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, Python, Tutorial
Animation Mixer	Control playing animations stored in a GLTF model.	Attribute, Schema, 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, 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, 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, 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, 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, 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, Python, Tutorial, Unity
GLTF Model Update	Allows translation of named GLTF model sub-components.	Attribute, Schema, 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, 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, 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, Python, Tutorial
Light	A light	Object, Schema, Python
Line	Draw a line	Object, Schema, Python
Look At	Dynamically rotate or face towards another entity or position (`look-at`)	Attribute, Schema, Python
Material	The material properties of the object’s surface.	Attribute, Schema, Python
Material Extras	Define extra material properties: texture encoding, render order	Attribute, Schema, Python
Model Container	Overrides absolute size for a 3D model (glTF, glb, obj, etc…).	Object, Schema, Python
Multi-Src	Define multiple visual sources applied to an object.	Attribute, Schema, 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, Python
Particles (SPE)	GPU based particle systems in A-Frame.	Attribute, Schema, 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 (Body)	Turns an entity into a PhysX rigid body (deprecates: `dynamic-body`, `static-body`).	Attribute, Schema, Python
Physics (Force Pushable)	Makes a physx-body object pushable by the user (deprecates: `impulse`).	Attribute, Schema, Python
Physics (Grabbable)	Allows user hands to grab/pickup physx-body objects.	Attribute, Schema, Python
Physics (Joint Constraint)	Adds a constraint to a physx-joint.	Attribute, Schema
Physics (Joint Driver)	Creates a driver which exerts force to return the joint to the initial position.	Attribute, Schema
Physics (Joint)	Creates a PhysX joint between an ancestor rigid body and a target rigid body.	Attribute, Schema
Physics (Material)	Controls physics properties for individual shapes or rigid bodies.	Attribute, Schema, Python
Plane	Plane Geometry (Unity Quad/Plane)	Object, Schema, Python
Position	3D object position	Attribute, Schema, Python
Program	ARENA program data	Program, 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, Python
Rounded Box	Rounded Box Geometry	Object, Schema, Python
Scale	3D object scale	Attribute, Schema, 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, 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, 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, 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, Python
Triangle	Triangle Geometry	Object, Schema, Python
TTL	The scene graph directive Time-To-Live specifying auto-delete time	Graph
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, 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