Differential D14368 Diff 49369 source/blender/io/wavefront_obj/exporter/obj_export_mesh.hh

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	* Polygon aligned array of their smooth groups.	* Polygon aligned array of their smooth groups.
	*/	*/
	int *poly_smooth_groups_ = nullptr;	int *poly_smooth_groups_ = nullptr;
		/**
		* Order in which the polygons should be written into the file (sorted by material index).
		*/
		Vector<int> poly_order_;

	public:	public:
	/**	/**
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	*/	*/
	std::optional<std::array<int, 2>> calc_loose_edge_vert_indices(int edge_index) const;	std::optional<std::array<int, 2>> calc_loose_edge_vert_indices(int edge_index) const;

		/**
		* Calculate the order in which the polygons should be written into the file (sorted by material index).
		*/
		void calc_poly_order();

		/**
		* Remap polygon index according to polygon writing order.
		* When materials are not being written, the polygon order array
		* might be empty, in which case remap is a no-op.
		*/
		int remap_poly_index(int i) const
		{
		return i < 0 \|\| i >= poly_order_.size() ? i : poly_order_[i];
		}

	private:	private:
	/**	/**
	* Free the mesh if _the exporter_ created it.	* Free the mesh if _the exporter_ created it.
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