import { DeformFn } from './core';
export interface OutlineBuf {
    xy: Float32Array;
    n: number;
}
export declare function createOutlineBuf(capacity?: number): OutlineBuf;
/**
 * Sample a rounded rect clockwise from the end of the top-left corner. Edges
 * every ~1.5 CSS px, 14 points per corner arc — dense enough that a gaussian
 * dent a few px wide stays smooth. `deform` (optional) displaces each point.
 */
export declare function roundRectOutline(x: number, y: number, w: number, h: number, r: number, deform: DeformFn | null, buf?: OutlineBuf): OutlineBuf;
/** SVG path data for an outline (closed). */
export declare function outlinePathD(buf: OutlineBuf): string;