import type { Matrix4 } from '@galacean/effects-math/es/core/matrix4';
import { Polygon } from './polygon';
import type { GraphicsPath } from './graphics-path';
import type { ShapePrimitive } from './shape-primitive';
import type { StarType } from './poly-star';
export declare class ShapePath {
    private graphicsPath;
    currentPoly: Polygon | null;
    shapePrimitives: {
        shape: ShapePrimitive;
        transform?: Matrix4;
    }[];
    constructor(graphicsPath: GraphicsPath);
    /** Builds the path. */
    buildPath(): void;
    /**
     * Adds a cubic Bezier curve to the path.
     * It requires three points: the first two are control points and the third one is the end point.
     * The starting point is the last point in the current path.
     * @param cp1x - The x-coordinate of the first control point.
     * @param cp1y - The y-coordinate of the first control point.
     * @param cp2x - The x-coordinate of the second control point.
     * @param cp2y - The y-coordinate of the second control point.
     * @param x - The x-coordinate of the end point.
     * @param y - The y-coordinate of the end point.
     * @param smoothness - Optional parameter to adjust the smoothness of the curve.
     * @returns The instance of the current object for chaining.
     */
    bezierCurveTo(cp1x: number, cp1y: number, cp2x: number, cp2y: number, x: number, y: number, smoothness?: number): ShapePath;
    moveTo(x: number, y: number): ShapePath;
    /**
     * Closes the current path by drawing a straight line back to the start.
     * If the shape is already closed or there are no points in the path, this method does nothing.
     * @returns The instance of the current object for chaining.
     */
    closePath(): this;
    /**
     * Draws an ellipse at the specified location and with the given x and y radii.
     * An optional transformation can be applied, allowing for rotation, scaling, and translation.
     * @param x - The x-coordinate of the center of the ellipse.
     * @param y - The y-coordinate of the center of the ellipse.
     * @param radiusX - The horizontal radius of the ellipse.
     * @param radiusY - The vertical radius of the ellipse.
     * @param transform - An optional `Matrix` object to apply a transformation to the ellipse. This can include rotations.
     * @returns The instance of the current object for chaining.
     */
    ellipse(x: number, y: number, radiusX: number, radiusY: number, transform?: Matrix4): this;
    polyStar(pointCount: number, outerRadius: number, innerRadius: number, outerRoundness: number, innerRoundness: number, starType: StarType, transform?: Matrix4): this;
    /**
     * Draws a rectangle shape. This method adds a new rectangle path to the current drawing.
     * @param x - The x-coordinate of the upper-left corner of the rectangle.
     * @param y - The y-coordinate of the upper-left corner of the rectangle.
     * @param w - The width of the rectangle.
     * @param h - The height of the rectangle.
     * @param transform - An optional `Matrix` object to apply a transformation to the rectangle.
     * @returns The instance of the current object for chaining.
     */
    rect(x: number, y: number, w: number, h: number, roundness: number, transform?: Matrix4): this;
    /**
     * Draws a given shape on the canvas.
     * This is a generic method that can draw any type of shape specified by the `ShapePrimitive` parameter.
     * An optional transformation matrix can be applied to the shape, allowing for complex transformations.
     * @param shape - The shape to draw, defined as a `ShapePrimitive` object.
     * @param matrix - An optional `Matrix` for transforming the shape. This can include rotations,
     * scaling, and translations.
     * @returns The instance of the current object for chaining.
     */
    drawShape(shape: ShapePrimitive, matrix?: Matrix4): this;
    /**
     * Starts a new polygon path from the specified starting point.
     * This method initializes a new polygon or ends the current one if it exists.
     * @param x - The x-coordinate of the starting point of the new polygon.
     * @param y - The y-coordinate of the starting point of the new polygon.
     * @returns The instance of the current object for chaining.
     */
    private startPoly;
    /**
     * Ends the current polygon path. If `closePath` is set to true,
     * the path is closed by connecting the last point to the first one.
     * This method finalizes the current polygon and prepares it for drawing or adding to the shape primitives.
     * @param closePath - A boolean indicating whether to close the polygon by connecting the last point
     *  back to the starting point. False by default.
     * @returns The instance of the current object for chaining.
     */
    private endPoly;
    private ensurePoly;
}