/**
 * @module viw-webgl-component
 */
import * as VIM from 'vim-webgl-viewer/';
import { ComponentSettings } from '../settings/settings';
import { ComponentCamera } from './camera';
/**
 * Manages the isolation mechanic in the vim component.
 */
export declare class Isolation {
    private _viewer;
    private _settings;
    private _isolation;
    private _lastIsolation;
    private _camera;
    private _references;
    private _onChanged;
    /** Signal dispatched when the isolation set changes. */
    get onChanged(): import("ste-simple-events").ISimpleEvent<string>;
    constructor(viewer: VIM.Viewer, camera: ComponentCamera, settings: ComponentSettings);
    /**
     * Applies relevant settings to isolation.
     * @param settings The settings to be applied to isolation.
     */
    applySettings(settings: ComponentSettings): void;
    /**
     * Sets the reference objects for a given VIM.
     * @param vim The VIM for which reference objects are being set.
     * @param reference An array of reference objects or the string 'always' to indicate permanent reference.
     */
    setReference(vim: VIM.Vim, reference: VIM.Object3D[] | 'always'): void;
    /**
     * Retrieves the reference objects set for a given VIM.
     * @param vim The VIM for which reference objects are being retrieved.
     * @returns The reference objects set for the specified VIM.
     */
    getReference(vim: VIM.Vim): "always" | Set<VIM.Object3D>;
    /**
     * Clears all reference objects set for VIMs.
     */
    clearReferences(): void;
    /**
     * Returns true if there are currently objects isolated.
     * @returns True if there are currently objects isolated; otherwise, false.
     */
    any(): boolean;
    /**
     * Returns the current array of isolated objects.
     * @returns The array of objects currently isolated, or undefined if no objects are isolated.
     */
    current(): VIM.Object3D[];
    /**
     * Isolates the objects in the given array and shows the rest as ghost.
     * @param objects An array of objects to isolate.
     * @param source The source of isolation.
     * @returns True if isolation occurs; otherwise, false.
     */
    isolate(objects: VIM.Object3D[], source: string): boolean;
    /**
     * Toggles current isolation based on selection.
     * @param source The source of isolation.
     */
    toggleIsolation(source: string): void;
    /**
     * Removes the given objects from the isolation set.
     * @param objects An array of objects to be removed from isolation.
     * @param source The source of the removal operation.
     */
    hide(objects: VIM.Object3D[], source: string): void;
    /**
     * Adds the given objects to the isolation set.
     * @param objects An array of objects to be added to isolation.
     * @param source The source of the addition operation.
     */
    show(objects: VIM.Object3D[], source: string): void;
    /**
     * Clears the current isolation.
     * @param source The source of the isolation clearing operation.
     */
    clear(source: string): void;
    /**
     * Show all objects and quit isolation mode.
     */
    private _showAll;
    getMaterial(settings: ComponentSettings, isolate: boolean): VIM.THREE.Material;
    private _isolate;
}