/* Copyright (C) 2007 Michael Goffioul
**
** 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 for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
*/

#ifndef __graphics_renderer_h__
#define __graphics_renderer_h__

#include <octave/oct.h>
#include <octave/graphics.h>

class
base_scaler
{
public:
  virtual Matrix scale (const Matrix& m) = 0;
};

class
scaler : public base_scaler
{
public:

  scaler (void)
    : rep (0) { }

  Matrix scale(const Matrix& m)
    { return (rep ? rep->scale (m) : m); }

  scaler& operator= (const radio_property& p);

private:

  base_scaler *rep;
};

class
graphics_renderer
{
public:

  void draw (double handle)
  {
    graphics_handle h = gh_manager::lookup (handle);
    if (h.ok ())
      draw (gh_manager::get_object (h));
  }
  void draw (const graphics_object& obj);

  virtual void draw (const figure::properties& props) = 0;
  virtual void draw (const axes::properties& props) = 0;

  virtual void set_viewport (int w, int h);
  int get_width () const { return width; }
  int get_height () const { return height; }
  Matrix get_boundingbox (const axes::properties& props) const;

protected:

  graphics_renderer (void) { }

protected:

  int width, height;
  scaler sx, sy, sz;

};

#endif /* __graphics_renderer_h__ */