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An interface for strategies for determining the location of split points on constraint segments.
The location of split points has a large effect on the performance and robustness of enforcing a
constrained Delaunay triangulation. Poorly chosen split points can cause repeated splitting,
especially at narrow constraint angles, since the split point will end up encroaching on the
segment containing the original encroaching point. With detailed knowledge of the geometry of the
constraints, it is sometimes possible to choose better locations for splitting.