OMI glTF Working Group Meeting 2023-03-30

[madjin]

This meeting is on 3/30/2023 at 9:30 PM (UTC) / 2:30 PM (PST) in the OMI Discord within the #omi-weekly-meeting channel. During the meeting, we will be using the #omi-gltf-extensions channel to manage a speaker queue, post links, and for any sidebar discussions.

To be notified of this meeting and others, subscribe to the OMI Meetings and Events Calendar or add yourself to the @omi-gltf-subgroup role in the #roles channel of the OMI Discord.

We have a bit of a problem due to DST, since the meeting time changes differently in different parts of the world

Agenda:

• Discuss booth presentation?
• MSFT_CollisionPrimitive & MSFT_RigidBodies
• OMI Physics extensions
• OMI_seat proposal

Backlog:

• OMI_personality Stage 1 Vote (delayed until next week)
• We discussed https://openmv.org (Open Metaverse Foundation) and how we can synergize with their efforts. Should we make a showcase of our projects to open up a broader discussion?
• jin - proposals how to make our specs and work more accessible to others. showcase gltf models
• Review pull requests https://github.com/omigroup/gltf-extensions/pulls
• EXT_skin_humanoid
• OMI_link
• OMI_spawn_point
• Review MSFT_physics
  • glTF_Physics_Blender_Exporter
  • glTF_Physics_Godot_Importer
• Licensing Extension https://twitter.com/superhoge/status/1596757861882740736
• KHR_audio / Khronos feedback
  • gltf-sample-assets
• Third Room Extensions
• glXF
• Show and tell
• Create next weeks agenda

To propose another item for the agenda, comment below (preferably before the meeting).

[madjin]

Hyperfy just added vehicles, we have a good interoperability lab setup now for prototyping extensions with

Source: https://twitter.com/philburrrrt/status/1641559637995470848

Physics Materials and Vehicle Physics

• https://gameworksdocs.nvidia.com/PhysX/4.1/documentation/physxguide/Manual/Vehicles.html
• https://docs.unrealengine.com/4.26/en-US/InteractiveExperiences/Physics/ChaosPhysics/ChaosVehicles/HowToSetupChaosVehicles/
• https://pybullet.org/Bullet/BulletFull/classbtRaycastVehicle.html

Source: https://twitter.com/SubstrataVr/status/1628728604279586818

[robertlong]

Also Godot's Vehicle Physics: https://docs.godotengine.org/en/stable/classes/class_vehiclebody3d.html
And Rapier is supposed to be adding vehicles soon: https://dimforge.com/blog/2023/01/22/the-year-2022-in-dimforge#dynamic-vehicle-controller

[madjin]

• https://github.com/jamschutz/Unity-Standard-Assets/blob/master/Standard%20Assets/Utility/FollowTarget.cs
• https://github.com/search?q=repo%3AhfcRed%2FAmong-Us-Follower+target&type=code
• https://github.com/hfcRed/Among-Us-Follower
• https://github.com/search?q=repo%3AhfcRed%2FAmong-Us-Follower+target&type=code

Simple pet system in vrchat that doesn't need any special udon scripting, just follow target and look at target
Would be a fun case study for physics perhaps, the slight delay / naturalness of pet follow distance reminded me about joints / constraints