loader_obj.h

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/*
 * Copyright (c) 2009-2015:  G-CSC, Goethe University Frankfurt
 * Author: Sebastian Reiter
 * 
 * This file is part of UG4.
 * 
 * UG4 is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 3 (as published by the
 * Free Software Foundation) with the following additional attribution
 * requirements (according to LGPL/GPL v3 §7):
 * 
 * (1) The following notice must be displayed in the Appropriate Legal Notices
 * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (2) The following notice must be displayed at a prominent place in the
 * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (3) The following bibliography is recommended for citation and must be
 * preserved in all covered files:
 * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
 *   parallel geometric multigrid solver on hierarchically distributed grids.
 *   Computing and visualization in science 16, 4 (2013), 151-164"
 * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
 *   flexible software system for simulating pde based models on high performance
 *   computers. Computing and visualization in science 16, 4 (2013), 165-179"
 * 
 * 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 Lesser General Public License for more details.
 */
 
#ifndef __LIBMESH_LOADER_OBJ__
#define __LIBMESH_LOADER_OBJ__
 
#include <vector>
#include <string>
#include "../../math/ugmath.h"
 
namespace ug
{
 
 
class LoaderObj
{
  public:
    class Object
    {
      public:
        Object() : m_iMaterialIndex(-1) {}
 
        std::string m_strName;
        std::string m_strMaterialName;
        int     m_iMaterialIndex;
        std::vector<int>        m_vQuadList;
        std::vector<int>    m_vTriangleList;
        std::vector<int>        m_vQuadListTex;
        std::vector<int>    m_vTriangleListTex;
        std::vector<int>    m_vEdgeList;
    };
 
    class Material
    {
      public:
        std::string   m_strName;
        std::string   m_strTextureDiffuse;
        ug::vector4   m_vDiffuse;
        float     m_fAlpha;
    };
 
    typedef std::vector<Object*>  ObjectVector;
    typedef ObjectVector::iterator  ObjectIterator;
    typedef std::vector<Material> MaterialVector;
 
    ~LoaderObj();
    bool load_file(const char* strFilename, bool convertQuadsToTris = true);
    void clear();
 
    inline ObjectIterator objects_begin() {return m_vObjects.begin();}
    inline ObjectIterator objects_end()   {return m_vObjects.end();}
    inline int num_objects() const  {return m_vObjects.size();}
    inline const Object* get_object(int index) const {return m_vObjects[index];};
 
    inline int num_materials() const {return m_vMaterials.size();}
    inline const Material& get_material(int index) const {return m_vMaterials[index];}
 
    inline std::vector<ug::vector3>::const_iterator points_begin()  {return m_vPoints.begin();}
    inline std::vector<ug::vector3>::const_iterator points_end()  {return m_vPoints.end();}
    inline const ug::vector3* point(int index) const        {return &m_vPoints[index];}
    inline int num_points()                   {return m_vPoints.size();}
 
    inline std::vector<ug::vector2>::const_iterator uv_begin()  {return m_vTexCoords.begin();}
    inline std::vector<ug::vector2>::const_iterator uv_end()  {return m_vTexCoords.end();}
    inline const ug::vector2* uv(int index) const       {return &m_vTexCoords[index];}
    inline int num_uvs()                    {return m_vTexCoords.size();}
 
  protected:
    int get_material_index_by_name(const char* name) const;
 
    ObjectVector  m_vObjects;
    MaterialVector  m_vMaterials;
 
    std::vector<ug::vector3>  m_vPoints;
    std::vector<ug::vector2>  m_vTexCoords;
};
 
// end group ugbase_common_util
 
}
 
#endif