* Magic Eraser and Background Eraser engine commands
paint.magicEraser erases the wand region (tolerance, anti-alias,
contiguous, sample all layers, opacity) to transparency, tile by tile in
parallel; paint.backgroundEraser erases colours similar to the one under
the brush hotspot (continuous / once / background swatch sampling,
discontiguous / contiguous / find-edges limits, tolerance, protect
foreground colour). Both compare and erase in the layer's own channels at
any depth, respect the selection, turn the Background into Layer 0 like
Photoshop, and are one undo step. The Magic Eraser paints the background
colour on layers with locked transparency.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Magic Eraser and Background Eraser tools in the Eraser group
Shift+E / E cycles Eraser, Background Eraser and Magic Eraser; the
toolbar flyout lists all three. Options bars: Magic Eraser tolerance,
anti-alias, contiguous, sample all layers and opacity; Background Eraser
sampling toggles, limits, tolerance and protect foreground colour. The
Background Eraser cursor always shows its sampling hotspot. Icons are
derived from Lucide's eraser (ISC), recorded in ATTRIBUTION.md.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Image Rotation, Canvas Size, Crop, Trim and Image Size move vector geometry
Canvas-wide operations remapped only pixels: type, shape and smart-object
transforms, vector masks, saved/work paths, guides, slices, notes and
Count/Ruler marks stayed put, so they jumped back on the next re-render.
New engine module canvas_geom applies the canvas map to all non-pixel
geometry. 90°/180°/flip turns remap every pixel surface exactly (incl.
type/shape/smart/fill caches and smart filter masks) and move geometry
through the matching affine; guides swap orientation under 90° turns;
rect/ellipse/line live shapes stay live; gradient fill angles follow.
Canvas Size/Crop/Trim translate geometry (shapes re-render for the new
canvas), Image Size scales it and re-renders vectors, Arbitrary rotation
also moves unlinked vector masks and document marks. Layer effect angles
stay (Global Light), as in Photoshop.
Tests compare the CPU composite of a rotated document (type, shapes,
vector mask, smart object) against the rotated flattened original, also
after re-rendering everything from geometry, at 8/16/32-bit RGB, CMYK
and Gray.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Magic Eraser: edit encoded tile bytes in parallel (24 MP: 1260 -> 375 ms)
Tiles are copied out as encoded bytes and only the touched samples are
decoded, so the parallel workers do all the work and the serial write-back
is a memcpy. The ignored bench prints a phase breakdown.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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