import { Object3D, Vector3, Vector3Tuple, Ray } from 'three';
export declare const FirstPersonCharacterCameraBehavior: CharacterCameraBehaviorOptions;
export type CharacterCameraBehaviorOptions = {
    /**
     * @default true
     */
    collision?: {
        /**
         * @default 0.2
         */
        offset?: number;
    } | boolean;
    /**
     * @default [0,1.3,0]
     */
    characterBaseOffset?: Vector3 | Vector3Tuple;
    /**
     * @default true
     */
    rotation?: {
        /**
         * @default -Math.PI/2
         */
        minPitch?: number;
        /**
         * @default Math.PI/2
         */
        maxPitch?: number;
        /**
         * @default -Infinity
         */
        minYaw?: number;
        /**
         * @default +Infinity
         */
        maxYaw?: number;
        /**
         * @default 1.0
         */
        speed?: number;
    } | boolean;
    /**
     * @default true
     */
    zoom?: {
        /**
         * @default 1.0
         */
        speed?: number;
        /**
         * @default 1
         */
        minDistance?: number;
        /**
         * @default 7
         */
        maxDistance?: number;
    } | boolean;
} | boolean;
export declare class CharacterCameraBehavior {
    rotationPitch: number;
    rotationYaw: number;
    zoomDistance: number;
    private collisionFreeZoomDistance;
    private firstUpdate;
    private readonly abortController;
    private readonly yawReader;
    private readonly pitchReader;
    private readonly zoomReader;
    private setRotationFromDelta;
    private setDistanceFromDelta;
    private computeCharacterBaseOffset;
    private clampDistance;
    private clampYaw;
    private clampPitch;
    /**
     * @param delta in seconds
     */
    update(camera: Object3D, target: Object3D, deltaTime: number, raycast?: (ray: Ray, far: number) => number | undefined, options?: CharacterCameraBehaviorOptions): void;
    dispose(): void;
}