[x3d-public] illegal characters in X3D Architecture Table 41.5

[John Carlson]

1) Would it be possible to go back in the git logs?

2) if the first 8-bits were 0xFF, what would the UTF-8 be?  Assuming some
random bit flip.

On Wed, Sep 8, 2021 at 5:43 AM vmarchetti at kshell.com <vmarchetti at kshell.com>
wrote:

> I examined   file
> X3D/ISO-IEC19775/ISO-IEC19775-1/ISO-IEC19775-1v4.0/ISO-IEC19775-1v4-CD1/Part01/components/volume.html
> from github.
> The xml header line declares the encoding of utf-8, as does the html meta
> tag, charset field
>
> Line 904 is the first data row of table 41.5
> <td>S ???? luminance (L)</td>
> where ???? denotes the garbled bytes.
>
> Examining a hex dump, the 4 bytes between the space following 'S' and the
> space preceding 'l' are:
> 0xEF 0xBF 0xBD 0x3F
>
> 0xEF is a byte used in byte-order-marks in different encodings, but it is
> incorrect to have it in the middle of a file.
> I have tried without success to decode these 4 bytes and portions of this
> byte-list in utf-8 and utf-16 ; the only success is that
> the final byte, 3F, is the question mark in ascii.
>
> I propose the way forward is to decide what character we want to put in
> these table rows , and a dash would be fine, and make the edit.
>
> Vince Marchetti
>
>
>
> On Sep 7, 2021, at 10:07 PM, Brutzman, Donald (Don) (CIV) <
> brutzman at nps.edu> wrote:
>
> For Mantis 899, hoping someone can discern correct values for garbled
> characters in
>
>
>    -
>    https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/volume.html#t-transferFunctionTextureCoordinateMapping
>    - Table 41.5 — Transfer function mapping from texture type to texture
>    coordinate
>
>
> Am thinking they might be quite simple, mdash or hyphen perhaps…
>
> 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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