hyperbola hyperbola 0 0 0 30 10 revsurf rs_hyperbola hyperbola 0 400 0 1 0 0 offset rs_hyperbola_of rs_hyperbola 5 mkface result rs_hyperbola_of .3 .5 .3 .5 set MaxFTol 9.9999999999999995e-08 set MaxETol 4.8054451347385554e-07 set MaxVTol 4.8054451347385575e-07