Fig. 40.

Decomposing of a trimmed domain ${\mathcal{A}}^{\text{v}}$ into b regular four-sided patches ${\mathcal{R}}_i.$ In a, the trimming curves are continuous whereas the linear approximation is illustrated by dashed lines. Further, vertex ${\mathit{x}}_0$ and ${\mathit{x}}_4$ are connected by a double edge