import { Camera, Entity, Layer, Script } from "@galacean/engine";
import { Group } from "./Group";
import { State } from "./enums/GizmoState";
/**
 * Gizmo controls, including translate, rotate, scale
 */
export declare class Gizmo extends Script {
    epsilon: number;
    private _initialized;
    private _isStarted;
    private _lastDistance;
    private _lastOrthoSize;
    private _lastIsOrtho;
    private _sceneCamera;
    private _layer;
    private _framebufferPicker;
    private _controlMap;
    private _currentControl;
    private _group;
    private _tempVec30;
    private _tempVec31;
    private _worldMat;
    private _tempRay;
    private _tempRay2;
    private _type;
    private _scalar;
    /**
     * initial scene camera & select group in gizmo
     */
    init(camera: Camera, group: Group): void;
    /**
     * gizmo layer, default Layer31
     * @return the layer for gizmo entity and gizmo's inner framebuffer picker
     * @remarks Layer duplicate warning, check whether this layer is taken
     */
    get layer(): Layer;
    set layer(layer: Layer);
    /**
     * change gizmo type
     * @return current gizmo type - translate, or rotate, scale, null, all, default null
     */
    get state(): State;
    set state(targetState: State);
    /**
     * change gizmo size
     * @return current gizmo size - min 0.01, default 1
     */
    get size(): number;
    set size(value: number);
    constructor(entity: Entity);
    onUpdate(): void;
    onLateUpdate(deltaTime: number): void;
    private _createGizmoControl;
    private _onGizmoHoverStart;
    private _onGizmoHoverEnd;
    private _triggerGizmoStart;
    private _triggerGizmoMove;
    private _triggerGizmoEnd;
    private _selectHandler;
    private _overHandler;
    private _traverseEntity;
    private _traverseControl;
    private _adjustAxisAlpha;
    private _getAlphaFactor;
}