/**
 * S-52 Lookup Table: maps S-57 object class codes (OBJL) to rendering instructions.
 *
 * This is a simplified version of the full S-52 Presentation Library.
 * Real S-52 uses conditional symbology procedures (CSP) for objects
 * like DEPARE, SOUNDG, LIGHTS. Here we use direct lookup with
 * depth-based coloring for DEPARE.
 */
export type SymbolType = 'area' | 'line' | 'point' | 'text';
export interface RenderInstruction {
    type: SymbolType;
    /** Fill color token (for areas) */
    fill?: string;
    /** Fill opacity 0..1 */
    fillAlpha?: number;
    /** Stroke color token */
    stroke?: string;
    /** Stroke width in pixels */
    strokeWidth?: number;
    /** Dash pattern (array of [dash, gap] lengths) */
    dashPattern?: number[];
    /** Point radius in pixels */
    radius?: number;
    /** Point shape */
    shape?: 'circle' | 'triangle' | 'square' | 'diamond';
    /** Display priority (0=bottom, 9=top). S-52 uses 0-9. */
    priority: number;
    /** Human-readable name */
    description?: string;
    /** ATTL code to use as text label (e.g. 174=VALSOU for soundings) */
    textAttl?: number;
    /** Color token for text */
    textColor?: string;
    /** Font size in pixels */
    textSize?: number;
    /** Text alignment */
    textAlign?: CanvasTextAlign;
    /** Text vertical offset in pixels (positive = down) */
    textOffsetY?: number;
    /** Format function name for text value ('depth'|'depthContour'|'lightChar') */
    textFormat?: 'depth' | 'depthContour' | 'lightChar';
    /** Whether this object can render sector arcs */
    sectorLight?: boolean;
    /** Arc radius for sector lights */
    sectorRadius?: number;
    /** Pattern type for area fill */
    pattern?: 'hatch' | 'cross-hatch' | 'stipple';
    /** Pattern spacing in pixels */
    patternSpacing?: number;
    /** Pattern color token */
    patternColor?: string;
}
/**
 * S-57 OBJL codes for the most common navigational objects.
 * Full catalogue has 200+ codes; these cover ~90% of typical chart content.
 */
export declare const OBJL: {
    readonly ADMARE: 1;
    readonly ACHBRT: 2;
    readonly ACHARE: 3;
    readonly BCNCAR: 5;
    readonly BCNLAT: 8;
    readonly BERTHS: 11;
    readonly BRIDGE: 12;
    readonly BUISGL: 13;
    readonly BUAARE: 14;
    readonly BOYCAR: 15;
    readonly BOYLAT: 17;
    readonly BOYSAW: 19;
    readonly BOYSPP: 20;
    readonly CBLOHD: 21;
    readonly CBLSUB: 22;
    readonly CANALS: 23;
    readonly COALNE: 30;
    readonly CONZNE: 31;
    readonly DEPARE: 42;
    readonly DEPCNT: 43;
    readonly DMPGRD: 46;
    readonly DWRTCL: 48;
    readonly FAIRWY: 49;
    readonly FERYRT: 51;
    readonly FSHZNE: 54;
    readonly FOGSIG: 55;
    readonly GATCON: 57;
    readonly LNDARE: 71;
    readonly LNDELV: 72;
    readonly LIGHTS: 75;
    readonly LITFLT: 76;
    readonly LNDMRK: 77;
    readonly LOKBSN: 78;
    readonly MAGVAR: 79;
    readonly MARCUL: 81;
    readonly MIPARE: 83;
    readonly MORFAC: 84;
    readonly OBSTRN: 86;
    readonly OFSPLF: 87;
    readonly OSPARE: 89;
    readonly PILBOP: 90;
    readonly PILPNT: 91;
    readonly PIPOHD: 92;
    readonly PIPSOL: 93;
    readonly PRDARE: 95;
    readonly RAILWY: 97;
    readonly RECTRC: 98;
    readonly RESARE: 112;
    readonly RIVERS: 114;
    readonly ROADWY: 116;
    readonly RUNWAY: 117;
    readonly SBDARE: 119;
    readonly SLCONS: 122;
    readonly SLOGRD: 123;
    readonly SOUNDG: 129;
    readonly SPRING: 131;
    readonly SWPARE: 134;
    readonly TOPMAR: 144;
    readonly TSELNE: 148;
    readonly TSEZNE: 149;
    readonly TSSBND: 150;
    readonly TSSCRS: 151;
    readonly TSSRON: 152;
    readonly TWRTPT: 153;
    readonly UWTROC: 154;
    readonly WATTUR: 155;
    readonly WRECKS: 159;
    readonly M_COVR: 302;
    readonly M_CSCL: 303;
    readonly M_HOPA: 304;
    readonly M_NPUB: 305;
    readonly M_NSYS: 306;
    readonly M_QUAL: 308;
    readonly M_SDAT: 309;
    readonly M_SREL: 310;
    readonly M_VDAT: 312;
};
/**
 * Default lookup table for S-52 rendering.
 * Maps OBJL code to rendering instructions.
 */
export declare const LOOKUP_TABLE: Map<number, RenderInstruction>;
/** Default fallback rendering for unknown OBJL codes */
export declare const DEFAULT_INSTRUCTION: RenderInstruction;
export { ATTL } from '@s57-parser/s57';
/** Map S-57 COLOUR code to light color token */
export declare function lightColorToken(colourCode: string | undefined): string;
/**
 * Format a depth value for chart display (S-52 style).
 * Whole meters: "12". Decimeters: "12₃" (subscript last digit).
 */
export declare function formatDepth(value: string | number): string;
/**
 * Format light characteristic label (S-52 style).
 * Example: "Fl(3) 10s" for flashing, group of 3, period 10s.
 */
export declare function formatLightChar(attrs: Map<number, string>): string;
/**
 * Get the depth-dependent fill color for a DEPARE feature.
 * Uses DRVAL1 (minimum depth) and DRVAL2 (maximum depth) attributes.
 */
export declare function depareColor(drval1: number, drval2: number): string;
/**
 * Look up rendering instruction for an S-57 feature.
 * Handles conditional symbology for DEPARE and LIGHTS.
 */
export declare function lookupInstruction(objl: number, attributes?: Map<number, string>): RenderInstruction;
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