Technical Report CS0639

TR#:CS0639
Class:CS
Title: VARIATIONS ON RAY SHOOTING
Authors: R~ Bar-Yehuda and S. Fogel
PDFCS0639.pdf
Abstract: We solve some problems related to Ray shooting in the plane, such as finding the first object hit by a query ray or counting their number. Our main results are an algorithm for finding the first hit when the objects are segments, and an algorithm for the case when the objects a.re lines. Both algorithms improve over the previous algorithms in preprocessing and space, while for segments, we improve also the query time. Moreover, our algorithms are simple and therefore of practical use.
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