import { Camera, Entity, Ray } from "@galacean/engine";
import { Group } from "./Group";
import { GizmoComponent } from "./Type";
/** @internal */
export declare class ScaleControl extends GizmoComponent {
    private _camera;
    private _group;
    private _scaleFactor;
    private _scaleAxisComponent;
    private _scaleControlMap;
    private _selectedAxis;
    private _preMatrix;
    private _startGroupMatrix;
    private _startInvMatrix;
    private _startPoint;
    private _factorVec;
    private _currPoint;
    private _plane;
    private _tempVec0;
    private _tempVec1;
    private _tempVec2;
    private _tempMat;
    constructor(entity: Entity);
    init(camera: Camera, group: Group): void;
    onHoverStart(axisName: string): void;
    onHoverEnd(): void;
    onMoveStart(ray: Ray, axisName: string): void;
    onMove(ray: Ray): void;
    onMoveEnd(): void;
    onUpdate(isModified?: boolean): void;
    onSwitch(isModified?: boolean): void;
    onAlphaChange(axisName: string, value: number): void;
    private _initAxis;
    private _createAxis;
    private _getHitPlane;
    private _calRayIntersection;
    private _resizeControl;
}