// 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.

#include <gp_Trsf2d.hxx>
#include <Standard_OutOfRange.hxx>

inline gp_GTrsf2d::gp_GTrsf2d ()
{
  shape = gp_Identity;
  matrix.SetScale (1.0);
  loc.SetCoord (0.0, 0.0);
  scale = 1.0;
}

inline gp_GTrsf2d::gp_GTrsf2d (const gp_Trsf2d& T)
{
  shape = T.shape;
  matrix = T.matrix;
  loc = T.loc;
  scale = T.scale;
}

inline gp_GTrsf2d::gp_GTrsf2d (const gp_Mat2d& M,
			       const gp_XY& V) :
			       matrix(M),
			       loc(V)
{ shape = gp_Other;  scale = 0.0; }

inline void gp_GTrsf2d::SetValue (const Standard_Integer Row,
				  const Standard_Integer Col,
				  const Standard_Real Value)
{
  Standard_OutOfRange_Raise_if
    (Row < 1 || Row > 2 || Col < 1 || Col > 3, " ");
  if (Col == 3) loc.SetCoord (Row, Value);
  else matrix.SetValue (Row, Col, Value);
  shape = gp_Other;
}

inline void gp_GTrsf2d::SetTrsf2d (const gp_Trsf2d& T)
{
  shape = T.shape;
  matrix = T.matrix;
  loc = T.loc;
  scale = T.scale;
}

inline void gp_GTrsf2d::SetVectorialPart (const gp_Mat2d& Matrix)
{ matrix = Matrix;   shape = gp_Other;  scale = 0.0; }

inline Standard_Boolean gp_GTrsf2d::IsNegative () const
{ return matrix.Determinant() < 0.0; }

inline Standard_Boolean gp_GTrsf2d::IsSingular () const
{ return matrix.IsSingular(); }

inline const gp_Mat2d& gp_GTrsf2d::VectorialPart () const
{ return matrix; }

inline Standard_Real gp_GTrsf2d::Value (const Standard_Integer Row,
					const Standard_Integer Col) const
{
  Standard_OutOfRange_Raise_if
    (Row < 1 || Row > 2 || Col < 1 || Col > 3, " ");
  if (Col == 3) return loc.Coord (Row); 
  if (shape == gp_Other) return matrix.Value (Row, Col);
  return scale * matrix.Value (Row, Col);
}

inline gp_TrsfForm gp_GTrsf2d::Form () const
{ return shape; }

inline const gp_XY& gp_GTrsf2d::TranslationPart () const
{ return loc; }

inline gp_GTrsf2d gp_GTrsf2d::Inverted () const
{
  gp_GTrsf2d T = *this;
  T.Invert ();
  return T;
}

inline gp_GTrsf2d gp_GTrsf2d::Multiplied (const gp_GTrsf2d& T) const
{
  gp_GTrsf2d Tres = *this;
  Tres.Multiply (T);
  return Tres;
}

inline gp_GTrsf2d gp_GTrsf2d::Powered (const Standard_Integer N) const
{
  gp_GTrsf2d T = *this;
  T.Power (N);
  return T;
}

inline void gp_GTrsf2d::Transforms (gp_XY& Coord) const
{
  Coord.Multiply (matrix);
  if (!(shape == gp_Other) && !(scale == 1.0)) Coord.Multiply (scale);
  Coord.Add(loc);
}

inline gp_XY gp_GTrsf2d::Transformed(const gp_XY& Coord) const 
{
  gp_XY newCoord = Coord;
  Transforms(newCoord);
  return newCoord;
}

inline void gp_GTrsf2d::Transforms (Standard_Real& X,
				    Standard_Real& Y) const
{
  gp_XY Doublet (X, Y);
  Doublet.Multiply (matrix);
  if (!(shape == gp_Other) && !(scale == 1.0)) Doublet.Multiply (scale);
  Doublet.Add(loc);
  Doublet.Coord (X, Y);
}