# oculus-samples/unity-discover architecture > Architecture diagram of the GitHub repository oculus-samples/unity-discover, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-13). It is an AI-made overview: check details against the source. - Interactive diagram: https://gitdiagram.com/oculus-samples/unity-discover - Repository: https://github.com/oculus-samples/unity-discover ## Overview This tree centers on three Unity utility packages: avatar setup and mesh inspection, XR controller/tracking input, and reusable Unity helpers. The main workflow represented is XR actions and tracking entering the input manager, then feeding hand data or avatar tracking; avatar meshes are cached and queried after loading. The README also names Scene API, Interaction SDK, Passthrough, spatial anchors, and multiplayer, but their application-level implementations are not present in this supplied tree. Relationships below are limited to source-index references or shown calls. Main entry points: [`Packages/com.meta.utilities.input/XRInputManager.cs`](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRInputManager.cs) (XR input manager), [`Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshQuery.cs`](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshQuery.cs) (Mesh queries), [`Packages/com.meta.utilities/AutoSet.cs`](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/AutoSet.cs) (AutoSet attribute), [`Packages/com.meta.utilities.input/XRInputProvider.cs`](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRInputProvider.cs) (Input provider) ## Diagram (Mermaid) ```mermaid flowchart TD subgraph group_avatars["Avatar utilities"] node_avatar_entity["Avatar entity
[AvatarEntity.cs]"] node_mesh_cache[("Mesh cache
[AvatarMeshCache.cs]")] node_mesh_query["Mesh queries
[AvatarMeshQuery.cs]"] node_arm_info["Arm mesh info"] end subgraph group_input["XR input"] node_xr_manager["XR input manager
[XRInputManager.cs]"] node_control_actions["Controller actions"] node_control_delegate["Control delegate"] node_tracking_delegate["Tracking delegate"] node_input_provider["Input provider
[XRInputProvider.cs]"] node_hand_source["XR hand source"] node_hmd_source["XR HMD source"] node_animated_hand["Animated hand
[XRAnimatedHand.cs]"] node_hand_helpers["Hand interaction helpers
[Interaction]"] node_input_support["Input support tools"] end subgraph group_utilities["Unity utilities"] node_auto_set["AutoSet attribute
[AutoSet.cs]"] node_auto_set_processor["AutoSet processor"] node_singleton["Singleton base
[Singleton.cs]"] node_animation_triggers["Animation triggers"] node_animation_listener["Trigger listener"] node_enum_dictionary["Enum dictionary
[EnumDictionary.cs]"] node_network_settings["Network settings
[NetworkSettings.cs]"] node_network_toolbar["Network toolbar"] node_general_helpers["General helpers
[com.meta.utilities]"] end node_avatar_entity -->|"uses attribute"| node_auto_set node_avatar_entity -.->|"provides avatar data"| node_mesh_query node_mesh_query -->|"reads mesh data"| node_mesh_cache node_mesh_query -->|"checks avatar state"| node_avatar_entity node_arm_info -->|"uses queries"| node_mesh_query node_mesh_cache -->|"inherits from"| node_singleton node_mesh_cache -->|"uses attribute"| node_auto_set node_xr_manager -->|"enables actions"| node_control_actions node_xr_manager -->|"creates delegate"| node_control_delegate node_xr_manager -->|"creates delegate"| node_tracking_delegate node_control_delegate -->|"reads actions"| node_control_actions node_input_provider -->|"references manager"| node_xr_manager node_input_provider -->|"inherits from"| node_singleton node_input_provider -->|"uses attribute"| node_auto_set node_hand_source -->|"reads hand actions"| node_xr_manager node_animated_hand -->|"reads tracking input"| node_xr_manager node_animated_hand -->|"reads actions"| node_control_actions node_auto_set_processor -->|"resolves fields"| node_auto_set node_animation_triggers -->|"uses listener"| node_animation_listener node_network_toolbar -->|"reads and sets"| node_network_settings click node_avatar_entity "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.avatars/Avatar/AvatarEntity.cs" click node_mesh_cache "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshCache.cs" click node_mesh_query "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshQuery.cs" click node_arm_info "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshArmInfo.cs" click node_xr_manager "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRInputManager.cs" click