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<p>19777-{3,4,5} Examples source code from the standards are ready
to check in here, and will be checked into sourceforge:</p>
<p>x3d-code/www.web3d.org/x3d/languages/c/Examples<br>
x3d-code/www.web3d.org/x3d/languages/cpp/Examples<br>
x3d-code/www.web3d.org/x3d/languages/csharp/Examples</p>
<p>Note that we do not have up-to-date .h files as a separate
deliverable yet. The .h files are currently embedded in the
standard HTML.</p>
<p>I hope I explained myself well enough.</p>
<p>John<br>
</p>
<div class="moz-cite-prefix">On 8/26/21 4:30 PM, John Carlson wrote:<br>
</div>
<blockquote type="cite"
cite="mid:c1c30be7-8ee8-6bb8-e0dd-c63f11e4ea86@gmail.com">
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<p>Myeong,</p>
<p>Thanks for your efforts on the C/C#/C++ standards!</p>
<p>My understanding from Don is that we want the current WD
versions of the 19777-3, 19777-4 and 19777-5 standards checked
into GitHub, somewhere below this folder: <a
class="moz-txt-link-freetext"
href="https://github.com/Web3DConsortium/X3D"
moz-do-not-send="true">https://github.com/Web3DConsortium/X3D</a>
(If you need assistance, let me know, it's quite confusing.
We'll probably have to do things like rename the folders once
unpacked from the zips and move them from). Issues with the
standards should go into Mantis. Google Drive/Docs, while
important for private sharing, are not suitable for group
editing of standards. GitHub has adequate protections in the
X3D repository. With your permission, I will check your Google
shared zips into GitHub unpacked. Probably in the folders here
that you identify:</p>
<p>./ISO-IEC19777/ISO-IEC19777-4/ISO-IEC19777-4v3.3/ISO-IEC19777-4v3.3-WD<br>
./ISO-IEC19777/ISO-IEC19777-4/ISO-IEC19777-4v3.3/ISO-IEC19777-4v3.3-CD<br>
./ISO-IEC19777/ISO-IEC19777-3/ISO-IEC19777-3v3.3/ISO-IEC19777-3v3.3-CD<br>
./ISO-IEC19777/ISO-IEC19777-3/ISO-IEC19777-3v3.3/ISO-IEC19777-3v3.3-WD<br>
./ISO-IEC19777/ISO-IEC19777-5/ISO-IEC19777-5v3.3/ISO-IEC19777-5v3.3-CD<br>
./ISO-IEC19777/ISO-IEC19777-5/ISO-IEC19777-5v3.3/ISO-IEC19777-5v3.3-WD</p>
<p>( Please confirm that the WD folders are correct).</p>
<p>These are the original folders that where already there that
are moved out of the way.<br>
</p>
<p>./ISO-IEC19777-4/ISO-IEC19777-4v3.3/ISO-IEC19777-4v3.3-WD-original<br>
./ISO-IEC19777-3/ISO-IEC19777-3v3.3/ISO-IEC19777-3v3.3-WD-original<br>
./ISO-IEC19777-5/ISO-IEC19777-5v3.3/ISO-IEC19777-5v3.3-WD-original</p>
<p>I currently all these changes ready for a git add, commit,
push. I have done 1) ready and a little bit of aiming. I need
approval to fire.</p>
<p>I will enter a Mantis ticket for these changes.<br>
</p>
<p>===========================================================<br>
</p>
<p>Secondly, according to Don, we need to move discussions to the
x3d-public mailing list. If issues are sensitive, then there's
the x3d mailing list. Here's how to subscribe to x3d-public: <a
class="moz-txt-link-freetext"
href="http://www.web3d.org/mailman/listinfo/x3d-public_web3d.org"
moz-do-not-send="true">http://www.web3d.org/mailman/listinfo/x3d-public_web3d.org</a><br>
</p>
<p>Issues with source code artifacts should be can be recorded
here: <a class="moz-txt-link-freetext"
href="https://sourceforge.net/p/x3d/discussion/"
moz-do-not-send="true">https://sourceforge.net/p/x3d/discussion/</a></p>
<p>Source code artifacts should go here in addition:
<a class="moz-txt-link-freetext"
href="https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/languages/"
moz-do-not-send="true">https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/languages/</a>
I can facilitate uploads to there. Myeong, with your
permission, I will archive the old code (many months old) to
"legacy" under the main x3d-code folder.</p>
<p>If you have any open questions, please post to the x3d-public
list (respond to this email).</p>
<p>I don't believe source code changes require Mantis.<br>
</p>
<p>John<br>
</p>
<div class="moz-cite-prefix">On 8/26/21 9:34 AM, Brutzman, Donald
(Don) (CIV) wrote:<br>
</div>
<blockquote type="cite"
cite="mid:BY3PR13MB488445D63D5C4FEEAC0083B6C4C79@BY3PR13MB4884.namprd13.prod.outlook.com">
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<p class="MsoNormal">Again: it would be useful to have to have
a design page that discussed programming patterns and open
