Terrific script.

For the top die, the tangent points of interest lie "below" its centerpoint. (?)
A short arc can be built between these two points.

For the bottom dies, the tangent points of interest lie "below" their centerline. (?)

If the "seams" (join point) of the circles are placed in the proper positions, and the circles are in the proper orientation [ CounterClockwise left die with Clockwise upper die ], or [ CW right die with CCW upper die ], then the first tangent point encountered for each circle will be the desired one, pairwise. The seams should be closest to the centerline midpoint. Which is the lowest point on the upper die circle, and innermost point of the outer two dies. ( This might be the midpoint of the upper die? )

Does MoI have any ways to determine CW vs CCW for the circles?, or arcs?



- Brian