import * as arrow from 'apache-arrow';
import type { WorkerOptions } from '@loaders.gl/worker-utils';
import type { GeoArrowEncoding } from '@loaders.gl/geoarrow';
import { BinaryDataFromGeoArrow } from '@loaders.gl/gis';
export type TriangulationWorkerInput = ({
    operation: 'triangulate';
} & TriangulateInput) | ParseGeoArrowInput | {
    operation: 'test';
    data: any;
};
export type TriangulationWorkerOutput = ({
    operation: 'triangulate';
} & TriangulateResult) | ({
    operation: 'parse-geoarrow';
} & ParseGeoArrowResult) | {
    operation: 'test';
    data: any;
};
type GeoArrowChunkData = {
    type: arrow.DataType;
    offset: number;
    length: number;
    nullCount: number;
    buffers: any;
    children: arrow.Data[];
    dictionary?: arrow.Vector;
};
export type ParseGeoArrowInput = {
    operation: 'parse-geoarrow';
    chunkData: GeoArrowChunkData;
    chunkIndex: number;
    chunkOffset: number;
    geometryEncoding: GeoArrowEncoding;
    calculateMeanCenters: boolean;
    triangle: boolean;
};
export type ParseGeoArrowResult = {
    chunkIndex: number;
    binaryDataFromGeoArrow: BinaryDataFromGeoArrow | null;
};
/** Input data for operation: 'triangulate' */
export type TriangulateInput = {
    polygonIndices: Uint16Array;
    primitivePolygonIndices: Int32Array;
    flatCoordinateArray: Float64Array;
    nDim: number;
};
/** Result type for operation: 'triangulate' */
export type TriangulateResult = TriangulateInput & {
    triangleIndices?: Uint32Array;
};
/**
 * Worker for tessellating geometries. Normally called through triangulateOnWorker
 */
export declare const TriangulationWorker: {
    id: string;
    name: string;
    module: string;
    version: any;
    options: {};
};
/**
 * Triangulate a set of polygons on worker, type safe API
 */
export declare function triangulateOnWorker(data: TriangulateInput, options?: WorkerOptions): Promise<TriangulateResult>;
/**
 * Parse GeoArrow geometry colum on worker, type safe API
 */
export declare function parseGeoArrowOnWorker(data: ParseGeoArrowInput, options?: WorkerOptions): Promise<ParseGeoArrowResult>;
export {};
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