[x3d-public] Unexpected behaviour of X3D Validator

Thu May 31 14:04:57 PDT 2018

Hi everyone, 

Thank you for all the suggestions and prompt feedback. Here’s a status update:

- I’m pretty sure that the behavior with Safari 10.1.2 is related to the size of the X3D file. Anything below 10Mb works fine. Anything above doesn’t. This took me a while to figure out, because if I try to load a model <10Mb *after* trying to load a model >10Mb (and failing to do so), the error remains … and only disappears if I restart the browser. So the answer is: stay smaller than 10Mb if I want things to work ok in this older Safari version. A quick internet search also revealed that there indeed used to be some sort of a 10Mb limit for Safari, at some point.

- The fact that it works in a more recent Safari version is then probably an indication that this 10Mb limit has changed/been lifted - not quite sure just yet.

- As suggested, I installed X3D-edit, and tested the x3d file. The reported string errors popped up, plus a few warnings about missing/wrong “meta” fields, and the Collision entry. I fixed it all, and am now left with this:

--------- Commence validation checks for shapley_very_small.x3d ---------

Performing well-formed XML check...
Checking file:/Users/fvogt/Projects/current/Misc/INAF/Shapley_3D/dev/shapley_very_small.x3d...
Well-formed XML check: pass

Performing DOCTYPE check...
[Error] [X3dDoctypeChecker] failure: no valid XML declaration found in scene!
<?xml version="1.0" encoding ="UTF-8"?>
<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.3//EN" "http://www.web3d.org/specifications/x3d-3.3.dtd">
usage: java X3dDoctypeChecker sceneName.x3d [-verbose | -setFinalDTD | -setTransitionalDTD]

Performing DTD validation...
Checking file:/Users/fvogt/Projects/current/Misc/INAF/Shapley_3D/dev/shapley_very_small.x3d...
XML DTD validation: pass

Performing X3D schema validation...
Checking file:/Users/fvogt/Projects/current/Misc/INAF/Shapley_3D/dev/shapley_very_small.x3d...
Referenced entity at "nbres:/org/web3d/x3d/externals/schemas/x3d-3.3-Web3dExtensionsPublic.xsd".
XML schema validation: pass

Performing X3D regular expression (regex) values check...

Performing X3dToClassicVrml.xslt conversion check...

Performing X3D Schematron check...

———— Validation checks complete for shapley_very_small.x3d ---------

Not sure why the doctype still fails the verification. For reference, the “very_small” file is now <500kb, suggesting that this error is not related to the file size. 

I’m ok to continue with my project now that I’ve figured out why Safari fails. But I’d still be keen to know why the validation fails. If anyone feels like playing around with the file, it is here: http://www.sc.eso.org/~fvogt/Shapley/shapley_very_small.x3d <http://www.sc.eso.org/~fvogt/Shapley/shapley_very_small.x3d>

Cheers,
Frédéric

> On May 31, 2018, at 17:27, Andreas Plesch <andreasplesch at gmail.com> wrote:
> 
> I can confirm the validator behaviour. Perhaps the 'small' x3d is
> still too large to be processed although the no DTD version is
> actually processed.
> 
> https://gist.githubusercontent.com/andreasplesch/973d94d6e88db471e9473b0af78a5a67/raw/8d8f0aa7b397973f42ee74f62f200a3849f92d5c/Shapley_small_tidied.x3d
> 
> is the result of the no dtd x3d after being processed by the
> validator, plus the MFString fixes noticed by Leonard.
> 
> x3dom is less strict about quoting in text node string field. This is
> why x3dom works for your nice ShaSS 3d page. No plugins needed.
> 
> Not sure what the Safari 10.1.2 issue could be. Sometimes you get
> these no scene errors if the html/xml parser had problems, often with
> self-closing tags which work only in xml. Did the inlined x3d used to
> work in this version of Safari ? Other messages in the browser
> console, or x3dom debug console (press 'd') ? Does the inline tutorial
> example on x3dom.org work ?
> 
> -Andreas
> 
>> Date: Thu, 31 May 2018 11:19:44 -0300
>> From: Fr?d?ric Vogt <frederic.vogt at alumni.anu.edu.au>
>> To: x3d-public at web3d.org
>> Subject: [x3d-public] Unexpected behaviour of X3D Validator
>> 
>> Dear X3D gurus,
>> 
>> I am once again trying to assemble an astro-X3D model using the mayavi python module, here: http://www.sc.eso.org/~fvogt/Shapley/shapley.html <http://www.sc.eso.org/~fvogt/Shapley/shapley.html>
>> 
>> I am on Mac OS X Yosemite (still?), and can load the model just fine with:
>> 
>> Firefox 60.0.1
>> Chrome 67.0.3396.62
>> 
>> However, the model does *not* load with:
>> 
>> Safari 10.1.2 -> I get ?ERROR: no scene in resource? message in the development console right after it loads the underlying X3D file.
>> 
>> I have confirmed that under Mac OS X High Sierra, with Safari 11.1, it does works, though!
>> 
>> So I started worrying about possible formatting issues with my X3D file based on this old thread: https://sourceforge.net/p/x3dom/mailman/message/32684050/ <https://sourceforge.net/p/x3dom/mailman/message/32684050/>
>> After all, I already know that the VTK X3D exporter is far from being perfect! http://fpavogt.github.io/x3d-pathway/dices.html <http://fpavogt.github.io/x3d-pathway/dices.html>
>> 
>> Which brings me to my question about the X3D Validator, which I tried to use to check for any bug in my model: https://savage.nps.edu/X3dValidator <https://savage.nps.edu/X3dValidator>
>> 
>> When I load a smaller version of the X3D model (I can?t load the actual model, likely too big), I get an error because of the lack of DTD info. But when I try to include
>> 
>> <!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.3//EN" "http://www.web3d.org/specifications/x3d-3.3.dtd">
>> <X3D profile='Immersive' version='3.3'
>>      xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance'
>>      xsd:noNamespaceSchemaLocation =? http://www.web3d.org/specifications/x3d-3.3.xsd '>
>> 
>> then the X3D Validator returns me an empty page.
>> 
>> What am I doing wrong here ?
>> 
>> The file in question (if anyone is keen to try it out themselves) is: http://www.sc.eso.org/~fvogt/Shapley/shapley_small.x3d <http://www.sc.eso.org/~fvogt/Shapley/shapley_small.x3d>
>> 
>> Cheers,
>> Fr?d?ric
>> 
>> 
>> 
>> 
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> 
> 
> 
> -- 
> Andreas Plesch
> Waltham, MA 02453

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