[x3d-public] MFString quoting [was: interesting sample]

[yottzumm at gmail.com]

I do have a problem with the JSON encoding for the attached file (translated by X3dToJson.xslt).  Let me know if you think otherwise.  Look at all the \\\\\.

John

Sent from Mail for Windows 10

From: Andreas Plesch
Sent: Wednesday, April 26, 2017 5:21 PM
To: John Carlson
Cc: Don Brutzman; X3D Graphics public mailing list
Subject: Re: [x3d-public] MFString quoting [was: interesting sample]


On Wed, Apr 26, 2017 at 3:55 PM, <yottzumm at gmail.com> wrote:
It’s
 
http://x3dgraphics.com/slidesets/X3dForWebAuthors/Chapter02GeometryPrimitives.pdf
 
Got caught in the grand renaming.  Also the parent page is wrong.

Thanks.
Page 28 in the pdf shows the http://x3dgraphics.com/examples/X3dForWebAuthors/Chapter02-GeometryPrimitives/TextSpecialCharactersIndex.html example and confirms that cobweb and x3dom render as intended. However, TextSpecialCharactersIndex.html needs to be adjusted so it displays &amp instead of & , for example. So probably 

ampersand & is &amp;

 in the html
needs to become

ampersand & is &amp;amp;
to show the correct x3d on the web page.
-Andreas
 
 
John
 
Sent from Mail for Windows 10
 
From: Andreas Plesch
Sent: Wednesday, April 26, 2017 3:12 PM
To: Don Brutzman
Cc: X3D Graphics public mailing list
Subject: Re: [x3d-public] MFString quoting [was: interesting sample]
 
Hi Don,
 
Date: Wed, 26 Apr 2017 10:37:54 -0700
From: Don Brutzman <brutzman at nps.edu>

Good discussion, and perhaps document clarity can be improved by additional prose and further examples.  Several mantis issues have suggested that.

However that specification document - XML encoding for X3D - isn't wrong, per se.  Characters " and " are equivalent in XML, and that is why each of the proposed example variants actually work.

Further if we even tried to distinguish between special-character representations in the X3D XML encoding, all XML parsers would ignore such distinctions.

Lots more detail on handling string characters available in

        _X3D for Web Authors_
        http://x3dgraphics.com

        Geometry Part 1: Primitives
        http://x3dgraphics.com/slidesets/X3dForWebAuthors/Chapter02-GeometryPrimitives.pdf
 
"Not found". The pdf does not seem to be available anymore ?
 
 
        X3D Example Archives: X3D for Web Authors, Chapter 02 Geometry Primitives (3 scenes)
        http://x3dgraphics.com/examples/X3dForWebAuthors/Chapter02-GeometryPrimitives
 
http://x3dgraphics.com/examples/X3dForWebAuthors/Chapter02-GeometryPrimitives/TextSpecialCharactersIndex.html
 
First I thought both the cobweb and x3dom rendering are incorrect. But then I saw that for the x3dom encoding, all original ampersands from entities first characters got turned into a separate & entity:
 
<Text DEF='DefaultText' string='"Character entity substitutions:"         "empty string \"\" skips a line:"         ""         "apostrophe  '  is &apos;"          "ampersand & is &amp;"         "quote mark  \"  is &quot;"         "backslash \\ is X3D escape character"         "double backslash \\\\ is X3D backslash \\ character"         "Pi Π is &#928; XML character entity"'>
 
which I think makes the x3dom rendering correct.
 
It turns out the same conversion is happening to the .x3d file as well: http://x3dgraphics.com/examples/X3dForWebAuthors/Chapter02-GeometryPrimitives/TextSpecialCharacters.x3d
 
If the cobweb (and x3dom) rendering is the intended rendering, then the html on
 http://x3dgraphics.com/examples/X3dForWebAuthors/Chapter02-GeometryPrimitives/TextSpecialCharactersIndex.html
 
should be probably changed to show the text MFString as above or here: http://x3dgraphics.com/examples/X3dForWebAuthors/Chapter02-GeometryPrimitives/TextSpecialCharactersX3dom.xhtml
 
 
Andreas
 
 



-- 
Andreas Plesch
39 Barbara Rd.
Waltham, MA 02453

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