gistfile1.txt

    void Update()
    {
        if (controller.GetPressDown(Valve.VR.EVRButtonId.k_EButton_Grip) && pickUp != null)
        {
            var rb = pickUp.GetComponent<Rigidbody>();
            if (rb.isKinematic)
            {
                // this constraint will allow us to pull/push ourselves through the space.
                var rootGameObject = GetRoot(gameObject).gameObject;

                if (joint2 == null)
                    joint2 = rootGameObject.AddComponent<ConfigurableJoint>();
                joint2.connectedBody = null;
                joint2.anchor = transform.localPosition;
                grabPoint = transform.localPosition;
                grabOrientation = transform.localRotation;
                joint2.connectedAnchor = new Vector3(0, 0, 0);
                joint2.autoConfigureConnectedAnchor = false;
                joint2.configuredInWorldSpace = false;
                ConfigureJoint(rootGameObject.GetComponent<Rigidbody>().mass, true, joint2);
            }
            else
            {
                // this constraint will allow us to hold a free object.
                if (joint == null)
                    joint = gameObject.AddComponent<ConfigurableJoint>();

                joint.connectedBody = rb;
                ConfigureJoint(rb.mass, true, joint);
            }
        }

        if (joint2 != null)
        {
            joint2.targetPosition = transform.localPosition - grabPoint;
            joint2.targetRotation = transform.localRotation * Quaternion.Inverse(grabOrientation);
        }