I am a hobby artist and recently I started to wonder if the body posture of a T-Rex could be rectified with help of a 3D software like ZBrush. I notice in a lot of illustrations a front heavy posture, that in my opinion may not be possible due to mass distribution of head, chest and tail. Is there a way to find the center of mass or volume of a given mesh? I don’t pretend to take into account bones and stuff, but only to approximate the center of mass or volume distribution of a mesh, in this case a biped dinosaur.
ZBrush provides mesh volume through the 3D Print Hub plugin but not the center of mass. Autodesk Meshmixer (free) does have though, under Analysis>Stability. Your model probably needs to be a closed volume.
Meshmixer seems really useful for finding the center. Thank you very much for the tip. Now I have to figure out how to make meshes watertight.
Well, one way is to use Tool>Geometry>Modify Topology>Close Holes.
I couldn’t find the mentioned feature “close holes”. Instead I found EDIT->Make Solid. Once again a big thumbs up for guiding me to this software. Greeting from Guatemala.
I was talking about ZBrush. 
