gltext.cc

/*===========================================================================*\
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/*===========================================================================*\
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 *   $Revision$                                                       *
 *   $Author$                                                      *
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\*===========================================================================*/


//=============================================================================


//== INCLUDES =================================================================

#include "gltext.hh"
#include <ACG/Math/GLMatrixT.hh>

//=============================================================================

namespace ACG {

//=============================================================================


void glText(const Vec3f&        _pos, 
            const std::string&  _text,
            void*               _font)
{
  glRasterPos3fv(_pos.data());
  
  std::string::const_iterator s_it(_text.begin()), s_end(_text.end());
  for (; s_it!=s_end; ++s_it)
    glutBitmapCharacter(_font, *s_it);
}


//-----------------------------------------------------------------------------


void glText( const Vec2i&        _pos,
             const std::string&  _text,
             void*               _font)
{
  GLint viewport[4];
  glGetIntegerv(GL_VIEWPORT, viewport);

  // set raster pos
  glMatrixMode(GL_PROJECTION);
  glPushMatrix();
  GLMatrixf orthoProj;
  orthoProj.identity();
  orthoProj.ortho(0.0f, float(viewport[2]), 0.0f, float(viewport[3]), -1.0f, 1.0f);
  glLoadMatrixf(orthoProj.data());


  glMatrixMode(GL_MODELVIEW);
  glPushMatrix();
  glLoadIdentity();
  glRasterPos2i(_pos[0], _pos[1]);
  

  // draw characters
  std::string::const_iterator s_it(_text.begin()), s_end(_text.end());
  for (; s_it!=s_end; ++s_it)
    glutBitmapCharacter(_font, *s_it);


  // restore matrices
  glMatrixMode(GL_PROJECTION);
  glPopMatrix();
  glMatrixMode(GL_MODELVIEW);
  glPopMatrix();
}


//=============================================================================
}  // namespace ACG
//=============================================================================