export declare const DEFAULT_CAMERA_FOLLOW_TIME = 1000;
export declare const DEFAULT_CAMERA_FOLLOW_EASE = "easeInOutSine";
export declare const CAMERA_FOLLOW_EASES: readonly ["linear", "easeInQuad", "easeOutQuad", "easeInOutQuad", "easeInCubic", "easeOutCubic", "easeInOutCubic", "easeInQuart", "easeOutQuart", "easeInOutQuart", "easeInQuint", "easeOutQuint", "easeInOutQuint", "easeInSine", "easeOutSine", "easeInOutSine", "easeInExpo", "easeOutExpo", "easeInOutExpo", "easeInCirc", "easeOutCirc", "easeInOutCirc", "easeInElastic", "easeOutElastic", "easeInOutElastic", "easeInBack", "easeOutBack", "easeInOutBack", "easeInBounce", "easeOutBounce", "easeInOutBounce"];
export type CameraFollowEase = typeof CAMERA_FOLLOW_EASES[number];
export type CameraFollowSmoothMoveOptions = {
    /** Enable or disable the smooth transition when options are sent as an object. */
    enabled?: boolean;
    /** Duration of the transition to the new camera target, in milliseconds. */
    time?: number;
    /** pixi-viewport easing name, for example "easeInOutQuad". */
    ease?: CameraFollowEase;
    /** Continuous follow speed after the transition. 0 keeps the target centered instantly. */
    speed?: number;
    /** Continuous follow acceleration after the transition. */
    acceleration?: number | null;
    /** Center radius where the followed target can move without moving the viewport. */
    radius?: number | null;
};
export type CameraFollowSmoothMove = boolean | CameraFollowSmoothMoveOptions;
export type CameraFollowTarget = {
    x: number;
    y: number;
    destroyed?: boolean;
} | null | undefined;
export type CameraFollowPosition = {
    x: number;
    y: number;
};
export interface CameraFollowApplyContext {
    viewport: any;
    target: CameraFollowTarget;
    smoothMove: CameraFollowSmoothMove;
    followRevision: number;
    isCurrentRevision: (revision: number) => boolean;
    shouldFollowCamera: () => boolean;
    /** Snap the viewport translation to whole pixels when rendering. Defaults to true. */
    pixelSnap?: boolean;
}
export type CameraFollowOwnership = {
    readonly viewport: object;
    readonly token: symbol;
};
export declare const ownsCameraFollow: (ownership: CameraFollowOwnership | null) => boolean;
/**
 * Rounds the viewport translation to whole pixels at render time only.
 *
 * Tilemap shaders ignore Pixi's `roundPixels`, so a fractional camera (interpolated follow
 * target, odd screen size) makes tiles land on a different sub-pixel every frame and shimmer.
 * `viewport.x` / `viewport.y` stay fractional, so follow, clamp and animations are not affected.
 */
export declare const setViewportPixelSnap: (component: any, enabled: boolean) => void;
export declare const smoothMoveEnabled: (smoothMove: CameraFollowSmoothMove) => boolean;
export declare const cameraFollowAnimationOptions: (smoothMove: CameraFollowSmoothMove) => {
    time: number;
    ease: "easeInOutSine" | "linear" | "easeInQuad" | "easeOutQuad" | "easeInOutQuad" | "easeInCubic" | "easeOutCubic" | "easeInOutCubic" | "easeInQuart" | "easeOutQuart" | "easeInOutQuart" | "easeInQuint" | "easeOutQuint" | "easeInOutQuint" | "easeInSine" | "easeOutSine" | "easeInExpo" | "easeOutExpo" | "easeInOutExpo" | "easeInCirc" | "easeOutCirc" | "easeInOutCirc" | "easeInElastic" | "easeOutElastic" | "easeInOutElastic" | "easeInBack" | "easeOutBack" | "easeInOutBack" | "easeInBounce" | "easeOutBounce" | "easeInOutBounce";
} | null;
export declare const cameraFollowOptions: (smoothMove: CameraFollowSmoothMove) => {
    speed?: number;
    acceleration?: number | null;
    radius?: number | null;
} | undefined;
export declare const clearCameraFollowPlugins: (viewport: any, ownership?: CameraFollowOwnership | null) => boolean;
export declare const ownsCameraFollowRevision: (appliedRevision: number | null, currentRevision: number) => boolean;
export declare const readCameraFollowPosition: (target: CameraFollowTarget) => CameraFollowPosition | null;
export declare const followCameraInstantly: (viewport: any, target: CameraFollowTarget, smoothMove: CameraFollowSmoothMove) => boolean;
export declare const syncCameraFollowPosition: (viewport: any, target: CameraFollowTarget, smoothMove: CameraFollowSmoothMove) => boolean;
export declare const applyCameraFollow: ({ viewport, target, smoothMove, followRevision, isCurrentRevision, shouldFollowCamera, pixelSnap, }: CameraFollowApplyContext) => CameraFollowOwnership | null;