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have dropImpliedOnCurvePoints return the set of point indices useful for testing

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Cosimo Lupo 2023-06-01 18:21:59 +01:00
parent e19871981d
commit 3b62811b63
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1 changed files with 12 additions and 1 deletions
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13
Lib/fontTools/ttLib/tables/_g_l_y_f.py
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@ -28,6 +28,7 @@ from fontTools.misc import xmlWriter
from fontTools.misc.filenames import userNameToFileName from fontTools.misc.filenames import userNameToFileName
from fontTools.misc.loggingTools import deprecateFunction from fontTools.misc.loggingTools import deprecateFunction
from enum import IntFlag from enum import IntFlag
from typing import Set
log = logging.getLogger(__name__) log = logging.getLogger(__name__)
@ -1531,7 +1532,7 @@ class Glyph(object):
return result if result is NotImplemented else not result return result if result is NotImplemented else not result
def dropImpliedOnCurvePoints(*interpolatable_glyphs: Glyph) -> None: def dropImpliedOnCurvePoints(*interpolatable_glyphs: Glyph) -> Set[int]:
"""Drop impliable on-curve points from the (simple) glyph or glyphs. """Drop impliable on-curve points from the (simple) glyph or glyphs.
In TrueType glyf outlines, on-curve points can be implied when they are located at In TrueType glyf outlines, on-curve points can be implied when they are located at
@ -1542,9 +1543,17 @@ def dropImpliedOnCurvePoints(*interpolatable_glyphs: Glyph) -> None:
for all of them will actually be implied. for all of them will actually be implied.
The input glyph(s) is/are modified in-place. The input glyph(s) is/are modified in-place.
Args:
interpolatable_glyphs: The glyph or glyphs to modify in-place.
Returns:
The set of point indices that were dropped if any.
Reference: Reference:
https://developer.apple.com/fonts/TrueType-Reference-Manual/RM01/Chap1.html https://developer.apple.com/fonts/TrueType-Reference-Manual/RM01/Chap1.html
""" """
assert len(interpolatable_glyphs) > 0
drop = None drop = None
for glyph in interpolatable_glyphs: for glyph in interpolatable_glyphs:
may_drop = set() may_drop = set()
@ -1599,6 +1608,8 @@ def dropImpliedOnCurvePoints(*interpolatable_glyphs: Glyph) -> None:
i += 1 i += 1
glyph.endPtsOfContours = newEndPts glyph.endPtsOfContours = newEndPts
return drop
class GlyphComponent(object): class GlyphComponent(object):
"""Represents a component within a composite glyph. """Represents a component within a composite glyph.