Circle packing definition?

Hey all.

Complete Grasshopper newb, with absolutely no programming knowledge whatsoever. I'm trying to figure out a definition where an array of circles are generated in a boundary within two polycurves; and all the circles are tangent not only to the boundary curves but also to each other. However, circles that are closer to one of the boundary lines would have double the radii to those that are further away from the very same boundary line.

I've tried to adapt the "attractor curve" definition I found on the digitaltoolbox website; but I can't quite figure out how to restrict the grid within a set of boundary curves. Plus, what I'm trying to do is more of an array than a grid (i.e. the circles are closely packed to each other, and thus there isn't any predefined distance between their centre points).

Any one know what definitions I should be looking at?