[x3d-public] Invalid geoSystem values in X3D Resources BasicGeospatial examples.
Leonard Daly
Leonard.Daly at realism.com
Sun May 13 19:38:11 PDT 2018
On 5/13/2018 4:12 PM, John Carlson wrote:
>
>
> On Sun, May 13, 2018, 7:00 PM Leonard Daly <Leonard.Daly at realism.com
> <mailto:Leonard.Daly at realism.com>> wrote:
>
> On 5/13/2018 9:58 AM, John Carlson wrote:
>>
>> You may want to resubmit your 3TM and Planet changes to Mantis.
>> I searched for 3TM and Planet in Mantis (All Projects) and got
>> nothing significant back.
>>
>> However, I was denied access to:
>>
>> http://www.web3d.org/node/1694/submission/1671
>>
>
> This is the Web3D Specification comment form. 1671 is the
> submission ID. Only a few people (Anita, myself) have access to
> the spec comment submissions. All submissions are emailed to the
> X3D WG list and appear there.
>
>
> I didn't expect to gain access. Is there an archive of the X3D wg
> list if I deleted my email?
You can get to the X3D WG archive list using
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All of these methods will require you to log in using your Mantis
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Public lists can be searched using Google or other search engine.
Leonard Daly
>
>
>> Why?
>>
>> and there’s:
>>
>> http://www.web3d.org/member-only/mantis/view.php?id=1215
>>
>
> For reference this issue is titled as "25.2.3 Specifying a spatial
> reference frame - Inaccurate UTM example" and is listed as public.
>
>
> Yes, seems unrelated. I might have seen Doug's previous post to the
> mailing list, but I'm not sure. Nothing came through email recently
> if he resubmitted it.
>
> John
>
>
>
> Leonard Daly
>
>
>
>
>> Not that I want to imagine writing schema for such a thing…that’s
>> why I hope to get geoSystem into more reasonable shape in the
>> Unified Object Model (we need volunteers, I think) before trying
>> to do it in schema.
>>
>> John
>>
>> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986>
>> for Windows 10
>>
>> *From: *GPU Group <mailto:gpugroup at gmail.com>
>> *Sent: *Sunday, May 13, 2018 9:16 AM
>> *To: *X3D Graphics public mailing list <mailto:x3d-public at web3d.org>
>> *Subject: *Re: [x3d-public] Invalid geoSystem values in X3D
>> Resources BasicGeospatial examples.
>>
>> I think N should be OK, just as you say a redundant default.. I
>> proposed several new things in the geoSystem field, submitted to
>> spec comments a few months ago, so I hope your processor works on
>> the new things if ever adopted.
>>
>> -Doug
>>
>> R,A,B,F,IF - ways to drectly specifiy the shape of the ellipsoid
>> so other planet shapes and sizes could be modeled
>>
>> 3TM - similar to UTM (except 3degree zones, no false northing or
>> easting, different central meridian scale factor .9999)
>>
>> ...
>>
>> I also proposed a Planet node - allows multiple planets in one scene
>>
>> On Sun, May 13, 2018 at 6:14 AM, John Carlson <yottzumm at gmail.com
>> <mailto:yottzumm at gmail.com>> wrote:
>>
>> The object model is expressive enough to list conforming
>> values, yet accept others, but as far as I know (I may be
>> wrong here), it is not expressive enough to express supported
>> geoSystem values. This is a problem. How do we resolve it,
>> and should we, if we are accepting other values? Is it
>> resolved in X3DJSAIL? Should I get rid of Roy's JSON
>> subschema for geoSystem?
>>
>> John
>>
>> On Sun, May 13, 2018, 7:43 AM John Carlson
>> <yottzumm at gmail.com <mailto:yottzumm at gmail.com>> wrote:
>>
>> I believe the purpose of schema is to support minimally
>> acceptable files. It should flag files which are
>> questionable. If a file can be brought into conformance
>> easily, shouldn't it be?
