There is one figure provided on the disc: ex_sweep.tif : A sweeping example using B-spline curve. The rigid motion is constructed by a pair of B-spline curve and B-spline quaternion curve. The following MPEG files are included. They are playable with mpeg_play, Berkeley MPEG player. In the descriptions of the files, a curve pair means a pair of position curve and orientation(unit quaternion) curve, which represents a rigid motion. boom.mpg : A boomerang animation using one Hermite curve pair. plane.mpg : An air-plane animation using three Hermite curve pair. bspline.mpg : A motion example using B-spline curve pairs. Control points and orientations are depicted smooth.mpg : An animation demonstrating cubic B-spline orientation interpolation. The generated curve C2-continuous and extremely smooth. QuickTime versions of these four movies are also included on the disc for those who do not have good MPEG capabilities. There are small sized versions of the above MPEG files, for faster frame rate, with the following names. boom_s.mpg bspline_s.mpg plane_s.mpg smooth_s.mpg Keywords : curve, quaternion, rotation, orientation, SO(3), Bezier, Hermite, B-spline