static_mesh.hpp

// SPDX-License-Identifier: MIT
#ifndef LIBSBX_SCENES_COMPONENTS_STATIC_MESH_HPP_
#define LIBSBX_SCENES_COMPONENTS_STATIC_MESH_HPP_
 
#include <vector>
#include <cinttypes>
 
#include <libsbx/math/color.hpp>
#include <libsbx/math/uuid.hpp>
 
#include <libsbx/graphics/resource_storage.hpp>
 
#include <libsbx/graphics/images/image2d.hpp>
 
namespace sbx::scenes {
 
class static_mesh final {
 
public:
 
  struct submesh {
    std::uint32_t index;
    math::uuid material;
  }; // struct submesh
 
  static_mesh() = default;
 
  static_mesh(const math::uuid mesh_id, const math::uuid material)
  : _mesh_id{mesh_id},
    _submeshes{{0, material}} { }
 
  static_mesh(const math::uuid mesh_id, const std::vector<submesh>& submeshes)
  : _mesh_id{mesh_id},
    _submeshes{submeshes} { }
 
  static_mesh(const math::uuid mesh_id, std::initializer_list<submesh> submeshes)
  : _mesh_id{mesh_id},
    _submeshes{submeshes} { }
 
  auto mesh_id() const noexcept -> math::uuid {
    return _mesh_id;
  }
 
  auto set_mesh_id(const math::uuid mesh_id) noexcept -> void {
    _mesh_id = mesh_id;
  }
 
  auto submeshes() const noexcept -> const std::vector<submesh>& {
    return _submeshes;
  }
 
  auto submeshes() noexcept -> std::vector<submesh>& {
    return _submeshes;
  }
 
  auto resize_submeshes(const std::size_t count) -> void {
    const auto previous = _submeshes.size();
 
    _submeshes.resize(count);
 
    for (auto i = previous; i < count; ++i) {
      _submeshes[i] = submesh{static_cast<std::uint32_t>(i), math::uuid::nil()};
    }
  }
 
  auto set_submesh_material(const std::size_t index, const math::uuid material) -> void {
    if (index >= _submeshes.size()) {
      return;
    }
 
    _submeshes[index].material = material;
  }
 
private:
 
  math::uuid _mesh_id;
  std::vector<submesh> _submeshes;
 
}; // class static_mesh
 
} // namespace sbx::scenes
 
#endif // LIBSBX_SCENES_COMPONENTS_STATIC_MESH_HPP_