/**
 * PLY (Stanford Polygon) reader — point clouds only.
 *
 * Supports `format ascii 1.0`, `format binary_little_endian 1.0`, and
 * `format binary_big_endian 1.0`. Reads the `vertex` element exclusively;
 * `face` and other elements are skipped (they're meaningful for surface
 * meshes but not for the scan-style files this viewer ingests).
 *
 * Position fields (x/y/z) are required. RGB (r/g/b or red/green/blue,
 * uchar) and intensity (intensity, uchar/ushort/float) are optional and
 * surfaced when present. Returns a single `DecodedPointChunk` — large
 * .ply files (>25M points) get bounded by `streamPointCloud`'s memory
 * cap which downsamples upstream.
 */
import type { DecodedPointChunk } from '../types.js';
interface PropertyDecl {
    name: string;
    type: string;
    size: number;
    /** Byte offset within a single vertex record (binary mode only). */
    offset: number;
}
interface ElementDecl {
    name: string;
    count: number;
    properties: PropertyDecl[];
    /** Bytes per record (binary mode); unused for ascii. */
    recordSize: number;
    /**
     * The element declares at least one `property list`. Lists are variable
     * length, so `recordSize`/`properties` no longer describe the full record —
     * fine for skipped elements (faces), fatal for the vertex element the
     * decoders walk with a fixed stride.
     */
    hasListProperty: boolean;
}
export interface PlyHeader {
    format: 'ascii' | 'binary_little_endian' | 'binary_big_endian';
    version: string;
    elements: ElementDecl[];
    /** Byte offset where the body data starts. */
    bodyOffset: number;
}
export declare function parsePlyHeader(buffer: Uint8Array): PlyHeader;
export declare function decodePly(buffer: Uint8Array): DecodedPointChunk;
export {};
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