<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="">Dick<div class=""><br class=""></div><div class="">At this time I am about 66% confident that the figure I sent on Aug 27 is correct.</div><div class=""><br class=""></div><div class="">-- for the figure, as in the original, ignore the 2 cross sections on the left that have no relevance to handedness.</div><div class=""><br class=""></div><div class="">The original figure, with it's assignment of coordinates (1 0 0) as a point on the S axis, and (0 1 0) as a point on the T axis ; and the text</div><div class="">which considers (s t r ) as being a coordinate tuple, it appears the intent is the S T R can be considered renaming of X Y Z axes:</div><div class=""><br class=""></div><div class="">X --> S</div><div class="">Y --> T</div><div class="">Z --> R</div><div class=""><br class=""></div><div class="">If I cross out the S T R labels from the figure , and scribble in X Y Z accordingly, the figure I drew appears right handed.</div><div class=""><br class=""></div><div class="">Another way to "look" : If S T R is intended to be a right-handed system. then , by cyclic rearrangement of axes, so is T-R-S and viewed in this order, the figure I submitted (still) looks right-handed.</div><div class=""><br class=""></div><div class="">Vince</div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Aug 30, 2021, at 12:09 PM, <<a href="mailto:puk@igraphics.com" class="">puk@igraphics.com</a>> <<a href="mailto:puk@igraphics.com" class="">puk@igraphics.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); 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; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Hi –<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">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.<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><ul type="disc" style="margin-bottom: 0in; margin-top: 0in;" class=""><li class="MsoListParagraph" style="margin: 0in 0in 0.0001pt -12.75pt; font-size: 11pt; font-family: Calibri, sans-serif;">Dick<o:p class=""></o:p></li></ul><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">/******************************************<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">| Richard F. Puk, Ph.D., President<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">| Intelligraphics Incorporated<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">| 7644 Cortina Court<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">| Carlsbad, CA 92009-8206<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">| Tel: +1-760-753-9027 Mobile: +1-760-809-9027<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">| Email: <span class="Apple-converted-space"> </span><a href="mailto:puk@igraphics.com" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="color: rgb(5, 99, 193);" class="">puk@igraphics.com</span></a><o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">\******************************************<span class="Apple-converted-space"> </span><o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><div style="border-style: solid none none; border-top-width: 1pt; border-top-color: rgb(225, 225, 225); padding: 3pt 0in 0in;" class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><b class="">From:</b><span class="Apple-converted-space"> </span>Brutzman, Donald (Don) (CIV) <<a href="mailto:brutzman@nps.edu" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">brutzman@nps.edu</a>><span class="Apple-converted-space"> </span><br class=""><b class="">Sent:</b><span class="Apple-converted-space"> </span>Sunday, August 29, 2021 11:50 PM<br class=""><b class="">To:</b><span class="Apple-converted-space"> </span><a href="mailto:vmarchetti@kshell.com" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">vmarchetti@kshell.com</a>; Richard F. Puk <<a href="mailto:puk@igraphics.com" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">puk@igraphics.com</a>>; 'Nicholas Polys' <<a href="mailto:npolys@vt.edu" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">npolys@vt.edu</a>><br class=""><b class="">Cc:</b><span class="Apple-converted-space"> </span>John Carlson <<a href="mailto:x3d-public@web3d.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">x3d-public@web3d.org</a>><br class=""><b class="">Subject:</b><span class="Apple-converted-space"> </span>RE: [x3d-public] Spec problem with 3D texture axes: wrong-handed coordinate system<o:p class=""></o:p></div></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Looks outstanding to me, we will review. Thanks Vince.<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">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.<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">all the best, Don<br class=""><span style="font-family: "Courier New";" class="">--<span class="Apple-converted-space"> </span><br class="">Don Brutzman Naval Postgraduate School, Code USW/Br <span class="Apple-converted-space"> </span><a href="mailto:brutzman@nps.edu" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">brutzman@nps.edu</a><br class="">Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149<br class="">X3D graphics, virtual worlds, navy robotics<span class="Apple-converted-space"> </span></span><a href="http://faculty.nps.edu/brutzman" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="font-family: "Courier New";" class="">http://faculty.nps.edu/brutzman</span></a><o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="border-style: solid none none; border-top-width: 1pt; border-top-color: rgb(225, 225, 225); padding: 3pt 0in 0in;" class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><b class="">From:<span class="Apple-converted-space"> </span></b><a href="mailto:vmarchetti@kshell.com" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">vmarchetti@kshell.com</a><br class=""><b class="">Sent:<span class="Apple-converted-space"> </span></b>Saturday, August 28, 2021 8:04 AM<br class=""><b class="">To:<span class="Apple-converted-space"> </span></b><a href="mailto:x3d-public@web3d.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">X3D-Public</a><br class=""><b class="">Subject:<span class="Apple-converted-space"> </span></b>Re: [x3d-public] Spec problem with 3D texture axes: wrong-handed coordinate system<o:p class=""></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Attached is a revised Figure 33.1 for the X3D V4 specification under review.