import type { ClientMessage } from '@vizor-vr/shared';
/** Orientation provider callback (matches CameraController.getOrientation) */
export interface OrientationProvider {
    getOrientation(): {
        lat: number;
        lon: number;
        fov: number;
    };
}
/**
 * Samples local camera orientation at ~5Hz and sends throttled `gaze` messages.
 * Only sends when orientation changes by more than COLLAB_GAZE_THRESHOLD degrees.
 */
export declare class GazeSender {
    private timer;
    private lastSentLat;
    private lastSentLon;
    private orientationProvider;
    private sendFn;
    constructor(orientationProvider: OrientationProvider, sendFn: (msg: ClientMessage) => void);
    /** Start sampling and sending gaze messages */
    start(): void;
    /** Stop sampling */
    stop(): void;
    /** Clean up */
    dispose(): void;
    private sample;
}
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