This module computes the barycenter\index{barycenter} 
(center of mass\index{center of mass|see{barycenter}}) 
of all points encountered in a set
of Fcurves. This barycenter is given by
$$(x_G,y_G) = 
\frac{\displaystyle \sum_{i=1}^n \sum_{j=1}^{n_i} (x_{i,j},y_{i,j})}
{\displaystyle \sum_{i=1}^n n_i},$$
where $j \in \{1,\ldots n_i\} \mapsto (x_{i,j},y_{i,j})$ describes
the curve number $i$ of the Fcurves structure.