A switching regulation system and control scheme efficiently enables driving multiple loads from a common energy storage element, such as an inductor. The method of the present invention includes building cross-sectional portions of a three dimensional article, and assembling the individual cross-sectional areas in a layer-wise fashion to form a final article. When the video stream includes only the shape, object non-display information indicates \u201cnon display\u201d. Alternatively or additionally, the joint arrangement includes a swivel joint having a sleeve wherein means for limiting rotation are provided in the form of a stop pin and a stop formed on the sleeve or in a sleeve. The two moving bodies are individually moved to rotate the beam relative to a yaw rotation axis perpendicular to the one axis direction.