[x3d-public] Should Appearance material be an SFNode (current) or MFNode?

John Carlson yottzumm at gmail.com
Mon Apr 26 16:38:57 PDT 2021 

I was referring to material being an MFNode.   We cleared that up by
introducing backMaterial into the discussion.  I do not know the state of
the data at the moment, but there was talk of combining the two Material
nodes into a single node.

Great to have you back and I hope you don’t experience long term effects of
COVID.

On Mon, Apr 26, 2021 at 6:05 AM Michalis Kamburelis <
michalis.kambi at gmail.com> wrote:

> "Shape.appearance" is, always was, and should be, SFNode, IMHO.
>
> I can think of some possible uses of "Shape.appearance" being MFNode
> (fallback materials), but it would be a big complication (both in spec
> and in implementation), not justified IMHO.
>
> Regards,
> Michalis
>
> pt., 16 kwi 2021 o 08:54 John Carlson <yottzumm at gmail.com> napisał(a):
> >
> > Indeed, Appearance material is an SFNode, not an MFNode in X3DV4.   What
> do you think?
> >
> > On 4/16/21 1:17 AM, John Carlson wrote:
> >
> > Traceback:
> >
> > Found the following error with my ~/x3dschema JSON parse test, done by
> running `base validate.sh`, results in javaresults.txt, which is filtered
> (also need to filter "node_modules") here:
> https://github.com/coderextreme/x3dschema/blob/master/jsonparseresults.txt
> Cleaned up results here:
> >
> > json-parse json Expected a ':' after a key at 196859 [character 37 line
> 216]
> x3d/content/examples/X3dForAdvancedModeling/AudioSpatialSound/SingleAudio.json
> > json-parse json Expected a ':' after a key at 7359 [character 31 line
> 198]
> x3d/content/examples/X3dForAdvancedModeling/AudioSpatialSound/SplitChannels.json
> > json-parse json Expected a ':' after a key at 287624 [character 37 line
> 270]
> x3d/content/examples/X3dForAdvancedModeling/AudioSpatialSound/SpatialAudioCameraAnimation.json
> >
> >
> > Note that there are two Material objects in SplitChannels.json, so
> -material should probably be an array.   Will check XML.
> >
> > SplitChannels.x3d excerpt:
> >
> >       <Transform DEF='volumeRight' rotation='1 0 0 -0.5' scale='10 10
> 10' translation='0 -10 0'>
> >         <Shape>
> >           <Appearance>
> >             <Material diffuseColor='0.345 0.345 0.882' transparency='0'/>
> >             <Material ambientIntensity='0.0933' diffuseColor='1 1 1'
> emissiveColor='0 0 0' shininess='0.51' specularColor='0.46 0.46 0.46'/>
> >           </Appearance>
> >           <Text solid='false' string='Right Channel Volume'>
> >             <FontStyle family=''Times'' horizontal='true'
> justify='BEGIN' leftToRight='true' size='1' spacing='1' style='BOLD'
> topToBottom='true'/>
> >           </Text>
> >         </Shape>
> >       </Transform>
> >
> >
> > The following will show the two Material Appearances in all three .x3d
> files.
> >
> > x3d/content/examples/X3dForAdvancedModeling/AudioSpatialSound$ egrep
> 'Appearance|Material' *.x3d
> >
> > Will check for error/warning/development.  An allied file in same folder
> has a warning, but none in these .x3d files that I can tell.
> >
> > Will check web.
> https://x3dgraphics.com/examples/X3dForAdvancedModeling/AudioSpatialSound/SplitChannelsIndex.html
> looks like above.
> >
> >
> > Will check X3DV4 schema:
> >
> > <xs:element name="Appearance">
> >         <xs:annotation>
> >             <xs:appinfo>
> >                 [snip]
> >                 <xs:element name="material" type="SFNode"
> fixed="inputOutputField" default="X3DMaterialNode"/>
> >
> > I'm reading this that there shouldn't be more that one Material,
> otherwise, material would be an MFNode.
> >
