This data item defines a quadrilateral in space.
Other data items can check if nodes are located on this geometry.
The coordinates of
the corner points are x_0 y_0 z_0 etc..
In 1D, only x_0 etc. should be specified etc..
All node within a distance tolerance are considered
to be part of the quadrilateral (this gives a brick with thickness
). Internally in TOCHNOG,
the quadrilateral is divided into two
geometry_triangles, which is only approximately true if the
quadrilateral is twisted. Example
...
number_of_space_dimensions 2
...
geometry_quadrilateral 0 0. 0. 1. 0. 0. 1. 1. 1.
...