BIB-VERSION:: CS-TR-v2.0 ID:: ncstrl.dartmouthcs//TR90-147 ENTRY:: January 20, 1995 ORGANIZATION:: Dartmouth College, Computer Science TITLE:: Building Voronoi Diagrams for Convex Polygons in Linear Expected Time TYPE:: Technical Report (paper) REVISION:: 1 AUTHOR:: Chew, L. Paul NOTE:: The 'January' in DATE is an arbitrary placeholder. DATE:: January 1990 RETRIEVAL:: For a paper copy, email RETRIEVAL:: For a paper copy, write to Technical Report Librarian Department of Computer Science Dartmouth College 6211 Sudikoff Laboratory Hanover, NH 03755-3510 USA RETRIEVAL:: PDF at http://www.cs.dartmouth.edu/reports/TR90-147.pdf ABSTRACT:: Let P be a list of points in the plane such that the points of P taken in order form the vertices of a convex polygon. We introduce a simple, linear expected-time algorithm for finding the Voronoi diagram of the points in P. Unlike previous results on expected-time algorithms for Voronoi diagrams, this method does not require any assumptions about the distribution of points. With minor modifications, this method can be used to design fast algorithms for certain problems involving unrestricted sets of points. For example, fast expected-time algorithms can be designed to delete a point from a Voronoi diagram, to build an order k Voronoi diagram for an arbitrary set of points, and to determine the smallest enclosing circle for points at the vertices of a convex hull. END:: ncstrl.dartmouthcs//TR90-147