A new gradient kind, `diamond`, runs its stops from the center (the
start) out to a square with a corner at the end of the vector; the
aspect stretches the square across the vector into a rhombus. The
Gradient panel's Type row has a Diamond button, the Gradient tool draws
the square with the aspect handle and center ring, and a gradient
fitted to an object covers its box.
- Model and canvas: the level is |x| + |y| in the square's frame; a
square with no area (no vector, an aspect of 0, numbers out of range)
paints the last stop. The canvas draws it as pixels, out to a
stroke's miters, caps and arrowheads. Transforms keep the vector and
take the mapped size across it as the aspect.
- Commands: `paint.setFill`, `paint.editGradient` and
`paint.setGradientGeom` take `kind: "diamond"`; a negative aspect or
a focal point is an error. A conic or diamond gradient that a plug-in
returns with a focal point loses the focal point.
- Gradient tool: dragging the aspect handle of a radial or diamond
gradient whose file gave it a negative aspect now sets a positive
aspect; only a conic's negative aspect mirrors it.
- Export: PDF, SVG, EPS and legacy .ai write four linear gradients, one
for each quarter of the square, clipped to the shape (PDF as axial
shadings). PDF and SVG write an image for translucent stops, a
dithered fill or a flat square, and for the Perceptual method unless
PDF writes the stops as spot color shadings. SVG writes a diamond on
type characters as a radial gradient through the corners, and so
does CSS. A swatch library saved as CSS gets four corner layers, a
value for the `background` property (a circle when the swatch is
turned by an angle that is not a multiple of 90 degrees). The .ai
editing data holds a radial gradient through the corners. The
document exports give a warning.
- SVG export: a stroke drawn as an image, as conic wedges or as diamond
quarters now covers the miters, caps and arrowheads that reach past
its paint box.
- PDF import reads a function-based shading whose color is the same
along each square about the origin of its space as a diamond.
- Object > Expand gives nested squares or a mesh of rings.
Docs: docs/mcp.md, docs/target-app-parity.md.
A fourth gradient kind, conic (also accepted as `angle` or `conical`),
sweeps the stops once around the center (the gradient's start),
clockwise on the page from the vector, with a seam where the last stop
meets the first. A negative aspect mirrors the sweep, and reflecting an
object turns its sweep the other way, also for a conic without a
vector or with a flat extent.
- Gradient panel: a Conic button in the Type row; the Aspect Ratio
field works for conic gradients and keeps a mirrored sweep mirrored.
- Gradient tool: the extent ellipse, aspect handle and center ring of a
radial gradient, without a focal point.
- Rendering, swatch chips, transforms, warps, plug-in round trips, and
Object > Expand into wedges or a mesh of columns around the center.
- Commands: a negative `aspect` is an error for linear and radial
gradients, and so is a `focal` point for a conic gradient.
- PDF export writes a function-based shading whose calculator function
turns the angle into the ramp, and PDF import reads a function-based
shading that turns around the origin of its space back as a conic
gradient, also when that origin lies outside the painted area. A
PDF/A file, or a conic with more than 97 stops, gets an image
instead.
- SVG export writes 360 solid wedges clipped to the shape for opaque
stops and an image otherwise, and a linear gradient on characters.
- CSS export writes `conic-gradient(from ...)`, with the stops mirrored
for a mirrored sweep.
- EPS and legacy .ai export write 360 solid wedges; the .ai editing data
holds a linear gradient along the vector with the same stops.
- .af files: conical gradients open as conic gradients.
- An export that writes the gradient in another form gives a warning.
Supersedes #2326 and includes switch87's code from it.
Co-authored-by: Gert Pellin <gert@pellin.be>
The params docs now state the direction (and the zero) of each angle or
rotation a command takes; behaviour is unchanged. Shape creation, text.create,
the grids, add-on shapes, saved views, Liquify, Puppet Warp pins, Mirror and
Radial Repeat and Vector Halftone turn clockwise; text character rotation,
gradients, the eraser tip and print screen angles turn counter-clockwise.
view.saved.new's rotation note changes its schema, so the API level goes to 3.
A test walks every command's params doc and fails when a param named like an
angle or rotation doesn't say clockwise or counter-clockwise.
