import * as THREE from 'three';
import { type RenderQuality } from '../quality/renderQuality';
/**
 * Runtime handle returned by {@link buildCoreMesh}. Wraps the molten inner-core
 * sphere mesh, the radiating point-light at its centre, the per-frame
 * animation hook driving both, and a disposal entry point.
 */
export interface CoreMesh {
    mesh: THREE.Mesh;
    /** Pulsing point-light parented to the mesh — escapes the body wherever a sol tile has been mined out. */
    light: THREE.PointLight;
    radius: number;
    /** Advances the fire shader animation and the light's breathing intensity. */
    tick: (elapsed: number) => void;
    dispose: () => void;
}
/**
 * Configuration accepted by {@link buildCoreMesh}. `coreRadiusRatio` defaults
 * to {@link DEFAULT_CORE_RADIUS_RATIO} when omitted.
 */
export interface CoreMeshConfig {
    radius: number;
    coreRadiusRatio?: number;
    /** Optional render-quality bag — bumps the icosphere detail in `'high'`. */
    quality?: RenderQuality;
}
/**
 * Builds the molten inner-core sphere shared by every non-stellar body.
 *
 * The core sits at `radius * coreRadiusRatio` and is rendered with a
 * procedural fire shader (warped FBM + sparkle layer over a deep-red →
 * white-hot palette). A {@link THREE.PointLight} is parented to the mesh
 * so the light follows the body's transform and only escapes the planet
 * through tiles that have been mined down to band 0.
 *
 * The mesh is non-interactive (`raycast = () => {}`) — tile picking
 * happens on the surrounding sol layer.
 *
 * @param cfg - Core mesh configuration (radius, optional ratio).
 * @returns   The mesh, its accompanying light, world radius, per-frame
 *            tick and a disposal hook.
 */
export declare function buildCoreMesh(cfg: CoreMeshConfig): CoreMesh;
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