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[ufo] Allow input fonts with quadratic curves

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This commit is contained in:
James Godfrey-Kittle 2016-04-04 17:30:33 -07:00
parent 0ec7495516
commit 983307d9cd
1 changed files with 10 additions and 4 deletions
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14
Lib/cu2qu/ufo.py
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@ -45,26 +45,32 @@ def zip(*args):
class GetSegmentsPen(AbstractPen):
"""Pen to collect segments into lists of points for conversion."""
"""Pen to collect segments into lists of points for conversion.
Curves always include their initial on-curve point, so some points are
duplicated between segments.
"""
def __init__(self):
self._last_pt = None
self.segments = []
def _add_segment(self, tag, *args):
if tag in ['move', 'line', 'qcurve', 'curve']:
self._last_pt = args[-1]
self.segments.append((tag, args))
def moveTo(self, pt):
self._add_segment('move', pt)
self._last_pt = pt
def lineTo(self, pt):
self._add_segment('line', pt)
self._last_pt = pt
def qCurveTo(self, *points):
self._add_segment('qcurve', self._last_pt, *points)
def curveTo(self, *points):
self._add_segment('curve', self._last_pt, *points)
self._last_pt = points[-1]
def closePath(self):
self._add_segment('close')