[x3d-public] createStatement for SAI - multiple examples look quite similar, for nodes and statements

[Brutzman, Donald (Don) (CIV)]

John, every single one of the ~4000 scenes created for Java X3DJSAIL and Python x3d.py X3DPSAIL and JSON includes statement and node creation.  They are designed to follow the X3D SAI, as Joe indicates.

 

Example abridged excerpts showing X3D, head and meta statements follow.  Inquiring eyes will note that they have essentially identical structure, just different syntax for each programming language.

 

*	X3D Example Archives: X3D4AM, X3D for Advanced Modeling, Hello World Scenes, Hello World
*	https://x3dgraphics.com/examples/X3dForAdvancedModeling/HelloWorldScenes/HelloWorldIndex.html

 

 

*	https://x3dgraphics.com/examples/X3dForAdvancedModeling/HelloWorldScenes/HelloWorld.java

 

  x3dModel = new X3D().setProfile(X3D.PROFILE_IMMERSIVE).setVersion(X3D.VERSION_3_3)

  .setHead(new head()

    .addComments(" Alternate encodings: VRML97, X3D ClassicVRML Encoding, X3D Compressed Binary Encoding (CBE), X3DOM, JSON ")

    .addMeta(new meta().setName(meta.NAME_TITLE      ).setContent("HelloWorld.x3d"))

    .addMeta(new meta().setName(meta.NAME_DESCRIPTION).setContent("Simple X3D model example: Hello World!"))

    .addMeta(new meta().setName(meta.NAME_CREATED    ).setContent("30 October 2000"))

    .addMeta(new meta().setName(meta.NAME_MODIFIED   ).setContent("11 June 2021")))

  .setScene(new Scene()

    .addComments(" Example scene to illustrate X3D nodes and fields (XML elements and attributes) ")

    .addChild(new WorldInfo().setInfo(new String[] {"Example scene to illustrate a simple X3D model"}).setTitle("Hello World!"))

 

 

*	https://x3dgraphics.com/examples/X3dForAdvancedModeling/HelloWorldScenes/HelloWorld.python

 

newModel=X3D(profile='Immersive',version='3.3',

  head=head(

    children=[

    #  Alternate encodings: VRML97, X3D ClassicVRML Encoding, X3D Compressed Binary Encoding (CBE), X3DOM, JSON 

    meta(content='HelloWorld.x3d',name='title'),

    meta(content='Simple X3D model example: Hello World!',name='description'),

    meta(content='30 October 2000',name='created'),

    meta(content='11 June 2021',name='modified')]),

  Scene=Scene(

    #  Example scene to illustrate X3D nodes and fields (XML elements and attributes) 

    children=[

    WorldInfo(info=["Example scene to illustrate a simple X3D model"],title='Hello World!'),

 

 

*	https://x3dgraphics.com/examples/X3dForAdvancedModeling/HelloWorldScenes/HelloWorld.json

 

{ "X3D": {

    "encoding":"UTF-8",

    "@profile":"Immersive",

    "@version":"3.3",

    "@xsd:noNamespaceSchemaLocation":https://www.web3d.org/specifications/x3d-3.3.xsd,

    "JSON schema":https://www.web3d.org/specifications/x3d-4.0-JSONSchema.autogenerated.json,

    "head": {

        "-children":[

          {

            "#comment":"Alternate encodings: VRML97, X3D ClassicVRML Encoding, X3D Compressed Binary Encoding (CBE), X3DOM, JSON"

          }

        ],

        "meta": [

          {

            "@name":"title",

            "@content":"HelloWorld.x3d"

          },

          {

            "@name":"description",

            "@content":"Simple X3D model example: Hello World!"

          },

          {

            "@name":"created",

            "@content":"30 October 2000"

          },

          {

            "@name":"modified",

            "@content":"11 June 2021"

          }

        ]

    },

    "Scene": {

        "-children":[

          {

            "#comment":"Example scene to illustrate X3D nodes and fields (XML elements and attributes)"

          },

          { "WorldInfo":

            {

              "@info":["Example scene to illustrate a simple X3D model"],

              "@title":"Hello World!"

            }

          },

 

 

 

plus ça change…

https://en.wiktionary.org/wiki/plus_ça_change

1.      ( <https://en.wiktionary.org/wiki/Appendix:Glossary#literally> literally) The more it changes, the more it's the same thing (sometimes loosely translated as  <https://en.wiktionary.org/wiki/the_more_things_change,_the_more_they_stay_the_same> the more things change, the more they stay the same).

2.      Although the outward appearance may change, fundamentals are constant.

 

 

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

 

From: x3d-public <x3d-public-bounces at web3d.org> On Behalf Of Joseph D Williams
Sent: Wednesday, January 25, 2023 9:48 AM
To: John Carlson <yottzumm at gmail.com>; X3D Graphics public mailing list <x3d-public at web3d.org>
Subject: Re: [x3d-public] createStatement for SAI

 

Please look at the X3D Abstract SAI spec.

Joe

 

From: John Carlson <mailto:yottzumm at gmail.com> 
Sent: Tuesday, January 24, 2023 7:52 PM
To: X3D Graphics public mailing list <mailto:x3d-public at web3d.org> 
Subject: [x3d-public] createStatement for SAI

 

How is statement creation done in SAI?  How similar is it to node creation?

 

Thanks,

 

John

 

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