http://www.perlmonks.org?node_id=1011795


in reply to J-spline Perl implementation

Awesome how this works! Huge thanks for putting this code up for us. How do we specify points to get your "Fig. 1" (js.pdf) - if I literally supply 4 points, it draws a "U", more than 4 and it joins the start/end to a corner (making it look kindoflike a baloon). What's the trick to get a symmetrical circle-ish output?