The characters' stroke takes Align Stroke like an object stroke: CharStyle
keeps stroke_align (written only when not centred), stroke.set and
text.setRangeStyle strokeOptions apply align to type, and the Stroke panel
enables the buttons for type. Canvas, PDF and EPS draw it around the glyphs
through stroke_layer(); SVG keeps the text live and writes the aligned
stroke on the glyph outlines, clipped or masked. Type's visual bounds grow
with its character strokes.
Symbol instances are placed through a transform as images are, so the
Transform effect now moves and copies both (transform_placed), sharing one
copy budget (MAX_COPY_OBJECTS). Copies of either stop before one reaches
past MAX_REACH, as a path's do (distort::within_reach).
Adds end-to-end export tests for a group's image copies in svg and pdf.
An Intertwine group keeps its objects as they are, in their own stacking
order; each member can be drawn over the others in an area of its own.
The group draws, hits, saves and exports through its live expansion, so the
members stay editable and Release gives them back unchanged.
object.intertwine.arrange picks an overlap area by a click point or by a
closed path drawn around overlaps and toggles which member is on top
there, or brings a member to the front or sends it to the back where three
or more objects overlap.
The default `text` features of vello_cpu (glyph runs, through glifo) and
usvg (fontdb, harfrust 0.12, skrifa 0.44 and its read-fonts 0.41) build
another copy of the font stack into the engine, next to the workspace's
skrifa 0.47 and harfrust 0.13. Neither is used: the renderer draws the
glyph outlines vectorcraft-text gives it, and SVG import reads <text>
from the XML itself and never gives usvg a font (usvg leaves out text it
has no font for).
- vello_cpu: its default features but `text` (std, png, u8_pipeline),
plus f32_pipeline as before.
- usvg: `svgz` only, for gzipped SVG images inside an SVG; `text`,
`system-fonts`, `memmap-fonts` and `writer` are off. text_layout.rs uses
usvg as a reference viewer with a font, so crates/svg turns `text` on as
a dev-dependency feature, as crates/pdf does for krilla's `simple-text`.
- A test pins `svgz`: SVGZ images, linked or as a data URL, import as
vector art.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The reference app's Drop Shadow has a Color and a Darkness, the
percentage of black added to the object's own colors. Drop Shadow had
only a Color, so every shadow was one color. Choosing one or the other,
and the defaults, are VectorCraft's own.
Drop Shadow now takes `shade` ("color" or "darkness", default "color")
and `darkness` (%, default 100). Its dialog and the Appearance panel's
inline editor show Color and Darkness as radio buttons. With Darkness
d, a CMYK document keeps the object's cyan, magenta and yellow and
raises its black from K to K + d × (1 − K), and an RGB document
multiplies each channel by 1 − d, so in RGB 0% gives the object's
color and 100% gives black. A shadow saved without these keys draws as
before. SVG export writes a Darkness shadow with feComponentTransfer
and SVG import reads it back; CSS export leaves it out.
Docs: docs/target-app-parity.md.
Use automatic vector smooth shading without a separate control.
Enable Cap by default and keep continuous rim curves and bounded seam joins.
Integrate the shared dialog with the other three 3D effects.
`cargo xtask wasm` (part of `cargo xtask ci`) checked the wasm-safe crates but not
apps/vectorcraft-web, so web-only code was never compiled before a merge. It now runs
`cargo check --target wasm32-unknown-unknown -p vectorcraft-web` too (no Trunk, no network).
The SVG importer's cap on the web was 48, sized from native measurements. rustc links the web
build with a 1 MiB stack (`-z stack-size=1048576`; the app passes no linker arguments of its
own) and usvg uses about 15 kB a level: half the stack at that cost gives 34, set in one place
with the arithmetic.
A scatter brush whose art is an instance of a symbol stroked with that brush, or any brush whose
art is painted with a pattern whose tile is stroked with it, drew itself without end: a stack
overflow in a hand-written native file. Brush pieces already strip the brushes of their own
strokes; now what they draw by name that would draw a brushed stroke (a symbol instance, or a
pattern paint, also through the symbols and patterns those use) is left out too, in one place
(`stroke_pieces`, which every renderer and exporter calls with the document).
