Dragging direct-selected anchors never snapped: the anchor drag sent the raw
pointer delta. Now the anchor pressed on (or the pointer on a straight segment)
snaps and the other selected anchors follow by the same delta:
- Smart Guides: onto other anchors (including the anchors of its own path that
stay put), onto path segments ("path", new segment targets gathered only for
anchor drags, lines exactly on straight segments), else into line with
anchors, edges, centres and artboards ("align"). The anchors that move, their
segments and the reshaped paths' bounds are no targets, so an anchor can't
snap to itself. Targets are gathered once when the drag begins, capped.
- Smart Guides off: Snap to Point pulls it onto anchors and ruler guides within
its distance; Snap to Grid / Snap to Pixel apply as for drawn points.
- Shift keeps the 45-degree constraint unsnapped.
Group Selection and Direct Selection's whole-object moves now snap like the
Selection tool: its move snapping moved into a shared `MoveSnap`, and
`snap_with` into a reusable `PointSnap` that caches its targets per drag.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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