Source: libmath-convexhull-monotonechain-perl Maintainer: Debian Perl Group Section: perl Testsuite: autopkgtest-pkg-perl Priority: optional Build-Depends: debhelper-compat (= 13), perl-xs-dev, perl:native Standards-Version: 3.9.4 Vcs-Browser: https://salsa.debian.org/perl-team/modules/packages/libmath-convexhull-monotonechain-perl Vcs-Git: https://salsa.debian.org/perl-team/modules/packages/libmath-convexhull-monotonechain-perl.git Homepage: https://metacpan.org/release/Math-ConvexHull-MonotoneChain Package: libmath-convexhull-monotonechain-perl Architecture: any Depends: ${misc:Depends}, ${perl:Depends}, ${shlibs:Depends} Description: Perl module to calculate a convex hull using Andrew's monotone chain algorithm Math::ConvexHull::MonotoneChain optionally exports a single function convex_hull which calculates the convex hull of the input points and returns it. Andrew's monotone chain convex hull algorithm constructs the convex hull of a set of 2-dimensional points in O(n*log(n)) time. . It does so by first sorting the points lexicographically (first by x-coordinate, and in case of a tie, by y-coordinate), and then constructing upper and lower hulls of the points in O(n) time. It should be somewhat faster than a plain Graham's scan (also O(n*log(n))) in practice since it avoids polar coordinates.