/*!
 * Copyright (c) Microsoft Corporation.
 * Licensed under the MIT License.
 */
import { vec3 } from "gl-matrix";
import { Manipulator } from "./manipulator.js";
import { Core } from "../main.js";
export declare class ManipulationProcessor {
    private _previousCentroid;
    private _centroid;
    private _relativePositionToCentroid;
    private _directionToCentroid;
    private _previousDirectionToCentroid;
    private _previousCount;
    private _manipulators;
    private _removedManipulators;
    private _count;
    private _isDragging;
    private _core;
    cumulativeTranslation: vec3;
    translationDelta: vec3;
    minScale: number;
    maxScale: number;
    cumulativeScale: number;
    scaleDelta: number;
    twistAxis: vec3;
    cumulativeTwist: number;
    twistDelta: number;
    centroid: vec3;
    addManipulator: (manipulator: Manipulator) => boolean;
    removeManipulator: (manipulator: Manipulator) => void;
    prepareManipulation: () => void;
    beginManipulation: () => void;
    processManipulation: (elapsedTime: number) => void;
    endManipulation: () => void;
    get manipulators(): {
        [key: string]: Manipulator;
    };
    get count(): number;
    get isDragging(): boolean;
    constructor(core: Core);
    update(elapsedTime: number, manipulators: {
        [key: string]: Manipulator;
    }): void;
    initialize(): void;
    private _process;
}