Beam Player — Keys

• Scenes: 1,2,3,4
• Arrays: Q (Corners), W (Bottom Fan), E (Sides Cross), R (Centers), T (Top Sweep)
• SHIFT: latch array on/off • hold key = momentary
• SPACE: tap tempo • CTRL: double-time • ALT: color shift
• ?: toggle this help

What you see is the wall: hard-edged shapes on true black. In haze, those shapes become volumetric beams (circle→tube, square→box beam, line→flat beam).