obj_parser.h

#ifndef OBJ_PARSER_H
#define OBJ_PARSER_H

#include "list.h"

#define OBJ_FILENAME_LENGTH 2048
#define MATERIAL_NAME_SIZE 1024
#define OBJ_LINE_SIZE 1024
#define MAX_VERTEX_COUNT 4 //can only handle quads or triangles

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

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

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

struct obj_vector {
        double e[3];
};

struct obj_material {
        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;
};

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

struct obj_light_point {
        int pos_index;
        int material_index;
};

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

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

struct obj_growable_scene_data {
//      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;
};

struct obj_scene_data {
        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;
};

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

#endif