ARENA Examples Index

An alphabetical glossary of every example of the ARENA’s features. These examples are all configurable by sending or storing the wire-format messages for the ARENA protocol.

Support

Which Web/Python/Unity platform supports each of these features? Take a look at our version support for each type:

Examples

Thumbnail images can be clicked for a larger view. Multiple links are provided to examples of each feature.

Example	Description	Type: Links
Action (Message)	The scene graph action: create, update (merge), delete.	Graph: Tutorial
Animation	Animate and tween values.	Attribute: Schema Message Python Tutorial
Animation Mixer	Control playing animations stored in a GLTF model.	Attribute: Schema Message Python Tutorial
AR Hide/Show	Hide/Show object (`hide-on-enter-ar`) when entering AR.	Attribute: Schema
AR Marker	A location marker used to anchor scenes/objects, in the real world	Attribute: Schema Python Tutorial
ARTS	ARTS, a runtime supervisor for programs	Application
ATLAS	ATLAS, a geolocation index of AR scenes.	Application
Attribution	Attribution Component. Saves attribution data in any entity	Attribute: Schema Python Tutorial
Audio	User’s Microphone On/Off state (requires microphone permission)	User: Tutorial
Blip	When the object is created or deleted, it will animate in/out	Attribute: Schema Python
Box	Box Geometry (Unity Cube)	Object: Schema Message Python Tutorial
Box Collision	Listen for bounding-box collisions with user camera and hands (`box-collision-listener`)	Attribute: Schema Python
Buffer Geometry	Reduce geometry memory usage while being harder to manipulate (`buffer`)	Attribute: Schema
Build	Build is a JSON editor for the persisted scene graph.	Application Tutorial
Build 3D	Build3D is a visual 3D editor for the persisted scene graph (based on Inspector)	Application Tutorial
Callbacks	A handler in a program to receive an ARENA Event.	Concept Tutorial
Camera	Camera is the pose and component data representing a user avatar	Object: Schema Message Python
Capsule	Capsule Geometry	Object: Schema Python
Chat	A messaging tool for other users in the ARENA	User: Tutorial
Child	See Parent.	Concept
Circle	Circle Geometry	Object: Schema Python
Click	Object will listen for clicks (`click-listener`)	Attribute: Schema Message Python
Collision	Collisions trigger click events (`collision-listener`)	Attribute: Schema
Color	Color of the material (as hex code), supported in the `material.color` attribute.	Attribute: Schema Message Python
Cone	Cone Geometry	Object: Schema Python
Conference	Using the ARENA scene as a 3D zoom room, video conference, meeting.	Concept Tutorial
Cube	Cube Geometry (deprecated, see Box)	Object:
Cylinder	Cylinder Geometry	Object: Schema Python
Data Block	The scene graph data Attributes, storing component details.	Graph:
Display Name	The user-editable display name, derived from the Google account byu default	User: Tutorial
Dodecahedron	Dodecahedron Geometry	Object: Schema Python
Entity	Entities are containers into which components can be attached	Object: Schema Python
Event	Events are ephemeral messages used for events like controller actions	Object: Schema Message Python
Facial Recognition Avatar	Recognizes your facial feature points from your camera and animates a 3d head	User: Tutorial
File Store	The filestore interface for user file editing and uploading.	Application Tutorial
Flight/Fly	The user state to navigate on a 2D ground plane or 3D flight.	User: Tutorial
Gaussian Splat	Load 3D Gaussian Splat	Object: Schema Python
Geometry	Geometry (Mesh) is the ordered collection of vertices to make a 3D primitive.	Concept
GLTF LOD	Switch between default and detailed GLTF models	Attribute: Schema Tutorial
GLTF Model	GLTF Models afford consistent cross-platform rendering of 3D assets	Object: Schema Message Python Tutorial Unity
GLTF Model Update	Allows translation of named GLTF model sub-components.	Attribute: Schema Message Python
GLTF Morph	Target and control a GLTF model morphTargets created in Blender	Attribute: Schema Python
Go to Landmark	Teleports user to the landmark with the given name	Attribute: Schema Python
Go to URL	Goto given URL	Attribute: Schema Message Python
Hand Left	Hand Left is the metadata pose and controller type of the user avatar	Object: Schema Python
Hand Right	Hand Right is the metadata pose and controller type of the user avatar	Object: Schema Python
Health Check	A clickable warning/error icon when critical errors happen in a scene	User: Tutorial
Icosahedron	Icosahedron Geometry	Object: Schema Python
Image	Display an image on a plane	Object: Schema Message Python
Impulse	The force applied using physics.	Attribute: Schema Message Python
Inspector	The A-Frame Inspector, a visual 3D scene graph debugger	Application Tutorial
Jitsi Video	Apply Jitsi video source to the geometry	Attribute: Schema Python
Landmark	Landmarks allow you to jump to certain places of interest in a scene	Attribute: Schema Message Python Tutorial
Light	A light	Object: Schema Message Python
Line	Draw a line	Object: Schema Message Python
