Yes the plugin distort curve is a free Plugin by Max Smirnov!
http://moi3d.com/forum/index.php?webtag=MOI&msg=6659.13


The Flow Function is a native function of Moi3D! ;)
http://moiscript.weebly.com/enrobage-dobjet-v3.html video in French :)
http://moiscript.weebly.com/enrobage-dun-tore-v3.html a another one! ;) Minute 5 : 20