import { OrbitCamera } from '../camera/OrbitCamera';

export interface OrbitControllerOptions {
    rotateSpeed?: number;
    zoomSpeed?: number;
    panSpeed?: number;
    enableRotate?: boolean;
    enableZoom?: boolean;
    enablePan?: boolean;
    rotateButton?: number;
    panButton?: number;
    dampingFactor?: number;
}
export declare class OrbitController {
    private camera;
    private element;
    rotateSpeed: number;
    zoomSpeed: number;
    panSpeed: number;
    enableRotate: boolean;
    enableZoom: boolean;
    enablePan: boolean;
    rotateButton: number;
    panButton: number;
    dampingFactor: number;
    private isRotating;
    private isPanning;
    private lastX;
    private lastY;
    private pointers;
    private lastPinchDistance;
    private velocityTheta;
    private velocityPhi;
    private velocityRadius;
    private onChangeCallback?;
    private boundHandlers;
    constructor(camera: OrbitCamera, element: HTMLElement, options?: OrbitControllerOptions);
    /**
     * Attach event listeners to element.
     */
    private attach;
    /**
     * Detach event listeners.
     */
    detach(): void;
    /**
     * Set callback for camera changes.
     */
    onChange(callback: () => void): void;
    private notifyChange;
    private onPointerDown;
    private onPointerMove;
    private onPointerUp;
    private onWheel;
    private getPinchDistance;
    /**
     * Update damping (call each frame for smooth deceleration).
     * Returns true if camera is still moving.
     */
    update(): boolean;
    /**
     * Stop all momentum.
     */
    stopMomentum(): void;
    /**
     * Clean up resources.
     */
    destroy(): void;
}