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Dick and I worked on suggested prose for X3D 4.1 with details continuing in Mantis 1490 below.</div>
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Review request:</div>
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<div class="elementToProof">X3D 4.1 Architecture (draft), 15 Text component, 15.4.1 FontStyle</div>
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<div class="elementToProof"><a href="https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4.1-CD//Part01/components/text.html#FontStyle" id="LPlnk" class="OWAAutoLink">https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4.1-CD//Part01/components/text.html#FontStyle</a></div>
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Improvements:</div>
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<div class="elementToProof">Include all <span style="background-color: rgb(255, 255, 0);">
X3DURLObject </span>fields,</div>
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<span style="background-color: rgb(255, 255, 0);"> SFTime [in,out] autoRefresh 0.0 [0,∞)</span></div>
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<span style="background-color: rgb(255, 255, 0);"> SFTime [in,out] autoRefreshTimeLimit 3600.0 [0,∞)</span></div>
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<span style="background-color: rgb(255, 255, 0);"> SFString [in,out] description ""</span></div>
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<span style="background-color: rgb(255, 255, 0);"> SFBool [in,out] load TRUE</span></div>
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<span style="background-color: rgb(255, 255, 0);"> MFString [in,out] url [] [URI]</span></div>
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<div class="elementToProof">Decided to NOT overload functionality of <i>family </i>
field by adding file names (sorry Holger! adjusting your implementation will likely be simple in comparison)</div>
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<div class="elementToProof">New prose:</div>
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<span style="background-color: rgb(255, 255, 0);">The <i>url</i> field is optional and can refer to a relative or online address for a font library that contains one or more font definitions. An empty
<i>url</i> list indicates that the default set of fonts provided by the browser are used. If present, only the first active font library retrieved from the
<i>url</i> list shall be used. Individual font library files can be used by multiple FontStyle nodes in a scene. Each font file only needs to be loaded once per session.</span></div>
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<span style="background-color: rgb(255, 255, 0);">X3D browsers shall support WOFF (MIME type
<code>application/x-font-woff</code>) (see <a href="https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4.1-CD//Part01/references.html#W3C_WOFF" id="OWA4a9800f9-0fbf-770b-de3e-e998733183a7" class="OWAAutoLink">
W3C WOFF File Format</a>). Support for the OpenType file format (MIME type <code>
application/x-font-opentype</code>) (see <a href="https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4.1-CD//Part01/bibliography.html#OPENTYPE" id="OWA0b6072c9-0900-2aae-fa18-88e909b09c35" class="OWAAutoLink">
OpenType Specification</a>) and TrueType file format (MIME type <code>application/x-font-truetype</code>) (see
<a href="https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4.1-CD//Part01/references.html#I14496_22" id="OWAd7e5e7c4-348f-7d3a-733c-d900916430a7" class="OWAAutoLink">
ISO/IEC 14496-22 Open Font Format</a>) is also recommended.</span></div>
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<span style="background-color: rgb(255, 255, 0);">Security, licensing, and copyright/usage permissions are handled via the exposure of a font file itself.</span></div>
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<span style="background-color: rgb(255, 255, 0);">Support for the <i>autoRefresh</i>,
<i>autoRefreshTimeLimit</i>, and <i>load</i> fields is optional.</span></div>
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<span style="background-color: rgb(255, 255, 0);">More details on the <i>autoRefresh</i>,
<i>autoRefreshTimeLimit</i>, <i>description</i>, <i>load</i>, and <i>url</i> fields are contained in
<a href="https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4.1-CD//Part01/components/networking.html#URLs" id="OWAd2386a10-2f86-660e-113b-eba01571f976" class="OWAAutoLink">
9.2.1 URLs, URNs and URIs</a>.</span></div>
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Looking it over, adding more functionality to FontStyle node seems to be unwise. Dick has an excellent proposal:</div>
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<span style="background-color: rgb(128, 255, 255);">TODO alternative approach: move all new functionality into a separate
<b>FontLibrary</b> node to avoid complicating FontStyle further. This also offers the ability to succinctly load multiple font libraries in a given scene. The expense of defining a new node for X3D is offset by clearer distinction between X3D 4.0 and 4.1, also
