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// 
//---------------------------------------------------------------
//      GEANT 4 class inline source file
//
//  G4Physics2DVector.icc

//---------------------------------------------------------------

inline
 G4double G4Physics2DVector::Value(G4double x, G4double y) const
{
  size_t idx = 0;
  size_t idy = 0;
  return Value(x, y, idx, idy);
}

inline void G4Physics2DVector::PutX(size_t idx, G4double val)
{
  xVector[idx] = val;
}

inline void G4Physics2DVector::PutY(size_t idy, G4double val)
{
  yVector[idy] = val;
}

inline void 
 G4Physics2DVector::PutValue(size_t idx, size_t idy, G4double val)
{
  (*(value[idy]))[idx] = val;
}

inline G4double G4Physics2DVector::GetX(size_t index) const
{
  return xVector[index];
}

inline G4double G4Physics2DVector::GetY(size_t index) const
{
  return yVector[index];
}

inline
 G4double G4Physics2DVector::GetValue(size_t idx, size_t idy) const
{
  return (*(value[idy]))[idx];
}

inline 
 G4double G4Physics2DVector::FindLinearX(G4double rand, G4double y) const
{
  size_t idy = 0;
  return FindLinearX(rand, y, idy);
}

inline size_t G4Physics2DVector::GetLengthX() const
{
  return numberOfXNodes;
}

inline size_t G4Physics2DVector::GetLengthY() const
{
  return numberOfYNodes;
}

inline G4PhysicsVectorType G4Physics2DVector::GetType() const
{
  return type;
}

inline void G4Physics2DVector::SetBicubicInterpolation(G4bool val)
{
  useBicubic = val;
}

inline size_t G4Physics2DVector::FindBin(G4double z, 
                                         const G4PV2DDataVector& v, 
                                         size_t idx,
                                         size_t idxmax) const
{
  size_t id = idx;
  if(z < v[1]) { 
    id = 0; 
  } else if(z >= v[idxmax-2]) { 
    id = idxmax - 2; 
  } else if(idx > idxmax-2 || z < v[idx] || z >= v[idx+1]) { 
    id = FindBinLocation(z, v); 
  }
  return id;
}

inline size_t 
G4Physics2DVector::FindBinLocationX(G4double x, size_t lastidx) const
{
  return FindBin(x, xVector, lastidx, numberOfXNodes);
}

inline size_t 
G4Physics2DVector::FindBinLocationY(G4double y, size_t lastidy) const
{
  return FindBin(y, yVector, lastidy, numberOfYNodes);
}

inline void G4Physics2DVector::SetVerboseLevel(G4int val)
{
   verboseLevel = val;
}

inline G4double 
G4Physics2DVector::DerivativeX(size_t idx, size_t idy, G4double fac) const
{
  size_t i1 = idx;
  if(i1 > 0) { --i1; }
  size_t i2 = idx;
  if(i2+1 < numberOfXNodes) { ++i2; }
  return fac*(GetValue(i2, idy) - GetValue(i1, idy))/(GetX(i2) - GetX(i1));
}

inline G4double 
G4Physics2DVector::DerivativeY(size_t idx, size_t idy, G4double fac) const
{
  size_t i1 = idy;
  if(i1 > 0) { --i1; }
  size_t i2 = idy;
  if(i2+1 < numberOfYNodes) { ++i2; }
  return fac*(GetValue(idx, i2) - GetValue(idx, i1))/(GetY(i2) - GetY(i1));
}

inline G4double 
G4Physics2DVector::DerivativeXY(size_t idx, size_t idy, G4double fac) const
{
  size_t i1 = idx;
  if(i1 > 0) { --i1; }
  size_t i2 = idx;
  if(i2+1 < numberOfXNodes) { ++i2; }
  size_t j1 = idy;
  if(j1 > 0) { --j1; }
  size_t j2 = idy;
  if(j2+1 < numberOfYNodes) { ++j2; }
  return fac*(GetValue(i2, j2) - GetValue(i1, j2) - GetValue(i2, j1) 
	+ GetValue(i1, j1))/((GetX(i2) - GetX(i1))*(GetY(j2) - GetY(j1)));
}