v4.2.1

Changes

• Changed: License updated from MIT to dual MIT OR Apache-2.0.
• Added: Integration tests.

v4.2.0

Changes

• Added OGC-valid output mode to split composite holes into valid contours.
• Added fixed-scale/grid_size float overlay support to make operations more stable and predictable.

v4.0.0

Added

• no_std support
  std math replaced with libm.

Modified

• Memory-efficient API
  FloatOverlay and Overlay use a reusable buffer to reduce allocation overhead, improving performance by 5–15% in repeated operations.
  OverlayGraph is now a reference view (no longer owns geometry data)

• Optional multithreading
  allow_multithreading is now an optional feature and disabled by default.

v3.3.0

Fixed

API Design: options were mistakenly present in both the constructor and the custom function. Now they are only in the constructor.

v3.2.0

Modified

Area type changed: usize -> u64
Using usize caused incorrect results on WebAssembly.

v3.1.1

Added

IntOverlayOptions: options for integer boolean operations.

• preserve_input_collinear: Preserve collinear points before operations.
• output_direction: Desired output winding order.
• preserve_output_collinear: Preserve collinear points after operations.
• min_output_area: Minimum area threshold for output contours.

OverlayOptions<T>: options for float boolean operations.

• preserve_input_collinear: Preserve collinear points before operations.
• output_direction: Desired output winding order.
• preserve_output_collinear: Preserve collinear points after operations.
• min_output_area: Minimum area threshold for output contours.
• pub clean_result: If true, the result will be cleaned from precision-related issues (moved from ContourFilter)

❌ Removed

ContourFilter<T>: Previously used for controlling output simplification and area threshold; now replaced by the more unified OverlayOptions.

3.0.1

Changed

Starting from this version:

• Outer contours are returned in counter-clockwise order
• Hole contours are in clockwise order

This aligns with the standard mathematical convention and improves compatibility with other geometry libraries.
Now it also can be adjustable with enum ContourDirection

API Cleanup

Advanced methods have been renamed for clarity and now use the *_custom suffix:

• overlay_custom
• extract_shapes_custom
• slice_custom_by
  ...and others

The slicing algorithm has been reworked and became more stable.

v2.0.0

Added

Buffering:

• Path offset.
• Polygon offset.

v1.10.0

Changed

• Snap by radius can now grow without limit.
• Enum Precision converted to struct.

Added

• New SimplifyShape API simplify_shape_with_solver which allow to set Solver.

v1.9.0

Added

Improved splitting logic for large datasets:

• Reworked fragment solver.
• Introduced a multithreaded solver, boosting performance up to 2x in some cases.

Removed

Deprecated f32/f64 API. Use the templated Float API instead.