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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>Thanks John, your suggestions pretty closely match mine. Workflow seems external to X3D4 pathways, typically performed offline. It seems sensible to avoid intermediate-format conversions if possible, since that offers more potential for “lost in translation” conversion problems.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-bottom:solid windowtext 1.5pt;padding:0in 0in 1.0pt 0in'><p class=MsoNormal style='border:none;padding:0in'>Please note that X3D4 specification only supports glTF loading and rendering, not .obj files. Specification excerpts follow:<o:p></o:p></p><p class=MsoNormal style='border:none;padding:0in'><o:p> </o:p></p></div><p class=MsoNormal><o:p> </o:p></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l2 level1 lfo4'>X3D4 Architecture, Networking component, 9.4.2 Inline<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l2 level1 lfo4'>https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/components/networking.html#Inline<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l2 level1 lfo4'>The run-time system can support any number of 3D model resource types as long as those follow the abstract model definition (see 2.[RFC2077]), provide a registered content type ( e.g., model/x3d-xml, model/gltf-bin, model/stl, etc.), and can be determined with some form of content negotiation (see 2.[RFC2616]). The run-time system must support at least one X3D type ( e.g., model/x3d-xml) but can also support and negotiate any number of X3D encodings and (optionally) non-X3D representation formats. Support for loading glTF assets (see 2.[GLTF]) also requires support for Shape component level 2 and Lighting component level 4.<o:p></o:p></li></ul><p class=MsoNormal><o:p> </o:p></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l2 level1 lfo4'>X3D4 Architecture, Networking component, Table 9.3 — Networking component support levels<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l2 level1 lfo4'>https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/components/networking.html#t-supportLevels<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l2 level1 lfo4'>Level 4, prerequisites Core 1 and Grouping 1, Nodes/Features and Support:<o:p></o:p></li></ul><p class=MsoNormal><o:p> </o:p></p><table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 summary="Support levels" width=830 style='width:622.2pt;background:white;border-collapse:collapse;border:none'><tr style='height:133.15pt'><td style='border:groove windowtext 3.0pt;padding:6.0pt 6.0pt 6.0pt 6.0pt;height:133.15pt'><p class=MsoNormal style='margin-bottom:13.5pt'><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:black'>Model support<o:p></o:p></span></p></td><td style='border:groove windowtext 3.0pt;border-left:none;padding:6.0pt 6.0pt 6.0pt 6.0pt;height:133.15pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:black'>Support for glTF models in <i>Inline</i> nodes, in .gltf (</span><span style='font-size:9.0pt;font-family:"Courier New";color:black'>model/gltf+json</span><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:black'>) and .glb (</span><span style='font-size:9.0pt;font-family:"Courier New";color:black'>model/gltf-binary</span><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:black'>) formats.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:black'>Requires support for Shape component level 2 and Lighting component level 3.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:black'>Minimum required glTF support:<o:p></o:p></span></p><ul style='margin-top:0in' type=disc><li class=MsoNormal style='color:black;margin-top:3.0pt;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo5'><span style='font-size:10.0pt;font-family:"Verdana",sans-serif'>transformation hierarchy,<o:p></o:p></span></li><li class=MsoNormal style='color:black;margin-top:3.0pt;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo5'><span style='font-size:10.0pt;font-family:"Verdana",sans-serif'>meshes,<o:p></o:p></span></li><li class=MsoNormal style='color:black;margin-top:3.0pt;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo5'><span style='font-size:10.0pt;font-family:"Verdana",sans-serif'>physical materials,<o:p></o:p></span></li><li class=MsoNormal style='color:black;margin-top:3.0pt;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo5'><span style='font-size:10.0pt;font-family:"Verdana",sans-serif'>loading of external binary data referenced from .gltf files ( <i>e.g.</i>, for vertex coordinates).<o:p></o:p></span></li></ul></td></tr></table><p class=MsoListParagraph><o:p> </o:p></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo5'>X3D4 Architecture, Clause 2 Normative references<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo5'>https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/references.html#GLTF<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo5'>GL Transmission Format (glTF) Specification, The Khronos Group, Version 2.0, 2021.<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo5'>https://github.com/KhronosGroup/glTF/tree/master/specification/2.0<o:p></o:p></li></ul><div style='mso-element:para-border-div;border:none;border-bottom:solid windowtext 1.5pt;padding:0in 0in 1.0pt 0in'><p class=MsoNormal style='border:none;padding:0in'><o:p> </o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal>Careful scrutiny of the prose above should reveal that we do not forbid browser support for other formats. A premier example browser which not only loads and displays numerous formats but typically can also save back out as X3D or VRML:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo5'><span style='font-size:10.0pt'>Castle Game Engine, view3dscene 4.2.0<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo5'><span style='font-size:10.0pt'>view3dscene is a viewer for many 3D model formats: glTF, X3D, VRML, Collada, 3DS, MD3, Wavefront OBJ, STL and (2D) Spine JSON and sprite sheets (in CGE, Cocos2d, Starling XML formats).