import { ShapeTextWarp } from '../../../../contracts/src/index.js';
export type WordArtWarpPoint = {
    x: number;
    y: number;
};
export type WordArtWarpGeometry = {
    paths: WordArtWarpPoint[][];
    /** One boundary bends a baseline; two or more boundaries define a glyph envelope. */
    kind: 'baseline' | 'envelope';
};
export type WordArtWarpPath = {
    d: string;
    fidelity: 'baseline' | 'envelope';
    /** Polyline length of the evaluated preset path in layout coordinates. */
    length: number;
};
export type WordArtBaselineBand = {
    geometry: WordArtWarpGeometry;
    path: WordArtWarpPath;
};
export declare function resolveWordArtWarpGeometry(warp: ShapeTextWarp, width: number, height: number, top?: number): WordArtWarpGeometry | null;
/**
 * Resolve the centerline between two adjacent authored warp boundaries.
 *
 * A small family of DrawingML presets uses shared boundaries to compose
 * successive text bands (for example textButton's upper/center/lower paths).
 * Word lays each line on the corresponding band centerline and preserves the
 * glyph outlines instead of stretching the ink through the whole envelope.
 */
export declare function resolveWordArtAdjacentBandBaseline(geometry: WordArtWarpGeometry, bandIndex: number): WordArtBaselineBand | null;
/** Baseline compatibility surface used by the SVG textPath renderer and diagnostics. */
export declare function resolveWordArtWarpPath(warp: ShapeTextWarp, width: number, height: number, top?: number): WordArtWarpPath | null;
export declare function pointAtPath(points: readonly WordArtWarpPoint[], progress: number): WordArtWarpPoint;
/**
 * Resolve the DrawingML text-warp percentage on a flattened boundary path.
 * ECMA-376 §20.1.9.19 steps 6–8 require travelled distance after flattening,
 * not the curve's command, sample, or angle parameter.
 */
export declare function pointAtWarpParameter(points: readonly WordArtWarpPoint[], progress: number): WordArtWarpPoint;