issues.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Again: GitHub is master version, being
aware that differences exist but are not identified isn’t
very useful.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Again: Hoping we can “get on the good
foot” in how this effort is pursued. This is how the Java,
JSON, Python and Turtle language bindings built towards
consensus and were all successfully accomplished.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks for all efforts, hopefully they
can become productive and fruitful by working deliberately
together.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">all the best, Don<br>
<span style="font-family:"Courier New"">-- <br>
Don Brutzman Naval Postgraduate School, Code USW/Br
<a class="moz-txt-link-abbreviated"
href="mailto:brutzman@nps.edu" moz-do-not-send="true">brutzman@nps.edu</a><br>
Watkins 270, MOVES Institute, Monterey CA 93943-5000
USA +1.831.656.2149<br>
X3D graphics, virtual worlds, navy robotics <a
href="http://faculty.nps.edu/brutzman"
moz-do-not-send="true"> http://faculty.nps.edu/brutzman</a></span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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style="mso-element:para-border-div;border:none;border-top:solid
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<p class="MsoNormal" style="border:none;padding:0in"><b>From:
</b><a href="mailto:yottzumm@gmail.com"
moz-do-not-send="true">John Carlson</a><br>
<b>Sent: </b>Friday, August 20, 2021 12:36 PM<br>
<b>To: </b><a href="mailto:brutzman@nps.edu"
moz-do-not-send="true">Brutzman, Donald (Don) (CIV)</a>;
<a href="mailto:x3d-public@web3d.org"
moz-do-not-send="true"> x3d-public@web3d.org</a>; <a
href="mailto:myeongwonlee@gmail.com"
moz-do-not-send="true">Myeong Won Lee</a>; <a
href="mailto:gpugroup@gmail.com" moz-do-not-send="true">GPU
Group</a><br>
<b>Subject: </b>Re: [x3d-public] X3D meeting minutes 20
AUG 2021, C C++ C# and Mantis MetadataDate</p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div style="border:solid #004679 1.0pt;padding:2.0pt 2.0pt
2.0pt 2.0pt">
<p class="MsoNormal"
style="line-height:12.0pt;background:#004679"><span
style="font-size:10.0pt;color:yellow">NPS WARNING:
*external sender* verify before acting.<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p>Don, Myeong, Doug,</p>
<p>I noticed that there are no virtual methods in the C++
spec SAI I got (examples, yes, except for ~SAIExample5())
on drive.google.com. I do not think they are necessary,
but may be useful when defining subclasses for people who
want to subclass from the SAI abstract and concrete
nodes. <a
href="https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.geeksforgeeks.org%2Fvirtual-function-cpp%2F&data=04%7C01%7Cbrutzman%40nps.edu%7C4e6ee194cc544357635908d964118d12%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C637650850010851004%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=EkRmxJLy9eZ1jjBqCZ%2FS99OiG9B9NcBGWff6ixidzNA%3D&reserved=0"
moz-do-not-send="true">
https://www.geeksforgeeks.org/virtual-function-cpp/</a>
Note that most methods are virtual in Java, without the
keyword. I think virtual methods are slower than regular
methods, last I heard. But I'm pretty sure all
destructors should be virtual? I've forgotten. Some
discussion whether destructors should be present in the
spec is welcome. The virtual destructor ensures that the
superclass destructor is not called.</p>
<p>I think it would be useful to have Doug Sanden review the
abstract and concrete class and structs before making big
decisions.</p>
<p>I am also unsure why the first parameter to many C
function pointer declarations is void* instead of passing
a pointer to a struct type?</p>
<p>In all cases, C/C++/C# it might be useful for setter
functions and members to return this or *this, instead of
void. We need set functions to return this for creating
builders I'm fairly sure. (In C SAI, the first parameter
is called this, it's not a keyword that I know of).</p>
<p>I'm glad I am reviewing this! We'll see if anything else
pops into my head after I send the message!</p>
<p>Thanks,</p>
<p>John</p>
<div>
<p class="MsoNormal">On 8/20/21 1:46 PM, Brutzman, Donald
(Don) (CIV) wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">Attendees John Carlson, Vince
