[x3d-public] X3D regexes for colorRGBA, image need work

[Andreas Plesch]

I started from scratch and came up with this regex:

https://regex101.com/r/R3LXnN/1/tests

I also added a tricky unit test case which has 10e-3 as a valid but
hard to validate value. I cannot see how a regex can catch that but
still try to enforce the <=1.0 condition.

Similary, 0.0001e+3 would be hard to validate but valid even though
unusual. Currently, the regex above does not allow for any positive
exponents.

So perhaps the regex should not try and just accept all numbers with
scientific notation, regardless of their value ? Currently, the regex
is strict and will only <= 1.0 values.

-Andreas


On Sat, Jul 21, 2018 at 1:18 PM <x3d-public-request at web3d.org> wrote:
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>    1. Re: X3D regexes for colorRGBA, image need work (Don Brutzman)
>
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 21 Jul 2018 10:17:10 -0700
> From: Don Brutzman <brutzman at nps.edu>
> To: X3D Graphics public mailing list <x3d-public at web3d.org>
> Subject: Re: [x3d-public] X3D regexes for colorRGBA, image need work
> Message-ID: <5f45b810-826f-9182-21b0-8873f0aa5f4a at nps.edu>
> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>
> following Andreas' earlier example, have added some regex tests for SFColorRGBA to regex101.com (it allows login using github account).
>
> SFColorRGBA tests for default value pass but illegal values (including empty value) are incorrectly accepted, leading to RED test failure.  screenshot attached, clearly something is awry.
>
> https://regex101.com/r/sy4qJ7/1
>
> http://www.web3d.org/specifications/X3dRegularExpressions.html#SFColorRGBA
>
> On 6/28/2018 8:45 PM, Don Brutzman wrote:
> > Newly installed X3DJSAIL tests reveal:
> >
> > SFColorRGBAObject.initialize() problem: failed to match default value DEFAULT_VALUE [F at 481ba2cf
> > MFColorRGBAObject.initialize() problem: failed to match default value DEFAULT_VALUE [F at 12d2ce03
> > SFImageObject.initialize() problem: failed to match default value DEFAULT_VALUE [I at 6239aba6
> > MFImageObject.initialize() problem: failed to match default value DEFAULT_VALUE [I at 4f3bbf68
> >
> > Regexes can be found in schema documentation for each? Simple type at
> >
> > http://www.web3d.org/specifications/X3dSchemaDocumentation4.0/x3d-4.0.html
> >
> > and further documented at
> >
> > http://www.web3d.org/specifications/X3dRegularExpressions.html#SFColorRGBA
> > http://www.web3d.org/specifications/X3dRegularExpressions.html#SFImage
> >
> > Anyone want to tackle these?
> 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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-- 
Andreas Plesch
Waltham, MA 02453