path.curvatureEdit, path.removeAnchor, path.convertAnchor,
path.reshapeSegment, path.split, path.setHandle and path.insertAnchor
read subpath as an unsigned integer and fell back to 0 for any other
value. A subpath of 1.5, -1 or "1" edited subpath 0 and the command
reported success. path.split read anchor and segment with as_u64 too
and treated any other value as absent, so a bad anchor beside a good
segment split at the segment.
These commands now refuse a subpath that is not a whole number of 0 or
more with "missing integer `subpath`", the error path.curvatureEdit,
path.removeAnchor, path.convertAnchor and path.reshapeSegment already
give for a bad anchor or segment, and path.split refuses such an anchor
or segment too. Without a subpath, or with null, they edit subpath 0 as
before. The document and the undo history stay as they were after each
error. The params text of the six commands that listed subpath as
required now marks it optional.
Docs: docs/mcp.md, docs/target-app-parity.md.
path.freehand takes redraw: {id, within}: the stroke's ends are placed on the path, anchors added there, and the section between them replaced by the fitted stroke, the shorter way round a closed subpath; a stroke that doesn't end on the path still draws a new one. The Pencil and Paintbrush send it for a stroke that starts on a selected path's outline away from its ends, within Edit Selected Paths' distance.
path.reshapeSegment refused only a delta that was not finite. It moves
a segment's two handles by the delta divided by 3t(1-t), which is
0.1425 at t 0.05 or 0.95, so a finite delta above about 2.5e307 wrote
infinite handles into the path. object.blend.spine.reshapeSegment
refuses a delta of 1e9 pt or longer.
path.reshapeSegment now refuses a delta of 1e9 pt or longer, with its
"invalid delta" error. Two other path commands took a point with no
bound. path.convertAnchor with x, y at 1e308 put the two handles 2e308
apart, so the path's control box was infinitely wide, and path.freehand
through such points with keepSelected off fitted a path whose bounds
reached infinity. Both now refuse a point whose x or y is 1e9 pt or
more in size, with "x and y must be finite", the error
object.blend.spine.moveAnchor gives for the same bound.
Docs: docs/mcp.md, docs/target-app-parity.md.
Shift pressed while dragging a segment had no effect on the curve:
Direct Selection's curved-segment and spine-segment drags, the Anchor
Point tool and the Pen with Alt sent the pointer offset alone, and the
segment bent freely. The reference app keeps the handles in the
perpendicular direction and of equal length while Shift is held.
path.reshapeSegment and object.blend.spine.reshapeSegment take
perpendicular (default false, which keeps today's behavior). With it,
both of the segment's handles stand at right angles to the line between
its anchors, on the same side and at the same length, and the point at
t lies as far from that line as the moved point does. A smooth anchor
at either end stays smooth, as it does in a drag without perpendicular,
and a segment whose anchors coincide bends as it does without
perpendicular. With Direct Selection, Shift pressed once a curved
segment's drag has started sends perpendicular; Shift held at the press
still toggles the path's selection, as before. Direct Selection's
spine-segment drag and the Anchor Point tool's segment drag send Shift
as perpendicular too, so the Pen with Alt does as well. A straight
segment dragged with Direct Selection already moves at 45° steps with
Shift.
Docs: docs/mcp.md, docs/target-app-parity.md.
A Blob Brush stroke merged with every touching closed path of its
color that had no stroke, and the blob it drew or merged into was
always left selected. The Blob Brush Tool Options had Size only.
The Blob Brush Tool Options now have Keep selected and Merge only
with selection, both off by default. A blob that a stroke draws or
merges into is no longer left selected unless Keep selected is on,
and the rest of the selection stays as it was. While Merge only with
selection is on, a stroke merges only with selected blobs, and with
nothing selected it draws a new blob. The options persist like the
tool's Size, and path.blob takes keepSelected and mergeOnlySelection,
both false by default. Keep selected stays on by default for the
Pencil and Paintbrush.
Docs: docs/target-app-parity.md, docs/control-protocol.md.
After Object › Path › Remove Anchor Points the anchor that follows each
removed one is selected: round the end of a closed subpath, or the one
before it at an open subpath's end. Running the command again goes on
along the path, without picking each anchor first. Several anchors,
subpaths and paths each get their own next anchor; a path that goes
leaves nothing selected; one undo step restores the anchors and the
selection.
