import * as THREE from 'three';
import type { CameraController } from './camera-controller.js';
/** Options for {@link createFollowCamera}: required local-frame `offset`, look-ahead point, and position/rotation damping stiffness. */
export interface FollowCameraOptions {
    offset: THREE.Vector3;
    lookAhead?: THREE.Vector3;
    stiffness?: number;
    rotationStiffness?: number;
}
/**
 * Chase camera: keeps `offset` in the target's local frame and looks at a
 * `lookAhead` point ahead of it, both with framerate-independent exponential
 * damping.
 *
 * @param camera - Camera to move.
 * @param target - Object to chase; swap via the returned controller's `follow`.
 * @param options - Offset (required), look-ahead, and stiffness tuning.
 * @returns A `CameraController` locked to follow mode; call `update(ctx)`
 * every frame.
 * @throws Error when `offset` is missing.
 * @remarks Three scratch vectors per frame, zero allocation.
 */
export declare function createFollowCamera(camera: THREE.Camera, target: THREE.Object3D, { offset, lookAhead, stiffness, rotationStiffness, }: FollowCameraOptions): CameraController;
//# sourceMappingURL=follow-camera.d.ts.map