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

[John Carlson]

Dick,

I’m not sure if you’re looking at the one in the email or the one in the
(old) standard, following the link.

John

On Mon, Aug 30, 2021 at 11:10 AM <puk at igraphics.com> wrote:

> Hi –
>
>
>
> It still look left-handed to me :^( I suggest exchanging the S and T
> labels and coordinates leaving the R label and coordinates where they are.
>
>
>
>    - Dick
>
>
>
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> *From:* Brutzman, Donald (Don) (CIV) <brutzman at nps.edu>
> *Sent:* Sunday, August 29, 2021 11:50 PM
> *To:* vmarchetti at kshell.com; Richard F. Puk <puk at igraphics.com>;
> 'Nicholas Polys' <npolys at vt.edu>
> *Cc:* John Carlson <x3d-public at web3d.org>
> *Subject:* RE: [x3d-public] Spec problem with 3D texture axes:
> wrong-handed coordinate system
>
>
>
> Looks outstanding to me, we will review.  Thanks Vince.
>
>
>
> p.s. if you created an X3D model to produce this, am happy to check it
> into version control  We have a section in the X3D archives for
> specification figures.
>
>
>
> 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
>
>
>
> *From: *vmarchetti at kshell.com
> *Sent: *Saturday, August 28, 2021 8:04 AM
> *To: *X3D-Public <x3d-public at web3d.org>
> *Subject: *Re: [x3d-public] Spec problem with 3D texture axes:
> wrong-handed coordinate system
>
>
>
> Attached is a revised Figure 33.1 for the X3D V4 specification under
> review.
>
> This version of the figure was corrected to accurately match the
> description of the R S T coordinate axes as described in Sections 33.2.2
> and 33.2.3 of
> https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/texture3D.html
> <https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/texture3D.html#f-3DTexture>
>
>
>
> Vince Marchetti
>
>
>
>
>
>
>
> On Aug 27, 2021, at 9:58 PM, vmarchetti at kshell.com wrote:
>
>
>
> Upon evaluation, this figure attached to the Aug 27 email is inconsistent
> with the specification text Section 33.2.3
>
> A corrected figure is forthcoming.
>
>
>
> Vince Marchetti
>
>
>
>
>
> On Aug 27, 2021, at 3:54 PM, vmarchetti at kshell.com wrote:
>
>
>
> Please evaluate whether attached figure meets needs of X3DV4 specification
> document
>
>
>
> SVG (via Inkscape) format available upon request
>
>
>
> Vince Marchetti
>
>
>
>
>
> <x3dV4_Fig33_1.png>
>
>
>
> On Aug 27, 2021, at 1:47 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
>
>
>
> <54CB4E59BAA24518B7648236A2468E3C.png>
>
>
>
> 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
>
>
>
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