/** SVG path geometry: sampling, length, morphing. */
export interface PathPoint {
    x: number;
    y: number;
}
/** Flatten an SVG path `d` into polylines (M/L/H/V/C/Q/Z subset). */
export declare function parsePathSegments(d: string): PathPoint[][];
/** Total polyline length of a path. */
export declare function getPathLength(d: string): number;
export interface PointOnPath {
    x: number;
    y: number;
    angle: number;
}
/** Point and tangent angle (degrees) at distance along path. */
export declare function getPointAtLength(d: string, distance: number): PointOnPath;
/** Uniformly sample path into N points for morphing. */
export declare function samplePath(d: string, samples: number): PathPoint[];
/** Interpolate between two path `d` strings (resampled to equal point count). */
export declare function morphPath(from: string, to: string, t: number, samples?: number): string;
/** Rect outline as closed path (for morph demos). */
export declare function rectPath(width: number, height: number, cornerRadius?: number): string;