import { RenderManagerBase } from '../RenderManagerBase';
import { LabelMapBase } from './LabelMapBase';
import { DomLabelMap, DomLabelMapOptions } from './DomLabelMap';
import { Plane } from 'three';
/**
 * Horizontal and vertical alignment for label.
 */
export declare enum LabelAlignment {
    /**
     * Start alignment(left for horizontal and top for vertical).
     */
    Start = "start",
    /**
     * Middle alignment(center for horizontal and vertical).
     */
    Middle = "middle",
    /**
     * End alignment(right for horizontal and bottom for vertical).
     */
    End = "end"
}
/**
 * Tools for creating and displaying labels in 3d space.
 * Labels can display different content.
 */
export declare class LabelTools {
    private readonly renderManager;
    private needToCheckClipping;
    /**
     * Label maps storage.
     * Each map contains a set of labels that are subject to one method of rendering and updating content.
     */
    labelMaps: Map<string, LabelMapBase>;
    /**
     * @param renderManager - RenderManager instance.
     * @param viewerElement - viewer HTML element.
     */
    constructor(renderManager: RenderManagerBase, viewerElement: HTMLElement);
    /**
     * Adding a new label map.
     * @param options - Labels map options for creation.
     */
    addDomLabelMap(options: DomLabelMapOptions): DomLabelMap | undefined;
    /**
     * Delete existing label map.
     * @param name - Label map name.
     */
    removeLabelMap(name: string): void;
    /**
     * Init labels system.
     */
    init(): void;
    /**
     * Update labels on viewer space.
     */
    update(forceShapecast?: boolean): void;
    /**
     * Clear label maps.
     */
    clear(): void;
    /**
     * Destroy and clear labels system assets.
     */
    dispose(): void;
    checkWithClippingPlanes(planes: Plane[]): void;
    private onClippingUpdate;
}