Cause: render::content_bounds (used by snapping's targets and source, Align,
Distribute, the viewer's bounding box and handles) took shape layers' bounds
from draw_bounds, the rasteriser's safety rectangle: 1 px of anti-aliasing
padding around fills and width x miter limit / 2 + 1 around strokes. Two
squares snapped edge to edge therefore stayed 2 px apart, or much more with
strokes.
Fix: shapes::content_bounds uses visual bounds, as After Effects' layer bounds
do: the path bounds plus half the stroke width (through the draw's group
scale), with no anti-aliasing or miter padding. Rendering keeps draw_bounds.
Tests: render shape_content_bounds_are_the_visual_edges (a 100 x 100
rectangle is exactly +-50, +-55 with a 10 px stroke); engine
shape_layers_align_by_their_visual_edges (widths 100 / 110, Align Left puts
both edges exactly at 0).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QiAJeFttZp83Fh7YuzAR5f
(cherry picked from commit bfd0abd7437ad1d38652e3aef51f9ba5dea9100b)
The arrow keys did nothing to a selected layer, so it couldn't be lined
up precisely. As in After Effects, over the Composition panel or the
Timeline an arrow key moves the selected layers 1 pixel at the viewer's
magnification (half a comp pixel at 200 %, so sub-pixel steps come from
zooming in) and Shift+arrow 10, one undo step per press; holding the
key repeats. Not while typing or with mask points selected.
The move is the new engine command layer.nudge {x, y (comp pixels),
layers?}: through each layer's parents into Position (or X/Y Position),
a key at the current time when Position is animated, locked layers left
alone. It shares the Align panel's move.
Tests: nudge_moves_layers_by_comp_pixels (engine),
arrow_keys_nudge_the_selected_layer_at_the_viewer_magnification
(ui_viewer).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Preview panel: five shortcuts (Spacebar, Shift+Spacebar, Numpad 0, Shift+Numpad 0,
Alt+Numpad 0) each with saved options (include video/audio/overlays/layer controls, loop,
cache before playback, range incl. play around current time, play from, frame rate, skip,
resolution, full screen, play cached frames, move time to preview time), persisted in
prefs; playback.settings.get/set; the playback loop follows the preview plan.
Align panel: layer.align {edge, to} and layer.distribute {mode} engine commands (bounds
through transform and parents, one undo step); Align Layers to dropdown and Distribute row.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude