Detecting the Observation Region: The Coupled Ring Adjacency Search

At this point, we have an Icosphere which we can uniformly recurse to any depth we like. We also know that we can asymetrically recurse any arbitrary face of the icosphere, but we have no system for detecting or determining which face(s) to recurse. Ultimately, we want the faces directly "below" the observer to be the faces under recursion - and the rest of the icosphere to remain unaffected.