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[glyf] fix recalcBounds of transformed components with unrounded coordinates

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Fixes https://github.com/googlefonts/fontc/issues/1206
This commit is contained in:
Cosimo Lupo 2025-01-23 11:19:30 +00:00
parent 6ea7f5e2a6
commit ec5d41929f
1 changed files with 6 additions and 3 deletions
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9
Lib/fontTools/ttLib/tables/_g_l_y_f.py
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@ -1187,7 +1187,7 @@ class Glyph(object):
):
return
try:
coords, endPts, flags = self.getCoordinates(glyfTable)
coords, endPts, flags = self.getCoordinates(glyfTable, round=otRound)
self.xMin, self.yMin, self.xMax, self.yMax = coords.calcIntBounds()
except NotImplementedError:
pass
@ -1241,7 +1241,7 @@ class Glyph(object):
else:
return self.numberOfContours == -1
def getCoordinates(self, glyfTable):
def getCoordinates(self, glyfTable, round=noRound):
"""Return the coordinates, end points and flags
This method returns three values: A :py:class:`GlyphCoordinates` object,
@ -1267,13 +1267,16 @@ class Glyph(object):
for compo in self.components:
g = glyfTable[compo.glyphName]
try:
coordinates, endPts, flags = g.getCoordinates(glyfTable)
coordinates, endPts, flags = g.getCoordinates(
glyfTable, round=round
)
except RecursionError:
raise ttLib.TTLibError(
"glyph '%s' contains a recursive component reference"
% compo.glyphName
)
coordinates = GlyphCoordinates(coordinates)
coordinates.toInt(round=round)
if hasattr(compo, "firstPt"):
# component uses two reference points: we apply the transform _before_
# computing the offset between the points