// 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.

// Modif JCV 08/01/91 modifs suite a la deuxieme revue de projet
// et introduction des classes XY, Mat2d.
// Modif DPF 23/06/93 Ajout fonction Coord pour genericite 2d 3d

#include <gp_Vec2d.hxx>
#include <gp_Ax2d.hxx>
#include <gp_Trsf2d.hxx>

inline gp_Pnt2d::gp_Pnt2d (const gp_XY& Coordinates) : coord (Coordinates)
{ }

inline gp_Pnt2d::gp_Pnt2d (const Standard_Real Xp,
			   const Standard_Real Yp) : coord (Xp, Yp)
{ }

inline gp_Pnt2d::gp_Pnt2d() { }

inline Standard_Real gp_Pnt2d::Coord(const Standard_Integer Index) const { return coord.Coord(Index); }

inline void gp_Pnt2d::SetX  (const Standard_Real X)
{   coord.SetX (X); }

inline void gp_Pnt2d::SetY  (const Standard_Real Y)
{   coord.SetY (Y); }

inline void gp_Pnt2d::SetXY (const gp_XY& Coordinates)
{   coord = Coordinates; }

inline void gp_Pnt2d::SetCoord (const Standard_Real Xp,
				const Standard_Real Yp)
{  coord.SetCoord (Xp, Yp);}

inline void gp_Pnt2d::SetCoord (const Standard_Integer Index,
				const Standard_Real Xi)
{ coord.SetCoord (Index, Xi); }

inline void gp_Pnt2d::Coord (Standard_Real& Xp,
			     Standard_Real& Yp) const
{ coord.Coord (Xp, Yp); }

inline Standard_Real gp_Pnt2d::X() const
{ return coord.X(); }

inline Standard_Real gp_Pnt2d::Y() const
{ return coord.Y(); }

inline const gp_XY& gp_Pnt2d::XY () const
{ return coord; }

inline const gp_XY& gp_Pnt2d::Coord () const
{ return coord; }

inline  gp_XY& gp_Pnt2d::ChangeCoord ()
{ return coord; }

inline Standard_Boolean gp_Pnt2d::IsEqual
(const gp_Pnt2d& Other,
 const Standard_Real LinearTolerance) const
{ return Distance (Other) <= LinearTolerance; }

inline Standard_Real gp_Pnt2d::Distance (const gp_Pnt2d& Other) const
{
  const gp_XY& XY = Other.coord;
  Standard_Real X = coord.X() - XY.X();
  Standard_Real Y = coord.Y() - XY.Y();
  return sqrt (X * X + Y * Y);
}

inline Standard_Real gp_Pnt2d::SquareDistance (const gp_Pnt2d& Other) const
{
  const gp_XY& XY = Other.coord;
  Standard_Real X = coord.X() - XY.X();
  Standard_Real Y = coord.Y() - XY.Y();
  return (X * X + Y * Y);
}

inline void gp_Pnt2d::Rotate (const gp_Pnt2d& P,
			      const Standard_Real Ang)
{       
  gp_Trsf2d T;
  T.SetRotation (P, Ang);
  T.Transforms  (coord);
}

inline gp_Pnt2d gp_Pnt2d::Rotated (const gp_Pnt2d& P,
				   const Standard_Real Ang) const
{
  gp_Pnt2d Pres = *this;
  Pres.Rotate (P, Ang);
  return Pres;
}

inline void gp_Pnt2d::Scale (const gp_Pnt2d& P,
			     const Standard_Real S)
{
  gp_XY XY = P.coord;
  XY.Multiply (1.0 - S);
  coord.Multiply (S);
  coord.Add      (XY);
}

inline gp_Pnt2d gp_Pnt2d::Scaled (const gp_Pnt2d& P,
				  const Standard_Real S)  const
{
  gp_Pnt2d Pres = *this;
  Pres.Scale (P, S);
  return Pres;
}

inline gp_Pnt2d gp_Pnt2d::Transformed (const gp_Trsf2d& T) const
{
  gp_Pnt2d Pres = *this;
  Pres.Transform (T);
  return Pres;
}

inline void gp_Pnt2d::Translate (const gp_Vec2d& V)
{ coord.Add (V.XY()); }

inline gp_Pnt2d gp_Pnt2d::Translated (const gp_Vec2d& V) const
{
  gp_Pnt2d P = *this;
  P.coord.Add (V.XY ());
  return P;
}

inline void gp_Pnt2d::Translate (const gp_Pnt2d& P1,
				 const gp_Pnt2d& P2)
{
  coord.Add      (P2.coord);
  coord.Subtract (P1.coord);
}               

inline gp_Pnt2d gp_Pnt2d::Translated (const gp_Pnt2d& P1,
				      const gp_Pnt2d& P2) const
{
  gp_Pnt2d P = *this;
  P.Translate (P1, P2);
  return P;
}