.. |img-scaling| image:: imgs/icons/scaling.png
   :width: 30

.. |img-aportal| image:: imgs/icons/aportal.png
   :width: 30

.. |img-annot| image:: imgs/icons/annot.png
   :width: 30

.. |img-hmdhome| image:: imgs/icons/hmdhome.png
   :width: 30

.. |img-explo| image:: imgs/icons/explo.png
   :width: 30

.. |img-xray| image:: imgs/icons/xrayhmd.png
   :width: 30

.. |img-ani| image:: imgs/icons/anima.png
   :width: 30

.. |img-11| image:: imgs/icons/1-1.png
   :width: 30

.. |img-background| image:: imgs/icons/background.png
   :width: 30

.. |img-slicer| image:: imgs/icons/slicer.png
   :width: 30


Features
=============

This article lists available functionality and :ref:`hmdlimitations` when using EON-XR on :term:`head-mounted device (HMD) <HMD>`. 

With EON-XR on HMD you can explore Xperiences in immersive 3D using the :ref:`vrmenu` and :doc:`/HMD/controllers`.

.. note:: EON-XR on HMD is only accessible in **Play mode**. To edit or create Xperiences, start EON-XR on mobile device or desktop.

.. note:: You can use :ref:`otp` to sign-in to EON-XR on HMD, and optionally, change between your institutes.

.. _vrmenu:

VR menu
^^^^^^^

In the VR menu you can access the following options:

* |img-scaling| **Scaling** : show or hide the scaling pane to resize the 3D object

* |img-aportal| **Activity portal** : show or hide activity portal

* |img-annot| **Annotations** : view descriptions and knowledge portals attached to object parts

* |img-hmdhome| **Home** : open the :ref:`home menu <hmdeonxrmenu>` 

* |img-explo| **Explode** : break apart the 3D object

* |img-xray| **X-Ray** : view the inner details of the 3D object

* |img-ani| **Animation** : play animations associated with the 3D object

* |img-11| **1:1 scale** : view the 3D object in real scale
   
.. note:: This option is only available if real scale is enabled for the object in the Asset editor.

* |img-background| **Background** : select the 3D environment background 

* |img-slicer| **Slicer** : show or hide the :ref:`slicer grid <slicer>`


.. figure:: imgs/hmdvrmenu.png
    :alt: menu icons

.. _hmdeonxrmenu:

Home menu
^^^^^^^^^^

In the home menu you can browse and select Xperiences available in your current institute.


.. figure:: imgs/eon-xrxperiencemenu.png
    :alt: EON-XR menu


.. _slicer:

Slicer grid
^^^^^^^^^^^

You can slice to explore the inside of the 3D object:

1. Point to the slicer grid

2. Press and hold **R3** to grab the slicer grid

.. hint:: Depending on your device, the placement of the **R3** button may vary.

3. Adjust slicer grid forward and backward to slice the object as desired

.. hint:: You can rotate and resize the 3D object to adjust how the object is sliced.

.. figure:: imgs/hmdslicing.png
    :alt: slicer grid

.. note:: The slicing function is only available for EON-XR on HMD.


.. _hmdlimitations:
    
Limitations
***********

* The hierarchy tree view is not visible, but you can traverse through the object hierarchy

* You cannot access your :doc:`workspace </Mobile/myWorkspace>`

* It is not possible to move the object up or down in the 3D environment