/**
 * S-57 data model types.
 *
 * S-57 has two main record categories:
 * - Feature Records (FRID): describe real-world objects (buoys, depths, coastlines...)
 * - Spatial Records (VRID): store the geometry (nodes, edges with coordinates)
 *
 * Features reference spatial records via FSPT (Feature to Spatial Pointer Table).
 * Geometry is resolved by following these references and applying COMF scaling.
 */
/** Parsed S-57 dataset */
export interface S57Dataset {
    /** Dataset name (e.g. "US5MA19M.000") */
    name: string;
    /** Coordinate multiplication factor (typically 10_000_000) */
    comf: number;
    /** Sounding multiplication factor (typically 10) */
    somf: number;
    /** All feature records */
    features: FeatureRecord[];
    /** All spatial records, keyed by compound key (rcnm * 100000 + rcid) */
    spatialRecords: Map<number, SpatialRecord>;
}
/** S-57 Feature Record */
export interface FeatureRecord {
    /** Record ID */
    rcid: number;
    /** Object label code (links to S-57 object catalogue, e.g. 4=AIRARE, 86=LNDARE) */
    objl: number;
    /** Geometric primitive: 1=Point, 2=Line, 3=Area, 255=None */
    prim: GeomPrimitive;
    /** Group: 1=Bathymetric/cartographic, 2=Other */
    grup: number;
    /** Attributes: ATTL (code) -> ATVL (value string) */
    attributes: Map<number, string>;
    /** References to spatial records */
    spatialRefs: SpatialRef[];
    /** Feature object ID for cross-reference */
    foid?: FeatureObjectId;
}
/** Geometric primitive */
export declare enum GeomPrimitive {
    Point = 1,
    Line = 2,
    Area = 3,
    None = 255
}
/** Feature to spatial record reference */
export interface SpatialRef {
    /** RCNM+RCID packed reference: use rcid to look up spatial record */
    rcnm: number;
    rcid: number;
    /** Orientation: 1=Forward, 2=Reverse, 255=NULL */
    ornt: number;
    /** Usage: 1=Exterior, 2=Interior, 3=Exterior boundary truncated, 255=NULL */
    usag: number;
    /** Masking: 1=Mask, 2=Show, 255=NULL */
    mask: number;
}
/** Feature Object ID */
export interface FeatureObjectId {
    /** Producing agency */
    agen: number;
    /** Feature identification number */
    fidn: number;
    /** Feature identification subdivision */
    fids: number;
}
/** S-57 Spatial Record */
export interface SpatialRecord {
    rcid: number;
    /** Record name: 110=Isolated Node, 120=Connected Node, 130=Edge, 140=Face */
    rcnm: SpatialType;
    /** 2D coordinates (lat/lon in degrees, after COMF division) */
    coordinates2D: Coordinate2D[];
    /** 3D coordinates (sounding points) */
    coordinates3D: Coordinate3D[];
    /** For Edge records: RCID of the start connected node (VRPT TOPI=1) */
    startNodeRcid?: number;
    /** For Edge records: RCID of the end connected node (VRPT TOPI=2) */
    endNodeRcid?: number;
}
export declare enum SpatialType {
    IsolatedNode = 110,
    ConnectedNode = 120,
    Edge = 130,
    Face = 140
}
export interface Coordinate2D {
    /** Latitude in degrees */
    lat: number;
    /** Longitude in degrees */
    lon: number;
}
export interface Coordinate3D extends Coordinate2D {
    /** Depth/elevation in metres (after SOMF division) */
    depth: number;
}
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