// Created on: 2011-09-20
// Created by: Sergey ZERCHANINOV
// Copyright (c) 2011-2014 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.

#ifndef OpenGl_Matrix_Header
#define OpenGl_Matrix_Header

#include <InterfaceGraphic_telem.hxx>

struct OpenGl_Matrix
{
  float mat[4][4];
  DEFINE_STANDARD_ALLOC
};

Standard_EXPORT void OpenGl_Multiplymat3 (OpenGl_Matrix *c, const OpenGl_Matrix *a, const OpenGl_Matrix *b);
Standard_EXPORT void OpenGl_Transposemat3 (OpenGl_Matrix *c, const OpenGl_Matrix *a);

static const OpenGl_Matrix OpenGl_IdentityMatrix =
{
  // mat[4][4]
  { { 1.0f, 0.0f, 0.0f, 0.0f },
    { 0.0f, 1.0f, 0.0f, 0.0f },
    { 0.0f, 0.0f, 1.0f, 0.0f },
    { 0.0f, 0.0f, 0.0f, 1.0f } }
};

#endif //OpenGl_Matrix_Header
