Filled in missing calcContactPatch() functionality for HertzCircular and HertzElliptical contact details.
Filled in missing calcContactPatch() functionality for HertzCircular and HertzElliptical contact details.

scamille/simbody,scamille/simbody,chrisdembia/simbody,robojukie/simbody,Gjacquenot/simbody,simbody/simbody,chrisdembia/simbody,elkingtonmcb/simbody,Gjacquenot/simbody,elkingtonmcb/simbody,robojukie/simbody,Gjacquenot/simbody,scamille/simbody,elkingtonmcb/simbody,chrisdembia/simbody,simbody/simbody,robojukie/simbody