A stop selected on a whole dynamic symbol instance's gradient stayed
selected after Direct Selection picked an object of that instance's art,
because the instance stayed the first selected object. The Gradient panel
kept the stop highlighted and the Gradient tool took Delete and the arrow
keys for it, while every gradient edit is refused for a picked object.
The stop's owner now records whether a part is picked, so the stop is not
selected while one is, and is selected again when the whole instance is.
The `method` text of `paint.editGradient` and two passages of
docs/mcp.md said a CMYK document writes RGB and Lab gradient stops in
CMYK. An export that converts colors to an RGB destination profile
converts them to that profile first, so in a CMYK document they stay
RGB and a Perceptual spot gradient with such stops is written as an
image with the spot warning. The texts now say so, and the test of RGB
stops in a CMYK document also checks the RGB destination case.
The method help of paint.editGradient and docs/mcp.md said a Perceptual
gradient with spot stops becomes an image in PDF unless every other stop
is paper white, CMYK or gray. PDF export checks each stop's color as it is
written: a CMYK document, or an export that converts colors to a CMYK
destination profile, writes RGB and Lab stops in CMYK, so the gradient
becomes a DeviceN shading. Both texts now say so, and a test covers the
CMYK document and CMYK destination cases.
The PDF writer writes a spot gradient as a Separation or DeviceN shading
only when it is linear or radial; freeform gradients and dithered fills
are written as images in process colors.
- `paint.editGradient`'s method help and the Method paragraph in
docs/mcp.md limit the Perceptual exception to linear and radial
gradients.
- The Linked gradient stops paragraph in docs/mcp.md no longer says the
writer has no DeviceN: a gradient mixing spot inks with other spot,
CMYK or gray inks exports as a DeviceN shading, and only a mix with RGB
or Lab colors is written in process colors, with a warning.
The `method` text of `paint.editGradient` and the Method paragraph in
docs/mcp.md said SVG and PDF exports draw a Perceptual gradient as an
image. PDF writes an eligible one natively: tints of one spot ink as a
Separation shading in that ink, and spot inks mixed with other spot,
CMYK or gray inks as a DeviceN shading. Gradients without spot stops,
with RGB or Lab stops, dithered fills and curves with too many stops
still become images there. Both texts now say so.
A Perceptual linear or radial gradient that mixes spot colors with each
other or with CMYK or gray stops was written as an image in process
colors. It is now written as a DeviceN shading of its inks, with the
stops on its Perceptual curve: at each one, the inks of the two stops on
either side are mixed at the weight where the two colors mixed in
display RGB have the OKLab lightness of the color on the curve.
- Gradient::ink_mixes gives the curve's stops as weights between stops,
under the same 4,096-stop limit as ink_tints.
- Perceptual gradients that mix a spot color with RGB or Lab stops,
dithered fills and freeform gradients stay images, and the warning
now names those cases.
A Perceptual linear or radial gradient was always written as an image,
so a gradient of spot ink tints lost its plate, and no warning named the
spot ink.
PDF export now writes a Perceptual gradient whose stops are tints of one
spot color (and paper white) as a Separation shading in that ink. Its
tints follow the gradient's curve: at each stop the renderer places on
the curve, the tint with the OKLab lightness of the color there.
Dithered fills, freeform gradients and Perceptual gradients that mix a
spot color with other colors are still images, and the export now warns
when such a gradient has stops linked to a spot swatch that its spot
colors are written in process colors.
Illustrator 30.0's Method choice in the Gradient panel
(https://helpx.adobe.com/illustrator/desktop/paint-and-fill/create-and-edit-gradients/control-perceptual-interpolation-in-gradients.html).
- paint.editGradient takes `method: classic|perceptual` (one undo step);
paint.setFill/setStroke take it in `gradient`, and gradient params (swatches,
copied paints) carry it when Perceptual. Anything else is refused without
editing. One edit can set `method` and `dither` together.
- The Gradient panel shows a Method menu (Classic, Perceptual) for linear and
radial gradients, dimmed without a gradient; the Dither box stays under the
stops.
- i18n: "Perceptual" where a complete catalog lacked it, and the `method`
error in all 24 catalogs.
- Docs: G13 (estimate 14–24 h → 13–23 h, after Dither's 15–25 h → 14–24 h),
target-app-parity (row and evidence), ui-parity, mcp.md, plugins.md.
