G4Example02Subsystem.cc

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#include "G4Example02Subsystem.h"

#include "G4Example02Detector.h"
#include "G4Example02SteppingAction.h"

#include <phparameter/PHParameters.h>

#include <g4main/PHG4HitContainer.h>
#include <g4main/PHG4SteppingAction.h>  // for PHG4SteppingAction

#include <phool/PHCompositeNode.h>
#include <phool/PHIODataNode.h>    // for PHIODataNode
#include <phool/PHNode.h>          // for PHNode
#include <phool/PHNodeIterator.h>  // for PHNodeIterator
#include <phool/PHObject.h>        // for PHObject
#include <phool/getClass.h>

using namespace std;

//_______________________________________________________________________
G4Example02Subsystem::G4Example02Subsystem(const std::string &name)
  : PHG4DetectorSubsystem(name)
  , m_Detector(nullptr)
  , m_SteppingAction(nullptr)
{
  // call base class method which will set up parameter infrastructure
  // and call our SetDefaultParameters() method
  InitializeParameters();
}

//_______________________________________________________________________
int G4Example02Subsystem::InitRunSubsystem(PHCompositeNode *topNode)
{
  PHNodeIterator iter(topNode);
  PHCompositeNode *dstNode =
      dynamic_cast<PHCompositeNode *>(iter.findFirst("PHCompositeNode", "DST"));
  PHNodeIterator dstIter(dstNode);
  if (GetParams()->get_int_param("active"))
  {
    PHCompositeNode *DetNode = dynamic_cast<PHCompositeNode *>(dstIter.findFirst("PHCompositeNode", Name()));
    if (!DetNode)
    {
      DetNode = new PHCompositeNode(Name());
      dstNode->addNode(DetNode);
    }
    string g4hitnodename = "G4HIT_" + Name();
    PHG4HitContainer *g4_hits = findNode::getClass<PHG4HitContainer>(DetNode, g4hitnodename);
    if (!g4_hits)
    {
      g4_hits = new PHG4HitContainer(g4hitnodename);
      DetNode->addNode(new PHIODataNode<PHObject>(g4_hits, g4hitnodename, "PHObject"));
    }
  }
  // create detector
  m_Detector = new G4Example02Detector(this, topNode, GetParams(), Name());
  m_Detector->OverlapCheck(CheckOverlap());
  // create stepping action if detector is active
  if (GetParams()->get_int_param("active"))
  {
    m_SteppingAction = new G4Example02SteppingAction(m_Detector, GetParams());
  }
  return 0;
}

//_______________________________________________________________________
int G4Example02Subsystem::process_event(PHCompositeNode *topNode)
{
  // pass top node to stepping action so that it gets
  // relevant nodes needed internally
  if (m_SteppingAction)
  {
    m_SteppingAction->SetInterfacePointers(topNode);
  }
  return 0;
}

void G4Example02Subsystem::Print(const string &what) const
{
  if (m_Detector)
  {
    m_Detector->Print(what);
  }
  return;
}

//_______________________________________________________________________
PHG4Detector *G4Example02Subsystem::GetDetector(void) const
{
  return m_Detector;
}

void G4Example02Subsystem::SetDefaultParameters()
{
  // sizes are in cm
  // angles are in deg
  // units will be converted to G4 units when used
  set_default_double_param("place_x", 0.);
  set_default_double_param("place_y", 0.);
  set_default_double_param("place_z", 0.);
  set_default_double_param("rot_x", 0.);
  set_default_double_param("rot_y", 0.);
  set_default_double_param("rot_z", 0.);
  set_default_double_param("size_x", 20.);
  set_default_double_param("size_y", 20.);
  set_default_double_param("size_z", 20.);

  set_default_string_param("material", "G4_Galactic");
}