AR face manager
The face manager is a type of trackable manager.
The face manager creates GameObject
s for each face detected in the environment. The system only detects human faces.
In some implementations, face tracking requires a different camera (for example, front-facing vs rear-facing) and might be incompatible with other features, such as plane or image tracking. Consider disabling other AR managers which manage trackables. These include:
Responding to faces
Faces can be added, updated, and removed. Once per frame, if the application detects a face, the AR face manager invokes the facesChanged
event. This events contains three List
s of faces that have been added, updated, and removed since the last frame.
When a face is detected, the AR face manager instantiates the Face Prefab to represent the face. The Face Prefab can be left null
, but the face manager ensures the instantiated GameObject
has an ARFace
component on it. The ARFace
component only contains data about the detected face.
Visualizing faces
The face provider might provide a mesh that represents the face. The ARFace
component exposes vertices
, normals
, indices
, and uvs
(texture coordinates). Some or all of these can be available.
The ARFaceMeshVisualizer
component generates a UnityEngine.Mesh
and updates the MeshFilter
on the same GameObject
based on the data that the ARFace
provides.
Check the face subsystem's SubsystemDescriptor
(ARFaceManager.descriptor
) for provider-specific features.