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/******************************************************************************
*       SOFA, Simulation Open-Framework Architecture, version 1.0 beta 4      *
*                (c) 2006-2009 MGH, INRIA, USTL, UJF, CNRS                    *
*                                                                             *
* This library is free software; you can redistribute it and/or modify it     *
* under the terms of the GNU Lesser General Public License as published by    *
* the Free Software Foundation; either version 2.1 of the License, or (at     *
* your option) any later version.                                             *
*                                                                             *
* This library 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 Lesser General Public License *
* for more details.                                                           *
*                                                                             *
* You should have received a copy of the GNU Lesser General Public License    *
* along with this library; if not, write to the Free Software Foundation,     *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.          *
*******************************************************************************
*                              SOFA :: Framework                              *
*                                                                             *
* Authors: M. Adam, J. Allard, B. Andre, P-J. Bensoussan, S. Cotin, C. Duriez,*
* H. Delingette, F. Falipou, F. Faure, S. Fonteneau, L. Heigeas, C. Mendoza,  *
* M. Nesme, P. Neumann, J-P. de la Plata Alcade, F. Poyer and F. Roy          *
*                                                                             *
* Contact information: contact@sofa-framework.org                             *
******************************************************************************/
#ifndef SOFA_HELPER_GL_TEXT_H
#define SOFA_HELPER_GL_TEXT_H

#include <sofa/defaulttype/Vec.h>
#include <sofa/defaulttype/Mat.h>

#include <string>
#include <sstream>

#include <sofa/helper/system/gl.h>
#include <sofa/helper/system/glu.h>
#include <sofa/helper/system/glut.h>

#include <sofa/helper/helper.h>

namespace sofa
{

  namespace helper
  {

    namespace gl
    {

      using namespace sofa::defaulttype;
      using std::string;


      /**
       * This class, called GlText, allow to render text at a 3D position, facing the camera
      */

      class SOFA_HELPER_API GlText
      {
        public:
          /// Constructor
          GlText ();
          /// Constructor with specified text
          GlText ( const string& text );
          /// Constructor with specified text and position
          GlText ( const string& text, const Vector3& position );
          /// Constructor with specified text, position and scale
          GlText ( const string& text, const Vector3& position, const double& scale );
          /// Destructor
          ~GlText();

          /// Update the text to render
          void setText ( const string& text );
          /// Update the text to render
          template <typename T>
          void setText ( const T& text );
          /// Update the position used to render the text
          void update ( const Vector3& position );
          /// Update the scale used to render the text
          void update ( const double& scale );

          /// Render the text at the defined position and scale.
          void draw();

          /// Render the text at the current position with no scale
          template <typename T>
          static void draw ( const T& text );
          /// Render the text at the defined position with no scale
          template <typename T>
          static void draw ( const T& text, const Vector3& position );
          /// Render the text at the defined position and scale
          template <typename T>
          static void draw ( const T& text, const Vector3& position, const double& scale );

        private:
          double scale;
          string text;
          Vector3 position;
      };

    } // namespace gl

  } // namespace helper

} // namespace sofa

#endif