circles_in_circle5sizes.gh (28.6 KB)
Here’s a version showing how you can have more different sizes.
I think it would be a pretty hard problem to find a global optimum for (in terms of minimum radii for the outer circle for a given set of circles inside), but I noticed you can often improve the packing by shrinking down the outer radius to give them a squeeze so they all overlap slightly, then bring it back up to a point where they are tangent again.
I found it interesting how if you keep doing this, it tends to push the smaller circles towards the middle.
