G4CSGSolid.cc

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//
// Implementation of G4CSGSolid
//
// 27.03.98 J.Apostolakis - First version.
// --------------------------------------------------------------------
 
#include <cmath>
 
#include "G4CSGSolid.hh"
#include "G4QuickRand.hh"
#include "G4Polyhedron.hh"
 
#include "G4AutoLock.hh"
 
namespace
{
  G4Mutex polyhedronMutex = G4MUTEX_INITIALIZER;
}
 
//
// Constructor
//  - Base class constructor
 
G4CSGSolid::G4CSGSolid(const G4String& name) :
  G4VSolid(name)
{
}
 
//
// Fake default constructor - sets only member data and allocates memory
//                            for usage restricted to object persistency.
 
G4CSGSolid::G4CSGSolid( __void__& a )
  : G4VSolid(a)
{
}
 
//
// Destructor
//
 
G4CSGSolid::~G4CSGSolid()
{
  delete fpPolyhedron; fpPolyhedron = nullptr;
}
 
//
// Copy constructor
//
 
G4CSGSolid::G4CSGSolid(const G4CSGSolid& rhs)
  : G4VSolid(rhs), fCubicVolume(rhs.fCubicVolume),
    fSurfaceArea(rhs.fSurfaceArea)
{
}
 
//
// Assignment operator
 
G4CSGSolid& G4CSGSolid::operator = (const G4CSGSolid& rhs)
{
   // Check assignment to self
   //
   if (this == &rhs)  { return *this; }
 
   // Copy base class data
   //
   G4VSolid::operator=(rhs);
 
   // Copy data
   //
   fCubicVolume = rhs.fCubicVolume;
   fSurfaceArea = rhs.fSurfaceArea;
   fRebuildPolyhedron = false;
   delete fpPolyhedron; fpPolyhedron = nullptr;
 
   return *this;
}
 
G4double G4CSGSolid::GetRadiusInRing(G4double rmin, G4double rmax) const
{
  G4double k = G4QuickRand();
  return (rmin <= 0) ? rmax*std::sqrt(k)
                     : std::sqrt(k*rmax*rmax + (1. - k)*rmin*rmin);
}
 
std::ostream& G4CSGSolid::StreamInfo(std::ostream& os) const
{
  os << "-----------------------------------------------------------\n"
     << "    *** Dump for solid - " << GetName() << " ***\n"
     << "    ===================================================\n"
     << " Solid type: " << GetEntityType() << "\n"
     << " Parameters: \n"
     << "   NOT available !\n"
     << "-----------------------------------------------------------\n";
 
  return os;
}
 
G4Polyhedron* G4CSGSolid::GetPolyhedron () const
{
  if (fpPolyhedron == nullptr ||
      fRebuildPolyhedron ||
      fpPolyhedron->GetNumberOfRotationStepsAtTimeOfCreation() !=
      fpPolyhedron->GetNumberOfRotationSteps())
    {
      G4AutoLock l(&polyhedronMutex);
      delete fpPolyhedron;
      fpPolyhedron = CreatePolyhedron();
      fRebuildPolyhedron = false;
      l.unlock();
    }
  return fpPolyhedron;
}