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//
// $Id: G4Ray.icc,v 1.7 2006/06/29 18:40:24 gunter Exp $
// GEANT4 tag $Name: HEAD $
//
// --------------------------------------------------------------------
// GEANT 4 inline definitions file
//
// G4Ray.icc
//
// Implementation of inline methods of G4Ray
// --------------------------------------------------------------------

inline
G4Point3D G4Ray::GetPoint(G4double i) const
{
  return G4Point3D( start+i*dir );
}

inline
G4double G4Ray::GetPPoint(const G4Point3D& p) const
{
  // |dir|==1
  return (p-start)*dir;
}

inline
const G4Vector3D& G4Ray::GetDir() const
{
  return dir;
}

inline
const G4Point3D& G4Ray::GetStart() const
{
  return start;
}

inline
void G4Ray::SetDir(const G4Vector3D& dir0)
{
  dir= dir0.unit();
}

inline
void G4Ray::SetStart(const G4Point3D& start0)
{
  start= start0;
}

inline
void G4Ray::Init(const G4Point3D& start0, const G4Vector3D& dir0)
{
  start= start0;
  dir=   dir0;
  RayCheck();
  CreatePlanes();
}

inline
G4double G4Ray::P2(G4double x) const
{
  return(x*x);
}

inline
G4int G4Ray::NearZero(G4double val, G4double epsilon) const
{
  return ( ((val) > -epsilon) && ((val) < epsilon) );
}

inline
void G4Ray::Vsetall(G4Vector3D &a, G4double s) 
{
  a.setX(s); a.setY(s); a.setZ(s);
}