The Delete key still selects the remainder whole so a second Delete
removes it, and the Delete Anchor Point tool still leaves the path
selected whole.
Fixes#2241
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The Curvature tool built its curve as a uniform Catmull-Rom: both handles of a
smooth point a sixth of the chord between its neighbours, the ends of an open
path without handles. Uneven spacing overshot or looped, a J or U from three
points bent sharply at the middle with straight legs, and the end segments
looked flat.
- `curvature_spline` (draw2.rs) makes each stretch of three points follow the
circle through them: a smooth point's tangent is that circle's
(`smooth_handles`), each handle `chord / (3 cos²(α/2))` long, α between
handle and chord capped at 90° (`arc_handle`). The ends of an open path
mirror their neighbour's tangent in their chord (`end_handle`). A turn
tighter than 30° (`TIGHT_TURN`) shortens its handles, so a narrow V comes to
a point. Degenerate points become corners. `path.curvature` and the rubber
band use it.
- `catmull_rom` is unchanged for the Pencil and Paintbrush fitting.
- `bend_last` (from: smooth), `curvature_move` on a smooth point, the point
`curvature_insert` adds on a straight segment, and `path.convertAnchor` to
smooth without x/y (`curvature_smooth`) use the same rule.
- `curvature_extend` gives the new end its end handle unless Alt-clicked
(`corner` param on `path.curvatureEdit`).
- Neighbours of a point dragged on an existing path keep their tangents (a
Pen-drawn shape isn't reshaped); the path being drawn re-curves throughout.
A Pencil or Paintbrush stroke always left the path it drew or continued
selected. The reference app's Pencil and Paintbrush options have Keep
selected for this, and VectorCraft's Tool Options had no such row.
The Pencil and Paintbrush Tool Options now have a Keep selected
checkbox, on by default, which keeps today's behavior. When it is off,
a new path is not selected and the selection stays as it was, and a
continued path is removed from the selection while the rest stays. The
stroke is still one undo step. The option persists like the tools'
other options, and path.freehand and brush.freehand take keepSelected.
Docs: docs/target-app-parity.md, docs/ui-parity.md, docs/control-protocol.md.
The Pencil gave every path a black stroke when the stroke was None. With Fill
new pencil strokes on and a fill set, the path now keeps no stroke; only a path
that would show nothing (no fill, no stroke) still gets black.
A drag near an anchor refitted the whole segments on either side of it, so a
short drag over a small bump on a long side turned the side into a curve from
end to end. The segments leading into the anchors under the drag are now split
where they enter the tool's reach, and only what is in reach is refitted.
Offset Path, Outline Stroke, the Pathfinder panel, Clean Up, Make
Blend, Rasterize and the other commands that #1429's table marks 3,
except Split Into Grid, added, removed or replaced their objects one at
a time, and so did Remove Anchor Points, Redefine Symbol and the
removal of Shaper groups whose source art is gone. Each insertion or
removal moved the later objects of the layer or group. The lookups by
id that followed walked the tree, and every fourth walk rebuilt the
lookup cache. On 25,000 rectangles a release build of vectorcraft-cli
took 29.1 s for Offset Path.
These commands now make their edits with Document::wrap,
Document::insert_beside and Document::remove_many, in one pass over the
children of each layer or group, and Outline Stroke and Expand write
each new object into the place of the object it replaces. A list that
holds an object twice, or an object and another inside it, and that was
edited without an error before, is still edited one object at a time.
The documents, selections and undo steps are the same. On the same
rectangles Offset Path now takes 1.3 s.
Docs: docs/target-app-parity.md.
The Anchor Point tool drags any segment of a selected blend's spine into
a curve, straight ones too, and Direct Selection reshapes a curved spine
segment as it does a path's (a straight one it leaves, as on paths). Both
run the new `object.blend.spine.reshapeSegment`, which bends the segment
with the same math as `path.reshapeSegment`, now shared as
`SubPath::bend_segment`.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Double-clicking a brush in the Brushes panel (or the panel menu's Brush
Options…) opens its options. Calligraphic Brush Options: Angle,
Roundness and Size, each Fixed, Random or Pressure with its Variation,
over live previews of the nib and of a stroke. Bristle Brush Options:
Shape and the bristle sliders. OK runs brush.options; strokes painted
with the brush update.
