Add Vertical and Horizontal perspective sliders to Compose

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The keystone existed in framing but nothing in develop could reach it:
framing is presented by its own Compose panel rather than generated, so
new framing parameters get no control until the panel names them.

Compose now has Vertical and Horizontal sliders under Straighten,
mirrored from the session like the angle, recorded as parameter steps
("Vertical Perspective" in the history), cleared by the Compose reset
and by opening the next photograph. Releasing either slider refits the
crop the way releasing the straighten slider does: a keystone alone
needs no crop, but it moves the empty corners of a straightened frame,
so the crop that avoided them before may not after, or may have room
to grow back.

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This commit is contained in:

dtourolle

2026-09-24 22:13:12 -04:00

parent 5a500118ae

commit 114d979397

7 changed files with 253 additions and 50 deletions

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docs/dev/traceability.md

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