extract the code from fixedToStr into its own function (defined in roundTools), to be used for serializing fractional F2Dot14 angles for COLRv1 PaintRotate etc.
See pull request: https://github.com/fonttools/fonttools/pull/2326
The new module `otlLib.optimize.gpos` provides `compact` functions that
can reduce the file size of GPOS PairPos lookups by splitting subtables
in a smart way to avoid storing zero-valued pairs.
The compaction methods are called from `otlLib.builder` and
`varLib.merger` so that static and variable fonts can benefit from the
optimization at compile time.
The new module `otlLib.optimize` is also executable, to allow running
the optimization on existing fonts.
The optimization is a trade-off because on the one hand it can reduce
significantly the byte size of the GPOS table (up to 50% in random
Google Fonts) but on the other hand it adds to the compilation time and
may make fonts very slightly bigger once compressed to WOFF2 (because
WOFF2 doesn't mind about zero values and compresses them very well).
As such, the optimization is off by default, and you can activate it by
providing the environment variable `FONTTOOLS_GPOS_COMPACT_MODE=5` for
example (values from 0 = off to 9 = max file size savings, but many more
subtables).
* Replaced all from ...py23 import * with explicit name imports, or removed completely when possible.
* Replaced tounicode() with tostr()
* Changed all BytesIO ans StringIO imports to from io import ..., replaced all UnicodeIO with StringIO.
* Replaced all unichr() with chr()
* Misc minor tweaks and fixes
* Revert most of "Use Vector in some places where it improves the clarity of the code (#2206)"
This reverts most of commit 0d3ce2cafc6f604fc46d4d3bfbab34a5bc59e27b.
* Use Vector in some places where it improves the clarity of the code
* add __all__ to vector.py
* turned some list comprehensions into generator expressions: there's no need for an intermediate list in these cases
* Add empty __slots__ to Vector, so we don't waste space on a __dict__.
* add some tests for segmentPointAtT
