obj.hxx

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/*
 * COPYRIGHT (c) 2015 John Reppy (http://cs.uchicago.edu/~jhr)
 * All rights reserved.
 */

#ifndef _OBJ_HXX_
#define _OBJ_HXX_

#include "cs237.hxx"
#include <vector>

namespace OBJ {

enum {
    NoLight = 0,    
    Diffuse = 1,    
    Specular = 2    
};

struct Material {
    std::string     name;       
    int         illum;      
    cs237::color3f  ambient;    
    cs237::color3f  diffuse;    
    cs237::color3f  specular;   
    float       shininess;  
    std::string     ambientMap; 
    std::string     diffuseMap; 
    std::string     specularMap;    
    std::string     normalMap;  
};

struct Group {
    std::string     name;       
    int         material;   
    uint32_t        nVerts;     
    uint32_t        nIndices;   
    cs237::vec3f    *verts;     
    cs237::vec3f    *norms;     
    cs237::vec2f    *txtCoords; 
    uint32_t        *indices;   
};

class Model {
  public:

    Model (std::string filename);
    ~Model ();

    const cs237::AABBf &BBox () const { return this->_bbox; }

    int NumMaterials () const { return this->_materials.size(); }
    const OBJ::Material & Material (int i) const { return this->_materials[i]; }

    int NumGroups () const { return this->_groups.size(); }
    const OBJ::Group & Group (int i) const { return this->_groups[i]; }
    std::vector<OBJ::Group>::const_iterator beginGroups () const { return this->_groups.begin(); }
    std::vector<OBJ::Group>::const_iterator endGroups () const { return this->_groups.end(); }

  private:
    std::string     _path;      
    std::string     _mtlLibName;    
    cs237::AABBf    _bbox;      

    std::vector<OBJ::Material> _materials;
    std::vector<OBJ::Group> _groups;

  // read a material library
    bool readMaterial (std::string m);

};

}; // namespace OBJ

#endif // !_OBJ_HXX_