I’ve been searching everywhere for the concept of Flow Maps in materials/textures in TouchDesigner and I’m not sure if Touch just uses different terminology or if it doesn’t exist yet. maybe this is possible in a fragment shader, i just don’t have the skill for that yet 
This feature would really help me on a project right now. Any suggestions?
[url]http://wiki.polycount.com/wiki/Flow_map[/url] for reference of what I mean