Crates.io | Docs

This release has an MSRV of 1.85.
It is the first release since polycool was transferred to the Linebender organization.

Changed

• Rename Poly::magnitude to Poly::max_abs_coefficient. (#502 by @jneem)

Fixed

• Avoid potential underflow in DynPoly::deriv (#502 by @jneem)
• Avoid NaN during Newton iteration (#502 by @jneem)

Note: A changelog was not kept before this release

Full Changelog: v0.12.0...polycool-v0.4.0

Crates.io | Docs

This release has an MSRV of 1.82. It was increased to support floating point math in const functions.

Added

• Newly public StrokeCtx allows for reusing allocations when stroking multiple paths. (#475 by @LaurenzV)
• New Axis type. (#476 by @PoignardAzur)
• Add Ellipse::major_radius and Ellipse::minor_radius methods. (#497 by @tomcur)

Changed

• The implementation of stroking is much faster. (#427 by @raphlinus)
• More Vec2 methods can now be called in const contexts. (#479 by @tomcur)
• aspect_ratio on Rect and Size has been deprecated and replaced with aspect_ratio_width.
  This is because the implementation of aspect_ratio used the ratio of height to width, whereas
  aspect rations are otherwise always ratios of width to height. (#486 by @ErisianArchitect and @DJMcNab)
• Deprecated contained_rect_with_aspect_ratio, replaced with inscribed_rect_with_aspect_ratio, which
  incidentally also uses the usual definition of aspect ratio (where the old name didn't). (#486 by @DJMcNab)
• Breaking change: The deprecated offset::CubicOffset has been removed, and replaced by
  offset::offset_cubic. (#489 by @jneem)
• Several methods marked #[inline]. (#472, #480, #496 by @tomcur)

Fixed

• Improved cubic to quadratic conversion handling for degenerate cubic curves with 3-4 consecutive equal control points. The approximation now correctly handles edge cases where cubics degenerate to lines or single points, matching fonttools' cu2qu behavior. (#485 by @anthrotype)
• Fix miter join in dashed strokes. (#490 by @grebmeg)

Removed

• Breaking change: DashIterator has been removed. Replace DashIterator::new with dash. (#488 by @DJMcNab)
• Breaking change: The previously deprecated BezPath::flatten, Ellipse::[with_]x_rotation, {Rect, Size}::is_empty, Shape::[in]to_bez_path,
  and TranslateScale::as_tuple have been removed. (#487 by @DJMcNab)

New Contributors

• @PoignardAzur made their first contribution in #476
• @grebmeg made their first contribution in #490

Full Changelog: v0.11.3...v0.12.0

Crates.io | Docs

This release has an MSRV of 1.65.

Added

• Add current_position method to BezPath. (#462 by @sagudev)
• Add From conversions between euclid and kurbo types behind the euclid feature. (#463 by @sagudev)
• Add Green's theorem moments. (#452 by @simoncozens)
• Make Vec2::splat public. (#469 by @xorgy)

Changed

• Let more methods take Into<Point> instead of Point. (#466 by @sagudev)

  Note: this can impact type inference.

• Inline the Mul<PathEl> implementation for Affine. (#461 by @LaurenzV)

• Inline the next method of the ToQuads iterator. (#460 by @LaurenzV)

• Avoid calling f64::hypot, as it calls a slow library function. (#448 by @beholdnec, #451 by @raphlinus)

Fixed

• Documentation of RoundedRect no longer incorrectly specifies the corner radii are equal. (#447 by @tomcur)
• Fixed negative dash offset by normalization. (#454 by @sagudev)
• Use exact endpoints for PathSeg. (#465 by @jneem)

New Contributors

• @beholdnec made their first contribution in #448
• @sagudev made their first contribution in #454

Full Changelog: v0.11.2...v0.11.3

0.11.2 (2025-04-28)

This release has an MSRV of 1.65.

Added

• Stroke is now PartialEq, StrokeOpts is now Clone, Copy, Debug, Eq, PartialEq. (#379 by @waywardmonkeys)
• Implement Sum for Vec2. (#399 by @Philipp-M)
• Add triangle shape. (#350 by @juliapaci, #387 by @tomcur)
• Implement Div<f64> and Mul<f64> for Insets. (#384 by @liferooter)
• Add Vec2::turn_90 and Vec2::rotate_scale methods (#409 by @raphlinus)
• Add min and max methods to Size. (#412 by @nils-mathieu)
• Add an INFNITY constant to Size. (#413 by @nils-mathieu)
• Add BezPath::with_capacity method (#418 by @LaurenzV)
• Add Affine::scale_about and Affine::then_scale_about. (#429 by @xorgy)

Changed

• Reduce number of operations in Triangle::circumscribed_circle. (#390 by @tomcur)
• Numerically approximate ellipse perimeter. (#383, #407 by @tomcur)
• Always inline trivial casts, splats, and swizzles. (#428 by @xorgy)

Fixed

• Fix documentation of Affine::svd. (#388 by @tomcur)
• Fix documentation of cross product. (#409 by @raphlinus)

New Contributors

• @juliapaci made their first contribution in #350
• @tomcur made their first contribution in #383
• @Philipp-M made their first contribution in #399
• @liferooter made their first contribution in #384
• @LaurenzV made their first contribution in #418
• @xorgy made their first contribution in #429

Full Changelog: v0.11.1...v0.11.2

0.11.1 (2024-09-12)

This release has an MSRV of 1.65.

Added

• Add From (f32, f32) for Point. (#339 by @rsheeter)
• Add Rect::overlaps and Rect::contains_rect. (#347 by @nils-mathieu)
• Add CubicBez::tangents (#288 by @raphlinus)
• Add Arc::reversed. (#367 by @waywardmonkeys)
• Add CircleSegment::inner_arc and CircleSegment::outer_arc (#368 by @waywardmonkeys)
• Add Rect::is_zero_area and Size::is_zero_area and deprecate their is_empty methods. (#370 by @waywardmonkeys)
• Add Line::reversed and Line::midpoint. (#375 by @waywardmonkeys)
• Allow construction of Line from (Point, Point) and (Point, Vec2). (#376 by @waywardmonkeys)

Changed

• Move Self: Sized bound from Shape to methods. (#340 by @waywardmonkeys)
• Enable partial SVG path support in no_std builds. (#356 by @waywardmonkeys)
• Deprecate BezPath::flatten, prefer flatten. (#361 by @waywardmonkeys)

Fixed

• An edge case in mindist was fixed. (#334 by @platlas)
• Allow lines in simplify input. (#343 by @raphlinus)
• Don't skip first dash in dash pattern. (#353 by @dominikh)
• Documentation for Arc.perimeter was corrected. (#354 by @simoncozens)
• Parsing scientific notation in an SVG path was fixed. (#365 by @GabrielDertoni)

New Contributors

• @nils-mathieu made their first contribution in #347
• @GabrielDertoni made their first contribution in #365
• @dominikh made their first contribution in #353

Full Changelog: v0.11.0...v0.11.1