<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Okay, indeed IndexedFaceSet was referenced before declared. I am not sure what to do about it. It hasn’t fouled up my processes yet. Please wait for further testing.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>John</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:brutzman@nps.edu">Brutzman, Donald (Don) (CIV)</a><br><b>Sent: </b>Saturday, September 29, 2018 3:55 PM<br><b>To: </b><a href="mailto:yottzumm@gmail.com">John Carlson</a><br><b>Cc: </b><a href="mailto:x3d@web3d.org">X3D Graphics Working Group</a>; <a href="mailto:x3d-public@web3d.org">X3D Graphics public mailing list</a><br><b>Subject: </b>Re: [x3d] X3DUOM and validation of dangling references?</p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On 9/29/2018 9:44 AM, John Carlson wrote:</p><p class=MsoNormal>> Hmm. It looks like some nodes may be referenced before they are declared? Not sure yet. I thought IFS was in all versions? I will have to check. Sorry for not checking it right away.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi John. I think the root cause was simply schema document maintenance for each version. I do diffs between each successive version 3.0 thru 4.0 to ensure consistent, these must have crept backwards from a future version. Since the errors were in our custom annotations, other strong-validation checks didn't find them.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Master list of all node and field versions is provided in X3D specification:</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> X3D Part 1: Architecture and base components, Annex Z, Version content</p><p class=MsoNormal> http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/versionContent.html</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>... which reveals that FogCoord and X3DVertexAttribute are both introduced in X3D v3.1, and so should not be referenced in X3D v3.0.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>No other versionitis problems found throughout all the schemas. As expected, no similar problems found in DTDs.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Your detecting this particular problem enabled me to (a) fix it, (b) confirm no other related dangling-reference errors were occurring, and (c) add further tests to ensure that it doesn't occur again.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Updates applied, changes checked into sourceforge version control, and results are being deployed now. Again thanks.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> X3D Specifications: Schema and DOCTYPE Validation</p><p class=MsoNormal> http://www.web3d.org/specifications</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>all the best, Don</p><p class=MsoNormal>-- </p><p class=MsoNormal>Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu</p><p class=MsoNormal>Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149</p><p class=MsoNormal>X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman</p><p class=MsoNormal><o:p> </o:p></p></div></body></html>