Abstract
This paper introduces a new approach to 2D line and polygon clipping against a rectangular clipping region, using space subdivision into cells, with the clipping region as the central cell. The line segment path is traced through the cells, and entries into and out of the cell corresponding to the clipping region enable computation of the intersection of the line segment with crossed cell edges. Tracing the line segment path is computationally very simple, leading to an algorithm that only computes intersections that the are part of the clipped line segment. The new algorithm is compared to other standard line clipping algorithms with simulations and operation counts.
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