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<p class="MsoNormal">See the code in x3d.py for details on use of Null and []<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Testing that a list is not empty before iterating avoids errors like
<span style="font-family:"Courier New",serif">object is not iterable</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New",serif">all the best, Don<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New",serif">--
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New",serif">Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New",serif">Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New",serif">X3D graphics, virtual worlds, navy robotics https://</span>
<span style="font-size:10.0pt;font-family:"Courier New",serif">faculty.nps.edu/brutzman<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> John Carlson <yottzumm@gmail.com> <br>
<b>Sent:</b> Sunday, December 5, 2021 10:41 PM<br>
<b>To:</b> Brutzman, Donald (Don) (CIV) <brutzman@nps.edu>; Vince Marchetti <vmarchetti@kshell.com><br>
<b>Cc:</b> X3D Public Mailing List (x3d-public@web3d.org) <x3d-public@web3d.org><br>
<b>Subject:</b> Re: X3DPSAIL x3d.py package updated and deployed to x3d.py, adding initial support for JSON export<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<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>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On 12/6/21 00:29, John Carlson wrote:<o:p></o:p></p>
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<p class="MsoNormal">On 12/6/21 00:19, John Carlson wrote:<o:p></o:p></p>
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<p>Don, I will probably begin working on JSON export testing after I take the JSON import example for a short spin. It's good to get a code download.<o:p></o:p></p>
<p>Note that SFVec3f should put a tuple in the structure when parsing JSON...normal JSON does not include tuples, so there needs to be a type conversion.<o:p></o:p></p>
<p>That is, centerOfRotation and position in Viewpoint should be tuples, not lists as JSON provides.<o:p></o:p></p>
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<p class="MsoNormal">Fixed as far as I am concerned right now. I will try to remove my tuple soon.<o:p></o:p></p>
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<p class="MsoNormal">Tested removing tuple() without any problems.<br>
<br>
<o:p></o:p></p>
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<p>I sent a previous message about HelloWorld.py and how the fields might be converted to lists in the the constructor call.<o:p></o:p></p>
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<p class="MsoNormal">That has been done, AFAICT.<o:p></o:p></p>
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<p>SFVec3f field values converted to lists from tuples, to clarify. Good work!<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">John, please collect your comments and examples regarding JSON export flaws. The build.examples.log.txt file is a good place to start. Am returning to work this week, finishing
up everything not yet done this year…<o:p></o:p></p>
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<p>I need to talk to you about making MF fields and nodes iterable. Output fails in both JSON and XML output.<o:p></o:p></p>
<p>See traceback here:<o:p></o:p></p>
<p><o:p> </o:p></p>
<p><span style="font-family:"Courier New",serif;color:black;background:white">Traceback (most recent call last):
</span><span style="font-family:"Courier New",serif"><br>
File "/c/x3d-code/www.web3d.org/x3d/content/examples/x3dinput.py", line 141, in <module>
<br>
print(scene.JSON()) <br>
File "/c/x3d-code/www.web3d.org/x3d/content/examples/x3d.py", line 12790, in JSON
<br>
result += str(self.head.JSON(indentLevel=indentLevel+1, syntax=syntax)) <br>
File "/c/x3d-code/www.web3d.org/x3d/content/examples/x3d.py", line 10792, in JSON
<br>
for each in self.children: <br>
TypeError: 'JSON_MFNode' object is not iterable</span><o:p></o:p></p>
<p><o:p> </o:p></p>
<p><span style="font-family:"Courier New",serif">I'm hoping we can spend some collaboration time working on these issues. Otherwise, I will try to engage my python programmer to discuss options.</span><o:p></o:p></p>
<p><span style="font-family:"Courier New",serif">Pretty much all my code has been posted except for removing tuple().</span><o:p></o:p></p>
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