Add-ons: Parametric Shape Tool — re-editable stars, polygons, rings, arrows, gears and more

Path Precision Tools gains the Parametric Shape Tool: ten kinds of shape
(rectangle, ellipse, polygon, star, ring, arrow, cross, heart, gear,
speech bubble) that stay editable as numbers.

- Geometry in vectorcraft_pathops::addons::pathtools::shapes: each kind's
  outline, corner rounding limited to the middle of a side, a fingerprint
  of the outline, recovery of centre, size and rotation after a move,
  turn or scale, and recognition of plain rectangles, ellipses and
  regular polygons.
- The tool (parametricShape, All Tools drawer and Object › Plug-ins ›
  Path Precision Tools only, no shortcut): drag from the centre (Shift:
  45° steps), arrow keys change the count and values while dragging,
  handles edit a selected shape, double-click places one.
- Commands addon.pathtools.shape.create / .set / .convert, one undo step
  each; params checked (counts 3..1000, sizes up to 16384 pt).
- A shape keeps its numbers in one object-data entry (vc-pathtools-shape)
  that SVG export already leaves out; anchor edits make it a plain path.
- Parametric Shape panel, cursor stand-in, catalog rows in all 25
  languages, docs and tests.

docs/ui-parity.md

@@ -1,6 +1,6 @@
 # UI and interaction parity
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-30 · **Change:** minor (Gradient panel presets; View › Hide Artboards hides their edges and shows the canvas as paper (#4038); scores unchanged) · **Target:** Adobe Illustrator 2026 (30.x)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-30 · **Change:** minor (Path Precision Tools add-on: the Parametric Shape Tool and its panel; scores unchanged) · **Target:** Adobe Illustrator 2026 (30.x)
 
