quadrature_grid_1D.C

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2018 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



// C++ includes

// Local includes
#include "libmesh/quadrature_grid.h"

namespace libMesh
{



void QGrid::init_1D(const ElemType,
                    unsigned int)
{
  //----------------------------------------------------------------------
  // 1D quadrature rules

  // We ignore p - the grid rule is just for experimentation

  _points.resize(_order + 1);
  _weights.resize(_order + 1);
  const Real dx = Real(2)/(_order+1);
  for (int i = 0; i != _order + 1; ++i)
    {
      _points[i](0) = (i+0.5)*dx-1;
      _weights[i] = dx;
    }
  return;
}

} // namespace libMesh