See the angle.
Not just the replay.

Explore modeled sightline obstructions and compare alternative positions.

Synthetic plays · Lead / Trail / Slot · Simplified bodies · Geometry, not gaze

Low-block battle between A5 and B5 while A3 cuts across the lane. Scrub the timeline to see how each official's modeled view of the post contact changes as the cutter passes.

Top-down · world x / z (m)

Some sampled paths obstructedPaths

━ path, no modeled obstruction━ ┅ path stopped at blocker◆ selected official (drag)■ team A ■ team BBodies are simplified geometric proxies.

17.10 / 20.00 s

Ticks = annotation keyframes (not video frames)

Speed

Modeled eye-level view · Camera aimed at target

○ clear sample · ✕ obstructed sample

Original position

Three-person mechanics

t = 17.10 s

Low-post battle while an off-ball cutter crosses the lane.

Every modeled position has at least one obstructed sample path at this instant. Scrub the timeline to see how this changes.

Coverage context

Lead: baseline, close to the low block.
Slot: across the floor, at the free-throw line extended.
Trail: top, behind the play.

How does each position's modeled view of the post contact change as the cutter passes?

Synthetic play, invented positions. Geometry only — not where anyone looked, whether a foul occurred, or whether a call was correct.

Selected official

t = 17.10 s

Original modeled position: Some sampled paths obstructed
3 of 5 sampled paths obstructed · blocker: A3
Alternative position: Drag the orange S marker, or focus it and use arrow keys (Shift = 0.5 m). Playback pauses; the original is kept.

Original marker

Other actors are held at their recorded or synthetic positions. This comparison does not predict how play would change.

Target & model

defaults are assumptions

Post contact A5/B5 · 0.30 × 0.30 m region · 5 fixed samples

S eye height1.72 mTarget height1.20 mTorso width (all players)0.46 m

Assumption sensitivity

A small change to position or eye height alters the geometric classification at this instant. Treat the result as sensitive to these assumptions.

= Official x +0.25 m: Some sampled paths obstructed
≠ Official x −0.25 m: All sampled paths obstructed
= Official z +0.25 m: Some sampled paths obstructed
≠ Official z −0.25 m: All sampled paths obstructed
= Eye height +0.10 m: Some sampled paths obstructed
= Eye height −0.10 m: Some sampled paths obstructed

Annotation mode

Reference video · coming later — use Sessions to analyze a recording

Keys: Space play/pause · , / . step 0.1 s · 1–3 select official · arrows move focused official

See the angle.Not just the replay.

Selected official

Target & model

Assumption sensitivity

Annotation mode

See the angle.
Not just the replay.