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

Tue Feb 21 04:00:54 PST 2023

@Holger: Fantastic news!

Do you maybe have (or plan to have) a simple "online converter" using X_ITE
underneath, similar to e.g. https://castle-engine.io/convert.php ? Easy to
use for people who may not want to use X_ITE for rendering on their
webpage, but just want to convert from
https://create3000.github.io/x_ite/#supported-file-formats -> to X3D XML?

My personal reason for asking: People sometimes ask about using SVG with
Castle Game Engine, which we don't support (yet). Of course one can easily
convert SVG -> PNG... but with X_ITE, I understand you convert SVG -> X3D
nodes with geometry, so it remains 100% scalable. I would love to recommend
people "if you want to use SVG in CGE, as a full scalable geometry, go
ahead and use X_ITE converter to X3D on xxx".

Regards,
Michalis

wt., 21 lut 2023 o 11:27 Holger Seelig <holger.seelig at yahoo.de> napisał(a):

> 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
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA
> +1.831.656.2149
> X3D graphics, virtual worlds, Navy robotics https://
> faculty.nps.edu/brutzman
>
> *From:* John Carlson <yottzumm at gmail.com>
> *Sent:* Monday, February 20, 2023 6:01 PM
> *To:* Brutzman, Donald (Don) (CIV) <brutzman at nps.edu>
> *Cc:* X3D Public Mailing List (x3d-public at web3d.org) <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> 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
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA
> +1.831.656.2149
> X3D graphics, virtual worlds, Navy robotics https://
> faculty.nps.edu/brutzman
>
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