Probed the rest of item 2 of the depth follow-up with hand-written hostile inputs, kept as tests:
graph designs of deep art and of a symbol holding itself, Affinity groups nested to and past
both of its reader's caps, DXF blocks inserting themselves, EMF/WMF saving states without end,
and plug-in manifests and output nested 30,000 to 100,000 deep. None of them overflowed.
usvg's style sheets (simplecss) drop rules whose selector has a :not(), so
rect:not(.keep) { fill: green } left the rect as it was. The text pass's own
cascade now reads :not() of a list of compound selectors (counted as its most
specific argument), and the import pre-pass writes what such rules set on an
element into its style attribute, with the value that wins the cascade there,
so usvg reads what CSS would: against other rules, the style attribute and
!important, inherited from groups, display: none and CSS transforms included.
Selector lists are split at top-level commas only.
Every symbol instance was measured as its transform applied to the
20 × 20 square around the origin, which symbols made in the app keep
their art in. The SVG and DXF importers keep symbol art as drawn, so
the box of an instance of an imported symbol did not match its art.
The SVG Star instance at x 20, y 30 draws from (20, 30) to (40, 50)
and was measured from (10, 20) to (30, 40). Align moved such an
instance by the wrong amount, clicks and marquees beside its art
selected it, and the canvas, exports and prints left it out when its
art reached the view or the page and the square did not.
An instance is now measured by its symbol's art, which
Document::symbol_boxes looks up in the document each time
(Node::geometric_bounds_with, visual_bounds_with and
reach_bounds_with). With Use Preview Bounds on, the strokes in the art
count at their own weight, as the canvas draws them, and
object.setBounds counts them at that weight when it sizes an instance
or an object that holds one. When strokes do not scale and a width or
height of 0 or more is smaller than what a path's stroke adds,
object.setBounds now gives the path no width or height, as it does
for an instance whose art has strokes; before, it mirrored the path.
With Use Preview Bounds on, object.setBounds now measures the margins
that strokes add object by object, the members of groups and the
objects in symbol instances' art included, and solves for the width,
height and reference point asked for when the width and height are 0
or more. Before, it measured the margins of the whole selection and
could miss the size or the reference point asked for when strokes did
not scale and the objects' strokes added different margins, and when
strokes scaled and the width and height were out of proportion, even
for one path. A clip group, a Shaper Group, a compound path, type, and
a group or instance with effects or an opacity mask of its own are each
measured as one object, and so is an instance in perspective or one
turned or slanted relative to the bounding box, other than by quarter
turns. When the selection holds more than 4,096 objects to measure this
way, each selected object is measured as one. Instances inside symbol
art are measured by their own symbol's art. An instance is measured as
the square when its symbol is missing, when its symbol or a symbol
nested in its art holds an instance of itself, and when symbols nest 32
deep in its art.
Align and Distribute, the Transform panel, the bounding box and the
selection outline, clicks, the marquee, document.inspect and
document.node, Fit to Artwork Bounds and Fit to Selected Art, canvas
culling, thumbnails, the SVG filter region of an instance with a
raster effect, raster effect images, Export Selection, the SVG of an
artboard, printing, and the PDF, EPS, EMF/WMF and DXF writers use the
new box. The renderer also culls an instance by the effects and
brushed strokes in its art, and it culls a blend, envelope or repeat
by the brush art of what it holds and the effects in the art of the
instances in it. It culls an instance with geometry effects of its own
by the effects in its art after those geometry effects reshape the art.
It measures the effects in a symbol's art once for each symbol and
linear part of the transform that places it. For symbols whose art
holds instances, it measures at most 4,096 placements a frame, and at
most 4,096 more for each pattern tile it rasterizes and each placed
document it draws. Past that, it estimates the reach from the symbol's
reach with no transform, which it measures once. When the drawn
document's symbols change, the renderer drops the cached bounds of the
instances and of the objects that hold them.
The PDF and EPS writers, the SVG of an artboard and Skip Blank
Artboards grow the box of an instance whose art holds brushed strokes
by 16 times the widest stroke (at least 1 pt) of the objects in that
art that have a brushed stroke, plus 8 pt, as the renderer grows the
cull bounds of a brushed path. They keep an instance whose brush art
reaches the page. The SVG of an artboard also keeps an object that
holds an instance when what the canvas paints for it, the effects in
the symbol's art and the instance's own included, reaches the artboard.
