GeoEdgeLoop

Thanks to Ben "poopinmymouth" Mathis for the original concept

IC.GeoEdgeLoop refits one or multiple closed edge loops to regular polygons. It works on Editable Poly Objects and Edit Poly Modifiers.

On single edge loop selection two algorithms are available: Refit by Vertex and Average. On multiple edge loop selection only Average is available. The edge loop is flattened on the average plane.

• Refit by vertex - ask for a vertex as fixed starting point for calculation. Its position is preserved, while other vertexes slide around.The polygon radius is got as the average distance from centroid to every loop vertex.
• Refit average - works iteratively on every vertex until a regular polygon is shaped by subsequent shifts. It checks for edge length and angle between edges. If calculation takes too long or seems freezing the system, press ESC to cancel the command.

Select one or more closed edge loops, run the script, follow on screen instructions. Right click aborts the command. Autodesk 3ds Max 9+
Additional requirement for 3ds Max release 9 only
AVGuard MAXScript Extension Package 9.0.0 by Larry Minton

Download — version 0.4 — 2009.10.27 — 8.40 KBytes

Discussion thread on Polycount forum