[x3d-public] Transform processing

[Don Brutzman]

Looks functionally and mathematically equivalent to me.

A more detailed definition is probably available in the WebGL
Specification.

Browser builders can say whether they use transformation matrixes on the
inside of their source, too.

all the best, Don
-- 
X3D Graphics, Maritime Robotics, Distributed Simulation
Relative Motion Consulting  https://RelativeMotion.info


On Wed, Jan 7, 2026 at 19:20 Joe D Williams via x3d-public <
x3d-public at web3d.org> wrote:

> can I get a comment about comparing these two text descriptions?
> Thanks,
> Joe
> -----Original Message-----
> From: Extensible 3D (X3D) Graphics public discussion <x3d-public at web3d.org
> >
> Sent: Dec 21, 2025 10:11 AM
> To: <x3d-ecosystem-request at web3d.org>, <x3d-public at web3d.org>
> Cc: Joe D Williams <joedwil at earthlink.net>
> Subject: [x3d-public] Transform processing
>
> glTF
> https://registry.khronos.org/glTF/specs/2.0/glTF-2.0.html#transformations
>
> X3D
>
> https://www.web3d.org/documents/specifications/19775-1/V4.0/Part01/components/grouping.html#Transform
>
>
> Attached is cut from glTF standard and X3D standard.
> I need to make sure these produce same result, except glTF has no center
> parameter.
> Thanks and Best,
> Joe
>
>
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