import { Rect } from './utils/math2d';
import { CurveTo, QCurveTo, SmoothCurveTo, SmoothQCurveTo } from './command';
import { PathNode } from './path-node';
export declare type CurveNode = PathNode & (CurveTo | QCurveTo | SmoothCurveTo | SmoothQCurveTo);
export declare type SmoothCurveNode = PathNode & (SmoothCurveTo | SmoothQCurveTo);
/**
 * The S/s and T/t commands indicate that the first control point of the given cubic/quadratic
 * Bézier curve is calculated by reflecting the previous path segment's final control point
 * relative to the current point.
 *
 * The exact math is as follows.
 * If the current point is (curx, cury)
 * and the final control point of the previous path segment is (oldx2, oldy2),
 * then the first control point of the current path segment (reflected point) is:
 *
 * (newx1, newy1) = (curx - (oldx2 - curx), cury - (oldy2 - cury)) = (2*curx - oldx2, 2*cury - oldy2)
 */
export declare function getReflectedX1(node: Readonly<SmoothCurveNode>): number;
export declare function getReflectedY1(node: Readonly<SmoothCurveNode>): number;
export declare function getFirstControlX(node: Readonly<CurveNode>): number;
export declare function getFirstControlY(node: Readonly<CurveNode>): number;
export declare function getLastControlX(node: Readonly<CurveNode>): number;
export declare function getLastControlY(node: Readonly<CurveNode>): number;
export declare function getQCurveBoundingRect(node: Readonly<PathNode & (QCurveTo | SmoothQCurveTo)>): Rect;
export declare function getCurveBoundingRect(node: Readonly<PathNode & (CurveTo | SmoothCurveTo)>): Rect;