import { Flatland } from "../Flatland.js";
import * as THREE from "three";
//#region src/react/flatlandEvents.d.ts
/**
 * Minimal structural slice of R3F's RootState that compute touches.
 * Typed structurally so this module needs no @react-three/fiber import
 * (the core package must not depend on R3F — only consume its shapes).
 */
interface ComputeState {
  pointer: {
    set(x: number, y: number): void;
    x: number;
    y: number;
  };
  raycaster: {
    setFromCamera(pointer: {
      x: number;
      y: number;
    }, camera: THREE.Camera): void;
  };
}
/**
 * Build an R3F portal `events.compute` for content portaled into a
 * Flatland's internal scene (spec §8.1).
 *
 * The parent root's default compute already derived pointer NDC from
 * the canvas; flatland renders full-viewport through its own
 * orthographic camera, so the same NDC re-cast from `flatland.camera`
 * yields the correct ray. When flatland isn't ready yet, the compute
 * returns without calling `setFromCamera` — R3F then skips this root
 * for the event (its documented `raycaster.camera === undefined`
 * signal).
 *
 * @example
 * createPortal(children, flatland.scene, {
 *   events: { compute: createFlatlandCompute(() => flatlandRef.current), priority: 1 },
 * })
 */
declare function createFlatlandCompute(getFlatland: () => Flatland | null): (_event: unknown, state: ComputeState & {
  raycaster: {
    camera?: unknown;
  };
}, previous?: ComputeState) => void;
//#endregion
export { createFlatlandCompute };
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