A window selects a direction

A top-down geometric model, not a garden plan. Observer at depth 0, window at depth 2, target at depth 10. Change observer and target sideways positions. The line meets the window plane at x = observer + 0.2 × (target − observer).

Observer sideways Target sideways Window half-width

Visibility means only that this one ray crosses an ideal open interval. No plants, rocks, perspective rendering, reflection, property boundaries, or cultural interpretation are simulated.