<o:p class=""></o:p></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">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 <a href="https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/texture3D.html#f-3DTexture" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/texture3D.html</a><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Vince Marchetti<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span id="cid:image001.png@01D79D8F.700DB670"><image001.png></span><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p class=""> </o:p></p><blockquote style="margin-top: 5pt; margin-bottom: 5pt;" class="" type="cite"><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">On Aug 27, 2021, at 9:58 PM,<span class="Apple-converted-space"> </span><a href="mailto:vmarchetti@kshell.com" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">vmarchetti@kshell.com</a><span class="Apple-converted-space"> </span>wrote:<o:p class=""></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Upon evaluation, this figure attached to the Aug 27 email is inconsistent with the specification text Section 33.2.3<o:p class=""></o:p></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">A corrected figure is forthcoming.<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Vince Marchetti<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p class=""> </o:p></p><blockquote style="margin-top: 5pt; margin-bottom: 5pt;" class="" type="cite"><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">On Aug 27, 2021, at 3:54 PM,<span class="Apple-converted-space"> </span><a href="mailto:vmarchetti@kshell.com" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">vmarchetti@kshell.com</a><span class="Apple-converted-space"> </span>wrote:<o:p class=""></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Please evaluate whether attached figure meets needs of X3DV4 specification document<o:p class=""></o:p></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">SVG (via Inkscape) format available upon request<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Vince Marchetti<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><x3dV4_Fig33_1.png><o:p class=""></o:p></div><div class=""><p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p class=""> </o:p></p><blockquote style="margin-top: 5pt; margin-bottom: 5pt;" class="" type="cite"><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">On Aug 27, 2021, at 1:47 PM, Brutzman, Donald (Don) (CIV) <<a href="mailto:brutzman@nps.edu" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">brutzman@nps.edu</a>> wrote:<o:p class=""></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">As noted in Mantis 978,<span class="apple-converted-space"> </span><a href="https://www.web3d.org/member-only/mantis/view.php?id=978" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">https://www.web3d.org/member-only/mantis/view.php?id=978</a><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">The following figure shows a left-handed coordinate system.<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><a href="https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/texture3D.html#f-3DTexture" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/texture3D.html#f-3DTexture</a><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><54CB4E59BAA24518B7648236A2468E3C.png><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">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?<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Any volunteers to do this (pretty please) to improve X3D4 specification?<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">all the best, Don<br class=""><span style="font-family: "Courier New";" class="">--<span class="apple-converted-space"> </span><br class="">Don Brutzman Naval Postgraduate School, Code USW/Br <span class="apple-converted-space"> </span></span><a href="mailto:brutzman@nps.edu" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="font-family: "Courier New";" class="">brutzman@nps.edu</span></a><span style="font-family: "Courier New";" class=""><br class="">Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149<br class="">X3D graphics, virtual worlds, navy robotics<span class="apple-converted-space"> </span></span><a href="http://faculty.nps.edu/brutzman" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="font-family: "Courier New";" class="">http://faculty.nps.edu/brutzman</span></a><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 9pt; font-family: Monaco;" class="">_______________________________________________<br class="">x3d-public mailing list<br class=""></span><a href="mailto:x3d-public@web3d.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="font-size: 9pt; font-family: Monaco;" class="">x3d-public@web3d.org</span></a><span style="font-size: 9pt; font-family: Monaco;" class=""><br class=""></span><a href="http://web3d.org/mailman/listinfo/x3d-public_web3d.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="font-size: 9pt; font-family: Monaco;" class="">http://web3d.org/mailman/listinfo/x3d-public_web3d.org</span></a><o:p class=""></o:p></div></div></blockquote></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">_______________________________________________<br class="">x3d-public mailing list<br class=""><a href="mailto:x3d-public@web3d.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">x3d-public@web3d.org</a><br class=""><a href="http://web3d.org/mailman/listinfo/x3d-public_web3d.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">http://web3d.org/mailman/listinfo/x3d-public_web3d.org</a><o:p class=""></o:p></div></div></blockquote></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">_______________________________________________<br class="">x3d-public mailing list<br class=""><a href="mailto:x3d-public@web3d.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">x3d-public@web3d.org</a><br class=""><a href="http://web3d.org/mailman/listinfo/x3d-public_web3d.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">http://web3d.org/mailman/listinfo/x3d-public_web3d.org</a></div></div></blockquote></div></div></div></div></blockquote></div><br class=""></div></body></html>