[x3d-public] Stereographic Displays

Andreas Plesch andreasplesch at gmail.com
Thu Apr 7 10:23:16 PDT 2016


http://zach.in.tu-clausthal.de/teaching/vr_literatur/dont_be_a_wimp_notes.pdf

covers a lot of ground including the InstantReality way of describing
engines for quadbuffered active, red-blue, passive, and side-by-side stereo.

Andreas



On Thu, Apr 7, 2016 at 1:05 PM, Andreas Plesch <andreasplesch at gmail.com>
wrote:

> Avalon has view modifiers:
>
> http://doc.instantreality.org/documentation/nodetype/StereoViewModifier/
>
> which are applied to a view area which is a portion of the render window
> and defined in an Engine component:
>
> http://doc.instantreality.org/documentation/component/Engine/
>
> The Engine component deals with scene independant configuration.
>
> A view area is linked to Viewpoints in the scene.
>
> What is there to learn from this approach ? Decoupling of render mode from
> scene content ?
>
> Not sure, just wanted to share.
>
> -Andreas
>
> Date: Wed, 6 Apr 2016 10:03:37 -0700
>> From: Leonard Daly <web3d at realism.com>
>> To: X3D Graphics public mailing list <x3d-public at web3d.org>,
>>         "x3dom-users at lists.sourceforge.net"
>>         <x3dom-users at lists.sourceforge.net>
>> Subject: [x3d-public] Stereographic Displays
>> Message-ID: <57054169.5070702 at realism.com>
>> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>>
>> This is related but not identical to my previous message "Mobile
>> Responsive Navigation"
>>
>> Using shaders it is possible to construct a stereographic display so
>> that a user can "see" in 3D. This can be assisted with tools such as
>> Cardboard, Oculus, GearVR, or many other items. I wrote a blog post on
>> this and how to create the various pieces at
>> http://realism.com/blog/3d-google-cardboard. The code that does the
>> stereographic display is fully X3D as expanded by X3DOM to support
>> certain features.
>>
>> I feel that this capability is important to include directly in X3D V4.
>> This is a means of viewing, so my initial thought would be that this
>> would be an addition to the Viewpoint node. This method of generating
>> stereographics does require changes to the scene graph, so it might be
>> better to have a new node - StereoViewpont.
>>
>> The fields this nodes appears to require are:
>>    SFFloat [in,out] interpupillaryDistance 0.03
>>    <reference to scene or scene-fragment that is to be viewed in stereo>
>>
>> There might be other fields (for example depth-of-field, zoom, etc.).
>> For mobile devices it is also necessary to handle device motion, so
>> whatever is defined needs to support mobile device tracking.
>>
>>
>> Comments?
>>
>> --
>> *Leonard Daly*
>> X3D Co-Chair
>> Cloud Consultant
>> President, Daly Realism - /Creating the Future/
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>


-- 
Andreas Plesch
39 Barbara Rd.
Waltham, MA 02453
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