Module live 

In-memory point-keyed display updates (no files).

• KeyedDiff: diffs the whole composed display cloud (unique point keys + owner zone per point) against what the viewer shows and yields a DisplayDelta (adds / moves / removes with dense u32 slot ids). This is the exact logic behind the file stream of crate::blocks::DiffStream.
• DisplayMirror: the viewer side, applies deltas to a slot table (reference implementation for clients and tests).
• DisplayFeed: event driven end to end (zone results -> crate::post::LiveDisplay composition -> KeyedDiff); it is what NodeBuilder::display_deltas and crate::pipeline::Pipeline::derive use to emit Event::DisplayDelta.

Semantics of a delta: a key that stays keeps its id (a move when its position changed by more than POSITION_EPS or its colour changed); a key that leaves frees its id; a new key takes the lowest free id or capacity++; an id freed in a delta is not handed out in the same delta; a zone change is a remove plus an add with a new id. Apply a delta in this order: removes, adds, moves.

Structs

DisplayDelta

Changes between two consecutive display clouds.

DisplayFeed

Event-driven display feed: collects the zone results of the session events, composes the display (LiveDisplay: key-hash thinning, sticky voxel ownership, zone composition) and diffs it (KeyedDiff).

DisplayFrame

Coordinate frame of the display clouds.

DisplayMirror

Viewer-side slot table: applies DisplayDeltas the way a GPU-buffer viewer does (writes at index = id).

KeyHasher

Cheap hasher for the already well-mixed 64-bit pixel keys.

KeyedDiff

Diff state of a point-keyed display: key -> slot id, free ids, capacity.

MirrorPoint

One slot of a DisplayMirror.

PendingDelta

A prepared (not yet committed) delta of KeyedDiff::prepare. Commit it with KeyedDiff::commit or give it back with KeyedDiff::abort (e.g. when writing it somewhere failed).

PointAdd

A point that appears: it takes slot id.

PointMove

A shown point whose position or colour changed (same slot id, new values).

Enums

DeltaKind

Why a Event::DisplayDelta was emitted.

Constants

POSITION_EPS

A point whose position moved by more than this (display units, any axis) is sent as a move.