OOF2: The Manual
Bisection (Bisection) — Divide element edges into two.
rule_set parameter determines how the
interior of each element is subdivided, given the number of
subdivisions on each edge. The complete set of refinement rules
Bisection can be found in Table 6.8 and Table 6.9.
Figure 6.64 shows a
Skeleton refined by
conservative bisection rule set, which
preserves the topology of the elements (quadrilaterals beget
quadrilaterals and triangles beget triangles). The original
Skeleton is shown in Figure "Refining a Skeleton" (a), and
the refined elements are indicated with heavy black edges.
rule set is presented in Figure 6.65. As
Skeleton features a mixture of triangles and
quadrilaterals -- note that its original
Skeleton contained only