public BindablePoint3DModel RoundOff(double roundTo)
{
var v = new Point3D(Math.Round(_point.X / roundTo, 0, MidpointRounding.ToEven) * roundTo, Math.Round(_point.Y / roundTo, 0, MidpointRounding.ToEven) * roundTo, Math.Round(_point.Z / roundTo, 0, MidpointRounding.ToEven) * roundTo);
return new BindablePoint3DModel(v);
}