[x3d-public] X3DJSAIL update: improved output when exporting ClassicVRML/VRML97 models

Sat Jun 22 07:26:19 PDT 2024

Question :  can I use and inline to add joints to a humanoid?

John

On Sat, Jun 22, 2024 at 4:50 AM John Carlson <yottzumm at gmail.com> wrote:

> Don is quite good! He fixed a bug before I could stumble around writing a
> ticket for it!
> We have different Java coding styles.  Diversity of test cases is good,
> which is one reason why I maintain X3DJSONLD.  I'd still like to have a
> discussion of how to break up huge HAnim Java programs and Pascal programs
> into smaller pieces (yes, I know with VRML and X3D). My mind is percolating.
>
> Now if I could only convince Michalis it's a good idea to add a fluent
> interface to Castle in good order.  This bodes well for SAI in general, and
> I've also suggested a fluent interface to the C++ SAI to Myeong, too (but
> it's not so critical there, as I'm not creating any running programs, just
> using C++ as a network protocol/DOM-like thing. No, I'm not sending
> binaries over the network).
>
> On Sat, Jun 22, 2024 at 3:29 AM Brutzman, Donald (Don) (CIV) via
> x3d-public <x3d-public at web3d.org> wrote:
>
>> Am happy to report an X3DJSAIL update: improved output when exporting
>> ClassicVRML/VRML97 models.
>>
>>
>>
>>    - X3D Java Scene Access Interface Library (X3DJSAIL)
>>    - X3D Java Scene Access Interface Library (X3DJSAIL) supports
>>    programmers with standards-based X3D Java interfaces and objects, all as
>>    open source.
>>    - https://www.web3d.org/specifications/java/X3DJSAIL.html
>>
>>
>>
>> Motivating problem: excellent sleuthing and a well-stated issue report by
>> John Carlson revealed a significant issue with the ClassicVRML export.
>>
>>
>>
>>    - X3DJSAIL: VRML head and Scene out of order
>>    - https://sourceforge.net/p/x3d/tickets/27
>>
>>
>>
>> To improve quality assurance (QA) of ClassicVRML and VRML97 output by
>> X3DJSAIL.  I applied command-line validation of the ClassicVRML .x3dv
>> output using the *castle-model-converter* application by Michalis
>> Kamburelis, all to good effect.  Troubleshooting led to fixes of the
>> original reported problem and perhaps a dozen other errors also.  This
>> validation is now part of the build scripts so that further regression
>> testing is always produced as part of X3DJSAIL library development.
>>
>>
>>
>>    - Castle Model Converter (formerly tovrmlx3d)
>>    - https://castle-engine.io/castle-model-converter
>>
>>
>>
>> Test program and output:
>>
>>
>>
>>    - HelloWorldProgram.java
>>    - Description:  Example "smoke test" program to create a highly
>>    detailed X3D model using the X3D Java Scene Access Interface Library
>>    (X3DJSAIL).
>>    -
>>    https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/stylesheets/java/examples/HelloWorldProgram.java
>>
>>
>>
>>    - HelloWorldProgram output, ClassicVRML and VRML97
>>    -
>>    https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/stylesheets/java/examples/HelloWorldProgramOutput.x3dv
>>    -
>>    https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/stylesheets/java/examples/HelloWorldProgramOutput.wrl
>>    - note that other outputs are also provided:  XML .x3d, pretty-print
>>    .html, Java, Python.py, compressed .exi, X_ITE and X3DOM html, etc.
>>
>>
>>
>>    - Build test log is in version control to track improvements and
>>    avoid backsliding:
>>    -
>>    https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/stylesheets/java/build.test.X3DJSAIL.txt
>>    - Excerpt showing castle-model-converter validation:
>>
>>
>>
>> ClassicVRML validation: castle-model-converter.exe C:\x3d-code\
>> www.web3d.org\x3d\stylesheets\java\examples/HelloWorldProgramOutput.x3dv
>> --validate --enable-downloads
>>
>> castle-model-converter: Warning: X3D: Invalid X3D file: Invalid sequence
>> in a string: "\n". Backslash must be followed by another backslash or
>> double quote, for SFString and MFString (in X3D classic (VRML) encoding)
>> and for MFString (in X3D XML encoding).
>>
>> castle-model-converter: Warning: VRML/X3D: Prototype "ArtDeco02"
>> referenced by external prototype "ArtDeco02" doesn't have field
>> "description"
>>
>> castle-model-converter: Warning: VRML/X3D: Inline node name "inlineScene"
>> not found (or nothing was EXPORTed from it), cannot IMPORT
>>
>> castle-model-converter: Warning: X3D: Invalid X3D file: Invalid sequence
>> in a string: "\n". Backslash must be followed by another backslash or
>> double quote, for SFString and MFString (in X3D classic (VRML) encoding)
>> and for MFString (in X3D XML encoding).
>>
>> castle-model-converter: Warning: X3D: Node "Anchor" is not allowed in the
>> field "watchList" of the node "LoadSensor"
>>
>> castle-model-converter: Warning: X3D: Node "GeoMetadata" is not allowed
>> in the field "watchList" of the node "LoadSensor"
>>
>> Exception "Exception":
>>
>> Validation failed (consult the warnings above), exiting with non-zero
>> status
>>
>>
>>
>> Michalis was informed of the last two watchlist errors and reportedly has
>> already fixed them.  Many of the other warnings are also fixable if the
>> test program is improved to use actual file addresses instead of
>> pseudo-urls.  Progress steadily continues…  the only “really bad errors”
>> are the ones you don’t know about!
>>
>>
>>
>> Javadoc documentation for X3DJSAIL programmers:
>>
>>    - https://www.web3d.org/specifications/java/javadoc
>>
>>
>>
>> Over 4000 examples using X3DJSAIL, converted automatically from .x3d to
>> .java in the X3D Example Models Archives:
>>
>>    - https://www.web3d.org/specifications/java/X3DJSAIL.html#Examples
>>
>>
>>
>> So X3DJSAIL is excellent for plain-old Java handling of X3D, and keeps
>> getting better.  Again thanks to John and Michalis for their contributions
>> to identify problems that are now fixed.
>>
>>
>>
>> Have fun with X3D Java!  😊
>>
>>
>>
>> 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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>>
>
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