import type { GlyphId } from "../../types.ts";
import type { Reader } from "../binary/reader.ts";
import { type DeltaSetIndexMap, type ItemVariationStore } from "./hvar.ts";
/**
 * Vertical Metrics Variations table (VVAR)
 * Provides variations for vertical advance heights and side bearings
 */
export interface VvarTable {
    majorVersion: number;
    minorVersion: number;
    itemVariationStore: ItemVariationStore;
    advanceHeightMapping: DeltaSetIndexMap | null;
    tsbMapping: DeltaSetIndexMap | null;
    bsbMapping: DeltaSetIndexMap | null;
    vOrgMapping: DeltaSetIndexMap | null;
}
/**
 * Parse VVAR table
 */
export declare function parseVvar(reader: Reader): VvarTable;
/**
 * Get advance height delta for a glyph at given variation coordinates
 */
export declare function getAdvanceHeightDelta(vvar: VvarTable, glyphId: GlyphId, coords: number[]): number;
/**
 * Get top side bearing delta for a glyph at given variation coordinates
 */
export declare function getTsbDelta(vvar: VvarTable, glyphId: GlyphId, coords: number[]): number;
/**
 * Get bottom side bearing delta for a glyph at given variation coordinates
 */
export declare function getBsbDelta(vvar: VvarTable, glyphId: GlyphId, coords: number[]): number;
/**
 * Get vertical origin delta for a glyph at given variation coordinates
 */
export declare function getVorgDelta(vvar: VvarTable, glyphId: GlyphId, coords: number[]): number;