// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.

#ifndef tools_sg_GL_plots_viewer
#define tools_sg_GL_plots_viewer

// used in geant4 plotting.

#include <tools/sg/plots_viewer>

#include <tools/sg/base_freetype>

#include "GL_manager"
#include "GL_action"

namespace tools {
namespace sg {

class GL_plots_viewer : public tools::sg::plots_viewer {
  TOOLS_HEADER(GL_plots_viewer,tools::sg::GL_plots_viewer,tools::sg::plots_viewer)
public:
  void render() {
    if(!m_ww) return;
    if(!m_wh) return;

    m_gl_mgr.begin_render(0,0,m_ww,m_wh,
                          m_clear_color.r(),
                          m_clear_color.g(),
                          m_clear_color.b(),
                          m_clear_color.a());

    GL_action action(m_gl_mgr,m_out,m_ww,m_wh);
    action.state().m_use_gsto = m_use_gsto;

    m_sg.render(action);
    if(!action.end()) { //check that matrices stack are ok.
      m_out << "exib::sg::GL_plots_viewer :"
            << " bad gl_action end."
            << std::endl;
    }

    //after_render();

    m_gl_mgr.end_render();
  }

public:
  GL_plots_viewer(std::ostream& a_out,const tools::sg::base_freetype& a_ttf,
                  unsigned int a_cols = 1,unsigned int a_rows = 1,
                  unsigned int a_width = 500,unsigned int a_height = 500)
  :parent(a_out,a_ttf,a_cols,a_rows,a_width,a_height)
  ,m_gl_mgr(a_out)
  {}
  virtual ~GL_plots_viewer(){
    //WARNING : nodes may refer m_gl_mgr (to handle gstos/texs), then we have to delete them first.
    m_sg.clear();
    m_plots.clear_sg();
  }
public:
  GL_plots_viewer(const GL_plots_viewer& a_from)
  :parent(a_from)
  ,m_gl_mgr(a_from.m_gl_mgr)
  {}
  GL_plots_viewer& operator=(const GL_plots_viewer& a_from){
    parent::operator=(a_from);
    m_gl_mgr = a_from.m_gl_mgr;
    return *this;
  }
protected:
  GL_manager m_gl_mgr;
};

}}

#endif