOffset((xmin + xmax) / 2., (ymin + ymax) / 2., (zmin + zmax) / 2.);
  GlobalVector offset(plane.toGlobal(localOffset));

  std::pair<RectangularPlaneBounds*, GlobalVector> result(
      new RectangularPlaneBounds((xmax - xmin) / 2, (ymax - ymin) / 2, (zmax - zmin) / 2), offset);

  return result;
}

Surface::RotationType PlaneBuilderForGluedDet::computeRotation ( const std::vector< const GeomDetUnit * > &  dets, const Surface::PositionType &  meanPos  ) const

private

Definition at line 67 of file PlaneBuilderForGluedDet.cc.

References Vector3DBase< T, FrameTag >::cross(), dqmiodumpmetadata::n, plane(), PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

                                                                                                         {
  // choose first mono out-pointing rotation
  // the rotations of GluedDets coincide with the mono part
  // Simply take the x,y of the first Det if z points out,
  // or -x, y if it doesn't
  const BoundPlane& plane = dynamic_cast<const BoundPlane&>(dets.front()->surface());
  //GlobalVector n = plane.normalVector();

  GlobalVector xAxis;
  GlobalVector yAxis;
  GlobalVector planeYAxis = plane.toGlobal(LocalVector(0, 1, 0));
  if (planeYAxis.z() < 0)
    yAxis = -planeYAxis;
  else
    yAxis = planeYAxis;

  GlobalVector planeXAxis = plane.toGlobal(LocalVector(1, 0, 0));
  GlobalVector n = planeXAxis.cross(planeYAxis);

  if (n.x() * meanPos.x() + n.y() * meanPos.y() > 0) {
    xAxis = planeXAxis;
  } else {
    xAxis = -planeXAxis;
  }

  return Surface::RotationType(xAxis, yAxis);
}

PlaneBuilderForGluedDet::ResultType PlaneBuilderForGluedDet::plane

(

const std::vector< const GeomDetUnit * > &

dets

)

const

Definition at line 10 of file PlaneBuilderForGluedDet.cc.

References computeRectBounds(), MediumProperties::radLen(), idealTransformation::rotation, and MediumProperties::xi().

Referenced by TrackerGeomBuilderFromGeometricDet::buildGeomDet(), and computeRotation().

                                                                                                                {
  // find mean position
  typedef Surface::PositionType::BasicVectorType Vector;
  Vector posSum(0, 0, 0);
  for (auto det : dets) {
    posSum += (*det).surface().position().basicVector();
  }
  Surface::PositionType meanPos(posSum / float(dets.size()));

  Surface::RotationType rotation = dets.front()->surface().rotation();
  //  Surface::RotationType rotation = computeRotation( dets, meanPos);
  Plane tmpPlane = Plane(meanPos, rotation);

  // Take the medium properties from the first DetUnit
  const MediumProperties& mp = dets.front()->surface().mediumProperties();
  MediumProperties newmp(mp.radLen() * 2.0, mp.xi() * 2.0);

  std::pair<RectangularPlaneBounds*, GlobalVector> bo = computeRectBounds(dets, tmpPlane);
  return new Plane(meanPos + bo.second, rotation, newmp, bo.first);
}