<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Examining the source code for the 3.3 standard, it is apparent that the original character intended for Table 14.5 of the Volume component is the the left arrow,<div class=""><div class="">for which several representations are given at <a href="https://www.toptal.com/designers/htmlarrows/arrows/left-arrow/" class="">https://www.toptal.com/designers/htmlarrows/arrows/left-arrow/</a></div><div class=""><br class=""></div><div class="">It is unicode code point 0x2190</div><div class=""><br class=""></div><div class="">Vince Marchetti</div><div class=""><br class=""></div><div class=""><br class=""><div class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Sep 8, 2021, at 11:56 AM, <a href="mailto:vmarchetti@kshell.com" class="">vmarchetti@kshell.com</a> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">John<div class=""><br class=""></div><div class="">Good call on the git logs, but it's even simpler than that.</div><div class="">If you look at our published spec at <a href="https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/volume.html" class="">https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/volume.html</a></div><div class="">we can see that the intended symbol is a left-pointing-arrow. In the near future I will look at the source</div><div class="">to see what got corrupted.</div><div class=""><br class=""></div><div class="">Vince Marchetti</div><div class=""><br class=""></div><div class=""><br class=""><div class=""><div class=""><br class=""><blockquote type="cite" class=""><div class="">On Sep 8, 2021, at 10:28 AM, John Carlson <<a href="mailto:yottzumm@gmail.com" class="">yottzumm@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class=""><div dir="auto" class="">1) Would it be possible to go back in the git logs?</div><div dir="auto" class=""><br class=""></div><div dir="auto" class="">2) if the first 8-bits were 0xFF, what would the UTF-8 be? Assuming some random bit flip.</div></div><div class=""><div dir="auto" class=""><br class=""><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Wed, Sep 8, 2021 at 5:43 AM <a href="mailto:vmarchetti@kshell.com" target="_blank" class="">vmarchetti@kshell.com</a> <<a href="mailto:vmarchetti@kshell.com" target="_blank" class="">vmarchetti@kshell.com</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div style="word-wrap:break-word;line-break:after-white-space" class="">I examined file X3D/ISO-IEC19775/ISO-IEC19775-1/ISO-IEC19775-1v4.0/ISO-IEC19775-1v4-CD1/Part01/components/volume.html from github.<div class="">The xml header line declares the encoding of utf-8, as does the html meta tag, charset field</div><div class=""><br class=""><div class="">Line 904 is the first data row of table 41.5</div><div class=""><td>S ???? luminance (L)</td></div><div class="">where ???? denotes the garbled bytes.</div><div class=""><br class=""></div><div class="">Examining a hex dump, the 4 bytes between the space following 'S' and the space preceding 'l' are:</div><div class="">0xEF 0xBF 0xBD 0x3F</div><div class=""><br class=""></div><div class="">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.</div><div class="">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</div><div class="">the final byte, 3F, is the question mark in ascii.</div><div class=""><br class=""></div><div class="">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.</div><div class=""><br class=""></div><div class="">Vince Marchetti</div></div></div><div style="word-wrap:break-word;line-break:after-white-space" class=""><div class=""><div class=""><br class=""><div class=""><br class=""></div><div class=""><br class=""><blockquote type="cite" class=""><div class="">On Sep 7, 2021, at 10:07 PM, Brutzman, Donald (Don) (CIV) <<a href="mailto:brutzman@nps.edu" target="_blank" class="">brutzman@nps.edu</a>> wrote:</div><br class=""><div class=""><div style="font-family:Monaco;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none" class=""><div style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif" class="">For Mantis<span style="font-family:Calibri,sans-serif" class=""> </span><span style="font-size:10pt;font-family:Verdana,sans-serif;background-color:rgb(243,243,243)" class="">899</span>, hoping someone can discern correct values for garbled characters in</div><div style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif" class=""><u style="font-family:Calibri,sans-serif" class=""></u> <u style="font-family:Calibri,sans-serif" class=""></u></div><ul type="disc" style="margin-bottom:0in;margin-top:0in;font-family:Monaco" class=""><li style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif" class=""><a href="https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/volume.html#t-transferFunctionTextureCoordinateMapping" style="text-decoration:underline;font-family:Calibri,sans-serif;color:blue" target="_blank" class="">https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/volume.html#t-transferFunctionTextureCoordinateMapping</a></li><li style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif" class="">Table 41.5 — Transfer function mapping from texture type to texture coordinate</li></ul><div style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif" class=""><u style="font-family:Calibri,sans-serif" class=""></u> <u style="font-family:Calibri,sans-serif" class=""></u></div><div style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif" class="">Am thinking they might be quite simple, mdash or hyphen perhaps…</div><div style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif" class=""><u style="font-family:Calibri,sans-serif" class=""></u> <u style="font-family:Calibri,sans-serif" class=""></u></div><div style="margin:0in;font-size:11pt;font-family:Calibri,sans-serif" class="">all the best, Don<br class=""><span style="font-family:"Courier New"" class="">--<span style="font-family:"Courier New"" class=""> </span><br class="">Don Brutzman Naval Postgraduate School, Code USW/Br <span style="font-family:"Courier New"" class=""> </span><a href="mailto:brutzman@nps.edu" style="text-decoration:underline;font-family:"Courier New";color:blue" target="_blank" class="">brutzman@nps.edu</a><br class="">Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149<br class="">X3D 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