import * as THREE from 'three';
/** Options for {@link createLightCone}: beam color and base-radius `spread`. */
export interface LightConeOptions {
    color?: THREE.ColorRepresentation;
    /** Cone base radius as a fraction of its length. Default 0.16. */
    spread?: number;
}
/**
 * Fake volumetric light shaft: an open additive-blended cone from `from` to
 * `to` whose shader fades toward the base and edges. Pure mesh — no real
 * volumetrics, no shadowing, very cheap.
 *
 * @param from - Apex (the light source position).
 * @param to - Where the beam lands; sets length and orientation.
 * @param options - Color and spread.
 * @returns The cone mesh; dispose its geometry/material when done.
 */
export declare function createLightCone(from: THREE.Vector3, to: THREE.Vector3, { color, spread }?: LightConeOptions): THREE.Mesh;
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