[x3d-public] got Three.js and X3D?

Tue Feb 21 02:26:42 PST 2023

I would like to announce that X_ITE now also has support for .glTF, .glb, .obj, .stl, and .svg. 😀

https://create3000.github.io/x_ite/#supported-file-formats

As well as importing files, X_ITE can output XML, VRML and also JSON now by implementing toXMLString, toJSONString and toVRMLString.

https://create3000.github.io/x_ite/reference/scene-services#string-tovrmlstring-options

Best regards,
Holger

> Am 21.02.2023 um 07:39 schrieb Brutzman, Donald (Don) (CIV) <brutzman at nps.edu>:
> 
> 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.
>  
> Please note that X3D4 specification only supports glTF loading and rendering, not .obj files.  Specification excerpts follow:
>  
>  
> X3D4 Architecture, Networking component, 9.4.2 Inline
> https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/components/networking.html#Inline
> 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.
>  
> X3D4 Architecture, Networking component, Table 9.3 — Networking component support levels
> https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/components/networking.html#t-supportLevels
> Level 4, prerequisites Core 1 and Grouping 1, Nodes/Features and Support:
>  
> Model support
> 
> Support for glTF models in Inline nodes, in .gltf (model/gltf+json) and .glb (model/gltf-binary) formats.
> Requires support for Shape component level 2 and Lighting component level 3.
> Minimum required glTF support:
> transformation hierarchy,
> meshes,
> physical materials,
> loading of external binary data referenced from .gltf files ( e.g., for vertex coordinates).
>  
> X3D4 Architecture, Clause 2 Normative references
> https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/references.html#GLTF
> GL Transmission Format (glTF) Specification, The Khronos Group, Version 2.0, 2021.
> https://github.com/KhronosGroup/glTF/tree/master/specification/2.0
>  
>  
> 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:
>  
> Castle Game Engine, view3dscene 4.2.0
> 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).
> 4.2. Converting to X3D
> https://castle-engine.io/view3dscene.php#section_converting
>  
> Our master list of conversion and import/export tools follow.  Additions and updates always welcome, anything else out there that anyone wants to recommend?
>  
> X3D Resources: Conversions and Translation Tools
> https://www.web3d.org/x3d/content/examples/X3dResources.html#Conversions
>  
> X3D Resources: Export and Import by Applications
> https://www.web3d.org/x3d/content/examples/X3dResources.html#Export
>  
> Have fun with Castle Game Engine view3dscene!  8)
>  
> all the best, Don
> -- 
> Don Brutzman  Naval Postgraduate School, Code USW/Br        brutzman at nps.edu <mailto:brutzman at nps.edu>
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA    +1.831.656.2149
> X3D graphics, virtual worlds, Navy robotics https:// faculty.nps.edu/brutzman <http://faculty.nps.edu/brutzman>
>  
> From: John Carlson <yottzumm at gmail.com <mailto:yottzumm at gmail.com>> 
> Sent: Monday, February 20, 2023 6:01 PM
> To: Brutzman, Donald (Don) (CIV) <brutzman at nps.edu <mailto:brutzman at nps.edu>>
> Cc: X3D Public Mailing List (x3d-public at web3d.org <mailto:x3d-public at web3d.org>) <x3d-public at web3d.org <mailto:x3d-public at web3d.org>>
> Subject: Re: [x3d-public] got Three.js and X3D?
>  
> 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.
>  
> I believe both OBJ and glTF are supported by X3d4.
>  
> OBJ is native to three.js
>  
> If you find a tessellation library in all of this, that would good to know.
>  
> John
>  
> On Mon, Feb 20, 2023 at 5:47 PM Brutzman, Donald (Don) (CIV) <brutzman at nps.edu <mailto:brutzman at nps.edu>> wrote:
> 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
> ·     https://threejs.org/docs/#manual/en/introduction/Loading-3D-models <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>
> Searching a little more, found some older posts:
> https://github.com/dividab/three-x3d-loader <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>
> https://stackoverflow.com/questions/20810737/importing-x3d-files-into-three-js <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>
>  Apparent overlap: capability for loading glTF models.
>  Just curious, thanks for all opinions.  If there is something worth including on X3D Resources, will add it.
> all the best, Don
> -- 
> Don Brutzman  Naval Postgraduate School, Code USW/Br        brutzman at nps.edu <mailto:brutzman at nps.edu>
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA    +1.831.656.2149
> X3D graphics, virtual worlds, Navy robotics https:// faculty.nps.edu/brutzman <http://faculty.nps.edu/brutzman>
>  
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