[x3d-public] X3DPSAIL x3d.py package updated and deployed to x3d.py, adding initial support for JSON export

[John Carlson]

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.

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.

That is, centerOfRotation and position in Viewpoint should be tuples, 
not lists as JSON provides.

I sent a previous message about HelloWorld.py and how the fields might 
be converted to lists in the the constructor call.

I will probably talk to you about how to make MF fields iterable in the 
next few days and whether they need to be

I think that pretty much summarizes previous messages.

On 12/5/21 23:47, Brutzman, Donald (Don) (CIV) wrote:
>
> Am happy to report that after a bunch of work, X3DPSAIL x3d.py package 
> is updated and deployed to x3d.py
>
> Python users can update using PyPy with the command “pip install x3d” 
> – pretty simple!
>
> https://pypi.org/project/x3d
>
> Documentation:
>
>   * Python X3D Package x3d.py, X3D Python Scene Access Interface
>     Library (X3DPSAIL)
>   * The x3d.py Python X3D Package supports programmers with Python
>     interfaces and objects for standards-based X3D programming, all as
>     open source.
>   * https://www.web3d.org/x3d/stylesheets/python/python.html
>
> Improvements include:
>
>  1. VRML export improvements and JSON export added, though likely with
>     a few bugs still.
>  2. added method XMLvalidate() for well-formed checkes and schema
>     validation,
>  3. added utility function prepend_line_numbers() for prettier file
>     outputs/excerpts when desired,
>  4. fixed hasChild() function,
>  5. confirmed fixed-value functions working as constants (no set methods),
>  6. added appropriate @classmethod and @staticmethod annotations for
>     simpler invocation,
>  7. VRML and JSON export smoke tests,
>  8. Display selected REGEX_XML() values (available for all field
>     types) and TOOLTIP_URL() values (available for all types, nodes
>     and statements).
>
> Repeating and refining rapid-fire smoke tests and also immense 
> regression tests for all X3D Example Archives.
>
>  1. Example usage in detail:
>     https://www.web3d.org/x3d/stylesheets/python/examples/PythonX3dSmokeTests.py
>  2. Example usage results:
>     https://www.web3d.org/x3d/stylesheets/python/build.examples.log.txt
>  3. Sample IDLE screenshot:
>     https://www.web3d.org/x3d/stylesheets/python/images/PythonX3dSmokeTestsIDLE.png
>
>  4. X3D Resources, Examples: Scene Archives for X3D - model links and
>     build log follows.
>  5. https://www.web3d.org/x3d/content/examples/X3dResources.html#Examples
>  6. https://www.web3d.org/x3d/content/examples/build.python.all.log.txt
>  7. Once again X3dToPython.xslt stylesheet applies latest greatest
>     code patterns and includes a self-test block at the end,
>     self-reporting either success or a problem.
>
> Vince, your reported apostrophe/quotation serialization issues look to 
> be fixed according to the following test excerpts.  How are these:
>
>   * https://www.web3d.org/x3d/stylesheets/python/examples/HelloWorld.x3d
>
>   <Scene>
>
>     <!-- Example scene to illustrate X3D nodes and fields (XML 
> elements and attributes) -->
>
>     <WorldInfo title='Hello World!'/>
>
>     <WorldInfo title='Hello ' apostrophe 1'/>
>
>     <WorldInfo title="Hello ' apostrophe 2"/>
>
>     <WorldInfo title='Hello " quotation mark 3'/>
>
>     <WorldInfo title="Hello " quotation mark 4"/>
>
>     <MetadataSet name="items'">
>
>         <MetadataInteger containerField="value" name="one" value="1"/>
>
>         <MetadataInteger containerField="value" name="two" value="2"/>
>
>     </MetadataSet>
>
>     <Group>
>
>   * https://www.web3d.org/x3d/stylesheets/python/examples/HelloWorld.py
>
> Scene=Scene(
>
>     #  Example scene to illustrate X3D nodes and fields (XML elements 
> and attributes)
>
>     children=[
>
>     WorldInfo(title='Hello World!'),
>
>     WorldInfo(title="Hello ' apostrophe 1"),
>
>     WorldInfo(title="Hello ' apostrophe 2"),
>
>     WorldInfo(title='Hello " quotation mark 3'),
>
>     WorldInfo(title='Hello " quotation mark 4'),
>
>     MetadataSet(name="items'",
>
>       value=[
>
> MetadataInteger(name='one',value=[1]),
>
> MetadataInteger(name='two',value=[2])]),
>
>     Group(
>
> Lots and lots of code tuneups performed by paying attention to pylint 
> warnings.  Hopefully no unintended side effects for others, meanwhile 
> the test cases all seem stable.  This pylint quest originally started 
> with over 100K lines of warning (urrk cough cough cough) and is now 
> down to 700 lines...  The great bug hunt continues.
>
>   * https://www.web3d.org/x3d/stylesheets/python/build.pylint.log.txt
>   * pylint reports: “Your code has been rated at 9.89/10 (previous
>     run: 9.89/10, +0.00)”
>
> 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…
>
> New TODOs include figuring out how to apply regexes on each field 
> during XML export for additional quality assurance.
>
>   * https://www.web3d.org/specifications/X3dRegularExpressions.html
>
> Issue reports always welcome.  Have fun with X3D Python!  8)
>
> all the best, Don
>
> -- 
>
> Don Brutzman  Naval Postgraduate School, Code USW/Br brutzman at nps.edu
>
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA    
> +1.831.656.2149
>
> X3D graphics, virtual worlds, navy robotics https:// 
> faculty.nps.edu/brutzman
>
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