#include "globals.h"
#include <vector>
#include <set>

#include "Mesh.h"

using TXS::UVs;
using TXS::TiffImage;

namespace CCS
{
	/* 
	 * This is a class that runs the tbird UV synthesis procedure over a Mesh.
	 * It assigns appropriate UV coords and txtr pointers to
	 * every face on the mesh.
	 */
	class TbirdUvSynth
	{
		private:

			static const int NUM_TBIRD_UVS;

			/*
			 * The 4 UVs we'll be throwing around
			 * 00 10 11 01
			 */
			vector<UVs> tbirdUVs;

			TiffImage *tbirdTxtr;

			set<Face*> visitedFaces;

			/*
			 * This will return false if f was already in the visited list
			 */
			bool addVisitedFace(Face* f);

			/*
			 * Returns the tbird UV number that the neighbor (an edge nbor)
			 * should start with if the current face starts at vertStart
			 * at the shared edge.
			 */
			int getStartUvForNbor(int vertStart);

			/*
			 * The main recursive func
			 */
			void synthUVs(Face* f, Vertex* startVert, int startUvNum);

		public:

			TbirdUvSynth();

			void synth(Mesh *mesh, TiffImage *txtr);

	};
}