surface.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2026 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
 
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
 
#ifndef LIBMESH_SURFACE_H
#define LIBMESH_SURFACE_H
 
// Local includes
#include "libmesh/point.h"
 
namespace libMesh
{
 
class Surface
{
public:
 
  Surface () = default;
 
  Surface (const Surface &) = default;
 
  virtual ~Surface () = default;
 
  virtual bool above_surface (const Point & p) const = 0;
 
  virtual bool below_surface (const Point & p) const = 0;
 
  virtual bool on_surface (const Point & p) const = 0;
 
  virtual Point closest_point (const Point & p) const = 0;
 
  virtual Point unit_normal (const Point & p) const = 0;
 
  virtual Point surface_coords (const Point & world_coords) const { return world_coords; }
 
  virtual Point world_coords (const Point & surf_coords) const { return surf_coords; }
};
 
} // namespace libMesh
 
#endif // LIBMESH_SURFACE_H