simplifying model content significantly. </span></div>
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<span style="background-color: rgb(128, 255, 255);">Feedback is welcome.</span></div>
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Leaving existing FontStyle implementations alone probably avoids many unintended side effects. First law of engineering: "If it ain't broke, don't fix it."</div>
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Thanks for all review. It feels like we are finally converging on a straightforward approach to valuable future capabilities.</div>
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Have fun with X3D fonts! 😎</div>
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<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;"><br>
</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">all the best, Don</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">--</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">X3D graphics, virtual worlds, navy robotics https://faculty.nps.edu/brutzman</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;"> </span></p>
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<div dir="ltr" id="divRplyFwdMsg"><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><b>From:</b> Brutzman, Donald (Don) (CIV) <brutzman@nps.edu><br>
<b>Sent:</b> Monday, February 24, 2025 9:32 AM<br>
<b>To:</b> X3D <x3d-public@web3d.org><br>
<b>Cc:</b> Holger Seelig <holger.seelig@yahoo.de><br>
<b>Subject:</b> Re: [x3d-public] Open dyslexic and/or (unfortunately) comicsans fonts; draft X3D 4.1 prose for font files and libraries</span>
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Wow, really super Holger! 🙂</div>
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There was a conversation about this on x3d-public a few years back... We committed to adding it in X3D 4.1 and (if I recall correctly) also noted that adding a url field might enable usage of larger font files.</div>
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I've attempted to capture this candidate specification change in a Mantis issue. All review, feedback, and improvements are always welcome.</div>
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<div style="direction: ltr;">Mantis 1490 FontStyle handling of font files and font libraries</div>
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<div style="direction: ltr;"><a href="https://mantis.web3d.org/view.php?id=1490" id="OWA0e38a915-dfc6-1b38-c7d2-28e637bbcc1f" class="x_OWAAutoLink" data-auth="NotApplicable">https://mantis.web3d.org/view.php?id=1490</a></div>
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Description.</div>
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<div style="direction: ltr; text-align: left; line-height: 1.42857; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
A goal for X3D 4.1 is use of font files in FontStyle (see Mantis <span style="color: rgb(51, 122, 183);">
<a href="https://mantis.web3d.org/view.php?id=1464" id="OWAeefa40f7-d30b-3559-8237-28f1d1969cc2" class="x_OWAAutoLink" title="[assigned] candidate features for X3D 4.1" data-auth="NotApplicable" style="color: rgb(51, 122, 183);">0001464</a></span>).<br>
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Addition of individual-font files might be accomplished by listing the font file name in the FontStyle 'family' field.<br>
<br>
Referencing different fonts in a single combined font library file may require an additional field, for example 'url'. In general the use of a font library may be preferred, but repeatedly run-time retrieval of a font library is not desirable, since the file
might be quite large and rarely changing. This might be noted in the specification prose, e.g.<br>
<br>
- "MFString [in,out] url [] [URI]"<br>
- "The family field may list a specific font file. A font listed in the family field may be provided by a corresponding font library."<br>
- "The url field may refer to a font library. Font libraries can be used by multiple FontStyle nodes in a scene and need only be loaded once per session."<br>
<br>
Support levels: add "Level 2, FontStyle, support for font files in family field and support for font libraries via url field ."<br>
<br>
Security, licensing, and copyright/usage issues are handled via the exposure of the font file itself. If retrievable (locally or online) then proper access is presumably handled separately.</div>
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Additional information.</div>
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<div style="direction: ltr; text-align: left; line-height: 1.42857; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
- X3D 4.1 (draft) Architecture, 15 Text component, 15.4.1 FontStyle<br>
- <span style="color: rgb(51, 122, 183);"><a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/text.html#FontStyle" id="OWA3e739ff0-86a5-aa34-7783-1aa6f5b4d30c" class="x_OWAAutoLink" data-auth="NotApplicable" style="color: rgb(51, 122, 183);">https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/text.html#FontStyle</a></span><br>
