Other types

Pose

public struct Pose: Sendable {
    var points: [Joint: CGPoint]
    var timestamp: TimeInterval
    var imageSize: CGSize?
    var confidence: [Joint: Double]

    init(points:timestamp:imageSize: = nil, confidence: = [:])
    subscript(joint: Joint) -> CGPoint?
    func confidence(of joints: [Joint]) -> Double?
}

See The Pose contract.

Joint

public enum Joint: String, CaseIterable, Sendable

nose, leftEye, rightEye, leftEar, rightEar, neck, leftShoulder, rightShoulder, leftElbow, rightElbow, leftWrist, rightWrist, root, leftHip, rightHip, leftKnee, rightKnee, leftAnkle, rightAnkle.

Shortcuts: Joint.ear(_:), .shoulder(_:), .elbow(_:), .wrist(_:), .hip(_:), .knee(_:), .ankle(_:).

BodySide

public enum BodySide: String, CaseIterable, Sendable, Codable {
    case left, right
    var opposite: BodySide
}

Always the patient’s anatomical side.

MotionEvent

public enum MotionEvent: Sendable, Equatable {
    case repCompleted(Rep)
    case repRejected(Rep)
    case holdStarted
    case formFault(FormFeedback)
    case visibilityChanged(Visibility)
    case baselineCompleted(Double)
    case setupChanged(Set<SetupIssue>)
}

See Events and snapshot.

Visibility

public struct Visibility: Sendable, Equatable {
    let isVisible: Bool
    let missingJoints: [Joint]   // empty when visible
}

SetupIssue

public enum SetupIssue: String, Sendable, CaseIterable, Codable {
    case turnSideways, faceCamera, moveCloser, stepBack
}

SetupCheck

public struct SetupCheck: Sendable {
    var maxSideRatio = 0.45
    var minFrontRatio = 0.35
    var minSpan = 0.15
    var edgeMargin = 0.03

    init()
    func issues(in pose: Pose, exercise: ExerciseDefinition, side: BodySide) -> Set<SetupIssue>
}

See Measurement quality.