export declare const SPATIAL_CURSOR_CHANNEL = "otoji-spatial";
export interface SpatialPoint {
    x: number;
    y: number;
    z: number;
}
export interface SpatialCursorSpace {
    kind: "calibrated-hand-space";
    finger: SpatialPoint;
    direction: SpatialPoint;
    joints3d: {
        indexMcp: SpatialPoint;
        indexTip: SpatialPoint;
    };
    landmarks: Array<{
        x: number;
        y: number;
        z?: number;
    }>;
    depthNormalized: number;
    capture: {
        inferenceMirrored: boolean;
    };
}
export type SpatialCursorEnvelope = {
    version: 1;
    type: "cursor";
    ts: number;
    sourceId: string;
    state: "tracking";
    space: SpatialCursorSpace;
    confidence: {
        overall: number;
        hand: number;
        depth: number;
        temporal: number;
    };
} | {
    version: 1;
    type: "cursor";
    ts: number;
    sourceId: string;
    state: "lost";
    space: null;
    confidence: {
        overall: number;
        hand: number;
        depth: number;
        temporal: number;
    };
    reason?: string;
};
export type SpatialCursorIntent = {
    kind: "engage";
    x: number;
    y: number;
    depth: number;
} | {
    kind: "move";
    x: number;
    y: number;
    depth: number;
} | {
    kind: "pinch-start";
    x: number;
    y: number;
    depth: number;
} | {
    kind: "pinch-end";
    x: number;
    y: number;
    depth: number;
    durationMs: number;
} | {
    kind: "rest";
    reason: string;
};
export interface SpatialCursorState {
    phase: "rest" | "engaging" | "engaged";
    stableSince: number;
    lastTs: number;
    anchorHand?: SpatialPoint;
    anchorCursor: {
        x: number;
        y: number;
        depth: number;
    };
    cursor: {
        x: number;
        y: number;
        depth: number;
    };
    filteredHand?: SpatialPoint;
    pinch: "unarmed" | "armed" | "closed";
    openFrames: number;
    closedFrames: number;
    pinchStartedAt?: number;
    pinchCandidate?: {
        x: number;
        y: number;
        depth: number;
    };
    sourceId?: string;
    maxHandScale: number;
}
export interface SpatialCursorOptions {
    engageMs: number;
    confidence: number;
    xyGain: number;
    depthGain: number;
    smoothingMs: number;
}
export declare function createSpatialCursorState(): SpatialCursorState;
export declare function isSpatialCursorEnvelope(value: unknown): value is SpatialCursorEnvelope;
export declare function reduceSpatialCursor(state: SpatialCursorState, frame: SpatialCursorEnvelope, overrides?: Partial<SpatialCursorOptions>): {
    state: SpatialCursorState;
    intents: SpatialCursorIntent[];
};
export declare function createSpatialCursorChannel(onFrame: (frame: SpatialCursorEnvelope) => void): BroadcastChannel | undefined;
//# sourceMappingURL=spatialCursor.d.ts.map