Not yet: other commands that measure objects, such as Select › All on
Active Artboard, Transform Each and Convert to Artboards, still measure
an instance by the square.
Docs: docs/mcp.md, docs/target-app-parity.md.
The SVG import's style cascade tested every <style> rule against each
element it was asked about. The import asks about the objects outside
<defs> and the like when the file contains `display`, about each shape
when the file contains `non-scaling-stroke`, and about each <text>, its
spans and its ancestors. On a file with 2,000 class rules and 100,000
rectangles, `vectorcraft-cli info` took 3.54 s with one `display`
attribute in the file and 2.03 s without it.
The rules are now filed under the id of their selector's rightmost
compound, else under its first class, else under its type. An element
is tested against the rules filed under its id, its classes and its
type, and the rules filed under none of these, in source order. It
matches the same rules in the same order and gets the same
properties. The file with the `display` attribute now takes 2.10 s.
Docs: docs/target-app-parity.md.
Inkscape 1.2+ saves a multi-page document as <inkscape:page> elements
in its <sodipodi:namedview>; VectorCraft opened it with one artboard
the size of the root, leaving the other pages' art outside any. Each
page with a size now becomes an artboard at its place (through the
viewBox, as the art is), named by its inkscape:label or "Artboard N".
Files without pages keep their one artboard.
Fixes#1601
A filter that can't become a live effect warned "filter on a group
ignored", even on a plain <rect>: usvg wraps every filtered element in
a group of its own, which the message named. The warning now names the
filter and its primitives and the element (by id, or "an object"), and
says it is drawn without it: "filter 'f' (feColorMatrix) on an object
isn't supported; drawn without it".
Fixes#1598
<flowRoot> (SVG 1.2 flowed text, which Inkscape writes for text typed
into a frame) was dropped without a word: usvg doesn't draw it. The
text pass now reads it as area type: the first <rect> of its
<flowRegion> is the frame (with the rect's transform), each <flowPara>
a paragraph (white space collapsed), styled through the same cascade
as <text>. Another kind of region leaves the text out with a warning.
Fixes#1568
Export::class() deduplicated declaration blocks with
classes.iter().position(), an O(n) scan per style, making exports with
many distinct styles (e.g. large palettes) quadratic overall. Track the
1-based class number per declaration in a HashMap alongside the
first-use-ordered Vec, so each lookup is O(1) while output stays
byte-identical.
Also adds a regression test covering 256 distinct declarations with
recurrence of early styles, for both InternalCss and StyleEntities
styling.
usvg takes a `transform` CSS property as a presentation attribute that
overrides the element's own, but reads its value as SVG: CSS units
(`translate(100px, 0)`, `rotate(45deg)`) don't parse, and the object
was left with no transform at all. Before usvg runs, transform
declarations in `style` attributes and `<style>` rules are now written
in SVG syntax (lengths in px, angles in deg/rad/grad/turn, translateX/Y,
scaleX/Y and skew as SVG's functions); values that can't be are left.
The text pass's own cascade now expands the `font` shorthand into its
longhands, as usvg does for the rest of the drawing, so text styled
with `font: italic bold 30px …` keeps its size, weight and style.
Refs #1557
A <textPath href="#id"> pointing at a basic shape imported as point type
with "textPath has no usable path", as only <path> was followed. SVG 2
allows any basic shape, and Inkscape writes one whenever text is put on
a circle. The shape now becomes its equivalent path as SVG 2 defines
it: circles and ellipses start at 3 o'clock and rounded rects after the
top-left corner, all clockwise; lines, polylines and polygons follow
their points. The shape's transform applies as for a <path>. Shapes
that render nothing (zero radius or size) still fall back to point
type with the warning.
