[DRAFT] glTF interactivity and flow graph update (For snapshot)

[RaananW]

I open this PR just to update the snapshot.
No reviews needed for the time being

[bjsplat]

You have changed file(s) that made possible changes to the sandbox.
You can test the sandbox snapshot here:

https://snapshots-cvgtc2eugrd3cgfd.z01.azurefd.net/SANDBOX/refs/pull/15810/merge/

[bjsplat]

You have made possible changes to the playground.
You can test the snapshot here:

https://snapshots-cvgtc2eugrd3cgfd.z01.azurefd.net/PLAYGROUND/refs/pull/15810/merge/

The snapshot playground with the CDN snapshot (only when available):

https://snapshots-cvgtc2eugrd3cgfd.z01.azurefd.net/PLAYGROUND/refs/pull/15810/merge/?snapshot=refs/pull/15810/merge

Note that neither Babylon scenes nor textures are uploaded to the snapshot directory, so some playgrounds won't work correctly.

[hybridherbst]

Here's a couple more files that aren't working in this PR's Babylon Sandbox at the moment:

• Waypoints.glb.zip
• PlaceOnClick_.glb.zip

[RaananW]

• PlaceOnClick_.glb.zip

The reason this doesn't work is the math/mix node. According to the specs, c should be a floatN (which should be the same as a and b), but the value you provide is a float. Thus, position setting fails. One could argue that for math/mix the c value could be a float (applying to all dimensions of the floatN), but this is not the case currently.

This is specified here - https://github.com/KhronosGroup/glTF/blob/interactivity/extensions/2.0/Khronos/KHR_interactivity/Specification.adoc#361-math-nodes

Second one should be fine now.

[hybridherbst]

Happy new year!

Here's a file that currently fails, according to the console because math/rad is missing:
20250701-CircleMath (1).glb.zip

The black dot should rotate clockwise.

[RaananW]

Happy new year!

Here's a file that currently fails, according to the console because math/rad is missing: 20250701-CircleMath (1).glb.zip

The black dot should rotate clockwise.

It's weird that it is not attached, it is already implemented in the flow graph. I'll take care of that.

[RaananW]

Current change fixes that. I am waiting for the specs update to do the mapping again and be sure I have all nodes attached, but if you have any other demos/samples to test - feel free to send'em over :-)

[hybridherbst]

Will do :)
I spent some time today making a math nodes test file for float types, currently that doesn't load:
20250109-MathTests.zip