[x3d-public] Finding more than one use of a DEF in VRML - Chisel

[John Carlson]

I'm trying to bring up Chisel command line.

So far I have:

java -mx128m -cp build/chisel.jar com.trapezium.chisel.CLChisel
../AnnexAD.chiseled.html ../AnnexAD.wrl

(I also linked src/images to images)

I'm not really sure I want to use the command-line.  I'll have to read the
documents some more.

I'll start exploring clean.  Looks interesting.

Thanks,

John
On Thu, Mar 26, 2020 at 12:49 PM John Carlson <yottzumm at gmail.com> wrote:

> It's important to note that this thread is mainly about DEF in VRML.
> Which may have different behavior than DEF in XML and JSON.   Do I have the
> whole story now, or is VRML dependent on XML types?
>
> Thanks,
>
> John
>
> On Thu, Mar 26, 2020 at 11:46 AM Don Brutzman <brutzman at nps.edu> wrote:
>
>> On 3/26/2020 8:54 AM, John Carlson wrote:
>> > As mentioned on other thread:
>> >
>> > https://www.web3d.org/x3d/content/X3dTooltips.html#ID
>> >
>> > "*ID <https://www.w3.org/TR/REC-xml/#sec-attribute-types>* is a
>> NMTOKEN that is unique within the scene, corresponding to the DEF attribute
>> in X3D. "
>> >
>> > This would mean that the DEF attribute is unique within a scene?  Or no?
>> >
>> > Help!   The sky is falling!
>> >
>> > John
>>
>> that is exactly why you want to read my note from earlier today,
>> conveniently appearing below in your message:
>>
>> "Wondering if we should define a suggested practice for de-duplicating
>> DEF names within a proto"
>>
>> > On Thu, Mar 26, 2020 at 9:26 AM Don Brutzman <brutzman at nps.edu <mailto:
>> brutzman at nps.edu>> wrote:
>> >
>> >     On 3/25/2020 7:11 PM, GPU Group wrote:
>> >      > Chisel? "it was simply put in the public domain by Trapezium
>> when they folded many years ago. They didn¹t specify any license" - Louka
>> >      > http://dug9.users.sourceforge.net/web3d/temp/chisel-src.zip
>> >
>> >     Also
>> >
>> >     * X3D Resources: Conversions and Translation Tools
>> >
>> https://www.web3d.org/x3d/content/examples/X3dResources.html#Conversions
>> >
>> >     * 15. Chisel VRML Optimisation Tool
>> >     http://www2.hrp.no/vr/tools/chisel/install.htm
>> >
>> >         with autoinstaller
>> >     http://www2.hrp.no/vr/tools/chisel/install.htm
>> >
>> >         and documentation
>> >     http://www2.hrp.no/vr/tools/chisel/doc/index.html
>> >
>> >         provided by Halden Virtual Reality Centre.
>> >     http://www2.hrp.no/vr/about/index.html
>> >
>> >         Originally built by Trapezium and maintained by NIST.
>> >     http://ovrt.nist.gov/chisel.html
>> >         (link no longer working, hoping to find replacement)
>> >
>> >      > But I suspect double-deffing isn't illegal. I think I've been
>> through it, and different browsers honored the first or last definition.
>> >      > -Doug
>> >
>> >     Agreed.  Although it is legal in X3D abstract specification and in
>> VRML/ClassicVRML encodings, it leads to validation difficulties in XML (and
>> at some point JSON when JSON Schema is finished).
>> >
>> >     Wondering if we should define a suggested practice for
>> de-duplicating DEF names within a proto, e.g.
>> >
>> >              MyWhizzyProto includes DEF SomeDuplicatedName
>> >
>> >     might get tidied up to globally rename
>> >
>> >              MyWhizzyProto includes DEF MyWhizzyProto.SomeDuplicatedName
>> >
>> >     We might also apply this in the PrototypeExpander work if that gets
>> revisited.
>> >
>> >     Thoughts?
>> >
>> >      > On Wed, Mar 25, 2020 at 7:43 PM John Carlson <yottzumm at gmail.com
>> <mailto:yottzumm at gmail.com> <mailto:yottzumm at gmail.com <mailto:
>> yottzumm at gmail.com>>> wrote:
>> >      >
>> >      >     That is, more than one DEF with the same value.
>> >      >
>> >      >     I realize that separate PROTOs may have the same DEF due to
>> namespaces. Unfortunately writing a Unix script to find this takes massive
>> brain power.
>> >      >
>> >      >     John
>> >      >
>> >      >     On Wed, Mar 25, 2020 at 8:37 PM John Carlson <
>> yottzumm at gmail.com <mailto:yottzumm at gmail.com> <mailto:yottzumm at gmail.com
>> <mailto:yottzumm at gmail.com>>> wrote:
>> >      >
>> >      >         I’m not particular looking for a vrml parser unless it
>> catches double use of a DEF.
>> >
>> >     all the best, Don
>> >     --
>> >     Don Brutzman  Naval Postgraduate School, Code USW/Br
>> brutzman at nps.edu <mailto:brutzman at nps.edu>
>> >     Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA
>>  +1.831.656.2149
>> >     X3D graphics, virtual worlds, navy robotics
>> http://faculty.nps.edu/brutzman
>> >
>>
>> 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
>> http://faculty.nps.edu/brutzman
>>
>
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