We introduce a new BSP tree construction method for set
of segments in the plane. Our algorithm is able to create
BSP tree of linear size in the time $O(n \log^3 n)$
for set of segments with low directional
density (i.e. it holds for arbitrary segment $s_i$ from such set, that a line
created as extension of this segment doesn't intersect too many
other segments from the set in a near neighbourhood of $s_i$)
and a directional constant $\delta$ belonging to this set.
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