101 lines
2.2 KiB
C++
Executable File
101 lines
2.2 KiB
C++
Executable File
#pragma once
|
|
|
|
#include <filesystem>
|
|
#include <system_error>
|
|
#include <string_view>
|
|
#include "assets/data/mesh_data.hpp"
|
|
#include "assets/data_stores.hpp"
|
|
#include "assets/path_id_lookups.hpp"
|
|
#include <unordered_map>
|
|
#include "util/array_hash.hpp"
|
|
|
|
namespace assets::obj_parser_error
|
|
{
|
|
enum class codes {
|
|
ok = 0,
|
|
cannot_open_file,
|
|
malformed_vertex,
|
|
malformed_texture_coordinate,
|
|
malformed_normal,
|
|
malformed_face,
|
|
face_index_out_of_range,
|
|
unknown_line_begin,
|
|
use_material_without_material_library,
|
|
unknown_material_name
|
|
};
|
|
} // namespace obj_loader_error
|
|
|
|
namespace assets
|
|
{
|
|
|
|
struct obj_parser
|
|
{
|
|
static constexpr auto name = std::string_view("obj");
|
|
using data_type = mesh_data;
|
|
using store_type = mesh_store;
|
|
using lookup_type = mesh_id_lookup;
|
|
|
|
// TODO port this mess to the new interface
|
|
[[nodiscard]] std::error_code prefetch(
|
|
path_id_lookups& lookups
|
|
);
|
|
|
|
[[nodiscard]] std::error_code load(
|
|
path_id_lookups& lookups,
|
|
data_stores& stores,
|
|
bool pedantic = false
|
|
);
|
|
|
|
protected:
|
|
using component_indices = std::array<z3d::vertex_index, 3>;
|
|
|
|
class prefetcher_context
|
|
{
|
|
public:
|
|
prefetcher_context(
|
|
path_id_lookups& id_lookups
|
|
);
|
|
|
|
void operator()(lookup_type::const_pointer entry) noexcept;
|
|
|
|
private:
|
|
path_id_lookups* m_id_lookups;
|
|
std::vector<char> m_buffer{};
|
|
};
|
|
|
|
class parser_context
|
|
{
|
|
public:
|
|
parser_context(
|
|
path_id_lookups& m_id_lookups,
|
|
data_stores& m_stores
|
|
);
|
|
|
|
void operator()(lookup_type::const_pointer entry) noexcept;
|
|
|
|
protected:
|
|
void reset();
|
|
|
|
z3d::vertex_index find_or_push_vertex(const component_indices& vertex_comp_indices);
|
|
|
|
[[nodiscard]] std::optional<texture_id> fetch_texture_id(
|
|
const std::filesystem::path& mtl_dir,
|
|
std::string_view filename,
|
|
std::string_view texture_type_name
|
|
);
|
|
|
|
private:
|
|
path_id_lookups* m_id_lookups;
|
|
data_stores* m_stores;
|
|
data_type m_mesh{};
|
|
std::vector<mesh_vertex_components::position> m_position_buffer{};
|
|
std::vector<mesh_vertex_components::normal> m_normal_buffer{};
|
|
std::vector<mesh_vertex_components::tex_coord> m_tex_coord_buffer{};
|
|
std::unordered_map<component_indices, z3d::vertex_index> m_vertex_comp_indices_to_vertex_index{};
|
|
};
|
|
|
|
private:
|
|
std::vector<lookup_type::const_pointer> m_path_buffer;
|
|
};
|
|
}
|