Metallic liner drifts along an infinity path. Every frame stacks a fading time-trace — long exposure. When one motion cycle ends, the solid has also finished a full vertical + horizontal drift of its own position.
Stage 1 only: motion stack + metallic liner. Reflection and shadow/inner lights come later. Capture HUD is indication — engine can drive a real high-speed capture / holo path; this page is canvas sim, no webcam required.