[x3d-public] gltf inspired binary storage

[Andreas Plesch]

Let me just note that x3dom currently does not support morph targets or
sparse accessors in glTF. Does castle engine translate morph targets to
CoordinateInterpolators ?

Regards, Andreas

On Thu, Jan 20, 2022 at 6:47 AM Michalis Kamburelis <
michalis.kambi at gmail.com> wrote:

> Hi Joe,
>
> > Can we also compare this with Hanim Displacer operation (target
> displacements of mesh and weights driven by 0 to 1 scale input) ?
>
> From what I understand,
>
> - H-Anim Displacer means that you animate a (subset) of coordinates of the
> mesh.
> - Which is equivalent in Blender to using a "hook" attached to a
> vertex group. Useful e.g. to animate a jaw, or eye area, to make
> facial expressions -- when you want to morph a mesh, but usually only
> a small subset of the mesh changes by a particular animation.
> - From what I understand this is equivalent to glTF morph target
> animation with "Sparse Accessors",
>
> https://www.khronos.org/registry/glTF/specs/2.0/glTF-2.0.html#sparse-accessors
> .
>
> >
> > Can the glTF change number of points in a shape during the course of an
> animation?
>
> No. Morph targets just change the coordinates' positions. Number of
> points, as well as their topology (how they connect to polygons)
> always stays the same.
>
> Regards,
> Michalis
>


-- 
Andreas Plesch
Waltham, MA 02453
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