import { BoundingBox } from './bounding-box';
import { Point3 } from './point3';
/**
 * A bounding sphere.
 *
 * A bounding sphere may be empty. An empty sphere contains no points.
 * A non-empty sphere contains at least one point. Some attributes,
 * such as the sphere center and radius, are defined only for spheres
 * that are not empty.
 *
 * A bouding sphere may be infinite. An infinite sphere contains all points.
 */
export declare class BoundingSphere {
    private _x;
    private _y;
    private _z;
    private _r;
    /**
     * Constructs an empty sphere.
     */
    static AsEmpty(): BoundingSphere;
    /**
     * Constructs an infinite sphere.
     */
    static AsInfinite(): BoundingSphere;
    /**
     * Constructs a new bounding sphere from a provided center and radius.
     * @param c the center point.
     * @param r the radius.
     */
    static FromParameters(c: Point3, r: number): BoundingSphere;
    /**
     * Constructs a new bounding sphere from a bounding box.
     * @param bbox the bounding box.
     */
    static FromBoundingBox(bbox: BoundingBox): BoundingSphere;
    /**
     * Constructs a new bounding sphere.
     * @param x the center x-coordinate.
     * @param y the center y-coordinate.
     * @param z the center z-coordinate.
     * @param r the radius.
     */
    constructor(x: number, y: number, z: number, r: number);
    /**
     * Gets the center of this bounding sphere.
     */
    get center(): Point3;
    /**
     * Gets the radius fo this bounding sphere.
     */
    get radius(): number;
    /**
     * Determines whether this sphere is infinite or not.
     */
    get isInfinite(): boolean;
    /**
     * Determines whether this sphere is empty or not.
     */
    get isEmpty(): boolean;
    /**
     * Expands this bounding sphere to fit the provided feature.
     * @param b the feature by which to expand this sphere.
     */
    expandBy(b: BoundingBox | BoundingSphere | Point3 | Point3[] | number[]): void;
    /**
     * Expands the radius of this bounding sphere by a specified feature.
     * @param b the feature by which to expand this sphere's radius.
     */
    expandRadiusBy(b: BoundingSphere | BoundingBox | Point3): void;
    /**
     * Sets this sphere to an empty sphere.
     * @returns a reference to this sphere.
     */
    setEmpty(): this;
    /**
     * Sets this sphere to an infinite sphere.
     * @returns a reference to this sphere.
     */
    setInfinite(): this;
    /**
     * Expands this sphere to include the specified bounding sphere.
     * <p>
     * Changes only the radius, if necessary, not the center of the sphere.
     * @param bs the bounding sphere.
     */
    expandRadiusByBoundingSphere(bs: BoundingSphere): void;
    /**
     * Expands this sphere to include the specified point.
     * <p>
     * Expands only the radius, if necessary, not the center of this sphere.
     * @param p the point.
     */
    expandRadiusByPoint(p: Point3): void;
    /**
     * Expands this sphere to include the specified bounding box.
     * <p>
     * Changes only the radius, if necessary, not the center of this sphere.
     * @param bbox the bounding box.
     */
    expandRadiusByBoundingBox(bbox: BoundingBox): void;
    /**
     * Expands this sphere to include the specified bounding sphere.
     * <p>
     * Adjusts the sphere center to minimize any increase in radius.
     * @param bs
     */
    expandByBoundingSphere(bs: BoundingSphere): void;
    /**
     * Expands this bounding sphere to include a specified coordinate.
     * <p>
     * Adjusts the sphere center to minimize any increase in radius.
     * @param p the point.
     */
    expandByPoint(p: Point3): void;
    /**
     * Expands this sphere to include the specified bounding box.
     * <p>
     * Adjusts the sphere center to minimize any increase in radius.
     * @param bbox the bounding box.
     */
    expandByBoundingBox(bbox: BoundingBox): void;
    /**
     * Determines whether this sphere contains the specified point.
     * @param p the point.
     * @returns true, if this sphere contains the point; false, otherwise.
     */
    contains(p: Point3): boolean;
}