<p dir="ltr">While "Examine" with and without "lookat" covers the object at center case, there is no mode which covers the looking around case. "Walk" or "Fly" usually mean looking in the direction of movement.<br>
So I think it would make sense to add a type 'Lookaround" which means that the camera can only change orientation not position. This is the typical cardboard VR mode.</p>
<p dir="ltr">There is another mode which is sometimes called mouselook or tank mode. In it looking is independent from moving and typically requires two input devices: keyboard and mouse, or mouse and orientation sensor.</p>
<p dir="ltr">Finally, x3dom has a popular turntable mode which could be included in the spec.</p>
<p dir="ltr">Andreas</p>
<div class="gmail_quote">On Apr 6, 2016 3:00 PM, <<a href="mailto:x3d-public-request@web3d.org">x3d-public-request@web3d.org</a>> wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send x3d-public mailing list submissions to<br>
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Today's Topics:<br>
<br>
1. Mobile Responsive Navigation (Leonard Daly)<br>
2. Stereographic Displays (Leonard Daly)<br>
3. WebVR Community Group (Don Brutzman)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Wed, 6 Apr 2016 10:03:22 -0700<br>
From: Leonard Daly <<a href="mailto:web3d@realism.com">web3d@realism.com</a>><br>
To: X3D Graphics public mailing list <<a href="mailto:x3d-public@web3d.org">x3d-public@web3d.org</a>>,<br>
"<a href="mailto:x3dom-users@lists.sourceforge.net">x3dom-users@lists.sourceforge.net</a>"<br>
<<a href="mailto:x3dom-users@lists.sourceforge.net">x3dom-users@lists.sourceforge.net</a>><br>
Subject: [x3d-public] Mobile Responsive Navigation<br>
Message-ID: <<a href="mailto:5705415A.60407@realism.com">5705415A.60407@realism.com</a>><br>
Content-Type: text/plain; charset="utf-8"; Format="flowed"<br>
<br>
Mobile devices have built-in motion detectors. These can be accessed<br>
from JavaScript within a browser and used to control the viewing of a<br>
scene. I have documented one way at<br>
<a href="http://realism.com/blog/tracking-device-motion" rel="noreferrer" target="_blank">http://realism.com/blog/tracking-device-motion</a>. This is a mechanism that<br>
exists external from X3DOM, but is tightly couples to the browser<br>
(access to the motion detectors) and X3DOM (for controlling the viewing).<br>
<br>
I feel that this capability is important to include directly in X3D V4.<br>
This is a means of navigation, so my initial thought would be that this<br>
would be an addition to the NavigationInfo node. There are two types of<br>
this kind of navigation -- looking at an object (point in space) where<br>
device motion is on a sphere with the object at the center; and looking<br>
around where the device motion is at a fixed point and can orient to any<br>
angle. In both of these cases, there is a fixed (non-translated) point<br>
-- either the object, or the initial camera XYZ position.<br>
<br>
The 'type' field already as a "LOOKAT". In fact the spec document<br>
(<a href="http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/navigation.html#NavigationInfo" rel="noreferrer" target="_blank">http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/navigation.html#NavigationInfo</a>)<br>
specifically describes how to navigate about an object in this manner<br>
using '"LOOKAT" "EXAMINE"'. For this case, perhaps all that is needed is<br>
to take (or at least allow) navigation control to come from the device.<br>
Something like a new field "SFBool [in,out] navigationSensor FALSE".<br>
<br>
Comments?<br>
<br>
<br>
--<br>
*Leonard Daly*<br>
X3D Co-Chair<br>
Cloud Consultant<br>
President, Daly Realism - /Creating the Future/<br>
<br>
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Message: 2<br>
Date: Wed, 6 Apr 2016 10:03:37 -0700<br>
From: Leonard Daly <<a href="mailto:web3d@realism.com">web3d@realism.com</a>><br>
To: X3D Graphics public mailing list <<a href="mailto:x3d-public@web3d.org">x3d-public@web3d.org</a>>,<br>
"<a href="mailto:x3dom-users@lists.sourceforge.net">x3dom-users@lists.sourceforge.net</a>"<br>
<<a href="mailto:x3dom-users@lists.sourceforge.net">x3dom-users@lists.sourceforge.net</a>><br>
Subject: [x3d-public] Stereographic Displays<br>
Message-ID: <<a href="mailto:57054169.5070702@realism.com">57054169.5070702@realism.com</a>><br>
Content-Type: text/plain; charset="utf-8"; Format="flowed"<br>
<br>
This is related but not identical to my previous message "Mobile<br>
Responsive Navigation"<br>
<br>
