Hello,

XML3D models are stored in XML files or JSON files that are referenced
by the node you are using to represent your model in your scene.

If your XML3D model is readily defined asset, you can instantiate it
using a <model> tag:

<model src="/path/to/asset/asset.xml#assetID">

If the model contains mesh data (vertices, normals, etc ...), you can
add it to your scene as a mesh:

<mesh src="/path/to/mesh/mesh_data.json">

Usually, your model would be an asset as in the first case. Please refer
to the Open Specification, or to the guides in the elearning platform
for a more detailed description and usage of the different nodes

This referenced data, asset or mesh data, needs to be located on an HTTP
server, and is requested by XML3D via AJAX requests.

When you deploy XML3D via FILAB-Recipe or preconfigured Instance in
FILAB, then there is already an Apache server running that hosts the
current script file as well as a set of examples. You can use this
server to store and host your models. The GE does currently not offer a
graphic user interface to upload models directly in the browser, but
this feature is considered to be added to the GE instance hosted in the lab.

Currently, a way to get asset data to the server, would be to upload the
assets to the server manually using SSH , or scp respectively. The root
path of the running Apache server is /var/www/html .

Adding a reference to an XML3D model in JavaScript can simply be done by
creating the <model> node and setting the src of the model
programmatically before adding it as child of the <xml3d> node, e.g.:

var m = XML3D.createElement("model");
m.src = "/reference/to/asset.xml";
$("xml3d").append(m); // or appending it to some node within the XML3D
scene graph

Best,
Torsten

–
Torsten Spieldenner, M.Sc.

Tel.: +49 6 81 / 8 57 75 - 77 48
Fax.: +49 6 81 / 8 57 75 - 22 35

Internet: http://www.dfki.de/web/forschung/asr/

-------------------------------------------------------------
Deutsches Forschungszentrum fuer Kuenstliche Intelligenz GmbH
Trippstadter Strasse 122, D-67663 Kaiserslautern, Germany

Geschaeftsfuehrung:
Prof. Dr. Dr. h.c. mult. Wolfgang Wahlster (Vorsitzender)
Dr. Walter Olthoff

Vorsitzender des Aufsichtsrats:
Prof. Dr. h.c. Hans A. Aukes

Amtsgericht Kaiserslautern, HRB 2313
-------------------------------------------------------------

Hi Torsten,

thanks for your reply.

I know the mechanisms to include assets (XML or JSON) into an XML3D scene.
I also have already JavaScript code to load local models with XML3D.
So I am not interested in the XML3D details right now.
My question has a different focus:

What I would like to know is if there are mechanisms to store or load
objects to/from a Fiware Cloud (using the Object Storage GE I guess...)
using JavaScript.

What I have in mind is:

• I call a JS function that sends/retrieves objects to/from the cloud. Does
  this JS code exist?? Is it part of the Object Storage GE?

• Then, I can hopefully refer this cloud object with an URL and use this
  URL in my <model> tag. Would I be able to do that?

Thanks in advance.

2015-06-16 11:45 GMT+02:00 Torsten Spieldenner <torsten.spieldenner@dfki.de>

Hi,

sorry, seems I was a bit too much focused on 3D-UI GE when thinking
about possible upload mechanisms

Unfortunately, I cannot help much concerning interfaces to other GE. You
might want to try contacting the GE owners of the respective GE.

From 3D-UI-XML3D point of view, the only thing that the storage has to
offer is to query content via HTTP and by specifying a URI to the target
resource, exactly as you also require. As the GE usually provide access
via REST (and as far as I understood from Object Storage, this one as
well), this should basically not be a problem. But the owners of the
respective GE, e.g. Object Storage, will possibly be able to help with
more qualified support there.

As a solution specific for 3D models, we are currently working on a
release of an Asset Storage service to be deployed within FIWARE
applications. This service matches exactly your requirements, namely
uploading 3D models and requesting them via URI. The software is still
facing the process to be released and we cannot fix a certain date when
it will be available, but it will be a matter of possibly not more than
a few weeks.

Best Regards,
Torsten

–
Torsten Spieldenner, M.Sc.

Tel.: +49 6 81 / 8 57 75 - 77 48
Fax.: +49 6 81 / 8 57 75 - 22 35

Internet: http://www.dfki.de/web/forschung/asr/

-------------------------------------------------------------
Deutsches Forschungszentrum fuer Kuenstliche Intelligenz GmbH
Trippstadter Strasse 122, D-67663 Kaiserslautern, Germany

Geschaeftsfuehrung:
Prof. Dr. Dr. h.c. mult. Wolfgang Wahlster (Vorsitzender)
Dr. Walter Olthoff

Vorsitzender des Aufsichtsrats:
Prof. Dr. h.c. Hans A. Aukes

Amtsgericht Kaiserslautern, HRB 2313
-------------------------------------------------------------

Hi,

Sorry for the late reply.

I am not sure I fully understand you question. XML3D is a client side
technology that runs within the Web browser (after having been
downloaded from a Web server, of course).

You find a demo hat you can Try out, interactively Tweak the Web app
code and share it with others, as well as deploy a version (Web server
plus files in this case) to a FIWARE machine with your FIWARE account at
http://lab.mediafi.org (a part of the FIWARE program) – use the 3D-Map
Tiles Enabler.

A direct link is http://lab.mediafi.org/discover-3dmaptiles.html

Best,

Philipp

–

-------------------------------------------------------------------------
Deutsches Forschungszentrum für Künstliche Intelligenz (DFKI) GmbH
Trippstadter Strasse 122, D-67663 Kaiserslautern

Geschäftsführung:
Prof. Dr. Dr. h.c. mult. Wolfgang Wahlster (Vorsitzender)
Dr. Walter Olthoff
Vorsitzender des Aufsichtsrats:
Prof. Dr. h.c. Hans A. Aukes

Sitz der Gesellschaft: Kaiserslautern (HRB 2313)
USt-Id.Nr.: DE 148646973, Steuernummer: 19/673/0060/3
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