load_obj.hpp

#pragma once
#include <future>
#include <iostream>
#include <map>
#include <unordered_map>
#include <optional>
#include <vector>
 
 
#include "math/vector_2.h"
#include "math/vector_3.h"
#include "tiny_obj_loader.h"
 
class ResourceManager;
 
struct Vertex {
  coma::Vec3 pos = {0.0f, 0.0f, 0.0f};
  coma::Vec3 nor = {0.0f, 0.0f, 0.0f};
  coma::Vec2 uv = {0.0f, 0.0f};
 
  bool operator==(const Vertex& other) const {
    return (other.pos == pos && other.nor == nor && other.uv == uv);
  }
};
 
class Obj {
 public:
  Obj() = default;
 
  static std::optional<Obj> loadObj(const std::string& dir,
                                     const std::string& name);
 
  bool createBuffers(ResourceManager& e);
 
  tinyobj::attrib_t attrib_;
  std::vector<tinyobj::shape_t> shapes_;
  std::vector<tinyobj::material_t> materials_;
  std::string name_;
  std::vector<Vertex> vertex_map_;
 
};