which might also require transforming the default idea of “mapping” or “relationship” – Merleau-Ponty’s “intentional arc” is the key concept here… you start to think of the arc itself or the coupling or the “between” as the medium of creative exploration. it may be worth it at least once in your life to read his Phenomenology of Perception… it takes a lot more than I can do in a short post to really do justice to these ideas… roots also in biologist Jakob von Uexkull’s ideas of “search image/search tone” or more generally Umwelt/Innenwelt, going back to the early 1900’s… anyway, this theory is way more foundational than the “lite” approach of “affordance-based design” which for the most part sneaks in subject/object or substance ontology through the back door by reifying the affordance as a “property” of an “interaction”, knowable in advance – and hence also disconnecting it from the broader world of significance involving goals, life-purposes and so on. Basically when cognitive science gets in any way involved, time to distrust things a bit 
also if you’re totally serious about moving beyond merely indicative gesture, the Laban/Bartenieff system coming from dance (i.e. “Body/Effort/Shape/Space”) may be ultimately much more meaningful. of course this kinda assumes you’re doing full-body immersive interaction. Not sure I know of a good resource here, though I’ve been intrigued by this many times myself. although thanks to computational challenges and general lack of interest I don’t think anyone has done more than scratch the surface here. Technology in general has neglected the body and emotion for reasons I’ve discussed on other threads, basically they fail to show up at all under the Cartesian paradigm. For exactly the same reasons, dance seems to always have a lesser or secondary status in the technologically mediated arts, where it really should be the primary thing out of which everything else develops. [On the downside the Laban/Bartenieff system thanks to its basis in high modernism still seems rigidly anthropocentric… not quite interesting when you’re also exploring ideas of nonhuman bodies, or transformation, or in general virtually mapping concepts of body. but that’s just my own weird and highly underdeveloped perspective. still need to crawl before you can walk and all that.]