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← Logic & PuzzlesDuring a computational geometry problem of finding intersecting line segments within a map, which outcome occurs when the sweep line encounters a new event point?
A)The algorithm terminates immediately
B)Only segments above event considered
C)Potential intersections get efficiently checked✓
D)Previous intersection results are discarded
💡 Explanation
When the sweep line in a line intersection algorithm encounters a new event point, the sweep line algorithm checks for potential intersections between the newly active segments, because the sweep line mechanism maintains an ordered representation of the segments intersecting the line; therefore, segments close to each other in the ordering are checked, rather than checking all pairs.
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