import type { Color } from "../math/Color.ts";
import type { Fog } from "../scenes/Fog.ts";
import { Node } from "./Node.ts";

/** Root node of a scene graph, holds background and fog. */
export class Scene extends Node {
	override type = "Scene";

	/**
	 * When true, the renderer calls updateMatrixWorld() on the scene
	 * before traversal -- matching THREE.js behaviour.
	 */
	autoUpdate = true;

	/** Scene-level fog. Set to a Fog instance or undefined. */
	fog: Fog | undefined = undefined;

	/**
	 * Background color painted before any geometry. Accepts a Color instance,
	 * a hex number (e.g. 0xff0000), or undefined (falls back to setClearColor).
	 */
	background: Color | number | undefined = undefined;

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