The Paintbrush records the pen pressure along a stroke (path.freehand
takes [x, y, pressure] points), and a Calligraphic brush with Pressure
variation changes its nib along the stroke, from the value less the
variation at the lightest pressure to the value plus it at the heaviest.
Brushes saved before keep their Random variation. Pen pressure doesn't
reach the app on macOS yet (winit 0.30 reports none there).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The Curvature tool only edited the path it was drawing. It now edits any
selected path, whatever drew it, keeping its shape except where edited:
a click on a point makes it the current (direct-selected) point and a
drag moves it, re-curving only its two segments (the neighbours keep
their handle directions); Alt-click or double-click toggles it smooth or
corner and Delete removes it; a click on a segment adds a smooth point
without changing the shape, and a drag moves it in the same undo step.
With an end of an open path current, clicks go on from it (the old
segments keep their shape) and a click on the other end closes it.
The edits go through a new path.curvatureEdit command (move, insert,
extend, close), path.convertAnchor and path.removeAnchor, one undo step
each. The tool now claims Delete/Backspace while it has a point to
remove, so the key no longer deletes the whole path.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Reported: with the Pen there was no way to edit curves in place as Ctrl does in Illustrator on
Windows (Cmd on the Mac), segments couldn't be grabbed, and the curve-editing tools felt slow and
sometimes didn't take a handle.
- Cmd/Ctrl held at a press with any tool but a selection tool now borrows the selection tool in the
engine (Session::pointer), not in the canvas: the selection tool chosen last, or Direct Selection
for the Pen, Curvature and anchor tools until one is chosen. The tool lent to isn't deactivated,
so the Pen goes on drawing its path after the release while that path stays selected; it no
longer draws on another open path selected meanwhile. Agents reach it with pointer_gesture
mods.cmd. With Cmd held the pointer is the borrowed tool's. Choosing a tool or switching
documents mid-gesture gives the tool back first.
- Pen + Alt over a segment of a selected path reshapes it, as the Anchor Point tool does.
- The handles shown are the handles that drag (one helper for Direct Selection, the Anchor Point
tool and Pen + Alt): Direct Selection now drags the handles of a path selected as a whole (as
the Pen leaves it, so Cmd + drag of a handle while drawing works), the Anchor Point tool no
longer grabs handles that Show handles when multiple anchors are selected hides, the nearest
handle wins, and a handle shorter than the tolerance leaves its anchor to be picked. The anchor
tools pick within Selection & Anchor Display > Tolerance instead of a fixed 4 px.
- path.reshapeSegment keeps a smooth anchor at either end smooth (its other handle turns with the
moved one) instead of kinking it.
- A dragged handle gathered its smart guide targets from the whole document on every pointer move
(21 ms per move on 20,000 paths): HandleSnap now gathers them once per drag (1 ms).
vectorcraft-cli perf measures handle and segment drags on a 5,000-anchor path.
- catalog::is_selection_tool and catalog::edits_anchors replace the UI's own lists.
- Tests in tools, engine and MCP (headless pointer_gesture); docs/mcp.md, control-protocol.md,
ROADMAP.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Discord feedback: Alt with the Pen didn't move a direction handle on its own, and there was no
way to break a path at an anchor and pull the ends apart.
- Pen: Alt held over a handle end or an anchor of a selected path (the one being drawn too) hands
the gesture to the Anchor Point tool, with the convert cursor: dragging a handle moves it alone,
clicking a smooth anchor makes it a corner, dragging an anchor pulls out symmetric handles.
Drawing goes on afterwards. Handles hidden by a partial anchor selection aren't grabbed.
- path.cutAtAnchors cuts at the direct-selected anchors in one undo step: a closed path opens
there, an open one becomes one path per piece, and one anchor of each cut stays selected so a
drag pulls the path apart. It answers {ids} and refuses (no undo step) when only open ends are
selected. path.convertAnchors checks `to`, skips stale anchor refs instead of indexing past
them, and keeps a smooth anchor's handles when converting to smooth.
- SubPath::cut_at and SubPath::smooth_anchor (geom) now back path.split, path.cutAtAnchors,
path.convertAnchor and path.convertAnchors, replacing three copies of that logic.
- Control bar and Properties panel: "Convert:" corner/smooth and "Anchors:" remove, connect
(Join), cut buttons when anchors are selected; Cut Path on the task bar and the context menu.
New original icon dc-anchor-smooth.svg (ASSETS.md row).
