import type { Scene, PerspectiveCamera } from 'three';
import type { AnnotationData } from '@vizor-vr/shared';
/**
 * Orchestrates annotation rendering and interaction.
 * Creates 3D sprite markers at lat/lon positions, manages time-based visibility,
 * and handles click-to-open HTML popups via raycasting.
 */
export declare class AnnotationManager {
    private scene;
    private camera;
    private domElement;
    private sprites;
    private popup;
    private raycaster;
    private pointer;
    private frustum;
    private projScreenMatrix;
    private boundOnClick;
    constructor(scene: Scene, camera: PerspectiveCamera, domElement: HTMLElement, shadowRoot: ShadowRoot);
    /** Set annotations from <vz-annotation> child elements */
    setAnnotations(annotations: AnnotationData[]): void;
    /** Called each frame with current video time. Toggle sprite visibility based on time windows + frustum culling. */
    update(currentTime: number): void;
    /** Handle click: raycast against visible sprites, open popup if hit */
    private onClick;
    /** Remove all annotation sprites from scene and dispose resources */
    clear(): void;
    /** Full cleanup: clear sprites, remove event listeners, dispose popup */
    dispose(): void;
}
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