Illustrator 30.0's gradient Dither, from the public documentation
(https://helpx.adobe.com/illustrator/desktop/paint-and-fill/create-and-edit-gradients/control-dither-in-gradients.html):
a Dither checkbox in the Gradient panel; dither converts the gradient into
pixels with subtle noise, works with gradient fills only, and follows the
Document Raster Effects resolution.
- Gradient gains `dither` (serde default false, written only when on, so
older files open unchanged and new files keep it).
- The renderer draws a dithered linear or radial fill as an image paint: the
gradient sampled a cell per device pixel or finer (quarter-octave steps,
cached per thread), each channel given seeded triangular noise of up to a
level before rounding. Same pixels every run; strokes and undithered fills
draw exactly as before. PNG and other raster exports go through it.
- SVG and PDF write a dithered fill as an image at the document's raster
effects resolution, clipped to the shape (the freeform-gradient path);
characters' fills stay vector gradients in SVG, with a warning.
- paint.editGradient and paint.setFill take `dither`; strokes refuse it.
The Gradient panel's Dither box is dimmed behind the Stroke proxy.
- i18n rows in all 24 catalogs; docs: G13, target-app-parity, ui-parity,
mcp.md, plugins.md.
object.transformEach refused reflectX, reflectY, random and copy given
as text, but read strokes, corners, objects and patterns given as text
as the key left out. With Scale Strokes & Effects on,
{"scaleH": 200, "scaleV": 200, "strokes": "false"} scaled the stroke,
recorded an undo step and kept the params for Transform Again, which
repeated the call. artboard.rearrange, artboard.move and
artboard.duplicate read their patterns option the same way, and
artboard.setProps reads its patterns, strokes and corners options the
same way.
These commands now refuse such a value with "`<key>` must be true or
false" before they change anything. So do the other options and
numbers of artboard.setProps and artboard.move, the art of Duplicate,
Copy and Cut Artboard, the shape commands and path.create, path.close,
path.setHandle, path.moveAnchors, the Pencil, Curvature, Reshape
Segment and Blob Brush options, text.create, text.createInPath,
text.setRangeStyle, text.editRange, text.getRange, text.touchType,
text.areaOptions, type.step, the font size steps,
type.opticalMarginAlignment, type.systemLayout, type.fractionalWidths,
type.ruby, the symbol and swatch commands, the Appearance panel's
commands, the gradient and freeform gradient commands, Shape Builder,
Live Paint, Image Trace, the opacity of object.setProps, the radius,
sides and relativeRadii of object.setLiveShape, the reference point of
object.setBounds and the artboard of Align, Distribute and Distribute
Spacing. They refuse a number given as text with "`<key>` must be a
number, not <value>", and a gradient stop's tint with "stop <n>:
`tint` must be a number". A null still reads as the key left out.
Docs: docs/mcp.md, docs/target-app-parity.md.
In a CMYK document, paint.setFill stores an RGB color as CMYK through
the color settings, but the other commands that take a color stored it
as RGB: text.create, text.createInPath, text.setStyle and
text.setRangeStyle colors, a shapeBuilder.merge hex fill,
paint.editGradient stops, freeform gradient points, gradient mesh
points, the Symbol Stainer's color, and swatch.new {colors},
swatch.newGroup, swatch.editGroup and swatch.edit. The Mesh tool sent
the fill as a hex value, so a CMYK fill came in as RGB.
These commands now store such a color through paint::new_color, as
paint.setFill does, and take keepModel to keep RGB (shapeBuilder.merge
inside its fill object). A color the swatch
or gradient already has keeps its model, so stops sent back with a
moved offset keep their colors (the Gradient panel's ramp and the
Gradient tool send keepModel), and a stop that names a process
swatch takes the swatch's color as it is, in paint.setFill gradients
too. Where the app copies an existing color, it keeps the color's
model: the Color panel's sliders for gradient stops and freeform
points, a swatch put on a stop or a point (the stop popover, Alt-click
in the Swatches panel, a drop on the Gradient panel's ramp), the fill
the Mesh tool gives a new point or the Symbol Stainer applies, and the
colors the Color Guide, Color Themes and Recolor Artwork save as
swatches.
swatch.new {color, mode} converted RGB into CMYK before converting it
into mode, so the New Swatch dialog in RGB mode stored #00ff00 as
R101 G176 B62 in a CMYK document. With mode, the color is now
converted once.