- ja, zh-hans, zh-hant and es strings (cs for the context menu item), es @msg rows; docs/mcp.md
section; ROADMAP.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Parity: Object › Path › Remove Anchor Points now runs the new command (`path.removeAnchors`,
the menu's feature name) instead of `path.deleteAnchors`, which deleted the anchors with their
segments and opened closed paths; that stays the Delete key's command ("Delete Anchor Points",
off the menu). No second "Smart" item.
- Geometry: the refit moves to `vectorcraft_pathops::remove_anchor` on the existing least-squares
fitter (fixed end tangents, a golden-section search for where the curve passes the removed
point) instead of a ~1,000-candidate grid search in geom (about 4 ms per anchor, now well under
0.1 ms). Two straight sides stay one straight side (a rectangle loses a corner and becomes a
triangle), as Illustrator does; non-finite input leaves the handles alone.
- The Delete Anchor Point tool (`path.removeAnchor`) uses the same function, replacing its
heuristic handle stretch; the explicit id/anchor and `fit` params of the new command are dropped
as duplicates of it. The command is enabled by direct-selected anchors (`has_anchors`), not a
UI override.
- The Control bar shows an icon button (the Delete Anchor Point icon, tooltip "Remove Anchor
Points") instead of a 204 pt text button; the labels reuse the translated "Remove Anchor
Points"; zh-hant gains "Delete Anchor Points". The Pen test that pinned Alt-click as plain Pen
(Illustrator's Alt over an anchor is Convert Anchor Point) is dropped.
- Tests for the refit, closed paths, straight sides and bad input; docs/mcp.md and ROADMAP.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
path.smartRemoveAnchor stays. Object › Path, the Control bar, the contextual task bar, Properties, and the canvas context menu run it on direct-selected anchors. The Pen no longer uses Alt/Option for this, so that key stays free for Convert Anchor Point.
The issue asked for one-step symmetric shapes, splitting all selected art
along a line and cropping art to a rectangle as real geometry. Only the
freehand Knife and the Scissors existed, and neither works on compound
paths as one shape.
New commands path.mirrorCut, path.lineCut and path.rectCut cut the
selected paths and compound paths (inside groups too) with pathops
booleans against a half-plane or rectangle, and split open paths with
the Knife/Path Eraser helpers. Mirror & Cut reflects the kept half and
unites it with itself (open halves are joined on the axis). The draw2
piece helpers now rebuild compound paths too. Three tools (Eraser group,
original icons) preview the cut live while dragging and commit it as one
undo step; Mirror & Cut's axis and kept side are tool options shown in
the Control bar.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Shipped code no longer unwraps, expects or panics: every one of the 124
unwrap()/expect()/panic!/unreachable! sites outside tests now handles the
failure (Result/Option, ?, let-else, defaults) and reports errors to the user.
- Lints: workspace clippy denies unwrap_used, expect_used, panic, todo,
unimplemented and unreachable; clippy.toml allows them in tests, and
integration tests, examples and testkit opt out explicitly.
- Safety net (vectorcraft_engine::guard): a panic in a top-level command rolls
the document back and returns EngineError::Internal; a panicking tool is
reset; the MCP server answers with an internal error and keeps serving; the
UI frame and each control request are guarded.
- APIs that hid failures now return them: Rendered::to_png/to_jpeg/to_webp
return Result (JPEG/WebP errors used to write empty files),
FontDb::face returns Option, Region::top returns Option.
- Fuzzing: engine/tests/import_fuzz.rs feeds garbage, hostile and mutated SVG
and PDF through import → render → export (30k cases locally, no panics).
- Docs: AGENTS.md/CLAUDE.md rule, docs/development.md "Robustness" section,
README pointer and a PR template checklist.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
With nothing selected, Stroke panel edits (stroke.set / stroke.setAdvanced: cap, join, dashes,
arrowheads, profile...) and a graphic style clicked in the Graphic Styles panel
(graphicStyle.apply, add too) set up the next object drawn: its stroke options, fills, strokes,
effects, opacity and blend mode, linked to the style. The Appearance panel's New Art Has Basic
Appearance (appearance.setNewArtBasic, preference newArtBasic, on by default) now works: off,
new art takes the whole appearance of the last selection. paint.default resets the template,
appearance.newArt reports it, and with nothing selected the Stroke panel shows its stroke and
the Appearance panel its rows. PaintDefaults gains the template appearance, opacity, blend
mode and style.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
dotCooCoo