Fixes#1527
Rarely set fields move into one optional boxed NodeExtras, and large NodeKind payloads (images,
live shapes, blends, envelopes) are boxed. Every object, and every undo step that copies it,
shrinks: a 50k-path move keeps ~24.5 MB per step instead of ~40 MB. Files stay byte-identical
(Node keeps its flat JSON through a borrowed Serialize and a from-wire Deserialize, no flatten),
and loading is slightly faster. Undo and redo reuse their step's size estimate instead of
walking the document again (8.3 -> 5.6 ms for a 50k-path move).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VmMmc1J8XeNLxhRihWv9cc
# Conflicts:
# crates/engine/src/cmd/graph.rs
# crates/svg/src/export.rs
Every edit of an object copied its whole appearance (its fills, strokes and effects, about
540 bytes for a basic object) into the new node, though a move leaves it as it is. Over 45
whole-selection moves of 10,000 paths, undo history grew by 589 MB; now 349 MB (41 % less), and
a nudge or a drag of the selection takes 12 ms instead of 15.
- Node::appearance is a vectorcraft_doc::Shared<Appearance>: copy-on-write. A clone shares it,
and the first change through DerefMut copies it (Arc::make_mut). Reads, writes, equality (also
against a plain Appearance) and the saved form are those of the Appearance itself, so call
sites read and change it as before. Sites that build or assign a whole appearance add .into(),
and the few that need a plain copy take (*n.appearance).clone().
- Node::transform changes the appearance only when it has gradients to transform, and pattern
paints are transformed only when there are some: a move no longer copies an appearance it
doesn't change.
The workspace suite (5,301 tests) and clippy pass with the change; the doc and engine suites
pass again after the transform guard.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VmMmc1J8XeNLxhRihWv9cc
At 50,000 paths unless noted, against main:
- Pathfinder Outline (300 paths): 145 → 7.5 ms. Each segment was tested against every junction
of the arrangement, and each chain against every chain kept so far. Now a segment tests only
the junctions inside its control box (junctions are sorted by x; a point within reach of a
curve is within reach of that box), with the same nearest-point test. Coincident chains are
found through a grid on their midpoints, taking the first match in the same order a scan does.
- export SVG: 267 → 176 ms. Path data is written straight into one string (`push_num`, the
same digits and trimming as `fmt_num`) instead of a string per number, point and segment.
- open .vectorcraft: 239 → 195 ms. The JSON was parsed once only to find where it ends:
- A file with no NUL has no data after it.
- Otherwise the marker (which holds the first NUL, as JSON can't) is taken when it directly
follows the JSON's last byte, as the writer puts it.
- Anything else takes the old parse.
`perf --deep` prints output hashes of an SVG export and a save → open → save round trip; main
and this branch print the same ones. pathfinder_pinned (Outline included) passes, and so do the
pathops, format and svg suites (345 tests).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VmMmc1J8XeNLxhRihWv9cc
Adds the Character panel menu's Digits option (with the Middle Eastern /
Indic options, beside Paragraph Direction in the Paragraph panel) as a
character attribute: CharStyle::digits, saved only when set, with
text.setFormat {digits} and text.setRangeStyle {id, start, end, digits}
("default" | "arabic" | "hindi" | "farsi"; a bad value is an error).
Shaping draws every digit of the Western, Arabic-Indic (U+0660–U+0669)
and Eastern Arabic-Indic (U+06F0–U+06F9) sets in the chosen system,
whatever was typed, before font fallback, so a font without the
Arabic-Indic digits gets a fallback for them. The text, its clusters,
the caret, selection and search stay as typed, as with All Caps; SVG
export writes the digits as drawn.
Catalog rows for Digits, Arabic, Hindi and Farsi in the ten translated
languages. Docs: docs/mcp.md (Digits), type-parity.md (digit types
done; Character Direction, kashidas, composers and the split caret
still missing), target-app-parity.md and gaps.md.
Behaviour from the public documentation (a character-level option with
the values Arabic, Hindi and Farsi in the Character panel menu):
https://helpx.adobe.com/indesign/desktop/language-and-proofing/arabic-and-hebrew/choose-digit-types.html
Tests: doc (the mapping and serialization), text (glyphs of "page 3" in
Hindi/Farsi equal the typed Arabic-Indic digits' on the typed clusters;
skips without a font covering the three sets), engine (setFormat,
setRangeStyle, undo, error), svg (digits written as drawn), ui-egui
(the menu shows with the Indic options).
