ModelImporter.h

// Copyright 2022 ShenMian
// License(Apache-2.0)
 
#pragma once
 
#include "Mesh.h"
#include <filesystem>
#include <functional>
 
class Mesh;
class Model;
class Vector;
class Animation;
struct Material;
 
struct aiScene;
struct aiNode;
struct aiMesh;
struct aiMaterial;
struct aiAnimation;
 
class ModelImporter
{
public:
    Model load(const std::filesystem::path& path, std::function<void(float)> callback = nullptr);
 
private:
    void load_scene();
    void load_node(const aiNode&);
    void load_mesh(const aiMesh&);
    void load_material(const aiMaterial&);
    void load_animation(const aiAnimation&);
 
    std::vector<Mesh::Vertex> load_vertices(const aiMesh&) noexcept;
    std::vector<unsigned int> load_indices(const aiMesh&) noexcept;
 
    const aiScene* scene_;
    Model*         model_;
};