/**
 * Represents a detected plane in the real world, providing its position, rotation, polygon points,
 * and semantic label. The plane data may change over time as the system updates its understanding
 * of the environment. Instances of this class are created and managed by the
 * {@link XrPlaneDetection} system.
 *
 * @category XR
 */
export class XrPlane extends EventHandler {
    /**
     * Fired when an {@link XrPlane} is removed.
     *
     * @event
     * @example
     * plane.once('remove', () => {
     *     // plane is not available anymore
     * });
     */
    static EVENT_REMOVE: string;
    /**
     * Fired when {@link XrPlane} attributes such as: orientation and/or points have been changed.
     * Position and rotation can change at any time without triggering a `change` event.
     *
     * @event
     * @example
     * plane.on('change', () -> {
     *     // plane has been changed
     * });
     */
    static EVENT_CHANGE: string;
    /**
     * Create a new XrPlane instance.
     *
     * @param {XrPlaneDetection} planeDetection - Plane detection system.
     * @param {*} xrPlane - XRPlane that is instantiated by WebXR system.
     * @ignore
     */
    constructor(planeDetection: XrPlaneDetection, xrPlane: any);
    /**
     * @type {number}
     * @private
     */
    private _id;
    /**
     * @type {XrPlaneDetection}
     * @private
     */
    private _planeDetection;
    /**
     * @type {XRPlane}
     * @private
     */
    private _xrPlane;
    /**
     * @type {number}
     * @private
     */
    private _lastChangedTime;
    /**
     * @type {"horizontal"|"vertical"|null}
     * @private
     */
    private _orientation;
    /**
     * @type {Vec3}
     * @private
     */
    private _position;
    /**
     * @type {Quat}
     * @private
     */
    private _rotation;
    /** @ignore */
    destroy(): void;
    /**
     * @param {XRFrame} frame - XRFrame from requestAnimationFrame callback.
     * @ignore
     */
    update(frame: XRFrame): void;
    /**
     * Get the world space position of a plane.
     *
     * @returns {Vec3} The world space position of a plane.
     */
    getPosition(): Vec3;
    /**
     * Get the world space rotation of a plane.
     *
     * @returns {Quat} The world space rotation of a plane.
     */
    getRotation(): Quat;
    /**
     * Unique identifier of a plane.
     *
     * @type {number}
     */
    get id(): number;
    /**
     * Gets the plane's specific orientation. This can be "horizontal" for planes that are parallel
     * to the ground, "vertical" for planes that are perpendicular to the ground, or `null` if the
     * orientation is different or unknown.
     *
     * @type {"horizontal"|"vertical"|null}
     * @example
     * if (plane.orientation === 'horizontal') {
     *     console.log('This plane is horizontal.');
     * } else if (plane.orientation === 'vertical') {
     *     console.log('This plane is vertical.');
     * } else {
     *     console.log('Orientation of this plane is unknown or different.');
     * }
     */
    get orientation(): "horizontal" | "vertical" | null;
    /**
     * Gets the array of points that define the polygon of the plane in its local coordinate space.
     * Each point is represented as a `DOMPointReadOnly` object with `x`, `y`, and `z` properties.
     * These points can be transformed to world coordinates using the plane's position and
     * rotation.
     *
     * @type {DOMPointReadOnly[]}
     * @example
     * // prepare reusable objects
     * const transform = new pc.Mat4();
     * const vecA = new pc.Vec3();
     * const vecB = new pc.Vec3();
     *
     * // update Mat4 to plane position and rotation
     * transform.setTRS(plane.getPosition(), plane.getRotation(), pc.Vec3.ONE);
     *
     * // draw lines between points
     * for (let i = 0; i < plane.points.length; i++) {
     *     vecA.copy(plane.points[i]);
     *     vecB.copy(plane.points[(i + 1) % plane.points.length]);
     *
     *     // transform points to world space
     *     transform.transformPoint(vecA, vecA);
     *     transform.transformPoint(vecB, vecB);
     *
     *     // render line
     *     app.drawLine(vecA, vecB, pc.Color.WHITE);
     * }
     */
    get points(): DOMPointReadOnly[];
    /**
     * Gets the semantic label of the plane provided by the underlying system. The label describes
     * the type of surface the plane represents, such as "floor", "wall", "ceiling", etc. The list
     * of possible labels can be found in the [semantic labels repository](https://github.com/immersive-web/semantic-labels).
     *
     * @type {string}
     * @example
     * if (plane.label === 'floor') {
     *     console.log('This plane represents the floor.');
     * } else if (plane.label === 'wall') {
     *     console.log('This plane represents a wall.');
     * }
     */
    get label(): string;
}
import { EventHandler } from '../../core/event-handler.js';
import { Vec3 } from '../../core/math/vec3.js';
import { Quat } from '../../core/math/quat.js';
import type { XrPlaneDetection } from './xr-plane-detection.js';