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perfect target area thing

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Your Name 2026-10-03 00:39:07 -04:00
parent 664252e0fc
commit 5bcf22e458
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docs/lane-handoff.md
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@ -94,12 +94,9 @@ decision, not a cleanup.
existing root instance all produce the same child instance shape. The only
difference is playback policy: a new empty drawing holds source frame zero;
a dropped library symbol plays at speed one.
- **Every symbol is born with a lane,** `clip/lane-node`, id `:lane`. A symbol
with none had nowhere to drop a thing, which made the first drop into any
symbol a special case. An unaimed drop fills an EMPTY lane that is already
there and otherwise makes a new one; it never takes an occupied lane nobody
pointed at, because placement claims time and would trim or delete what was
in it.
- **Lanes are explicit.** A symbol may contain ordinary overlapping children
without a lane. Selecting a lane row opts creation into its claim-time
behavior; selecting a cel enters that cel's source symbol instead.
- **Placement claims time.** Lanes never store overlaps. A new or extended clip
trims, removes, or splits whatever previously owned the claimed interval.
Real compositing overlap uses another lane, where ordering remains explicit.
@ -122,12 +119,12 @@ that is mostly refused today.
## Current timeline interaction
- Creating a symbol inside an aimed lane creates a one-frame held clip at the
playhead. With no aimed lane it first creates a lane. Drawing a polygon uses
the existing clip there or creates the same one-frame clip when the frame is
empty.
- Dropping any library symbol into a lane creates a natural-duration playing
clip. Dropping it on unclaimed timeline or stage space first creates a lane.
- Creation follows the primary active row and the playhead; the complete rule is
in `docs/creating-in.md`. A lane row creates a new cel and claims its interval,
while selecting a cel creates inside the symbol that cel places.
- Drawing with a lane row active creates a new one-frame drawing cel. Dropping a
library symbol there creates a natural-duration playing cel. Explicit timeline
drops use the row and frame under the pointer.
- Dragging a clip body moves it. A linked audio node follows a picture move;
moving or trimming the audio itself remains independent.
- Dragging a right edge changes its endpoint. Growth consumes adjacent spans