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M3.98: radial annotator extent ellipse, aspect handle and off-centre focal point

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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>
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bflatastic
2026-10-05 04:43:43 +07:00
co-authored by Claude Opus 5.5
parent b8793eeaef
commit d8eff17b9f
26 changed files with 701 additions and 106 deletions
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@@ -155,6 +155,17 @@ delete it, hold Alt to copy it), dragging the end handle changes the vector. The
{"name":"press_key","arguments":{"key":"Delete"}}
```
A radial gradient's annotator also draws its extent: a dashed ellipse around the centre (the start, drawn as a ring)
with a dot on it across the bar (drag it to change the aspect ratio); dragging the ellipse elsewhere rotates it.
The dot inside the centre ring is the focal point, where the first stop sits: drag it for an off-centre radial, back
onto the centre to centre it. `paint.setGradientGeom` sets the same things directly (`aspect` in %, `focal` in
document coordinates or `null`; `start`/`end` may be left out), and they export as SVG `fx`/`fy` and PDF two-point
radial shadings:
```json
{"name":"run_command","arguments":{"command":"paint.setGradientGeom","params":{"aspect":60,"focal":[130,140]}}}
```
Freeform gradients: `paint.editGradient {kind: "freeform"}` places four or more colour points inside each selected
object (coloured along the stops; `mode: "points"|"lines"` is the Draw toggle). `paint.freeform.get` lists the points
(document coordinates), lines and the selected point; `paint.freeform.addPoint {at, color?, opacity?, spread?,