import * as THREE from 'three';
/** Scratch pair handed to a {@link PlaceFn}: set the `object` transform and instance `color`. */
export interface InstancePlacement {
    object: THREE.Object3D;
    color: THREE.Color;
}
/** Places instance `index`: mutate `object` position/rotation/scale and `color`; `rng` is the field's seeded stream. */
export type PlaceFn = (index: number, rng: () => number, object: THREE.Object3D, color: THREE.Color) => void;
/** Options for {@link createInstancedField}: geometry/material/count plus seeded scatter tuning (radius, hue, scale) or a custom `place`. */
export interface InstancedFieldOptions {
    geometry: THREE.BufferGeometry;
    material: THREE.Material;
    count: number;
    radius?: number;
    seed?: number;
    hueBase?: number;
    hueSpread?: number;
    scaleMin?: number;
    scaleMax?: number;
    place?: PlaceFn;
}
/**
 * One geometry × N transforms as a single `InstancedMesh` draw call — grass,
 * trees, asteroids, bullets, scatter. Default placement is a seeded radial
 * scatter with per-instance hue/scale variation; pass `place` for arbitrary
 * layouts.
 *
 * @param options - Geometry, material, `count` (buffers size once), and
 * placement tuning.
 * @returns The `InstancedMesh` with per-instance colors enabled.
 * @remarks Same `seed` → identical field. One draw call regardless of count.
 */
export declare function createInstancedField({ geometry, material, count, radius, seed, hueBase, hueSpread, scaleMin, scaleMax, place, }: InstancedFieldOptions): THREE.InstancedMesh;
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