import type { PhysicsWorld } from "./physicsWorld.js";
export interface BallisticSweepHit {
    point: [number, number, number];
    time: number;
}
export type BallisticSweep = (origin: readonly [number, number, number], velocity: readonly [number, number, number], gravity: number, maxTime: number) => BallisticSweepHit | null;
export interface BallisticSweepOptions {
    /** Fixed march interval along the arc, in seconds. Default 1/60. */
    step?: number;
    /** Projectile radius; each body AABB is inflated by this before the point test. Default 0. */
    radius?: number;
}
/**
 * Sweeps each short chord of the closed-form arc through live body AABBs, including sleeping bodies.
 * Thin cover between samples blocks; `step` controls the approximation of the curved path.
 */
export declare function createBallisticSweep(world: PhysicsWorld, options?: BallisticSweepOptions): BallisticSweep;
/** Contact fraction for a point segment against a translating axis-aligned box; inflate extents for a projectile radius.
 * @capability moving-box-sweep detect contact with boxes crossing a projectile segment between simulation poses
 */
export declare function sweepMovingBounds(from: readonly [number, number, number], to: readonly [number, number, number], targetFrom: readonly [number, number, number], targetTo: readonly [number, number, number], halfExtents: readonly [number, number, number]): number | null;
/** Contact fraction for a point segment against a translating sphere; add the projectile radius to `radius`.
 * @capability moving-sphere-sweep detect contact with spheres crossing a projectile segment between simulation poses
 */
export declare function sweepMovingSphere(from: readonly [number, number, number], to: readonly [number, number, number], targetFrom: readonly [number, number, number], targetTo: readonly [number, number, number], radius: number): number | null;