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//
// Implementation for G4UBox wrapper class
//
// 13.09.13 G.Cosmo, CERN/PH
// --------------------------------------------------------------------

#include "G4Box.hh"
#include "G4UBox.hh"

#if ( defined(G4GEOM_USE_USOLIDS) || defined(G4GEOM_USE_PARTIAL_USOLIDS) )

#include "G4AffineTransform.hh"
#include "G4VPVParameterisation.hh"
#include "G4BoundingEnvelope.hh"

using namespace CLHEP;

////////////////////////////////////////////////////////////////////////
//
// Constructor - check & set half widths


G4UBox::G4UBox(const G4String& pName,
                     G4double pX,
                     G4double pY,
                     G4double pZ)
  : Base_t(pName, pX, pY, pZ)
{
}

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

G4UBox::G4UBox( __void__& a )
  : Base_t(a)
{
}

//////////////////////////////////////////////////////////////////////////
//
// Destructor

G4UBox::~G4UBox()
{
}

//////////////////////////////////////////////////////////////////////////
//
// Copy constructor

G4UBox::G4UBox(const G4UBox& rhs)
  : Base_t(rhs)
{
}

//////////////////////////////////////////////////////////////////////////
//
// Assignment operator

G4UBox& G4UBox::operator = (const G4UBox& rhs) 
{
   // Check assignment to self
   //
   if (this == &rhs)  { return *this; }

   // Copy base class data
   //
   Base_t::operator=(rhs);

   return *this;
}

////////////////////////////////////////////////////////////////////////
//
// Accessors & modifiers

G4double G4UBox::GetXHalfLength() const
{
  return x();
}
G4double G4UBox::GetYHalfLength() const
{
  return y();
}
G4double G4UBox::GetZHalfLength() const
{
  return z();
}

void G4UBox::SetXHalfLength(G4double dx)
{
  SetX(dx);
  fRebuildPolyhedron = true;
}
void G4UBox::SetYHalfLength(G4double dy)
{
  SetY(dy);
  fRebuildPolyhedron = true;
}
void G4UBox::SetZHalfLength(G4double dz)
{
  SetZ(dz);
  fRebuildPolyhedron = true;
}

////////////////////////////////////////////////////////////////////////
//
// Dispatch to parameterisation for replication mechanism dimension
// computation & modification.

void G4UBox::ComputeDimensions(G4VPVParameterisation* p,
                               const G4int n,
                               const G4VPhysicalVolume* pRep)
{
  p->ComputeDimensions(*(G4Box*)this,n,pRep);
}

//////////////////////////////////////////////////////////////////////////
//
// Make a clone of the object

G4VSolid* G4UBox::Clone() const
{
  return new G4UBox(*this);
}

//////////////////////////////////////////////////////////////////////////
//
// Get bounding box

void G4UBox::BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const
{
  G4double dx = GetXHalfLength();
  G4double dy = GetYHalfLength();
  G4double dz = GetZHalfLength();
  pMin.set(-dx,-dy,-dz);
  pMax.set( dx, dy, dz);

  // Check correctness of the bounding box
  //
  if (pMin.x() >= pMax.x() || pMin.y() >= pMax.y() || pMin.z() >= pMax.z())
  {
    std::ostringstream message;
    message << "Bad bounding box (min >= max) for solid: "
            << GetName() << " !"
            << "\npMin = " << pMin
            << "\npMax = " << pMax;
    G4Exception("G4UBox::BoundingLimits()", "GeomMgt0001",
                JustWarning, message);
    StreamInfo(G4cout);
  }
}

//////////////////////////////////////////////////////////////////////////
//
// Calculate extent under transform and specified limit

G4bool
G4UBox::CalculateExtent(const EAxis pAxis,
                        const G4VoxelLimits& pVoxelLimit,
                        const G4AffineTransform& pTransform,
                              G4double& pMin, G4double& pMax) const
{
  G4ThreeVector bmin, bmax;

  // Get bounding box limits
  BoundingLimits(bmin,bmax);

  // Find extent
  G4BoundingEnvelope bbox(bmin,bmax);
  return bbox.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
}


//////////////////////////////////////////////////////////////////////////
//
// Create polyhedron for visualization

G4Polyhedron* G4UBox::CreatePolyhedron() const
{
  return new G4PolyhedronBox(GetXHalfLength(),
                             GetYHalfLength(),
                             GetZHalfLength());
}

#endif  // G4GEOM_USE_USOLIDS