Choreoh.Global.checkPush C# (CSharp) Method

        private static void checkPush(LinkedList<Skeleton> moves)
        {
            if (!canGesture)
                return;
            Joint prevJoint = new Joint();
            Joint firstJoint = moves.First<Skeleton>().Joints[JointType.HandLeft];
            Joint lastJoint = moves.Last<Skeleton>().Joints[JointType.HandLeft];
            foreach (Skeleton skeleton in moves)
            {
                Joint joint = skeleton.Joints[JointType.HandLeft];
                //Checking if pushing
                if (prevJoint.Position.Z == 0.0)
                {
                    prevJoint = joint;
                    continue;
                }
                if (prevJoint.Position.Z > joint.Position.Z)
                {
                    prevJoint = joint;
                    continue;
                }
                return;
            }
            if ((Math.Abs(lastJoint.Position.Z - firstJoint.Position.Z) > .15) &&
                Math.Abs(lastJoint.Position.X - firstJoint.Position.X) < .18 &&
                Math.Abs(lastJoint.Position.Y - firstJoint.Position.Y) < .18)
            {
                canGesture = false;
                lastGesture = "Pushed";
                pushed = true;
                canGestureTimer.Start();
            }
        }