function clamp ( value, min, max ) {

	return Math.max( min, Math.min( max, value ) );

}
function Spherical( radius = 1, phi = 0, theta = 0 ) {

	this.radius = radius
	this.phi = phi
	this.theta = theta


}

Object.assign( Spherical.prototype, {

	set: function ( radius, phi, theta ) {

		this.radius = radius;
		this.phi = phi;
		this.theta = theta;

		return this;

	},

	clone: function () {

		return new this.constructor().copy( this );

	},

	copy: function ( other ) {

		this.radius = other.radius;
		this.phi = other.phi;
		this.theta = other.theta;

		return this;

	},

	// restrict phi to be betwee EPS and PI-EPS
	makeSafe: function () {

		var EPS = 0.000001;
		this.phi = Math.max( EPS, Math.min( Math.PI - EPS, this.phi ) );

		return this;

	},

	setFromVector3: function ( v ) {

		return this.setFromCartesianCoords( v.x, v.y, v.z );

	},

	setFromCartesianCoords: function ( x, y, z ) {

		this.radius = Math.sqrt( x * x + y * y + z * z );

		if ( this.radius === 0 ) {

			this.theta = 0;
			this.phi = 0;

		} else {

			this.theta = Math.atan2( x, z );
			this.phi = Math.acos( clamp( y / this.radius, - 1, 1 ) );

		}

		return this;

	}

} );
export default Spherical