Using shaders it is possible to construct a stereographic display so<br>
that a user can "see" in 3D. This can be assisted with tools such as<br>
Cardboard, Oculus, GearVR, or many other items. I wrote a blog post on<br>
this and how to create the various pieces at<br>
<a href="http://realism.com/blog/3d-google-cardboard" rel="noreferrer" target="_blank">http://realism.com/blog/3d-google-cardboard</a>. The code that does the<br>
stereographic display is fully X3D as expanded by X3DOM to support<br>
certain features.<br>
<br>
I feel that this capability is important to include directly in X3D V4.<br>
This is a means of viewing, so my initial thought would be that this<br>
would be an addition to the Viewpoint node. This method of generating<br>
stereographics does require changes to the scene graph, so it might be<br>
better to have a new node - StereoViewpont.<br>
<br>
The fields this nodes appears to require are:<br>
SFFloat [in,out] interpupillaryDistance 0.03<br>
<reference to scene or scene-fragment that is to be viewed in stereo><br>
<br>
There might be other fields (for example depth-of-field, zoom, etc.).<br>
For mobile devices it is also necessary to handle device motion, so<br>
whatever is defined needs to support mobile device tracking.<br>
<br>
<br>
Comments?<br>
<br>
--<br>
*Leonard Daly*<br>
X3D Co-Chair<br>
Cloud Consultant<br>
President, Daly Realism - /Creating the Future/<br>
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Message: 3<br>
Date: Wed, 6 Apr 2016 10:15:34 -0700<br>
From: Don Brutzman <<a href="mailto:brutzman@nps.edu">brutzman@nps.edu</a>><br>
To: X3D Graphics public mailing list <<a href="mailto:x3d-public@web3d.org">x3d-public@web3d.org</a>><br>
Subject: [x3d-public] WebVR Community Group<br>
Message-ID: <<a href="mailto:57054436.50904@nps.edu">57054436.50904@nps.edu</a>><br>
Content-Type: text/plain; charset="utf-8"; format=flowed<br>
<br>
Here is a potential W3C Community Group for X3D participation.<br>
<br>
<a href="https://www.w3.org/community/webvr" rel="noreferrer" target="_blank">https://www.w3.org/community/webvr</a><br>
==========================================<br>
> WebVR Community Group<br>
> Our goal is to help bring high-performance Virtual Reality to the open Web.<br>
><br>
> W3C note:<br>
> Community Groups are proposed and run by the community. Although W3C hosts these conversations, the groups do not necessarily represent the views of the W3C Membership or staff.<br>
==========================================<br>
<br>
p.s. another W3C Community Group that was active for a while, but appears to have been inactive since 2013:<br>
<br>
<a href="https://www.w3.org/community/declarative3d" rel="noreferrer" target="_blank">https://www.w3.org/community/declarative3d</a><br>
==========================================<br>
> Declarative 3D for the Web Architecture<br>
> The mission of the Declarative 3D for the Web Architecture Community Group is to determine the requirements, options, and use cases for an integration of interactive 3D graphics capabilities into the W3C technology stack. This group is aimed to extract core features out of the requirements as foundation to propose feasible technical solutions. These should cover the majority of 3D use cases for the Web - but not necessarily all of them. There are upcoming open (e.g., WebGL) and proprietary (e.g., Adobe) proposals for imperative graphics APIs in the Web context but we are missing an easy way to add interactive high-level declarative 3D objects to the HTML-DOM to allow anyone to easily create, share, and experience interactive 3D graphics - with possibly wide ranging effects similar to those caused by the broad availability of video on the Web. The goal of this CG is to evaluate the necessary requirements for a successful standardization of a declarative approach to interacti<br>
ve 3D g<br>
raphics as part of HTML documents.<br>
==========================================<br>
<br>
all the best, Don<br>
--<br>
Don Brutzman Naval Postgraduate School, Code USW/Br <a href="mailto:brutzman@nps.edu">brutzman@nps.edu</a><br>
Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA <a href="tel:%2B1.831.656.2149" value="+18316562149">+1.831.656.2149</a><br>
X3D graphics, virtual worlds, navy robotics <a href="http://faculty.nps.edu/brutzman" rel="noreferrer" target="_blank">http://faculty.nps.edu/brutzman</a><br>
<br>
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End of x3d-public Digest, Vol 85, Issue 14<br>
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</blockquote></div>