/****************************************************************************
* VCGLib                                                            o o     *
* Visual and Computer Graphics Library                            o     o   *
*                                                                _   O  _   *
* Copyright(C) 2004                                                \/)\/    *
* Visual Computing Lab                                            /\/|      *
* ISTI - Italian National Research Council                           |      *
*                                                                    \      *
* All rights reserved.                                                      *
*                                                                           *
* This program is free software; you can redistribute it and/or modify      *   
* it under the terms of the GNU General Public License as published by      *
* the Free Software Foundation; either version 2 of the License, or         *
* (at your option) any later version.                                       *
*                                                                           *
* This program is distributed in the hope that it will be useful,           *
* but WITHOUT ANY WARRANTY; without even the implied warranty of            *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
* for more details.                                                         *
*                                                                           *
****************************************************************************/
/****************************************************************************
  History

$Log: not supported by cvs2svn $
Revision 1.9  2004/09/30 00:48:07  ponchio
<gl/glew.h> -> <GL/glew.h>

Revision 1.8  2004/09/28 14:04:36  ganovelli
glGet added

Revision 1.7  2004/07/13 15:55:57  cignoni
Added test on presence of glTranspose extension (for old hw support)

Revision 1.6  2004/05/26 15:12:39  cignoni
Removed inclusion of gl extension stuff

Revision 1.5  2004/05/12 20:54:55  ponchio
*** empty log message ***

Revision 1.4  2004/05/12 13:07:47  ponchio
Added #include <glew.h>

Revision 1.3  2004/05/04 23:36:23  cignoni
remove include of gl and added glextgension exploiting,

Revision 1.2  2004/04/07 10:47:03  cignoni
inlined functions for avoid multiple linking errors

Revision 1.1  2004/03/31 15:27:17  ponchio
*** empty log message ***


****************************************************************************/

#ifndef VCG_GL_MATH_H
#define VCG_GL_MATH_H

// Please note that this file assume that you have already included your 
// gl-extension wrapping utility, and that therefore all the extension symbol are already defined.

#include <vcg/math/matrix44.h>
#include <vcg/math/similarity.h>
//#include <GL/glew.h> // please do not include it!


namespace vcg {

inline void glMultMatrix(const Matrix44f &matrix) {
  //glMultMatrixf((const GLfloat *)(matrix[0]));  
  if(glMultTransposeMatrixf) glMultTransposeMatrixf((const GLfloat *)(matrix[0])); 
  else  {
    Matrix44f tmp(matrix);
    Transpose(tmp);
    glMultMatrixf((const GLfloat *)(tmp[0]));
  }
}

inline void glMultMatrix(const Matrix44d &matrix) {
//  glMultMatrixd((const GLdouble *)(matrix[0]));
  if(glMultTransposeMatrixd) glMultTransposeMatrixd((const GLdouble *)(matrix[0])); 
  else  {
    Matrix44d tmp(matrix);
    Transpose(tmp);
    glMultMatrixd((const GLdouble *)(tmp[0]));
  }
}

inline void glMultMatrix(const Similarityf &s) {
  glTranslatef(s.tra[0], s.tra[1], s.tra[2]);
  glScalef(s.sca, s.sca, s.sca);
  float alpha;
  Point3f axis;
  s.rot.ToAxis(alpha, axis);    
  glRotatef(math::ToDeg(alpha), axis[0], axis[1], axis[2]);    
  
}

inline void glMultMatrix(const Similarityd &s) {
  glTranslated(s.tra[0], s.tra[1], s.tra[2]);
  double alpha;
  Point3d axis;
  s.rot.ToAxis(alpha, axis);
  glRotated(math::ToDeg(alpha), axis[0], axis[1], axis[2]);
  glScaled(s.sca, s.sca, s.sca);
}

inline void glGetv(const GLenum  pname, Matrix44f  & m){
	glGetFloatv(pname,&m[0][0]);
}

inline void glGetv(const GLenum  pname, Matrix44d  & m){
	glGetDoublev(pname,&m[0][0]);
}


}//namespace
#endif