[x3d-public] Row/column-order in the SFMatrix*, MFMatrix* fields, I think X3DOM reading order contrasts to what spec says

John Carlson yottzumm at gmail.com
Sat Nov 22 17:15:08 PST 2025


Michalis, from the presentation below, it looks like X3DOM is doing the
wrong thing. Per the X3D specification, AFAIK, very little should be in the
first three cells of the bottom row.

It would be good to collect SFMatrix4f and SFMatrix4d instances in the
archive.

On Sat, Nov 22, 2025 at 6:40 PM Michalis Kamburelis via x3d-public <
x3d-public at web3d.org> wrote:

>
> I have been testing MatrixTransform in X3DOM, and I think X3DOM has a bug
> (just like CGE did, a month ago!) and it expects matrix in transposed
> order. See testcase on
> https://github.com/castle-engine/demo-models/blob/master/x3d/matrix_transform_x3dom.html --
> only by transposing a matrix I was able to get the correct result.
>
> Regards,
> Michalis
> _______________________________________________
> x3d-public mailing list
> x3d-public at web3d.org
> http://web3d.org/mailman/listinfo/x3d-public_web3d.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://web3d.org/pipermail/x3d-public_web3d.org/attachments/20251122/72b33df7/attachment.html>


More information about the x3d-public mailing list