// Copyright (c) 1995-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

// JCV 30/08/90 Modif passage version C++ 2.0 sur Sun

inline gp_Lin::gp_Lin ()
{ }

inline gp_Lin::gp_Lin (const gp_Ax1& A1) : pos (A1)
{ }

inline gp_Lin::gp_Lin (const gp_Pnt& P,
		       const gp_Dir& V) : pos (P, V)
{ }

inline void gp_Lin::Reverse()
{ pos.Reverse(); }

inline gp_Lin gp_Lin::Reversed() const { 
  gp_Lin L = *this;
  L.pos.Reverse();
  return L;
}

inline void gp_Lin::SetDirection (const gp_Dir& V)
{ pos.SetDirection(V); }

inline void gp_Lin::SetLocation (const gp_Pnt& P)
{ pos.SetLocation(P); }

inline void gp_Lin::SetPosition (const gp_Ax1& A1)
{ pos = A1; }

inline const gp_Dir& gp_Lin::Direction() const
{ return pos.Direction(); }

inline const gp_Pnt& gp_Lin::Location()  const
{ return pos.Location(); }

inline    const gp_Ax1& gp_Lin::Position() const
{ return pos; }

inline Standard_Real gp_Lin::Angle (const gp_Lin& Other) const
{ return pos.Direction().Angle (Other.pos.Direction()); }

inline Standard_Boolean gp_Lin::Contains
(const gp_Pnt& P,
 const Standard_Real LinearTolerance) const
{ return Distance(P) <= LinearTolerance; }

inline Standard_Real gp_Lin::Distance (const gp_Pnt& P) const {
  gp_XYZ Coord = P.XYZ();
  Coord.Subtract ((pos.Location()).XYZ());
  Coord.Cross ((pos.Direction()).XYZ());
  return Coord.Modulus();
}

inline Standard_Real gp_Lin::SquareDistance (const gp_Pnt& P) const
{
  const gp_Pnt& Loc = pos.Location();
  gp_Vec V (P.X() - Loc.X(),
	    P.Y() - Loc.Y(),
	    P.Z() - Loc.Z());
  V.Cross (pos.Direction());
  return V.SquareMagnitude ();                                          
}

inline Standard_Real gp_Lin::SquareDistance (const gp_Lin& Other) const
{
  Standard_Real D = Distance (Other);
  return D * D;
}

inline gp_Lin gp_Lin::Normal (const gp_Pnt& P) const
{
  const gp_Pnt& Loc = pos.Location();
  gp_Dir V (P.X() - Loc.X(),
	    P.Y() - Loc.Y(),
	    P.Z() - Loc.Z());
  V = pos.Direction().CrossCrossed(V, pos.Direction());
  return gp_Lin (P, V);
}

inline void gp_Lin::Rotate (const gp_Ax1& A1,
			    const Standard_Real Ang)
{ pos.Rotate(A1, Ang); }

inline gp_Lin gp_Lin::Rotated (const gp_Ax1& A1,
			       const Standard_Real Ang) const
{
  gp_Lin L = *this;
  L.pos.Rotate (A1, Ang);
  return L;
}

inline void gp_Lin::Scale (const gp_Pnt& P,
			   const Standard_Real S)
{ pos.Scale(P, S); }

inline gp_Lin gp_Lin::Scaled (const gp_Pnt& P,
			      const Standard_Real S) const
{
  gp_Lin L = *this;
  L.pos.Scale (P, S);
  return L;
}

inline void gp_Lin::Transform (const gp_Trsf& T)
{ pos.Transform(T); }

inline gp_Lin gp_Lin::Transformed (const gp_Trsf& T) const
{
  gp_Lin L = *this;
  L.pos.Transform (T);
  return L;
}

inline void gp_Lin::Translate (const gp_Vec& V)
{ pos.Translate(V); }

inline gp_Lin gp_Lin::Translated (const gp_Vec& V) const
{
  gp_Lin L = *this;
  L.pos.Translate (V); 
  return L;
}

inline void gp_Lin::Translate (const gp_Pnt& P1,
			       const gp_Pnt& P2)
{pos.Translate (P1, P2);}

inline gp_Lin gp_Lin::Translated (const gp_Pnt& P1,
				  const gp_Pnt& P2) const
{
  gp_Lin L = *this;
  L.pos.Translate (gp_Vec(P1, P2));
  return L;
}