import { Group } from './Group.js';

/**
 * In earlier three.js versions, clipping was defined globally
 * on the renderer or on material level. This special version of
 * `THREE.Group` allows to encode the clipping state into the scene
 * graph. Meaning if you create an instance of this group, all
 * descendant 3D objects will be affected by the respective clipping
 * planes.
 *
 * Note: `ClippingGroup` can only be used with `WebGPURenderer`.
 *
 * @augments Group
 */
class ClippingGroup extends Group {

	/**
	 * Constructs a new clipping group.
	 */
	constructor() {

		super();

		/**
		 * This flag can be used for type testing.
		 *
		 * @type {boolean}
		 * @readonly
		 * @default true
		 */
		this.isClippingGroup = true;

		/**
		 * An array with clipping planes.
		 *
		 * @type {Array<Plane>}
		 */
		this.clippingPlanes = [];

		/**
		 * Whether clipping should be enabled or not.
		 *
		 * @type {boolean}
		 * @default true
		 */
		this.enabled = true;

		/**
		 * Whether the intersection of the clipping planes is used to clip objects, rather than their union.
		 *
		 * @type {boolean}
		 * @default false
		 */
		this.clipIntersection = false;

		/**
		 * Whether shadows should be clipped or not.
		 *
		 * @type {boolean}
		 * @default false
		 */
		this.clipShadows = false;

	}

}

export { ClippingGroup };