<br>
- X3D 4.1 (draft) Architecture, 15 Text component, 15.4.2 Text<br>
- <span style="color: rgb(51, 122, 183);"><a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/text.html#Text" id="OWAd59a3e47-0fa9-a558-08af-f3d3e0d35019" class="x_OWAAutoLink" data-auth="NotApplicable" style="color: rgb(51, 122, 183);">https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/text.html#Text</a></span><br>
<br>
- X3D 4.1 (draft) Architecture, 15 Text component, 15.5 Support levels<br>
- <span style="color: rgb(51, 122, 183);"><a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/text.html#SupportlLevels" id="OWAe32c21e2-0d22-9f10-5ab4-f63a9ebbcffe" class="x_OWAAutoLink" data-auth="NotApplicable" style="color: rgb(51, 122, 183);">https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/text.html#SupportlLevels</a></span></div>
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Have fun with X3D Text! :)</div>
<div id="x_Signature" class="x_elementToProof">
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;"><br>
</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">all the best, Don</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">--</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">X3D graphics, virtual worlds, navy robotics https://faculty.nps.edu/brutzman</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;"> </span></p>
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<div dir="ltr" id="x_divRplyFwdMsg"><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><b>From:</b> x3d-public <x3d-public-bounces@web3d.org> on behalf of Holger Seelig via x3d-public <x3d-public@web3d.org><br>
<b>Sent:</b> Monday, February 24, 2025 2:48 AM<br>
<b>To:</b> X3D <x3d-public@web3d.org><br>
<b>Cc:</b> Holger Seelig <holger.seelig@yahoo.de><br>
<b>Subject:</b> Re: [x3d-public] Open dyslexic and/or (unfortunately) comicsans fonts</span>
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<div style="direction: ltr;">With X_ITE you can use a URL in the family field of a FontStyle node to specify a path to a custom font file. Provided you have one of these fonts, it should be very easy:</div>
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<div style="direction: ltr;"><?xml version="1.0" encoding="UTF-8"?></div>
<div style="direction: ltr;"><!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 4.0//EN" "https://www.web3d.org/specifications/x3d-4.0.dtd"></div>
<div style="direction: ltr;"><X3D profile='Interchange' version='4.0' xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-4.0.xsd'></div>
<div style="direction: ltr;"> <head></div>
<div style="direction: ltr;"> <component name='Text' level='1'/></div>
<div style="direction: ltr;"> </head></div>
<div style="direction: ltr;"> <Scene></div>
<div style="direction: ltr;"> <Transform DEF='Text'></div>
<div style="direction: ltr;"> <Shape></div>
<div style="direction: ltr;"> <Appearance></div>
<div style="direction: ltr;"> <Material/></div>
<div style="direction: ltr;"> </Appearance></div>
<div style="direction: ltr;"> <Text</div>
<div style="direction: ltr;"> string='"3D Text"'></div>
<div style="direction: ltr;"> <FontStyle</div>
<div style="direction: ltr;"> family='"path/to/your/font.otf", "SERIF"'/></div>
<div style="direction: ltr;"> </Text></div>
<div style="direction: ltr;"> </Shape></div>
<div style="direction: ltr;"> </Transform></div>
<div style="direction: ltr;"> </Scene></div>
<div style="direction: ltr;"></X3D></div>
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<div style="direction: ltr;">Supported File Formats:</div>
<div style="direction: ltr;"><a href="https://create3000.github.io/x_ite/components/text/fontstyle/#supported-file-formats" id="OWA6db05638-802a-884e-41fd-5de7a9e5a88f" class="OWAAutoLink" originalsrc="https://create3000.github.io/x_ite/components/text/fontstyle/#supported-file-formats" data-auth="NotApplicable">https://create3000.github.io/x_ite/components/text/fontstyle/#supported-file-formats</a></div>
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<div style="direction: ltr;">Best regards,</div>
<div style="direction: ltr;">Holger</div>
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Holger Seelig</div>
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Leipzig, Germany</div>
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holger.seelig@yahoo.de</div>
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https://create3000.github.io/x_ite/</div>
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<blockquote>
<div style="direction: ltr;">Am 24.02.2025 um 11:09 schrieb John Carlson via x3d-public <x3d-public@web3d.org>:</div>
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<div style="direction: ltr;">If someone knows how change the fonts of the standards to OpenDyslexic or ComicSans, that might be a great accessibility experiment. _______________________________________________<br>
x3d-public mailing list<br>
x3d-public@web3d.org<br>
http://web3d.org/mailman/listinfo/x3d-public_web3d.org</div>
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