// -*- C++ -*-
// $Id: quadrics.h,v 1.7 1997/10/01 14:07:29 garland Exp $

#include "AdjModel.h"
#include <gfx/math/Mat4.h>

namespace simplif
{
	extern Mat4 quadrix_vertex_constraint(const Vec3&);
	extern Mat4 quadrix_plane_constraint(real a, real b, real c, real d);
	extern Mat4 quadrix_plane_constraint(Face& T);
	extern Mat4 quadrix_plane_constraint(const Vec3& n, real);
	extern Mat4 quadrix_plane_constraint(const Vec3&, const Vec3&, const Vec3&);
	extern real quadrix_evaluate_vertex(const Vec3& v, const Mat4& K);


	extern bool check_for_discontinuity(Edge *);
	extern Mat4 quadrix_discontinuity_constraint(Edge *, const Vec3&);
	extern Mat4 quadrix_discontinuity_constraint(Edge *);


	extern bool quadrix_find_local_fit(const Mat4& Q,
					   const Vec3& v1, const Vec3& v2,
					   Vec3& candidate);
	extern bool quadrix_find_line_fit(const Mat4& Q,
					  const Vec3& v1, const Vec3& v2,
					  Vec3& candidate);
	extern bool quadrix_find_best_fit(const Mat4& Q, Vec3& candidate);
	extern real quadrix_pair_target(const Mat4& Q,
					Vertex *v1,
					Vertex *v2,
					Vec3& candidate);
}