kurbo

Crates.io | Docs

This release has an MSRV of 1.85.

Added

• Stroke::is_finite and Stroke::is_nan. (#545 by @waywardmonkeys)
• Component-wise Insets::min/max methods. (#548 by @xStrom)
• Ability to add and subtract Insets from other Insets. (#549 by @xStrom)
• Arc now implements ParamCurve. (#378 by @waywardmonkeys)
• Affine::{pre,then}_skew and Affine::{pre,then}_reflect fluent composition helpers. (#563 by @waywardmonkeys)
• Three transform matrix norms: Affine::{nuclear_norm_squared,frobenius_norm_squared,spectral_norm}. (#569 by @tomcur)
• StrokeOpts::stable_dash_order to keep dashes at fixed path-relative positions instead of merging the first/last dash across. (#550 by @RobertBrewitz)
• expand_path anisotropic path expansion. (#575 by @raphlinus)

Changed

• Improved performance of RoundedRect::winding and RoundedRect::contains. (#534 by @tomcur)
• Axis, Ellipse::from_affine, Insets, Line::reversed, Rect::min_x/max_x/min_y/max_y, RoundedRectRadii::abs/clamp/as_single_radius, RoundedRect::width/height/radii/rect/origin/center, Size::aspect_ratio, Stroke::new/with_join/with_miter_limit/with_start_cap/with_end_cap/with_caps are all now const. (#536 by @xStrom, #539 and #561 by @tomcur)
• Improved performance of Ellipse::area. Note: for non-finite ellipses, this method may now return f64::INFINITY where it returned f64::NAN before. (#559 by @tomcur)
• Improved numerical robustness of winding numbers for paths. (#537 by @jneem)

Fixed

• Affine::pre_rotate_about calculation. (#567 by @dannymcgee)
• Now closing subpaths when computing area for expansion. (#580 by @raphlinus)
• Odd-length dash patterns no longer swap dashes and gaps when dash_offset increases. (#585 by @Keavon)

New Contributors

• @ztaaha made their first contribution in #554
• @dannymcgee made their first contribution in #567
• @RobertBrewitz made their first contribution in #550
• @Keavon made their first contribution in #585

Full Changelog: v0.13.0...v0.13.1

This release has an [MSRV][] of 1.85.

Crates.io | Docs

This release has an MSRV of 1.85.

Added

• The newly added BezPath::into_elements method allows getting all path elements as a Vec without allocating, consuming the original path. This is the counterpart of BezPath::from_vec. (#504 by @cmyr)
• Add a derive Hash to the Axis type. (#527 by @jrmoulton)

Changed

• Speed up methods like Ellipse::radii by reworking the singular value decomposition expression. (#499 by @tomcur)
• The Line::nearest method to calculate the projection of a point onto a line segment has been made more performant. (#505 by @tomcur)
• The QuadBez::arclen calculation has been made more numerically stable (#503 by @jneem).
• SvgParseError now implements core::error:Error. It previously implemented std::error::Error in std-enabled builds. (#517 by @Bombaninha)
• The behavior of open versus closed shapes when using BezPath::extend (extending Bezier paths using an iterator over PathEl) has been clarified. #523 by @DJMcNab)
• More methods are marked inline. (#506 by @LaurenzV, #509 by @tomcur)

The following functions are now callable from const contexts. (#510, #512, #521, #522, #524, #525, #526 by @tomcur)

• Affine::{skew, then_translate, map_unit_square, as_coeffs, determinant, inverse, translation, with_translation}
• Point::midpoint
• Rect::{width, height, origin, size, area, is_zero_area, center, aspect_ratio_width, overlap, contains_rect, union, intersect, inscribed_rect_with_aspect_ratio, inflate, scale_from_origin, abs}
• Size::{max_side, min_side, area, is_zero_area, min, max, clamp, aspect_ratio_width}
• In addition, the is_finite and is_nan methods on the following types are now const: Affine, Circle, ConstPoint, CubicBez, Ellipse, Insets, Line, Point, QuadBez, Rect, RoundedRect, RoundedRectRadii, Size, Triangle, Vec2.

New Contributors

• @Bombaninha made their first contribution in #517
• @jrmoulton made their first contribution in #527

Full Changelog: v0.12.0...v0.13.0

This release has an [MSRV][] of 1.85.

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

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][])
• Axis type. ([#476][] by [@PoignardAzur][])
• 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][])
• Miter join in dashed strokes. ([#490][] by [@gemberg][])

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][])

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

This release has an [MSRV][] of 1.65.

Added

• current_position method to BezPath. ([#462][] by [@sagudev][])
• From conversions between euclid and kurbo types behind the euclid feature. ([#463][] by [@sagudev][])
• Green's theorem moments. ([#452][] by [@simoncozens][])
• Made 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][])
• Negative dash offset by normalization. ([#454][] by [@sagudev][])
• Now using exact endpoints for PathSeg. ([#465][] by [@jneem])

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

This release has an [MSRV][] of 1.65.

Added

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

Changed

• Reduced 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

• Documentation of Affine::svd. ([#388][] by [@tomcur][])
• Documentation of cross product. ([#409][] by [@raphlinus][])

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

This release has an [MSRV][] of 1.65.

Added

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

Changed

• Moved Self: Sized bound from Shape to methods. ([#340][] by [@waywardmonkeys][])
• Enabled partial SVG path support in no_std builds. ([#356][] by [@waywardmonkeys][])
• Deprecated 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][])

This release has an MSRV of 1.65.

Note: A changelog was not kept for or before this release

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