Marchetti, Dick Puk, Don Brutzman<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:.25in;text-indent:-.25in;mso-list:l1
level1 lfo1">
<!--[if !supportLists]--><span style="mso-list:Ignore">1.<span
style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]-->Very useful discussion
today, we reviewed proposed language bindings<o:p></o:p></p>
<ol style="margin-top:0in" type="1" start="1">
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo2">19755-
3, C<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo2">19755-
4, C++<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo2">19755-
5, C#<o:p></o:p></li>
</ol>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">We discussed whether special
treatment is deserved for exposing these draft
specifications. 22 Web3D members have access to them
now.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Language bindings need compilable
interfaces for ISO, and at least two implementations for
Web3D.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Close inspection of each shows that a
handful of example programs are available for test
development, and could be used as basis for
X3dToCCppCsharp.xslt conversion stylesheet.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Close inspection of detailed abstract
interfaces, and detailed node/statement implementations
for libraries are available (with some omissions). Each
appears quite similar to the others. Regeneration via
X3DUOM of compilable “header” or interface files
matching the source code in the HTML is possible.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">C and C++ language compilation is
easily possible using gcc compiler. Compilation of C#
is not so clear, some open-source implementations are
available. Once initial compilation of headers is
accomplished, further scrutiny and possible evolution of
design patterns would be straightforward. We’ll use gcc
on the next round since it is part of our build
infrastructure already.<o:p></o:p></p>
<ol style="margin-top:0in" type="1" start="1">
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l2 level1 lfo3">GCC,
the GNU Compiler Collection <a
href="https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgcc.gnu.org%2F&data=04%7C01%7Cbrutzman%40nps.edu%7C4e6ee194cc544357635908d964118d12%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C637650850010860960%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=InQmxP%2BpSNqMvgzuLehZ1WsMAhVzTsElQ6bPWfUJeqw%3D&reserved=0"
moz-do-not-send="true"> https://gcc.gnu.org</a> <o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l2 level1 lfo3"><a
href="https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F26078437%2Fwhy-does-gcc-support-java-and-not-c-sharp&data=04%7C01%7Cbrutzman%40nps.edu%7C4e6ee194cc544357635908d964118d12%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C637650850010860960%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=ID4Gzh%2Bw9bW80EYdfPZCPLjH1m%2BlKDZnZGINmJjcyHA%3D&reserved=0"
moz-do-not-send="true">https://stackoverflow.com/questions/26078437/why-does-gcc-support-java-and-not-c-sharp</a>
<o:p></o:p></li>
</ol>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">We have enough that immediate sharing
of shared specifications can be deferred until broader
discussion is warranted. Sharing of generated code will
help, and that does not have to be restricted.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">We are concerned about personnel
availability, but will keep working on it step by step.<o:p></o:p></p>
<p class="MsoNormal"><br>
We will welcome all help and participation as the work
proceeds.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:.25in;text-indent:-.25in;mso-list:l1
level1 lfo1">
<!--[if !supportLists]--><span style="mso-list:Ignore">2.<span
style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]-->Mantis issue progress is
persevering steadily each week.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:.75in;text-indent:-.25in;mso-list:l1
level2 lfo1">
<!--[if !supportLists]--><span style="mso-list:Ignore">1.<span
style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]-->Mantis 1218 for creating a
MetadataDate or MetadataTime node needs to be deferred
to X3D4.1. Meanwhile we might an example scene
demonstrating how to do such representations with
existing nodes, workably across all forms of X3D. E.g.
