[x3d-public] both X3DOM and X_ITE.

[John Carlson]

Nope, can’t use Cesium Man.

John

Sent from Mail for Windows 10

From: John Carlson
Sent: Monday, May 28, 2018 3:34 PM
To: Andreas Plesch
Subject: Re: both X3DOM and X_ITE.

I've already looked at direct translation from glTF to XML.   I will look into translations to HAnim.   Is Cesium man ok?

John

On Mon, May 28, 2018, 2:47 PM Andreas Plesch <andreasplesch at gmail.com> wrote:
There just does not seem a lot of demand or requests by users or
customers. Of course, this may be a chicken and egg problem.
Contributions to x3dom or x_ite are always welcome, in any case.

For x3dom, my interest would be probably the glTF angle. glTF has
character animation. Here is an example:
https://www.donmccurdy.com/2017/11/06/creating-animated-gltf-characters-with-mixamo-and-blender/

The best explanation, apart from studying glTF loaders, is apparently
in this figure, sorry about that:
https://raw.githubusercontent.com/KhronosGroup/glTF/master/specification/2.0/figures/gltfOverview-2.0.0a.png

There is probably a lot of overlap between glTF and HAnim and it would
be important to understand how both relate to each other to be able to
support both. I think Leonard tried to tackle this but focusing
specifically on glTF-HAnim may be constructive. For example, a
translation of a simple glTF character to an HAnim humanoid would be a
good first step.

A functional, minimal subset of HAnim of nodes and/or a Proto-based
implementation of the nodes would also help implementers.

A main challenge will be probably the requirement to have vertex
geometry manipulation in a shader on the GPU. This is done only for
displacement textures of a CommonSurfaceShader node currently in
x3dom.

-Andreas


On Mon, May 28, 2018 at 10:42 AM, Joseph D Williams
<joedwil at earthlink.net> wrote:
>> both X3DOM and X_ITE …
>
>
>
> The discussions about both X3DOM and X_ITE are, to me, missing a very
> important feature. Neither of these tools can do HAnim skeleton controlled
> deformable skin. This is a very important feature, lending itself to many
> important applications in addition to HAnim. There have been several
> discussions about the hanim joint(s) to deformable skin bindings and as far
> as I have seen, there is no doubt that the way x3d specifies the basic, most
> simple, and most transportable technique to achieve the result. So, as the
> HAnim standard takes the next step, why not move a bit toward implementing
> this important capability in your browsers. BSContact does it, I think
> Instant does it mostly but x3dom and x_ite don’t.
>
>
>
> Thanks and Best,
>
> Joe
>
>
>
>



-- 
Andreas Plesch
Waltham, MA 02453

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