Look At	Dynamically rotate or face towards another entity or position (`look-at`)	Attribute: Schema Message Python
Material	The material properties of the object’s surface.	Attribute: Schema Message Python
Material Extras	Define extra material properties: texture encoding, render order	Attribute: Schema Python
Multi-Src	Define multiple visual sources applied to an object.	Attribute: Schema Message Python
Namespace	Your ARENA account namespace (same as User Name)	Concept Tutorial
Nav Mesh	Invisible 3D model surface for users to move upon.	Scene: Tutorial
Navigation Controller	Using the VR Helmet Controller to hop around a scene.	User: Tutorial
Navigation Keys	Using the VR Desktop keyboard keys to move around a scene.	User: Tutorial
Network Graph	A web interface of MQTT message traffic	Application Tutorial
Null	Any JSON attribute may be removed by setting it equal to `null`	Graph: Python Tutorial
OBJ Model	OBJ Models use Wavefront (.OBJ) files	Object: Schema Python
Object ID	The scene graph name ID for the entity, must be unique in the scene.	Graph:
Ocean	Ocean	Object: Schema Python
Octahedron	Octahedron Geometry	Object: Schema Python
Origin Marker	Origin Tag	Concept Tutorial
Overwrite	The scene graph directive to erase and overwrite this entity’s data, not merge	Graph:
Parent	Parent’s object_id. Child objects inherit scale and translation (`parent`)	Attribute: Schema Message Python
Particles (SPE)	GPU based particle systems in A-Frame.	Attribute: Schema Message Python Tutorial
PCD Model	Load a Point-Cloud data (PCD) model	Object: Schema Python
Persist	The scene graph directive to store the entity in the persistence database.	Graph: Tutorial
Physics (Dynamic)	Physics type attached to the object (`dynamic-body`).	Attribute: Schema Message Python
Physics (Static)	Physics type attached to the object (`static-body`).	Attribute: Schema Message Python
Plane	Plane Geometry (Unity Quad/Plane)	Object: Schema Python
Position	3D object position	Attribute: Schema Message Python
Program	ARENA program data	Program: Message Tutorial
Remote Render	Whether or not an object should be remote rendered [Experimental]	Attribute: Schema Tutorial
Ring	Ring Geometry	Object: Schema Python
Rotation	3D object rotation in quaternions; Right-handed coordinates	Attribute: Schema Message Python
Rounded Box	Rounded Box Geometry	Object: Schema Python
Scale	3D object scale	Attribute: Schema Message Python
Scene	The main 3D rendered scene web interface	Application Tutorial
Scenes List	A list of scenes to browse and scene entry URL options.	Application Tutorial
Screenshareable	Whether or not a user can screen share on an object (`screenshareable`)	Attribute: Schema Tutorial
Segment	Segments are the rows of triangles used to render a Mesh Geometry Primitive	Concept
Shadow	Defines how objects cast and receive shadow	Attribute: Schema Python
Sign In	Signin, login	User: Tutorial
Sign Out	Signout, logout	User: Tutorial
Skip Cache	Disable retrieving the shared geometry object from the cache (`skipCache`)	Attribute: Schema
Sound	Positional sound is thus affected by the component’s position	Attribute: Schema Message Python
Speed	The user setting defining how fast to move when using Navigation Keys	User: Tutorial
Sphere	Sphere Geometry	Object: Schema Python
Spot AR	SpotAR is a mode for viewing AR-tagged content in restricted browsers (Safari)	Application Tutorial
Start/Spawn Position	The scene options to control the variance of position to enter the scene	Scene: Tutorial
Tetrahedron	Tetrahedron Geometry	Object: Schema Python
Text	Display text	Object: Schema Message Python
Text Input	Opens an HTML prompt when clicked. Sends text xas an event on MQTT	Attribute: Schema Python
Thickline	Draw a thick line that can have a custom width	Object: Schema Message Python
Three.js Scene	Load a Three.js Scene	Object: Schema Python
Torus	Torus Geometry	Object: Schema Python
Torus Knot	Torus Knot Geometry	Object: Schema Message Python
Triangle	Triangle Geometry	Object: Schema Python
TTL	The scene graph directive Time-To-Live specifying auto-delete time	Graph: Message
UI Button Panel	ARENAUI Button Panel	Object: Schema Python Tutorial
UI Card	ARENAUI Card	Object: Schema Python Tutorial
UI Prompt	ARENAUI Prompt	Object: Schema Python Tutorial
URDF Model	URDF Models are used to express robotic shapes and joint parameters	Object: Schema Python
User Account	The User’s account profile and scene permissions.	Application Tutorial
User List	A scene tool to list connect users and their Jitsi (video conference) state	User: Tutorial
User Name	Your ARENA account username (same as Namespace)	Concept Tutorial
Video	User’s Camera On/Off state (requires camera permission)	User: Tutorial
Video Control	Video Control	Attribute: Schema Python
Video Quality	An indicator above a user when Jitsi video quality is poor	User: Tutorial
Videosphere	Video sphere 360 video bubble	Object: Schema Message Python Tutorial
Visible	To enable/disable rendering	Attribute: Schema
VR Hide/Show	Hide/Show object (`hide-on-enter-vr`) when entering VR.	Attribute: Schema
WebXR	WebXR is an API for building web-accessible XR scenes.	Application Tutorial