edge - reference element (rheolef-7.2)

       Pierre  Saramito  <Pierre.Saramito@imag.fr>

       Copyright   (C)  2000-2018  Pierre  Saramito  <Pierre.Saramito@imag.fr> GPLv3+: GNU GPL version 3 or
       later  <http://gnu.org/licenses/gpl.html>.  This  is  free  software:  you  are free to change and
       redistribute it.  There is NO WARRANTY, to the extent permitted by law.

rheolef                                            Version 7.2                                    edge(6rheolef)

       The edge reference_element(6) is K = [0,1].

           0---------1
                x

        This one-dimensional reference_element(6) is then transformed, after the Piola geometrical application,
       as a segment in a 1D, 2D or 3D physical space, as a geo_element(6).

       Curved high order transformed geo_element(6) Pk edges (k >= 1) are supported for 2D or 3D geometries. In
       these cases, the nodes of an high-order edge are numbered as:

         0----2----1     0--2--3--1    0-2-3-4-1
             P2              P3           P4

        It means that boundary nodes come first, and then are the internal nodes.

       This documentation has been generated from file fem/geo_element/edge.icc

       const size_t dimension = 1;
       const Float  measure = 1;
       const size_t n_vertex = 2;
       const point vertex [n_vertex] = {
               point(0),
               point(1) };

       edge - reference element (rheolef-7.2)