import { ControllerExtensionBase } from '../ControllerExtensionBase';
import { MOUSE, Vector3 } from 'three';
/**
 * Fly extension options for initial extension state.
 */
export declare class FlyExtensionOptions {
    /**Left mouse button binding. */
    leftMouseButton: MOUSE | undefined;
    /**Right mouse button binding. */
    rightMouseButton: MOUSE | undefined;
    /**Middle mouse button binding. */
    middleMouseButton: MOUSE | undefined;
}
/**
 * Fly controller extension for camera. Provides walk/fly movement and rotation actions.
 */
export declare class FlyControllerExtension extends ControllerExtensionBase {
    static getName: () => string;
    /**How near you can orbit vertically, upper and lower  in radians(range is 0 to Math.PI radians). */
    minPolarAngle: number;
    /**How far you can orbit vertically, upper and lower  in radians(range is 0 to Math.PI radians). */
    maxPolarAngle: number;
    /**Speed of camera movement. */
    pointerSpeed: number;
    private isLocked;
    private moveDown;
    private moveBackward;
    private moveUp;
    private moveLeft;
    private moveRight;
    private moveForward;
    private movementSpeed;
    private distanceToTarget;
    private mouseButtons;
    /**
     * @param viewerName - Owner viewer name for extension.
     * @param options - extension options.
     */
    constructor(viewerName: string, options: FlyExtensionOptions);
    /**
     * Sets mouse button bindings for controller actions.
     * @param left - Left button binding.
     * @param right - Right button binding.
     * @param middle - Middle button binding.
     */
    setMouseButtonsActions(left: MOUSE | undefined, right: MOUSE | undefined, middle: MOUSE | undefined): void;
    private onSelected;
    selected(): void;
    unselected(): void;
    deleted(): void;
    private lock;
    private unlock;
    private onMouseDown;
    private onMouseUp;
    private onMouseMove;
    private onKeyDown;
    private onKeyUp;
    private onPointerLockChange;
    private onPointerLockError;
    updated(delta: number): void;
    getTargetClone(): Vector3;
    added(): void;
    cameraModeChanged(perspective: boolean): boolean;
}