ahull                                        alpha-convex hull calculation
alphahull-package                            Generalization of the convex hull of a sample of points in the plane
anglesArc                                    Angles of the extremes of an arc
arc                                          Add an arc to a plot
areaahull                                    Area of the alpha-convex hull
ashape                                       alpha-shape hull calculation
complement                                   Complement of the alpha-convex hull
delvor                                       Delaunay triangulation and Voronoi diagram
dummycoor                                    Semi-infinite edge of the Voronoi diagram
inahull                                      Determine whether a point belongs to the alpha-convex hull
inter                                        Intersection of two circumferences
koch                                         Construct a Kock snowflake curve
lengthahull                                  Length of the boundary of the alpha-convex hull
plot.ahull                                   Plot the alpha-convex hull
plot.ashape                                  Plot the alpha-shape
plot.delvor                                  Plot the Voronoi diagram and Delaunay traingulation
rkoch                                        Random generation on a Koch snowflake curve
rotation                                     Clockwise rotation
tricircum                                    Returns the circumcentres of a Delaunay triangulation