G4CSGSolid.cc

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//
// $Id: G4CSGSolid.cc 83572 2014-09-01 15:23:27Z gcosmo $
//
// --------------------------------------------------------------------

#include <cmath>

#include "G4CSGSolid.hh"
#include "Randomize.hh"
#include "G4Polyhedron.hh"

#include "G4AutoLock.hh"

namespace
{
  G4Mutex polyhedronMutex = G4MUTEX_INITIALIZER;
}

//
// Constructor
//  - Base class constructor 

G4CSGSolid::G4CSGSolid(const G4String& name) :
  G4VSolid(name), fCubicVolume(0.), fSurfaceArea(0.),
  fRebuildPolyhedron(false), fpPolyhedron(0)
{
}

//
// Fake default constructor - sets only member data and allocates memory
//                            for usage restricted to object persistency.

G4CSGSolid::G4CSGSolid( __void__& a )
  : G4VSolid(a), fCubicVolume(0.), fSurfaceArea(0.),
    fRebuildPolyhedron(false), fpPolyhedron(0)
{
}

//
// Destructor
//

G4CSGSolid::~G4CSGSolid() 
{
  delete fpPolyhedron; fpPolyhedron = 0;
}

//
// Copy constructor
//

G4CSGSolid::G4CSGSolid(const G4CSGSolid& rhs)
  : G4VSolid(rhs), fCubicVolume(rhs.fCubicVolume),
    fSurfaceArea(rhs.fSurfaceArea), fRebuildPolyhedron(false), fpPolyhedron(0)
{
}

//
// 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 = 0;

   return *this;
}  

G4double G4CSGSolid::GetRadiusInRing(G4double rmin, G4double rmax) const
{
  // Generate radius in annular ring according to uniform area
  //
  if (rmin<=0.)   { return rmax*std::sqrt(G4UniformRand()); }
  if (rmin!=rmax) { return std::sqrt(G4UniformRand()
                           * (sqr(rmax)-sqr(rmin))+sqr(rmin)); }
  return 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 ||
      fRebuildPolyhedron ||
      fpPolyhedron->GetNumberOfRotationStepsAtTimeOfCreation() !=
      fpPolyhedron->GetNumberOfRotationSteps())
    {
      G4AutoLock l(&polyhedronMutex);
      delete fpPolyhedron;
      fpPolyhedron = CreatePolyhedron();
      fRebuildPolyhedron = false;
      l.unlock();
    }
  return fpPolyhedron;
}