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#ifndef __TESSELATE_H
#define __TESSELATE_H

#include "CGLA/Vec3f.h"
#include "Util/Grid2D.h"
#include "IndexedFaceSet.h"

namespace Geometry
{
        
        class ParSurf
{
public:
        virtual CGLA::Vec3f operator()(float u, float v) const = 0;
};

extern float MAX_ERR;
extern float MAX_DIST;
extern int ADAPTIVE;


void tessellate(IndexedFaceSet& face_set, ParSurf& s,
                           float u_min, float u_max, float v_min, float v_max, 
                           int n, int m);

void tessellate(IndexedFaceSet& face_set, ParSurf& s, 
                           Util::Grid2D<CGLA::Vec3f>& inigrid);

void tessellate(IndexedFaceSet& face_set, ParSurf& s, 
                           std::vector<CGLA::Vec2f> uv_points,
                           std::vector<CGLA::Vec3i> triangles);
}

#endif