pseudocode examples:<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:.75in"><MetadataDouble
name=”time” value=“0.0” reference=”Unix
reference of time with start at 1 JAN 1970”/></p>
<p class="MsoListParagraph" style="margin-left:.75in"><MetadataString
name=”TuesdayLunch” value=“24-AUG-2021-1200-pacific”
reference=”XSD, XML Schema Definition”/>
<MetadataString name=”ThankGoodnessItsMonday”
value=“23-AUG-2021-1200-pacific” reference=”ISO 8601
Time standard”/> </p>
<p class="MsoListParagraph" style="margin-left:.75in">Any
scene of examples would be fully detailed and
cross-referenced for clarity.</p>
<p class="MsoListParagraph" style="margin-left:.75in"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black;background:#F3F3F3">Mantis
1218: 07.2.4 MetadataDate - New node type, or new data
type</span></p>
<p class="MsoListParagraph" style="margin-left:.75in"><a
href="https://www.web3d.org/member-only/mantis/view.php?id=1218"
moz-do-not-send="true">https://www.web3d.org/member-only/mantis/view.php?id=1218</a>
</p>
<p class="MsoListParagraph" style="margin-left:.75in"> </p>
<p class="MsoListParagraph"
style="margin-left:.75in;text-indent:-.25in;mso-list:l1
level2 lfo1">
<!--[if !supportLists]--><span style="mso-list:Ignore">2.<span
style="font:7.0pt "Times New Roman"">
</span></span><!--[endif]-->Other mantis issues are
being fixed and addresses each week. Membership has
value.<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:.75in"><a
href="https://www.web3d.org/member-only/mantis/view_all_bug_page.php"
moz-do-not-send="true">https://www.web3d.org/member-only/mantis/view_all_bug_page.php</a>
</p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Thanks everyone for a worthy effort
today. Have fun with X3D! 8)<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> Brutzman, Donald
(Don) (CIV) <br>
<b>Sent:</b> Friday, August 20, 2021 12:27 AM<br>
<b>To:</b> <a href="mailto:x3d-public@web3d.org"
moz-do-not-send="true"><span style="color:#0563C1">x3d-public@web3d.org</span></a><br>
<b>Cc:</b> Brutzman, Donald (Don) (CIV) <a
href="mailto:brutzman@nps.edu"
moz-do-not-send="true"><span style="color:#0563C1"><brutzman@nps.edu></span></a><br>
<b>Subject:</b> X3D meeting agenda 20 AUG 2021, C
C++ C# and Mantis<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Regular weekly call once again this
week, Friday 10-1100 Pacific on Web3D conference line.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">We will review our approach to C C++
C# encodings and also ongoing Mantis progress.
Additional topics welcome.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">all the best, Don<o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New"">-- </span> <o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New"">Don Brutzman Naval Postgraduate School,
Code USW/Br <a href="mailto:brutzman@nps.edu"
moz-do-not-send="true"><span style="color:#0563C1">brutzman@nps.edu</span></a></span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New"">Watkins 270, MOVES Institute, Monterey CA
93943-5000 USA +1.831.656.2149</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New"">X3D graphics, virtual worlds, navy robotics
<a href="http://faculty.nps.edu/brutzman"
moz-do-not-send="true"><span style="color:#0563C1">http://faculty.nps.edu/brutzman</span></a></span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<pre>_______________________________________________</pre>
<pre>x3d-public mailing list</pre>
<pre><a href="mailto:x3d-public@web3d.org" moz-do-not-send="true">x3d-public@web3d.org</a></pre>
</blockquote>
</div>
<pre style="mso-margin-top-alt:0in;margin-right:.5in;margin-bottom:5.0pt;margin-left:.5in"><a href="http://web3d.org/mailman/listinfo/x3d-public_web3d.org" moz-do-not-send="true">http://web3d.org/mailman/listinfo/x3d-public_web3d.org</a></pre>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New""><o:p> </o:p></span></p>
</div>
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