setFromCylindricalCoords( radius, theta, y ) {

		this.x = radius * Math.sin( theta );
		this.y = y;
		this.z = radius * Math.cos( theta );

		return this;

	}
Sets the vector components from the given cylindrical coordinates.

@param {number} radius - The radius.
@param {number} theta - The theta angle in radians.
@param {number} y - The y value.
@return {Vector3} A reference to this vector.