See https://github.com/fonttools/fonttools/pull/2214#issuecomment-790742479
Good news: this reverted the one CFF test that needed its expectation to
change when I started this patchset. Bad news: it introduced a couple other
diffs to the same glyph of the same test, which is consistent with changing
the rounding from otRound to round3.
* Revert most of "Use Vector in some places where it improves the clarity of the code (#2206)"
This reverts most of commit 0d3ce2cafc6f604fc46d4d3bfbab34a5bc59e27b.
Reduces error.
The main varfont-builder now asks the model to do rounding, and asks
VariationStore to do no rounding, so we don't spend extra times rounding
multiple times (specially with the heavy otRound).
I *think* I got it all and right...
Fixes https://github.com/fonttools/fonttools/issues/2213
* 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
When a TTFont is loaded with lazy=True, the otTables are only loaded upon BaseTable.__getattr__
when the requested attribute is not found in the instance __dict__.
Since the Paint.Format enum was defined at class level, every Paint instance, even when loaded
lazily, will have a 'Format' attribute and the magic decompile-on-missing-attribute will not
trigger, since the class attribute will be returned when the instance is missing one.
For this reason, and to not add further special cases, it's better to simply move this Paint.Format
enum class outside to the module level scope, and rename it PaintFormat.
This adds an unbuildColrV1 which does the inverse of colorLib.builder.buildColrV1.
Takes a LayerV1List and BaseGlypV1List and returns a map of base glyphs to raw data structures (list, dict, float, str, etc.).
Useful not only for debugging purpose, but also for implementing COLRv1 subsetting (where we need to drop whole chunks of paints which may be reused by multiple glyphs).
