LCOV - code coverage report
Current view: top level - src/mesquite/MappingFunction/Lagrange - QuadLagrangeShape.hpp (source / functions) Hit Total Coverage
Test: coverage_sk.info Lines: 1 1 100.0 %
Date: 2020-07-18 00:09:26 Functions: 1 1 100.0 %
Branches: 1 2 50.0 %

           Branch data     Line data    Source code
       1                 :            : /* *****************************************************************
       2                 :            :     MESQUITE -- The Mesh Quality Improvement Toolkit
       3                 :            : 
       4                 :            :     Copyright 2006 Lawrence Livermore National Laboratory.  Under
       5                 :            :     the terms of Contract B545069 with the University of Wisconsin --
       6                 :            :     Madison, Lawrence Livermore National Laboratory retains certain
       7                 :            :     rights in this software.
       8                 :            : 
       9                 :            :     This library is free software; you can redistribute it and/or
      10                 :            :     modify it under the terms of the GNU Lesser General Public
      11                 :            :     License as published by the Free Software Foundation; either
      12                 :            :     version 2.1 of the License, or (at your option) any later version.
      13                 :            : 
      14                 :            :     This library is distributed in the hope that it will be useful,
      15                 :            :     but WITHOUT ANY WARRANTY; without even the implied warranty of
      16                 :            :     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      17                 :            :     Lesser General Public License for more details.
      18                 :            : 
      19                 :            :     You should have received a copy of the GNU Lesser General Public License
      20                 :            :     (lgpl.txt) along with this library; if not, write to the Free Software
      21                 :            :     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
      22                 :            : 
      23                 :            :     (2006) [email protected]
      24                 :            : 
      25                 :            :   ***************************************************************** */
      26                 :            : 
      27                 :            : #ifndef MSQ_QUAD_LAGRANGE_SHAPE_HPP
      28                 :            : #define MSQ_QUAD_LAGRANGE_SHAPE_HPP
      29                 :            : 
      30                 :            : /** \file QuadLagrangeShape.hpp
      31                 :            :  *  \brief Lagrange mapping funtion for a 9-node quad.
      32                 :            :  *  \author Jason Kraftcheck
      33                 :            :  */
      34                 :            : 
      35                 :            : #include "MappingFunction.hpp"
      36                 :            : 
      37                 :            : namespace MBMesquite
      38                 :            : {
      39                 :            : 
      40                 :            : /**\brief Lagrange shape function for 9-node quadrilateral elements
      41                 :            :  *
      42                 :            :  * This class implements the MappingFunction interface, providing
      43                 :            :  * a Lagrange shape function for quadrilateral elements.
      44                 :            :  *
      45                 :            :  * \f$\vec{x}(\xi,\eta) = \sum_{i=0}^{n-1} N_i(\xi,\eta) \vec{x_i}\f$
      46                 :            :  *
      47                 :            :  * \f$N_a = l^2_b(\xi) l^2_c(\eta)\f$
      48                 :            :  *
      49                 :            :  * \f$l^2_1(\xi) = (\xi - 1) (2 \xi - 1)\f$
      50                 :            :  *
      51                 :            :  * \f$l^2_2(\xi) = 4 \xi (1 - \xi)\f$
      52                 :            :  *
      53                 :            :  * \f$l^2_3(\xi) = \xi (2 \xi - 1)\f$
      54                 :            :  *
      55                 :            :  * \f$\begin{array}{ccc}
      56                 :            :  *    a & b & c \\ \hline
      57                 :            :  *    0 & 1 & 1 \\
      58                 :            :  *    1 & 3 & 1 \\
      59                 :            :  *    2 & 3 & 3 \\
      60                 :            :  *    3 & 1 & 3 \\
      61                 :            :  *    4 & 2 & 1 \\
      62                 :            :  *    5 & 3 & 2 \\
      63                 :            :  *    6 & 2 & 3 \\
      64                 :            :  *    7 & 1 & 2 \\
      65                 :            :  *    8 & 2 & 2 \end{array}\f$
      66                 :            :  *
      67                 :            :  */
      68         [ -  + ]:        394 : class MESQUITE_EXPORT QuadLagrangeShape : public MappingFunction2D
      69                 :            : {
      70                 :            :   public:
      71                 :            :     virtual EntityTopology element_topology() const;
      72                 :            : 
      73                 :            :     virtual int num_nodes() const;
      74                 :            : 
      75                 :            :     virtual void coefficients( Sample location, NodeSet nodeset, double* coeff_out, size_t* indices_out,
      76                 :            :                                size_t& num_coeff_out, MsqError& err ) const;
      77                 :            : 
      78                 :            :     virtual void derivatives( Sample location, NodeSet nodeset, size_t* vertex_indices_out,
      79                 :            :                               MsqVector< 2 >* d_coeff_d_xi_out, size_t& num_vtx, MsqError& err ) const;
      80                 :            : 
      81                 :            :     virtual void ideal( Sample location, MsqMatrix< 3, 2 >& jacobian_out, MsqError& err ) const;
      82                 :            : };
      83                 :            : 
      84                 :            : }  // namespace MBMesquite
      85                 :            : 
      86                 :            : #endif

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