import { Point } from "../util/misc";
import { SubscriptionOptions } from "../util/observable";
/**
 * @description The payload for the pan event.
 *
 * @category Camera
 */
export type CameraPanEventPayload = {
    diff: Point;
};
/**
 * @description The payload for the zoom event.
 *
 * @category Camera
 */
export type CameraZoomEventPayload = {
    deltaZoomAmount: number;
};
/**
 * @description The payload for the rotate event.
 *
 * @category Camera
 */
export type CameraRotateEventPayload = {
    deltaRotation: number;
};
/**
 * @description The mapping of the camera events.
 * This is primarily used for type inference.
 *
 * @category Camera
 */
export type CameraEventMap = {
    "pan": CameraPanEventPayload;
    "zoom": CameraZoomEventPayload;
    "rotate": CameraRotateEventPayload;
    "all": AllCameraEventPayload;
};
/**
 * @description The type of the camera rotate event.
 * The type is for discriminating the event type when the all event is triggered.
 *
 * @category Camera
 */
export type CameraRotateEvent = {
    type: "rotate";
} & CameraRotateEventPayload;
/**
 * @description The type of the camera pan event.
 * The type is for discriminating the event type when the all event is triggered.
 *
 * @category Camera
 */
export type CameraPanEvent = {
    type: "pan";
} & CameraPanEventPayload;
/**
 * @description The type of the camera zoom event.
 * The type is for discriminating the event type when the all event is triggered.
 *
 * @category Camera
 */
export type CameraZoomEvent = {
    type: "zoom";
} & CameraZoomEventPayload;
/**
 * @description The type of the camera state.
 *
 * @category Camera
 */
export type CameraState = {
    position: Point;
    zoomLevel: number;
    rotation: number;
};
/**
 * @description The payload type of the "all" camera event payload.
 *
 * @category Camera
 */
export type AllCameraEventPayload = CameraRotateEvent | CameraPanEvent | CameraZoomEvent;
/**
 * @description The callback function type for the camera event.
 *
 * @category Camera
 */
export type Callback<K extends keyof CameraEventMap> = (event: CameraEventMap[K], cameraState: CameraState) => void;
/**
 * @description The callback function type for the "all" camera event.
 *
 * @category Camera
 */
export type ConslidateCallback = (payload: AllCameraEventPayload, cameraState: CameraState) => void;
/**
 * @description The type of the unsubscribe function.
 *
 * @category Camera
 */
export type UnSubscribe = () => void;
/**
 * @description The observer type for the pan event.
 *
 * @category Camera
 */
export type PanObserver = Callback<"pan">;
/**
 * @description The observer type for the zoom event.
 *
 * @category Camera
 */
export type ZoomObserver = Callback<"zoom">;
/**
 * @description The observer type for the rotate event.
 *
 * @category Camera
 */
export type RotateObserver = Callback<"rotate">;
/**
 * @description The observer type for the "all" camera event.
 *
 * @category Camera
 */
export type AllObserver = Callback<"all">;
/**
 * @description The camera update publisher.
 *
 * @category Camera
 */
export declare class CameraUpdatePublisher {
    private pan;
    private zoom;
    private rotate;
    private all;
    constructor();
    /**
     * @description Notify the pan event.
     * Will also notify the "all" event.
     *
     * @category Camera
     */
    notifyPan(event: CameraEventMap["pan"], cameraState: CameraState): void;
    /**
     * @description Notify the zoom event.
     * Will also notify the "all" event.
     *
     * @category Camera
     */
    notifyZoom(event: CameraEventMap["zoom"], cameraState: CameraState): void;
    /**
     * @description Notify the rotate event.
     * Will also notify the "all" event.
     *
     * @category Camera
     */
    notifyRotate(event: CameraEventMap["rotate"], cameraState: CameraState): void;
    /**
     * @description Subscribe to the camera event.
     * You can also pass in the abort controller signal within the options to cancel the subscription. Like this:
     * ```ts
     * const controller = new AbortController();
     * const unSubscribe = on("pan", (event, cameraState)=>{}, {signal: controller.signal});
     *
     * // later in other place where you want to unsubscribe
     * controller.abort();
     *
     * ```
     * This means you can cancel multiple subscriptions by aborting the same controller. Just like regular event listeners.
     *
     * @category Camera
     */
    on<K extends keyof CameraEventMap>(eventName: K, callback: (event: CameraEventMap[K], cameraState: CameraState) => void, options?: SubscriptionOptions): UnSubscribe;
}