node_control_actions "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRInputControlActions.cs" click node_control_delegate "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRInputControlDelegate.cs" click node_tracking_delegate "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRInputTrackingDelegate.cs" click node_input_provider "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRInputProvider.cs" click node_hand_source "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/Interaction/FromXRHandDataSource.cs" click node_hmd_source "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/Interaction/FromXRHmdDataSource.cs" click node_animated_hand "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRAnimatedHand.cs" click node_hand_helpers "https://github.com/oculus-samples/unity-discover/tree/main/Packages/com.meta.utilities.input/Interaction" click node_input_support "https://github.com/oculus-samples/unity-discover/tree/main/Packages/com.meta.utilities.input" click node_auto_set "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/AutoSet.cs" click node_auto_set_processor "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/Editor/AutoSetPostprocessor.cs" click node_singleton "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/Singleton.cs" click node_animation_triggers "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/AnimationStateTriggers.cs" click node_animation_listener "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/AnimationStateTriggerListener.cs" click node_enum_dictionary "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/EnumDictionary.cs" click node_network_settings "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/NetworkSettings.cs" click node_network_toolbar "https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/Editor/NetworkSettingsToolbar.cs" click node_general_helpers "https://github.com/oculus-samples/unity-discover/tree/main/Packages/com.meta.utilities" classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554 classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337 classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81 classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a class node_avatar_entity,node_mesh_cache,node_mesh_query,node_arm_info toneBlue class node_xr_manager,node_control_actions,node_control_delegate,node_tracking_delegate,node_input_provider,node_hand_source,node_hmd_source,node_animated_hand,node_hand_helpers,node_input_support toneAmber class node_auto_set,node_auto_set_processor,node_singleton,node_animation_triggers,node_animation_listener,node_enum_dictionary,node_network_settings,node_network_toolbar,node_general_helpers toneMint ``` ## Components ### Avatar utilities - [Avatar entity](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.avatars/Avatar/AvatarEntity.cs): `Packages/com.meta.utilities.avatars/Avatar/AvatarEntity.cs` - [Mesh cache](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshCache.cs): `Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshCache.cs` - [Mesh queries](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshQuery.cs): `Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshQuery.cs` - [Arm mesh info](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshArmInfo.cs): `Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshArmInfo.cs` ### XR input - [XR input manager](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRInputManager.cs): `Packages/com.meta.utilities.input/XRInputManager.cs` - [Controller actions](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRInputControlActions.cs): `Packages/com.meta.utilities.input/XRInputControlActions.cs` - [Control delegate](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRInputControlDelegate.cs): `Packages/com.meta.utilities.input/XRInputControlDelegate.cs` - [Tracking delegate](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRInputTrackingDelegate.cs): `Packages/com.meta.utilities.input/XRInputTrackingDelegate.cs` - [Input provider](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRInputProvider.cs): `Packages/com.meta.utilities.input/XRInputProvider.cs` - [XR hand source](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/Interaction/FromXRHandDataSource.cs): `Packages/com.meta.utilities.input/Interaction/FromXRHandDataSource.cs` - [XR HMD source](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/Interaction/FromXRHmdDataSource.cs): `Packages/com.meta.utilities.input/Interaction/FromXRHmdDataSource.cs` - [Animated