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Mask art that is all visibility:hidden imports as nothing, and opacity_mask
then returned no mask: the object was drawn whole. An empty mask is what the
file means (black all over); the renderer and the PDF and SVG exports already
draw empty mask art by its clip and invert options.
A character attribute (Character panel menu with the East Asian options;
`text.setFormat` / `text.setRangeStyle {proportionalMetrics}`), saved only
when on. In horizontal type it applies `palt`; vertical type sets as before
until the vertical shaping change (`vpal`) follows.
Line-end Punctuation Half Width takes nothing more off the punctuation
`palt` re-spaced (the flush opening bracket, consecutive punctuation, the
line-end half width): the segment is shaped once more without `palt`, and
the glyphs whose advance differs are marked. Punctuation the font leaves
full width is trimmed as before. SVG writes `"palt" 1` with the
character's other features.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A root such as width="96pt" height="96" took CSS pixels (0.75 pt) along x and points along y,
so a square came in 24 x 32 pt and the artboard 96 x 96 instead of 96 x 72; with a viewBox the
art was stretched too.
When either root side is absolute, both axes now take CSS pixels at 96 per inch (usvg already
parses at that resolution): the unitless or px side is the same CSS length it would be in a
browser. The root scale is one number.
The test opens width="96pt" with height 96, 96px and 72pt, and width 128 with height 72pt: a
96 x 72 artboard and a 24 x 24 square; with viewBox 0 0 32 32 a 72 x 72 square at x 12 (meet),
and with preserveAspectRatio="none" the whole artboard.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
# Conflicts:
# ROADMAP.md
Reversal read the midpoints after Gradient::reverse had reordered the stops, so each stop
took the wrong segment's midpoint: red-to-blue with its midpoint at 20% reversed to a 50%
midpoint instead of 80%, moving the transition.
Gradient::reverse now mirrors each segment's midpoint with it, so a reversed gradient is the
same ramp the other way round; paint.editGradient's own (wrong) pass is gone, and the SVG
importer's reflect spread, which had a correct copy of the same mirroring, uses it too.
Tests: two- and three-stop gradients with off-centre midpoints sample the same reversed (t vs
1 - t) and come back after two reversals; paint.editGradient reverse turns a 0.2 midpoint into
0.8.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
# Conflicts:
# ROADMAP.md
The styles were stored on the text and written to SVG's text-decoration,
but the type was drawn without the lines. vectorcraft_text::decorations
now gives each underlined or struck-through stretch of a run on a line
its bar, placed and sized from the font's own underline and strikeout
metrics (with fallbacks for fonts that have none). The canvas, Create
Outlines, PDF export (outlined and real text) and SVG's outlined text
draw them in the run's paint.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The brands check keeps other products' names out of user-facing text; #694's
SVG warnings called Radial Blur, Smart Blur and Unsharp Mask "Photoshop-style
raster effects". They are "pixel effects" now.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Effect › Blur › Radial Blur (spin/zoom, draft/good/best) and Smart Blur
(Normal mode), Effect › Sharpen › Unsharp Mask: Photoshop-style filters in
vectorcraft_effects::pixel, run by the renderer on the object's pixels in
stack order with Gaussian Blur and Feather, cached while panning; lengths in
points, bounded work per pixel. PDF, Expand Appearance and SVG export write
the effected objects as images. Dialogs with preview (method/quality
dropdowns, fields in documented order), menu entries, translations, tests.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Other editors export a document with a single layer without a layer group:
the layer's name goes on the root <svg> (id, or data-name) and its art sits
directly inside. Such a file opened as "Layer 1"; now its one layer takes the
root's name. Files whose top-level groups are the layers are unchanged, and an
Inkscape root's generated id (with inkscape:version) isn't taken as a name.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Top-level groups already opened as layers named from data-name, else their
id. Now that also holds when one more id-less group wraps them (a transform
on all the art, or a <switch>'s chosen group), and hidden objects inside a
<switch> are kept (hidden) instead of dropped.
