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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>
This commit is contained in:
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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crates/engine/src/cmd/create.rs
+1 -1
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@@ -229,7 +229,7 @@ fn flare(s: &mut Session, p: &Value) -> Result<Value> {
let stop = |offset: f32, opacity: f32| GradientStop { opacity, ..GradientStop::new(offset, vectorcraft_color::Color::WHITE) };
let radial = |centre: Point, radius: f64, stops: Vec<GradientStop>| {
let mut g = GradientPaint::new(Gradient { kind: GradientKind::Radial, stops });
g.geom = Some(GradientGeom { start: centre, end: centre + vectorcraft_geom::Vec2::new(radius, 0.0), aspect: 1.0 });
g.geom = Some(GradientGeom { start: centre, end: centre + vectorcraft_geom::Vec2::new(radius, 0.0), aspect: 1.0, focal: None });
Paint::Gradient(Box::new(g))
};
let circle = |centre: Point, radius: f64| shapes::ellipse(Rect::from_center_size(centre, (radius * 2.0, radius * 2.0)));