<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Hi John,<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>What it means is that there is a problem with the XML Schema, or the XSLT stylesheet, since currently the Object Model is derived from the schema by autogeneration using XSLT.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>The ParticleSystem node is derived from <i>X3DShapeNode</i>. The X3DShapeNode interface has a ‘geometry’ field. This is reflected in the XML schema (V3.3) which lists the ‘geometry’ field. However, reviewing this the ‘geometry’ field is placed inside double <appinfo> elements. Why? Because both nodes derived from <i>X3DShapeNode</i>, i.e. Shape and ParticleSystem, also have the ‘geometry’ field included. So the idea of the double <appinfo> wrapping is that it shouldn’t be picked up by the XSLT stylesheet, which it obviously is. Hence it is being included twice, once from <i>X3DShapeNode</i>, and once from ParticleSystem. <o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Having said that, I looked at Shape in the Object Model, and only found one ‘geometry’ field. So maybe it’s not quite that simple. Obviously needs further investigation.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Thanks John,<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Roy<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> John Carlson [mailto:yottzumm@gmail.com] <br><b>Sent:</b> 15 May 2017 01:47<br><b>To:</b> Roy Walmsley <roy.walmsley@ntlworld.com>; Don Brutzman NPS <don.brutzman.nps@gmail.com>; X3D Graphics public mailing list <x3d-public@web3d.org><br><b>Subject:</b> geometry field mentioned twice in ParticleSystem node in Object Model.<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>What does it mean when a field is mentioned twice in the object model?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Ref ParticleSystem.geometry:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> <field type="SFNode"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> accessType="inputOutput"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> name="geometry"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> default="NULL"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> acceptableNodeTypes="X3DGeometryNode"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> inheritedFrom="X3DShapeNode"/><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> <field type="SFNode"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> accessType="inputOutput"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> name="geometry"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> default="NULL"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> acceptableNodeTypes="X3DGeometryNode"><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> <componentInfo name="ParticleSystems" level="3"/><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> </field><o:p></o:p></span></p></div></body></html>