import type { Vector2 } from "../math/Vector2.ts";
import { Path } from "./Path.ts";

/** Closed 2D path with optional holes, used for extrusion. */
export class Shape extends Path {
	override type = "Shape";
	#holes: Path[] = [];

	get holes(): Path[] {
		return this.#holes;
	}

	/** Returns an array of point arrays, one per hole. */
	getPointsHoles(divisions: number): Vector2[][] {
		return this.#holes.map((hole) => hole.getPoints(divisions) as Vector2[]);
	}

	/** Returns the shape outline points and hole points. */
	extractPoints(divisions: number): {
		shape: Vector2[];
		holes: Vector2[][];
	} {
		return {
			shape: this.getPoints(divisions) as Vector2[],
			holes: this.getPointsHoles(divisions),
		};
	}

	override clone(): Shape {
		return new Shape().copy(this);
	}

	override copy(source: Shape): this {
		super.copy(source);
		this.#holes = source.holes.map((h) => h.clone());
		return this;
	}
}