>>
>> Yes, you should be able to ignore the results of the
>> schema validation...at your own risk.
>>
>> What is the purpose of the X3D resources examples, but to
>> show a good example practice? Or are we testing tools to
>> make sure certain values are acceptable? If that's the
>> case, then the schema should be updated for ALL versions.
>>
>> John
>>
>> On Sun, May 13, 2018, 7:31 AM John Carlson
>> <yottzumm at gmail.com <mailto:yottzumm at gmail.com>> wrote:
>>
>> Then the version of the document should be upgraded
>> to 4.0 or above, and the corresponding schema
>> updated. I can upgrade the schema for all versions,
>> since it is hard coded into the schema generator.
>> But really we need support from the object model if
>> possible. Right now, I have to explicitly allow it
>> for all versions, since I use stdin/stdout instead of
>> files. Does the unified object model specify a
>> version # in its contents? When the unified object
>> model supports "N" in a usable fashion, then I can
>> code something into the schema, or delete the
>> requirement to check geoSystem.
>>
>> Thanks, away from computer presently, or I would check.
>>
>> I don't see why Roy went to all the effort to create
>> a schema, if we are going to ignore it?
>>
>> This applies in many areas...if we merely have
>> supported values, yet others must be accepted, why is
>> there a standard?
>>
>> I don't believe it's ambiguous in this case of X3D.
>> A missing "N" means Northern Hemisphere.
>>
>> John
>>
>> On Sun, May 13, 2018, 12:46 AM Andreas Plesch
>> <andreasplesch at gmail.com
>> <mailto:andreasplesch at gmail.com>> wrote:
>>
>> http://www.web3d.org/specifications/19775-1/V3.2/Part01/components/geodata.html#Specifyingaspatialreference
>> <http://www.web3d.org/documents/specifications/19775-1/V3.2/Part01/components/geodata.html#Specifyingaspatialreference>
>>
>> lists the supported strings for the geoSystem
>> MFString field.
>>
>> The prose choosing 'supported' over 'legal' or
>> 'conforming' could be taken to mean that other
>> than listed strings may be allowed to be
>> supported as well by some browsers.
>>
>> However, previous discussions indicate that
>> schemas are not sufficiently expressive to
>> describe unknown but conforming string values.
>>
>> One resolution was to explicitly allow 'N' in
>> upcoming X3D version, and perhaps silently allow
>> it for 3.3.
>>
>> Outside of X3D UTM zones often have the N
>> hemisphere identifier to avoid ambiguity.
>>
>> Andreas
>>
>> Date: Sat, 12 May 2018 19:54:17 -0400
>> From: John Carlson <yottzumm at gmail.com
>> <mailto:yottzumm at gmail.com>>
>> To: Don Brutzman <brutzman at nps.edu
>> <mailto:brutzman at nps.edu>>, X3D Graphics
>> public mailing list
>> <x3d-public at web3d.org
>> <mailto:x3d-public at web3d.org>>
>> Subject: [x3d-public] Invalid geoSystem
>> values in X3D Resources Basic
>> Geospatial examples.
>> Message-ID:
>> <5af77ea8.1c69fb81.7da1f.13e3 at mx.google.com
>> <mailto:5af77ea8.1c69fb81.7da1f.13e3 at mx.google.com>>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Don, These files contain "N" in geoSystem,
>> which I believe is not valid, and should be
>> removed (default is Northern Hemisphere, in
>> the standard, I believe. "S" can be
>> specified?not in this case).
>>
>> Is there a tool which hasn?t been changed
>> which is
>>
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>
>
> --
> *Leonard Daly*
> 3D Systems & Cloud Consultant
> LA ACM SIGGRAPH Past Chair
> President, Daly Realism - /Creating the Future/
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--
*Leonard Daly*
3D Systems & Cloud Consultant
LA ACM SIGGRAPH Past Chair
President, Daly Realism - /Creating the Future/
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