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// Implementation of inline methods of G4ExtrudedSolid
// --------------------------------------------------------------------

inline 
G4int G4ExtrudedSolid::GetNofVertices() const
{
  return (G4int)fNv;
}

inline G4TwoVector G4ExtrudedSolid::GetVertex(G4int index) const
{
  if ( index<0 || index >= (G4int)fNv )
  {
    G4Exception ("G4ExtrudedSolid::GetVertex()", "GeomSolids0003",
                 FatalException, "Index outside range.");
    return {};
  }
  return fPolygon[index];
}  

inline 
std::vector<G4TwoVector> G4ExtrudedSolid::GetPolygon() const
{
  return fPolygon;
}  

inline 
G4int  G4ExtrudedSolid::GetNofZSections() const
{
  return (G4int)fNz;
}
  
inline 
G4ExtrudedSolid::ZSection  G4ExtrudedSolid::GetZSection(G4int index) const
{
  if ( index<0 || index >= (G4int)fNz )
  {
    G4Exception ("G4ExtrudedSolid::GetZSection()", "GeomSolids0003",
                 FatalException, "Index outside range.");
    return ZSection(0.0, G4TwoVector(), 0.0);
  }
  return fZSections[index];
}

inline 
std::vector<G4ExtrudedSolid::ZSection> G4ExtrudedSolid::GetZSections() const
{
  return fZSections;
}  

inline
G4bool G4ExtrudedSolid::PointInPolygon(const G4ThreeVector& p) const
{
  G4bool in = false;
  G4int icur = static_cast<G4int>(fPolygon[fNv-1].y() > p.y()), iprev = 0;
  for (std::size_t i = 0; i < fNv; ++i)
  {
    iprev = icur;
    if ((icur = static_cast<G4int>(fPolygon[i].y() > p.y())) != iprev)
    {
      in ^= static_cast<int>(p.y()*fLines[i].k + fLines[i].m < p.x());
    }
  }
  return in;
}

inline
G4double G4ExtrudedSolid::DistanceToPolygonSqr(const G4ThreeVector& p) const
{
  G4double dd = DBL_MAX;
  for (std::size_t i=0, k=fNv-1; i<fNv; k=i++)
  {
    G4double ix = p.x() - fPolygon[i].x();
    G4double iy = p.y() - fPolygon[i].y();
    G4double u  = fPlanes[i].a*iy - fPlanes[i].b*ix;
    if (u < 0)
    {
      G4double tmp = ix*ix + iy*iy;
      if (tmp < dd) { dd = tmp; }
    }
    else if (u > fLengths[i])
    {
      G4double kx = p.x() - fPolygon[k].x();
      G4double ky = p.y() - fPolygon[k].y();
      G4double tmp = kx*kx + ky*ky;
      if (tmp < dd) { dd = tmp; }
    }
    else
    {
      G4double tmp = fPlanes[i].a*p.x() + fPlanes[i].b*p.y() + fPlanes[i].d;
      tmp *= tmp;
      if (tmp < dd) { dd = tmp; }
    }
  }
  return dd;
}