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returns all face loops as a list of their edge keys Used this in uvcalc_follow_active_coords to speed it from 5.53sec to 0.098 on a 1000 face mesh.
Added a new mode that generaly gives better results. "Loop Average" - It gives good results for mapping roads that are more then just 1 quad wide. Thanks LucidMonkey for pointing this out. See the bottom of these docs. http://mediawiki.blender.org/index.php/Scripts/Manual/UV_Calculate/Follow_active_quads