+ void *BlockData() noexcept { return &blocks[0]; }
+ const void *BlockData() const noexcept { return &blocks[0]; }
+ static constexpr std::size_t BlockSize() noexcept { return sizeof(blocks) + sizeof(light); }
+
+ void Invalidate() noexcept { dirty_model = dirty_save = true; }
+ void InvalidateModel() noexcept { dirty_model = true; }
+ void ClearModel() noexcept { dirty_model = false; }
+ void ClearSave() noexcept { dirty_save = false; }
+ bool ShouldUpdateModel() const noexcept { return dirty_model; }
+ bool ShouldUpdateSave() const noexcept { return dirty_save; }
+