Vamos Automotive Simulator git

//  Obj - obj-format objects
//
//  Copyright (C) 2015 Sam Varner
//
//  This file is part of Vamos Automotive Simulator.
//
//  Vamos 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 3 of the License, or
//  (at your option) any later version.
//  
//  Vamos 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 Vamos.  If not, see <http://www.gnu.org/licenses/>.

#ifndef _MODEL_H_
#define _MODEL_H_

#include "../geometry/Three_Vector.h"

#include <GL/gl.h>
#include <assimp/scene.h>
#include <assimp/Importer.hpp>

#include <boost/filesystem.hpp>

#include <exception>
#include <string>
#include <map>

namespace fs = boost::filesystem;

class aiMaterial;
class aiNode;

namespace Vamos_Media
{
  class Model_Exception : public std::exception
  {
  public:
	Model_Exception (std::string message) : m_message (message) {};
    virtual ~Model_Exception () throw () {};
	virtual const char* what () const throw () { return m_message.c_str (); }
  private:
   	std::string m_message;
  };

  class Model_Cant_Convert_Image : Model_Exception
  {
  public:
    Model_Cant_Convert_Image (std::string path)
      : Model_Exception ("Can't convert image in file '" + path + "'") 
    {}
  };
  
  class Model_Cant_Load_Image : Model_Exception
  {
  public:
    Model_Cant_Load_Image (std::string path)
      : Model_Exception ("Can't load image from file '" + path + "'") 
    {}
  };
  
  class Model
  {
  public:
	Model (const std::string& file,
           double scale, 
           const Vamos_Geometry::Three_Vector& translation,
           const Vamos_Geometry::Three_Vector& rotation,
           bool two_sided = false);

    ~Model ();
    
    /// Render the object in a display list.
    /// @return the display list.
	GLuint build ();

  private:
    boost::filesystem::path m_file;
    void load_textures ();
    void render (const aiNode* nd);
    void apply_material (const aiMaterial& material);
    
    Assimp::Importer m_importer;
    const aiScene* mp_object;
    GLuint* mp_texture_ids;
    std::map <std::string, GLuint*> m_texture_id_map;
    
    double m_scale;
    Vamos_Geometry::Three_Vector m_translation;
    Vamos_Geometry::Three_Vector m_rotation;
    bool m_two_sided;
  };
}

#endif // not _MODEL_H_