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[varLib] Round outline deltas using banker's round as well

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See https://github.com/fonttools/fonttools/pull/2214#issuecomment-790742479
This commit is contained in:
Behdad Esfahbod 2021-03-04 13:00:04 -07:00
parent 07a7dd3eb5
commit d56b844142
2 changed files with 4 additions and 3 deletions
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2
Lib/fontTools/misc/vector.py
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@ -71,7 +71,7 @@ class Vector(tuple):
def __neg__(self): def __neg__(self):
return self._unaryOp(operator.neg) return self._unaryOp(operator.neg)
def __round__(self): def __round__(self, *, round=round):
return self._unaryOp(round) return self._unaryOp(round)
def __eq__(self, other): def __eq__(self, other):

5
Lib/fontTools/varLib/__init__.py
View File

@ -34,6 +34,7 @@ from fontTools.varLib.mvar import MVAR_ENTRIES
from fontTools.varLib.iup import iup_delta_optimize from fontTools.varLib.iup import iup_delta_optimize
from fontTools.varLib.featureVars import addFeatureVariations from fontTools.varLib.featureVars import addFeatureVariations
from fontTools.designspaceLib import DesignSpaceDocument from fontTools.designspaceLib import DesignSpaceDocument
from functools import partial
from collections import OrderedDict, namedtuple from collections import OrderedDict, namedtuple
import os.path import os.path
import logging import logging
@ -253,7 +254,7 @@ def _add_gvar(font, masterModel, master_ttfs, tolerance=0.5, optimize=True):
# Update gvar # Update gvar
gvar.variations[glyph] = [] gvar.variations[glyph] = []
deltas = model.getDeltas(allCoords, round=round) # builtin round calls into GlyphCoordinates.__round__() deltas = model.getDeltas(allCoords, round=partial(GlyphCoordinates.__round__, round=round))
supports = model.supports supports = model.supports
assert len(deltas) == len(supports) assert len(deltas) == len(supports)
@ -363,7 +364,7 @@ def _merge_TTHinting(font, masterModel, master_ttfs):
return return
variations = [] variations = []
deltas, supports = masterModel.getDeltasAndSupports(all_cvs, round=round) # builtin round calls into Vector.__round__ deltas, supports = masterModel.getDeltasAndSupports(all_cvs, round=round) # builtin round calls into Vector.__round__, which uses builtin round as we like
for i,(delta,support) in enumerate(zip(deltas[1:], supports[1:])): for i,(delta,support) in enumerate(zip(deltas[1:], supports[1:])):
if all(v == 0 for v in delta): if all(v == 0 for v in delta):
continue continue