Docs: docs/mcp.md, docs/target-app-parity.md.
Commands that read the selection through edit::selected_roots leave
out an object whose group is also selected (edit::roots_of). Fourteen
places that read `ids` kept an object listed together with its group.
Given ids that list an object and a group that holds it, Make Repeat
failed with "no such object", New Symbol failed or stored the object
twice in the symbol, and object.transform moved it twice (20 pt for a
10 pt move).
These places now pass explicit ids through edit::outermost, which
drops an id whose ancestor is also listed, with the filter that
roots_of runs on the selection (now edit::without_inner). Nothing else
is dropped or replaced: unlike roots_of, it keeps layers and
compound-path members. A list without nesting gives the same result as
before. Commands that take both ids and the selection as listed, such
as paint.setFill without item, are unchanged.
Docs: docs/mcp.md, docs/target-app-parity.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 M3/M4 work added ten panic sites the new workspace lints deny:
- doc: the lens/taper width profiles fall back to a uniform profile
instead of `expect` (the presets are a constant table, covered by tests).
- engine: `FlattenOptions::default` builds the medium preset directly
(`builtin`), `apply` skips an empty group instead of `expect`, the
writable-format fallback reports an error instead of `expect`, and the
new-art template's stroke comes back as an `Option` (it always has one)
instead of `expect`.
- tools: the freeform gradient drag returns no actions for a grab it never
starts (was `unreachable!`), and the gradient tool's release takes the
gesture with `if let` instead of `expect`.
Behaviour on the success paths is unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The Gradient panel's Stroke buttons now work: with the Stroke proxy on a
linear or radial gradient they lay it within the stroke (placed on the
page, as before), along the path (start to end of each subpath) or across
it (left edge to right edge; inside/outside strokes span their visible
side). `paint.editGradient {stroke: true, strokeMode}` sets it (new art
too with nothing selected); `document.inspect` reports
strokeOptions.gradientMode. Model: StrokeLayer.gradient_mode (default
Within, not written).
Shared geometry in effects::stroke::gradient: ribs on the bisectors of
the flattened path (fans round sharp corners, widened under arrowheads,
following width profiles) cut slices each painted with a linear piece of
the gradient (Gradient::span). The canvas and raster export clip them to
the stroke's outline and arrowheads, grown a pixel and composited with
copy so there are no seams and translucent stops paint once. SVG and PDF
write the same slices clipped to the outline, with a warning (new
vectorcraft_svg::export_with_report). Outline Stroke and Expand make
gradient meshes clipped to the outline. Mesh quads now grow along their
edges so thin quads show no seams. Dashes, profiles and arrowheads keep
working in both modes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Radial gradients show a dashed extent ellipse: its handle across the bar
sets the aspect ratio, the ellipse elsewhere rotates it, and the dot inside
the centre ring drags the focal point (GradientGeom.focal) for an off-centre
radial. paint.setGradientGeom takes aspect (%) and focal ([x,y] | null), and
start/end may be left out; the focal point keeps its place in the ellipse as
the vector, aspect and object transform. It renders as a two-point radial,
exports and imports as SVG fx/fy and PDF two-point radial shadings, expands
to off-centre rings, and travels in gradient params and the native format.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
With the Gradient tool on a freeform gradient the selected point shows its
spread as a dashed ring with a handle; dragging either sets the spread. A
point dragged out of the object is removed on release, and double-clicking a
point opens the gradientStop popover, which now edits the selected freeform
point (colour, opacity, spread). In Lines mode successive clicks draw one
smooth line (with a rubber band to the pointer); clicking an existing point
continues the line from it, and Escape or a click off the art ends it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Applying a gradient swatch records it as the gradient's swatch (the Swatches panel highlights
it and the Gradient panel's swatch menu marks it). A stop given a global or spot swatch (and a
tint) in paint.editGradient / a gradient paint's stops, dropped from the Swatches panel or
picked in the stop popover stays linked: editing the swatch recolours it, in art and in
gradient swatches, deleting it unlinks it. Spot stops separate on their plate, and a gradient
whose stops are all tints of one spot ink (or paper white) exports to PDF as a Separation
shading; gradients mixing models are written in one colour space (the PDF writer requires it;