hand](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities.input/XRAnimatedHand.cs): `Packages/com.meta.utilities.input/XRAnimatedHand.cs` - [Hand interaction helpers](https://github.com/oculus-samples/unity-discover/tree/main/Packages/com.meta.utilities.input/Interaction): `Packages/com.meta.utilities.input/Interaction` - [Input support tools](https://github.com/oculus-samples/unity-discover/tree/main/Packages/com.meta.utilities.input): `Packages/com.meta.utilities.input` ### Unity utilities - [AutoSet attribute](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/AutoSet.cs): `Packages/com.meta.utilities/AutoSet.cs` - [AutoSet processor](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/Editor/AutoSetPostprocessor.cs): `Packages/com.meta.utilities/Editor/AutoSetPostprocessor.cs` - [Singleton base](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/Singleton.cs): `Packages/com.meta.utilities/Singleton.cs` - [Animation triggers](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/AnimationStateTriggers.cs): `Packages/com.meta.utilities/AnimationStateTriggers.cs` - [Trigger listener](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/AnimationStateTriggerListener.cs): `Packages/com.meta.utilities/AnimationStateTriggerListener.cs` - [Enum dictionary](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/EnumDictionary.cs): `Packages/com.meta.utilities/EnumDictionary.cs` - [Network settings](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/NetworkSettings.cs): `Packages/com.meta.utilities/NetworkSettings.cs` - [Network toolbar](https://github.com/oculus-samples/unity-discover/blob/main/Packages/com.meta.utilities/Editor/NetworkSettingsToolbar.cs): `Packages/com.meta.utilities/Editor/NetworkSettingsToolbar.cs` - [General helpers](https://github.com/oculus-samples/unity-discover/tree/main/Packages/com.meta.utilities): `Packages/com.meta.utilities` ## Connections - Avatar entity → AutoSet attribute: uses attribute (evidence: `Packages/com.meta.utilities.avatars/Avatar/AvatarEntity.cs`) - Avatar entity → Mesh queries: provides avatar data (evidence: `Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshQuery.cs`) - Mesh queries → Mesh cache: reads mesh data (evidence: `Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshQuery.cs`) - Mesh queries → Avatar entity: checks avatar state (evidence: `Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshQuery.cs`) - Arm mesh info → Mesh queries: uses queries (evidence: `Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshArmInfo.cs`) - Mesh cache → Singleton base: inherits from (evidence: `Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshCache.cs`) - Mesh cache → AutoSet attribute: uses attribute (evidence: `Packages/com.meta.utilities.avatars/Avatar/AvatarMeshUtils/AvatarMeshCache.cs`) - XR input manager → Controller actions: enables actions (evidence: `Packages/com.meta.utilities.input/XRInputManager.cs`) - XR input manager → Control delegate: creates delegate (evidence: `Packages/com.meta.utilities.input/XRInputManager.cs`) - XR input manager → Tracking delegate: creates delegate (evidence: `Packages/com.meta.utilities.input/XRInputManager.cs`) - Control delegate → Controller actions: reads actions (evidence: `Packages/com.meta.utilities.input/XRInputControlDelegate.cs`) - Input provider → XR input manager: references manager (evidence: `Packages/com.meta.utilities.input/XRInputProvider.cs`) - Input provider → Singleton base: inherits from (evidence: `Packages/com.meta.utilities.input/XRInputProvider.cs`) - Input provider → AutoSet attribute: uses attribute (evidence: `Packages/com.meta.utilities.input/XRInputProvider.cs`) - XR hand source → XR input manager: reads hand actions (evidence: `Packages/com.meta.utilities.input/Interaction/FromXRHandDataSource.cs`) - Animated hand → XR input manager: reads tracking input (evidence: `Packages/com.meta.utilities.input/XRAnimatedHand.cs`) - Animated hand → Controller actions: reads actions (evidence: `Packages/com.meta.utilities.input/XRAnimatedHand.cs`) - AutoSet processor → AutoSet attribute: resolves fields (evidence: `Packages/com.meta.utilities/Editor/AutoSetPostprocessor.cs`) - Animation triggers → Trigger listener: uses listener (evidence: `Packages/com.meta.utilities/AnimationStateTriggers.cs`) - Network toolbar → Network settings: reads and sets (evidence: `Packages/com.meta.utilities/Editor/NetworkSettingsToolbar.cs`)