This parking garage façade screen modulates light inside of parking structure X (PSX) with a moving field. A field of ellipses is tapered across the façade and responds to both the existing retail space on the ground level as well as the boundaries of the west facing façade. The tapered field of ellipses is extruded at a 30-degree angle to block strong afternoon sun from entering into the garage. Depending on how one passes by façade screen, the angled extrusion facilitates a transition from either being able to see directly into the garage to no view into the garage, or from having no view into the garage to a direct view.