Nested groups stay groups unless something marks them as layers: the SVG
export now writes data-vc-layer="sublayer" on layers inside layers, and
import makes such a group (or an Inkscape layer group) a sublayer of the
layer holding it, in that layer's colour. A marked group anywhere else
stays a group.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Document symbols placed inline in a run of type (beyond Illustrator; like
InDesign inline anchored objects): TextRun.inline holds the symbol, scale and
shift; the run is one U+FFFC laid out as a glyph sized to the art, centred on
the cap height. text.insertInline and Type > Insert Inline Symbol; editing
keeps the graphic whole; canvas, SVG (<use>) and PDF draw the art; Create
Outlines turns it into a symbol instance.
Each paragraph has its own alignment, indents, spacing, hyphenation, tab
stops and paragraph style (TextObject.paras; para stays paragraph 0's, so
old files and readers work). Layout, editing (split/merge), threads, the
Paragraph/Tabs/Paragraph Styles panels, ranged text.setStyle/setFormat/
tabs/paraStyle.apply, SVG export/import and the fuzzers follow.
Area Type Options > Align: Top / Center / Bottom / Justify (AreaOptions.verticalAlign,
LayoutOptions.vertical_align). Each row/column cell is aligned on its own; rectangular
cells shift their lines, other frames and text wrap reflow until settled without
losing text. Justify shares the leftover space equally between line gaps. Area Type Options
shows Align and First Baseline as dropdowns (the parameter dialog's choices table).
An SVG used as an animation rig lost its hidden alternates and their
rotation pivots: the exporter left hidden objects out (only hidden layers
could be kept), and the importer dropped data-* attributes.
- SVG export: hiddenLayers (on by default for document.save, as before)
now keeps hidden objects too, each written display="none" on its own
element (path, image, text or group). Exports still leave them out
unless asked; the CLI's convert asks, as a conversion keeps the
document.
- An object's own data: ObjectAttributes.data, the data-* attributes in
order (ours, data-name and data-vc-*, aside). The importer keeps them on
the objects and layers they belong to (at most 64 per element), the
exporter writes them back, the native format saves them (missing in
older files), and object.setProps {data: {key: value|null}} sets or
removes them.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Corner widgets only ever showed on live rectangles: CornerWidgets::of bailed
out unless the selection's live shape was LiveShape::Rectangle, and
object.setLiveShape only edited rectangle radii. A star is a plain path, so it
had no widgets with either selection tool.
- geom::corners: the corners of any path (anchors without handles between two
straight sides) and the path with them cut round, inverted round or
chamfered, each corner a circle tangent to both sides, its radius no larger
than takes the cut halfway along its shorter side. Rectangles now cut their
corners with it (bit-identical anchors and layout).
- doc::corners::LiveCorners/set_corners: one model for a live rectangle's,
a live polygon's (new radii/kinds) and any other path's corners (new
LiveShape::Path keeping the uncut outline, plain again once nothing is cut);
radii scale with transforms (Scale Corners) and stay circular.
- object.setLiveShape takes anchor indices for `corners` on any path; polygons
keep a shared radius as their sides change.
- Widgets: Direct Selection on any path, Selection on live rectangles and
polygons; placed on each corner's bisector, the drag follows it, the red
limit outline marks corners at their own limit; the angle preference and
View > Hide Corner Widget apply. Corners dialog and the Properties and
Transform panels' Corner Radius (now on polygons too) work on them.
- Tests for the star, the polygon and a pen path in geom, doc, tools, engine
and ui-egui; docs and ROADMAP.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Live rectangles drew elliptical corners after an uneven scale in v0.4.0;
inconsistent on a rectangle that isn't square:
- doc: LiveShape::fold_scale moves an uneven scale left in `xf` (files
saved before #291) into the size and radii; `transform` uses it, and
`folded()`/`corner_style` give Live Corners document units.
- engine: object.setLiveShape folds that scale first, so setting a radius
or kind (fields, dialog, widgets, MCP) gives circular corners on such
shapes instead of keeping the ellipses.
- geom: max_corner_radius/fitted_corner_radius are the one limit every
corner shares (half the shorter side).
- tools: corner widgets sit at the centres of the corners as drawn (a
radius past the limit put them off the arc, further in along the long
side), drag in document units on stretched shapes, and outline the
edited corners in red at the limit, as the reference app does.
- svg: CSS export writes the drawn radii (CSS would draw a radius past the
limit when its neighbours leave room).
- docs: mcp.md Live Corners, ROADMAP.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Gert Pellin