mixed models used to abort the export).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A colour linked to a global or spot swatch keeps a tint (Paint::Solid.tint, 1 by default and
left out of files at 100 %): paint.setFill/setStroke {swatch, tint} apply the swatch at that
percentage, swatch edits recolour every linked colour at its own tint, and Color::tinted
resolves it (CMYK and Gray inks scale, RGB mixes toward white). swatch.new saves a tint as a
tint swatch ("Ink 40%") linked to its base. Spot tints separate as that percentage of their
plate (Separations Preview, PDF Separation value) instead of an ink-ratio guess. Adjust Color
Balance's Global mode (tint) shifts the tints of linked colours. The Color panel shows Tint
mode (the swatch chip, its name and a T slider) for linked colours; the Swatches panel
highlights the tint swatch in use. Gradient stops get the same link and tint fields (the
swatch walks cover them), so GradientStop is no longer Copy.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
paint.freeform.addPoint/setPoint/deletePoint/addLine/splitLine/selectPoint
and the paint.freeform.get query edit the freeform gradient behind the active
proxy (one undo step each; errors on other paints). The session keeps the
selected point. The Gradient tool on a freeform gradient selects and drags
points, adds points on the art (joined in Lines mode) and on lines, and
deletes the selected point. The Gradient panel shows the Draw toggle and the
selected point's colour, opacity, spread and Delete Point; the Color panel
recolours the selected point.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Freeform gradients carry their own points (colour, opacity, spread) and lines
(Catmull-Rom curves through points), blended by inverse-distance weighting
from each disc of pure colour. paint.editGradient {kind: "freeform", mode?}
places 4+ points inside the shape, coloured along the stops (which follow the
points' colours). The renderer samples the field on a cached colour grid
drawn as an image paint clipped by the fill or stroke. Moves, transforms,
box rebases and warps move the points; old files load unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Lossless gradient params carried a saved gradient's vector (document coordinates of the art it
came from) into swatch applications and the default paint, so a swatch applied elsewhere, or the
next shape drawn, got a gradient placed off the object. Applying a gradient swatch now fits it to
each object (keeping its aspect, on type in text space), and the default for new art keeps all
but the placement. Saving a swatch stays lossless.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The double-click that opens the popover lands outside it in the same frame, so the popover
closed as soon as it opened; only a later click elsewhere closes it now. The selected stop
remembers the document, first selected object and proxy it was picked on (Session::selected_stop),
so selecting other art or toggling Fill/Stroke no longer lets Delete or the arrows edit a stop
on a different gradient.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- A fill row no longer turns stroke edits (stroke.set, setAdvanced, paint.setStroke, gradients) into
a new stroke on a selected group's own stack: an active row only stands for edits of its kind.
- Removing, duplicating or moving items of other objects (`ids`) no longer re-points the active row.
- transparency.set with an item touches the item only for opacity/blend (isolate or knockout alone
is one undo step) and rejects unknown blend modes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Clicking a fill or stroke row runs appearance.setActiveItem; the toolbar,
Control bar and Properties proxies and the Color, Swatches, Gradient,
Stroke and Transparency panels show and edit that item, and the gradient
tool's annotator follows it. paint.setFill/setStroke, stroke.set/
setAdvanced, paint.editGradient/setGradientGeom and transparency.set take
item (omitted: the active item, null: the top one). Item edits and the
appearance.* commands address the selected objects' own stacks, so a
group's own fills no longer leak into its contents. Any selection change
clears the active item.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
No behaviour change: every command keeps its id, label, menu, shortcut and
params doc.
- Engine: swatch.* -> cmd/swatch.rs, graphicStyle.* -> cmd/style.rs,
appearance.* (incl. copyFrom) -> cmd/appearance.rs, stroke.set/setAdvanced
-> cmd/stroke.rs, paint.editGradient/setGradientGeom -> cmd/gradient.rs.
Shared helpers in cmd/mod.rs: leaf_targets/paint_targets (replacing three
copies) and unique_name (swatch and graphic style naming).
- UI: dialogs.rs -> dialogs/ with one file per dialog and a DialogSpec
registry (one DialogKind row per dialog); shared field widgets in
dialogs/form.rs. Headless frame tests draw and confirm every dialog.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
dotCooCoo