[x3d-public] Inconsistencies in the draft for 4.1

[Don Brutzman]

Holger, thanks for these excellent comments on recent specification draft
editing.

I expect to start working on them later this week.  Will report back here,
also ensuring that these issues are tracked satisfactorily using Mantis.

   - Mantis 1510: X3D Architecture 4.1 draft specification errata
   - https://mantis.web3d.org/view.php?id=1510

all the best, Don

On Mon, Aug 18, 2025 at 4:52 AM Holger Seelig via x3d-public <
x3d-public at web3d.org> wrote:

> Inconsistencies in the draft for 4.1
>
> * Immersive profile, Full profile, MedicalInterchange profile include now
> the new FontFamily node but the level for the Text component in these
> profiles is still 1 but should be 2
>
> * There is now a new Tangent node, which can be child of a lot of geometry
> nodes, but should be a possible child of even more nodes, still missing a
> tangent field: ElevationGrid, PointSet, IndexedLineSet, LineSet. Why? All
> these nodes also have a normal field and can be affected by lighting and
> shading with Material or PhysicalMaterial (probably with a normalTexture
> which then requires a Tangent node). Example of lines and points with
> normals and shading:
> https://create3000.github.io/x_ite/laboratory/gltf-sample-viewer/?url=https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Models/master/2.0/PrimitiveModeNormalsTest/glTF/PrimitiveModeNormalsTest.gltf
>
> * LayoutGroup is now of type X3DNode but specification says: "Thus, a
> LayoutGroup can only be a child of a LayoutLayer node or another
> LayoutGroup node.“ But LayoutGroup children/addChildren/removeChildren only
> accept X3DChildNode which in turn does not include the LayoutGroup itself
> anymore.
>
> I think some things can be easily fixed, others require further
> discussion, but it's better to know all of this.
>
> Daft for 4.1:
> https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4.1-CD/
>
> Best regards
> Holger
>
> —
> Holger Seelig
> Leipzig, Germany
>
> holger.seelig at yahoo.de
> https://create3000.github.io/x_ite/
> https://patreon.com/X_ITE
>
>
>
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