<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo5'><span style='font-size:10.0pt'>4.2. Converting to X3D<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo5'><span style='font-size:10.0pt'>https://castle-engine.io/view3dscene.php#section_converting<o:p></o:p></span></li></ul><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>Our master list of conversion and import/export tools follow. Additions and updates always welcome, anything else out there that anyone wants to recommend?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo5'><span style='font-size:10.0pt'>X3D Resources: Conversions and Translation Tools<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo5'><span style='font-size:10.0pt'>https://www.web3d.org/x3d/content/examples/X3dResources.html#Conversions<o:p></o:p></span></li></ul><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo5'><span style='font-size:10.0pt'>X3D Resources: Export and Import by Applications<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo5'><span style='font-size:10.0pt'>https://www.web3d.org/x3d/content/examples/X3dResources.html#Export<o:p></o:p></span></li></ul><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>Have fun with Castle Game Engine view3dscene! 8)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>all the best, Don<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>-- <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>X3D graphics, virtual worlds, Navy robotics https://</span> <span style='font-size:10.0pt;font-family:"Courier New"'>faculty.nps.edu/brutzman<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> John Carlson <yottzumm@gmail.com> <br><b>Sent:</b> Monday, February 20, 2023 6:01 PM<br><b>To:</b> Brutzman, Donald (Don) (CIV) <brutzman@nps.edu><br><b>Cc:</b> X3D Public Mailing List (x3d-public@web3d.org) <x3d-public@web3d.org><br><b>Subject:</b> Re: [x3d-public] got Three.js and X3D?<o:p></o:p></p></div></div><div><div><div><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal>My tendency would be to go from X3D to glTF or COLLADA to glTF and then load glTF into three.js. Also x3d to OBJ looks like a thing with aopt.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I believe both OBJ and glTF are supported by X3d4.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>OBJ is native to three.js<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>If you find a tessellation library in all of this, that would good to know.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>John<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div><div><div><div><div><p class=MsoNormal>On Mon, Feb 20, 2023 at 5:47 PM Brutzman, Donald (Don) (CIV) <<a href="mailto:brutzman@nps.edu" target="_blank">brutzman@nps.edu</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Three.js is an independently developed Javascript library. Wondering about relationship (if any) for X3D use. Some X3D folks have used it in the past but am not seeing any common ground at<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:47.4pt;text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><a href="https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fthreejs.org%2Fdocs%2F%23manual%2Fen%2Fintroduction%2FLoading-3D-models&data=05%7C01%7Cbrutzman%40nps.edu%7C81a7bda9219a40c17d3108db13af7543%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C638125416555828348%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=Mka63OvSlaulJZnB%2BXUZsDq51AB%2BIdgXIUOqvRJDbpM%3D&reserved=0" target="_blank">https://threejs.org/docs/#manual/en/introduction/Loading-3D-models</a><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Searching a little more, found some older posts:<o:p></o:p></p><ul type=disc><li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l4 level1 lfo2'><a href="https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fdividab%2Fthree-x3d-loader&data=05%7C01%7Cbrutzman%40nps.edu%7C81a7bda9219a40c17d3108db13af7543%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C638125416555828348%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=8NTGzV3KouU72GIkYSnPzG%2FwLNabVN21np1ZBcKiA%2Fk%3D&reserved=0" target="_blank">https://github.com/dividab/three-x3d-loader</a><o:p></o:p></li></ul><ul type=disc><li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l3 level1 lfo3'><a href="https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F20810737%2Fimporting-x3d-files-into-three-js&data=05%7C01%7Cbrutzman%40nps.edu%7C81a7bda9219a40c17d3108db13af7543%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C638125416555828348%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=aLRG4vceNU9S867SdbkZ8y5dJ1oQ2tVn5B3kczmofPI%3D&reserved=0" target="_blank">https://stackoverflow.com/questions/20810737/importing-x3d-files-into-three-js</a><o:p></o:p></li></ul><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> Apparent overlap: capability for loading glTF models.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> Just curious, thanks for all opinions. If there is something worth including on X3D Resources, will add it.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Courier New"'>all the best, Don</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Courier New"'>-- </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Courier New"'>Don Brutzman Naval Postgraduate School, Code USW/Br <a href="mailto:brutzman@nps.edu" target="_blank">brutzman@nps.edu</a></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Courier New"'>Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Courier New"'>X3D graphics, virtual worlds, Navy robotics https://</span> <span style='font-size:10.0pt;font-family:"Courier New"'><a href="http://faculty.nps.edu/brutzman" target="_blank">faculty.nps.edu/brutzman</a></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div></div><p class=MsoNormal>_______________________________________________<br>x3d-public mailing list<br><a href="mailto:x3d-public@web3d.org" target="_blank">x3d-public@web3d.org</a><br><a href="http://web3d.org/mailman/listinfo/x3d-public_web3d.org" target="_blank">http://web3d.org/mailman/listinfo/x3d-public_web3d.org</a><o:p></o:p></p></blockquote></div></div></div></div></div></body></html>