A corner's radius was capped at half its shorter side whatever its neighbours did, so one corner of a 100 pt square rounded alone stopped at 50 pt. Each corner now rounds until its cut reaches the cuts its neighbours ask for: the whole side when the neighbour is square, halfway when both ask for more. The corner widget drag, the red limit outline and CSS border-radius export follow the same limit.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Live Corners cut a corner between a curve and another side with the handles of
the arc between straight sides. The curve has turned by the time the cut meets
it, so those handles reached past where the tangents at the cut's ends cross,
and from a middling radius on the cut bulged out of the shape or looped. Each
handle is now the share an arc takes of its tangent up to that crossing.
Corners between straight sides are cut as before.
A corner is now any anchor that isn't smooth where two sides meet at an
angle, straight or curved, as in Illustrator. The cut meets each side at
its setback measured along the curve, leaves both sides along their
tangents there, and each curved side is trimmed to what the cuts at its
ends leave of it. The largest radius is still the one taking the cut
halfway along the shorter side, measured along the curve. Corners
between straight sides draw exactly as before.
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>
Dylan M. Taylor