0.11.0

Python Changes

Packaging

• Explicit support for Python 3.8 has been added (#161). On Windows this required using the os.add_dll_directory() function to load bezier.dll (in earlier Python versions, the DLL directory was added by modifying %PATH%).

New Features

• Loosened type constraints in Curve constructor and Surface constructor; now any sequence type is accepted rather than only NumPy arrays (68f7dc7, a8c68a3, f5c7869). Fixed #146.
• Added copy and verify arguments to Curve constructor and Surface constructor (#163). Fixed #158.
• Added SymPy-based helpers for "exact" representations (#164). Fixed #157.
  • Curve.implicitize() function
  • Curve.to_symbolic() function
  • Surface.implicitize() function
  • Surface.to_symbolic() function

Internals

• Re-factored non-public modules so that algorithms implemented in pure Python only invoke other algorithms written in pure Python (#160). Previously these algorithms invoked the equivalent Fortran speedup if present for a given function. Fixed #159.

Miscellany

• Moved *.f90 Fortran files out of Python source tree (#152).

ABI Changes

Breaking Changes

• Added BEZ_ prefix for exported ABI names (#167). Fixed #166.

Additive Changes

• Changed all [in] arguments in C headers to const pointers (#169). Fixed #168.

Bug Fixes

• Explicitly handle length 0 curves (with an error) in the compute_length() Fortran subroutine that is used by the Curve.length property (a24368f). Fixed #148.
• Fixed high-degree error in the Curve.evaluate() method, via the evaluate_curve_barycentric() Fortran subroutine (5768824). Fixed #156. The code uses (n C (k + 1)) = (n - k) / (k + 1) (n C k) to update the value and (30 - 14) (30 C 14) overflows a 32-bit signed integer.

Documentation

• Updated install instructions to show how to disable the binary extension via BEZIER_NO_EXTENSION (6262594, 00c1e61). Fixed #147.
• Added "Citation" section to landing page (9885063). Fixed #150.