import type { Box2Like } from './box2';
import type { Circle2Like } from './circle2';
import type { Vec2, Vec2Like } from './types';
/** 2D ray storage: [originX, originY, directionX, directionY, maxDistance]. */
export type Ray2 = Float32Array & {
    readonly __ray2: void;
};
/** Readable 2D ray input. */
export type Ray2Like = ArrayLike<number>;
/** Result shared by AABB, circle, and swept-volume intersection tests. */
export interface Ray2Intersection {
    hit: boolean;
    /** Entry distance along the normalized ray, clamped to zero when inside. */
    t: number;
}
/** Create a normalized finite 2D ray. `maxDistance` defaults to infinity. */
export declare function create(out?: Float32Array, origin?: Vec2Like, direction?: Vec2Like, maxDistance?: number): Ray2;
/** Copy the ray origin to out. */
export declare function getOrigin(out: Vec2, ray: Ray2Like): Vec2;
/** Copy the normalized ray direction to out. */
export declare function getDirection(out: Vec2, ray: Ray2Like): Vec2;
/** Return the ray's finite travel limit. */
export declare function getMaxDistance(ray: Ray2Like): number;
/** Set the ray origin. */
export declare function setOrigin(ray: Ray2, origin: Vec2Like): Ray2;
/** Set and normalize the ray direction. */
export declare function setDirection(ray: Ray2, direction: Vec2Like): Ray2;
/** Set the ray's non-negative travel limit. */
export declare function setMaxDistance(ray: Ray2, maxDistance: number): Ray2;
/** Intersect a finite ray with an AABB using the 2D slab method. */
export declare function rayAabbIntersects(ray: Ray2Like, box: Box2Like): Ray2Intersection;
/** Intersect a finite ray with a bounding circle. */
export declare function rayCircleIntersects(ray: Ray2Like, circle: Circle2Like): Ray2Intersection;
/** Sweep an AABB along a finite ray and intersect it with a target AABB. */
export declare function aabbCastIntersects(ray: Ray2Like, moving: Box2Like, target: Box2Like): Ray2Intersection;
/** Sweep a circle along a finite ray and intersect it with a target circle. */
export declare function circleCastIntersects(ray: Ray2Like, moving: Circle2Like, target: Circle2Like): Ray2Intersection;
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