> > Running the XML files through X3D validator:   All three .x3d files fail
> >
> > Don't forget to validate before checking in.  I'm aware these files are
> under development. My best guess is we'll have to wait for a new copy of
> the X3D validator and schema?
> >
> > If we make -material an array, this will be a pretty significant change,
> basically affecting practically everything.  It's easy for XML, and we
> haven't defined X3D JSON in a standard, but in the future, I recommend
> changing SFNode to MFNode with care.
> >
> > jsonlint errors follow:
> >
> > SingleAudio.json
> > Error: Parse error on line 207:
> > ...                    { "Material":
> > -----------------------^
> > Expecting 'STRING', got '{'
> >     at Object.parseError
> (/usr/local/lib/node_modules/jsonlint/lib/jsonlint.js:55:11)
> >     at Object.parse
> (/usr/local/lib/node_modules/jsonlint/lib/jsonlint.js:132:22)
> >     at parse (/usr/local/lib/node_modules/jsonlint/lib/cli.js:82:14)
> >     at main (/usr/local/lib/node_modules/jsonlint/lib/cli.js:135:14)
> >     at Object.<anonymous>
> (/usr/local/lib/node_modules/jsonlint/lib/cli.js:179:1)
> >     at Module._compile (internal/modules/cjs/loader.js:1138:30)
> >     at Object.Module._extensions..js
> (internal/modules/cjs/loader.js:1158:10)
> >     at Module.load (internal/modules/cjs/loader.js:986:32)
> >     at Function.Module._load (internal/modules/cjs/loader.js:879:14)
> >     at Function.executeUserEntryPoint [as runMain]
> (internal/modules/run_main.js:71:12)
> > SpatialAudioCameraAnimation.json
> > Error: Parse error on line 261:
> > ...                    { "Material":
> > -----------------------^
> > Expecting 'STRING', got '{'
> >     at Object.parseError
> (/usr/local/lib/node_modules/jsonlint/lib/jsonlint.js:55:11)
> >     at Object.parse
> (/usr/local/lib/node_modules/jsonlint/lib/jsonlint.js:132:22)
> >     at parse (/usr/local/lib/node_modules/jsonlint/lib/cli.js:82:14)
> >     at main (/usr/local/lib/node_modules/jsonlint/lib/cli.js:135:14)
> >     at Object.<anonymous>
> (/usr/local/lib/node_modules/jsonlint/lib/cli.js:179:1)
> >     at Module._compile (internal/modules/cjs/loader.js:1138:30)
> >     at Object.Module._extensions..js
> (internal/modules/cjs/loader.js:1158:10)
> >     at Module.load (internal/modules/cjs/loader.js:986:32)
> >     at Function.Module._load (internal/modules/cjs/loader.js:879:14)
> >     at Function.executeUserEntryPoint [as runMain]
> (internal/modules/run_main.js:71:12)
> > SplitChannels.json
> > Error: Parse error on line 189:
> > ...                    { "Material":
> > -----------------------^
> > Expecting 'STRING', got '{'
> >     at Object.parseError
> (/usr/local/lib/node_modules/jsonlint/lib/jsonlint.js:55:11)
> >     at Object.parse
> (/usr/local/lib/node_modules/jsonlint/lib/jsonlint.js:132:22)
> >     at parse (/usr/local/lib/node_modules/jsonlint/lib/cli.js:82:14)
> >     at main (/usr/local/lib/node_modules/jsonlint/lib/cli.js:135:14)
> >     at Object.<anonymous>
> (/usr/local/lib/node_modules/jsonlint/lib/cli.js:179:1)
> >     at Module._compile (internal/modules/cjs/loader.js:1138:30)
> >     at Object.Module._extensions..js
> (internal/modules/cjs/loader.js:1158:10)
> >     at Module.load (internal/modules/cjs/loader.js:986:32)
> >     at Function.Module._load (internal/modules/cjs/loader.js:879:14)
> >     at Function.executeUserEntryPoint [as runMain]
> (internal/modules/run_main.js:71:12)
> >
> > _______________________________________________
> > x3d-public mailing list
> > x3d-public at web3d.org
> > http://web3d.org/mailman/listinfo/x3d-public_web3d.org
>
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