 ## Feature submission evidence
 
@@ -324,6 +324,8 @@ next unit in the order a right-click on a ruler lists them, from Feet back to Po
 | Preferences › General › Constrain Angle | done | arrow keys and Shift drags along the turned axes; the Rectangle, Rounded Rectangle, Ellipse and grid tools, point and area type and the shape size dialogs draw along them with the bounding box turned; Shift-drawn polygons and stars keep the turned base orientation; the Line Segment tool's Shift steps count from it (#394, <https://helpx.adobe.com/illustrator/desktop/manage-objects/arrange-objects/rotate-objects-by-specific-angles.html>); arcs, spirals, flares and Pen paths are not turned |
 | Tabs panel: a stop drags from where the press landed, a stop just added included | done | #1458 |
 | Outline view keeps template layers in Preview, dimmed | done | #1486; a picture placed to be traced stays visible under the outlines |
+| Smart Pen add-on (VectorCraft addition): Object › Plug-ins › Smart Pen selects the Smart Pen Tool, which the All Tools drawer lists under its own heading but neither toolbar shows as shipped (no shortcut), and opens the Smart Pen panel (next segment straight or curved; Remove Points Keep Shape, Make Smooth, Make Corner, Retract Handles, Close or Join). The tool draws (click: straight or curved segment, a curve after a straight one tangent; drag: smooth anchor, Alt breaks the handle, Shift 45°, Space moves it; Tab switches a segment; rubber band; close, join, continue) and edits without switching tools (click selects a point, drag moves it, Alt-click removes it keeping the shape, Shift+Alt-click deletes it, double-click toggles smooth/corner; handle drags with Shift and Alt; segment drags reshape, Alt-click adds a point) | done | `addon.pen.*`, `crates/tools/src/addons/smart_pen.rs`, `crates/ui-egui/src/addons/pen.rs` and their tests; not an Illustrator feature, so it is not scored |
+| Path Precision Tools add-on (VectorCraft addition): Object › Plug-ins › Path Precision Tools selects its four tools (Anchor Eraser Brush, Extend Path, Measure & Inspect, Parametric Shape), which the All Tools drawer lists under their own heading but neither toolbar shows as shipped, opens the Anchor Inspector panel (the selected anchor's X/Y and handle lengths and angles as fields; Make Smooth, Make Corner, Equalize Handles, Remove Points Keep Shape, Add Points, the three ways to close) and the Parametric Shape panel (kind, count, W/H, rotation, the kind's own values and corner radius of the selected parametric shape, or of the tool's next one), and runs Add Points at / Split at Crossings and Convert to Parametric Shape; the Parametric Shape Tool draws ten re-editable kinds from the centre (↑/↓ and ←/→ change their numbers while dragging) and edits a selected one with handles; a double-click on the brush or Extend Path tool opens its options | done | `addon.pathtools.*`, `crates/tools/src/addons/`, `crates/ui-egui/src/addons/pathtools.rs`, `crates/ui-egui/src/addons/pathtools/shape.rs` and their tests; not an Illustrator feature, so it is not scored |
 | Smart Pen add-on (VectorCraft addition): Object › Plug-ins › Smart Pen selects the Smart Pen Tool, which the All Tools drawer lists under its own heading but neither toolbar shows as shipped (no shortcut), and opens the Smart Pen panel (next segment straight or curved; Remove Points Keep Shape, Make Smooth, Make Corner, Retract Handles, Close or Join). The tool draws (click: straight or curved segment, a curve after a straight one tangent; drag: smooth anchor, Alt breaks the handle, Shift 45°, Space moves it; Tab switches a segment; rubber band; close, join, continue) and edits without switching tools (click selects a point, drag moves it, Alt-click removes it keeping the shape, Shift+Alt-click deletes it, double-click toggles smooth/corner; handle drags with Shift and Alt; segment drags reshape, Alt-click adds a point); an Alt-drag away from paths selects the points inside a marquee | done | `addon.pen.*`, `crates/tools/src/addons/smart_pen.rs`, `crates/ui-egui/src/addons/pen.rs` and their tests; not an Illustrator feature, so it is not scored |
 | Path Precision Tools add-on (VectorCraft addition): Object › Plug-ins › Path Precision Tools selects its three tools (Anchor Eraser Brush, Extend Path, Measure & Inspect), which the All Tools drawer lists under their own heading but neither toolbar shows as shipped, opens the Anchor Inspector panel (the selected anchor's X/Y and handle lengths and angles as fields; Make Smooth, Make Corner, Equalize Handles, Remove Points Keep Shape, Add Points, the three ways to close) and runs Add Points at / Split at Crossings; a double-click on the brush or Extend Path tool opens its options | done | `addon.pathtools.*`, `crates/tools/src/addons/`, `crates/ui-egui/src/addons/pathtools.rs` and their tests; not an Illustrator feature, so it is not scored |
 | Artwork Cleanup add-on (VectorCraft addition): Object › Plug-ins › Artwork Cleanup opens its panel, which checks the selection or the document for 16 kinds of issue, lists them with counts, and shows or fixes the picked rows or all of them, each fix one undo step; Simplify Anchors (Keep Shape), Rejoin Path Pieces and Deep Ungroup open their options first | done | `addon.cleanup.*`, `crates/ui-egui/src/addons/cleanup.rs` and its tests; not an Illustrator feature, so it is not scored |
@@ -368,6 +370,7 @@ separate. Scores and hours unchanged. [Behavior and command details](development
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-30 | minor | Path Precision Tools add-on: the Parametric Shape Tool (ten re-editable shape kinds), its panel and Convert to Parametric Shape; scores and estimates unchanged |
 | 2026-10-30 | minor | Smart Pen add-on: an Alt-drag away from paths selects points with a marquee; scores and estimates unchanged |
 | 2026-10-30 | minor | Color Effects add-on: Select by Color Kind; scores and estimates unchanged |
 | 2026-10-30 | minor | View › Hide Artboards hides their edges and shows the canvas as paper (#4038); scores and estimates unchanged |