I actually almost finished a script for doing this in Maya and then realized that this functionality already exists in 2013. Could still be useful in 2012 and older. It still has a king that needs fixing and it's really slow (40sec for 10k tris) so I'm not sure I'll bother releasing it. Learned a couple of things by…
Discuss face weighted normals. (or FWN for short) Oftentimes I wonder why certain features are left out of the major 3d packages, and usually I will figure out why it was ignored. But this time I am having a hard time understanding why no-one uses face weighted normals, it isn't something terribly new ID has been using it…
Farfarer has put together a script that does this for Modo users! I've been using it for a few days now and it works really nicely! http://forums.luxology.com/topic.aspx?mode=Unread&f=83&t=76447#NewPost
Amisima pointed out this script for 3ds that a member of Cgtalk Lehm2000 posted a few months ago in this thread. Your mesh has to either be an editable poly or have an edit poly modifier as the last stack.
Yeah reading the link in the original post, that's exactly what it does. Literally multiply vertex normal contribution by surface area of the face it belongs to. If anyone knows of a maya script / plugin that could do this, I would be eternally grateful.
You would need a script. Maya's normal editing tools are fairly lacking. The best you could do with built in tools is select the vertex normals and swivel them to point the direction you want, manually.