[x3d-public] Spec problem with 3D texture axes: wrong-handed coordinate system

[John Carlson]

Thanks for your confidence in me.   I have mostly focus on 2D textures.  I
don’t know if handed-ness goes R,S,T or S,T,R.   The document indicates the
latter.   The numerical tuples indicate how to handle the non-alphabetical
order, but either way is left-handed, afaict.

I’ll try to get to mantis this evening.

What might help is labeling the 2D squares with R values?

Bbiab.

On Fri, Aug 27, 2021 at 12:48 PM Brutzman, Donald (Don) (CIV) <
brutzman at nps.edu> wrote:

> As noted in Mantis 978,
> https://www.web3d.org/member-only/mantis/view.php?id=978
>
> The following figure shows a left-handed coordinate system.
>
>
>
>
> https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/texture3D.html#f-3DTexture
>
>
>
>
>
> Wondering how to fix – swap 2 axes can work.  Perhaps there is a commonly
> used diagram in OpenGL (or elsewhere) we might adopt and adapt?
>
>
>
> Any volunteers to do this (pretty please) to improve X3D4 specification?
>
>
>
> all the best, Don
>
>
> --
> Don Brutzman  Naval Postgraduate School, Code USW/Br
> brutzman at nps.edu
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
> X3D graphics, virtual worlds, navy robotics
> http://faculty.nps.edu/brutzman
>
>
> _______________________________________________
> x3d-public mailing list
> x3d-public at web3d.org
> http://web3d.org/mailman/listinfo/x3d-public_web3d.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://web3d.org/pipermail/x3d-public_web3d.org/attachments/20210827/8b3f99c0/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 54CB4E59BAA24518B7648236A2468E3C.png
Type: image/png
Size: 34695 bytes
Desc: not available
URL: <http://web3d.org/pipermail/x3d-public_web3d.org/attachments/20210827/8b3f99c0/attachment-0001.png>