import type { ElementSymbol } from '../element';
import type { Vec3 } from '../math';
import type { AnyStructure, BondPair } from './';
export type PolyhedraColorMode = `vertex` | `center` | `uniform`;
export interface PolyhedraOptions {
    min_neighbors?: number;
    max_neighbors?: number;
    excluded_center_elements?: readonly string[];
    included_center_elements?: readonly string[];
    electronegativity_margin?: number;
    distance_factor?: number;
    weak_bond_norm?: number;
    volume_eps?: number;
}
export interface ConvexHullResult {
    vertices: Vec3[];
    input_idxs: number[];
    faces: [number, number, number][];
    volume: number;
}
export interface Polyhedron {
    center_site_idx: number;
    center_orig_idx: number;
    center_element: ElementSymbol;
    vertices: Vec3[];
    vertex_site_idxs: number[];
    faces: [number, number, number][];
    volume: number;
}
export interface MergedPolyhedraBuffers {
    positions: Float32Array;
    colors: Float32Array;
    edge_positions: Float32Array;
    triangle_count: number;
    edge_count: number;
}
export declare function convex_hull_3d(points: readonly Vec3[], eps_scale?: number): ConvexHullResult;
export declare function build_adjacency(bonds: readonly BondPair[]): Map<number, Set<number>>;
export declare const is_spectator_center: (element: string) => boolean;
export declare function compute_polyhedra(structure: AnyStructure, bonds: readonly BondPair[], options?: PolyhedraOptions): Polyhedron[];
export declare function merge_polyhedra_buffers(polyhedra: readonly Polyhedron[], get_vertex_color: (poly: Polyhedron, vertex_idx: number) => string, coplanar_tol?: number): MergedPolyhedraBuffers;