obj_parser.h

#ifndef OBJ_PARSER_H
#define OBJ_PARSER_H

#define OBJ_FILENAME_LENGTH 500
#define MATERIAL_NAME_SIZE 255
#define OBJ_LINE_SIZE 500
#define MAX_VERTEX_COUNT 4 //can only handle quads or triangles

char strequal(const char *s1, const char *s2);
char contains(const char *haystack, const char *needle);

typedef struct
{
    int item_count;
    int current_max_size;
    char growable;

    void **items;
    char **names;   
} list;

void list_make(list *listo, int size, char growable);
int list_add_item(list *listo, void *item, char *name);
char* list_print_items(list *listo);
void* list_get_name(list *listo, char *name);
void* list_get_index(list *listo, int indx);
void* list_get_item(list *listo, void *item_to_find);
int list_find(list *listo, char *name_to_find);
void list_delete_index(list *listo, int indx);
void list_delete_name(list *listo, char *name);
void list_delete_item(list *listo, void *item);
void list_delete_all(list *listo);
void list_print_list(list *listo);
void list_free(list *listo);

void test_list();

typedef struct 
{
    int vertex_index[MAX_VERTEX_COUNT];
    int normal_index[MAX_VERTEX_COUNT];
    int texture_index[MAX_VERTEX_COUNT];
    int vertex_count;
    int material_index;
} obj_face;

typedef struct 
{
    int pos_index;
    int up_normal_index;
    int equator_normal_index;
    int texture_index[MAX_VERTEX_COUNT];
    int material_index;
} obj_sphere;

typedef struct 
{
    int pos_index;
    int normal_index;
    int rotation_normal_index;
    int texture_index[MAX_VERTEX_COUNT];
    int material_index;
} obj_plane;

typedef struct 
{
    double e[3];
} obj_vector;

typedef struct 
{
    char name[MATERIAL_NAME_SIZE];
    char texture_filename[OBJ_FILENAME_LENGTH];
    double amb[3];
    double diff[3];
    double spec[3];
    double reflect;
    double refract;
    double trans;
    double shiny;
    double glossy;
    double refract_index;
} obj_material;

typedef struct 
{
    int camera_pos_index;
    int camera_look_point_index;
    int camera_up_norm_index;
} obj_camera;

typedef struct 
{
    int pos_index;
    int material_index;
} obj_light_point;

typedef struct 
{
    int pos_index;
    int normal_index;
    int material_index;
} obj_light_disc;

typedef struct 
{
    int vertex_index[MAX_VERTEX_COUNT];
    int material_index;
} obj_light_quad;

typedef struct 
{
//  vector extreme_dimensions[2];
    char scene_filename[OBJ_FILENAME_LENGTH];
    char material_filename[OBJ_FILENAME_LENGTH];
    
    list vertex_list;
    list vertex_normal_list;
    list vertex_texture_list;
    
    list face_list;
    list sphere_list;
    list plane_list;
    
    list light_point_list;
    list light_quad_list;
    list light_disc_list;
    
    list material_list;
    
    obj_camera *camera;
} obj_growable_scene_data;

typedef struct 
{
    obj_vector **vertex_list;
    obj_vector **vertex_normal_list;
    obj_vector **vertex_texture_list;
    
    obj_face **face_list;
    obj_sphere **sphere_list;
    obj_plane **plane_list;
    
    obj_light_point **light_point_list;
    obj_light_quad **light_quad_list;
    obj_light_disc **light_disc_list;
    
    obj_material **material_list;
    
    int vertex_count;
    int vertex_normal_count;
    int vertex_texture_count;

    int face_count;
    int sphere_count;
    int plane_count;

    int light_point_count;
    int light_quad_count;
    int light_disc_count;

    int material_count;

    obj_camera *camera;
} obj_scene_data;

int parse_obj_scene(obj_scene_data *data_out, char *filename);
void delete_obj_data(obj_scene_data *data_out);

#endif