Here I'm experimenting with an agent based packing system where forces become more local, between circles and immediate neighbours. Real time control of the range and influence of cohesive and separative forces make for some stable tightly packed results while keeping the time step reasonably high. An agent based approach also presents some opportunities for embedding other properties that update over time. In this case, the radii vary based on some external attractor relationships but I'm looking to have it also informed by a "pressure" value received at each time step. Alternatively I could go find some spongy marbles.
Platforms: VB.net, Grasshopper, Rhino