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// $Id: G4OpenGLTransform3D.cc,v 1.8 2006/06/29 21:19:32 gunter Exp $
// GEANT4 tag $Name:  $
//
// 
// Andrew Walkden  24th October 1996
// G4OpenGLTransform3D provides OpenGL style transformation matrix
// from G4Transform3D.

#ifdef G4VIS_BUILD_OPENGL_DRIVER

#include "G4OpenGLTransform3D.hh"

G4OpenGLTransform3D::G4OpenGLTransform3D (const G4Transform3D &t):
  G4Transform3D (t) {}

const GLdouble* G4OpenGLTransform3D::GetGLMatrix () 
{
  GLdouble *p = m;
  for (size_t i=0; i<4; i++)
  { 
    for (size_t k=0; k<3; k++)
    {
      *p++ = operator()(k,i);
    }
    *p++ = 0.; 
  } 
  m[15] = 1.; 
  return m;
}

#endif
