3:51:22ck_slyrus_: iirc, you asked specifically about the bezier presentation and how to interact with it?
3:51:49ck_it is pretty customary to move those parts of the control polygon that are not interpolated relative to the ones that are
3:52:59ck_i.e. if you move the start point, the next control point moves with it; likewise with the point that connects the two cubic segments and both of the adjacent points
3:54:01ck_otherwise, it looks quite nice. There's some sluggishness to the redraw which is probably due to my X server being XQuartz