| from fontTools.misc.roundTools import otRound |
| from fontTools.misc.transform import Transform |
| from fontTools.pens.filterPen import FilterPen, FilterPointPen |
| |
| |
| __all__ = ["RoundingPen", "RoundingPointPen"] |
| |
| |
| class RoundingPen(FilterPen): |
| """ |
| Filter pen that rounds point coordinates and component XY offsets to integer. |
| |
| >>> from fontTools.pens.recordingPen import RecordingPen |
| >>> recpen = RecordingPen() |
| >>> roundpen = RoundingPen(recpen) |
| >>> roundpen.moveTo((0.4, 0.6)) |
| >>> roundpen.lineTo((1.6, 2.5)) |
| >>> roundpen.qCurveTo((2.4, 4.6), (3.3, 5.7), (4.9, 6.1)) |
| >>> roundpen.curveTo((6.4, 8.6), (7.3, 9.7), (8.9, 10.1)) |
| >>> roundpen.addComponent("a", (1.5, 0, 0, 1.5, 10.5, -10.5)) |
| >>> recpen.value == [ |
| ... ('moveTo', ((0, 1),)), |
| ... ('lineTo', ((2, 3),)), |
| ... ('qCurveTo', ((2, 5), (3, 6), (5, 6))), |
| ... ('curveTo', ((6, 9), (7, 10), (9, 10))), |
| ... ('addComponent', ('a', (1.5, 0, 0, 1.5, 11, -10))), |
| ... ] |
| True |
| """ |
| |
| def __init__(self, outPen, roundFunc=otRound): |
| super().__init__(outPen) |
| self.roundFunc = roundFunc |
| |
| def moveTo(self, pt): |
| self._outPen.moveTo((self.roundFunc(pt[0]), self.roundFunc(pt[1]))) |
| |
| def lineTo(self, pt): |
| self._outPen.lineTo((self.roundFunc(pt[0]), self.roundFunc(pt[1]))) |
| |
| def curveTo(self, *points): |
| self._outPen.curveTo( |
| *((self.roundFunc(x), self.roundFunc(y)) for x, y in points) |
| ) |
| |
| def qCurveTo(self, *points): |
| self._outPen.qCurveTo( |
| *((self.roundFunc(x), self.roundFunc(y)) for x, y in points) |
| ) |
| |
| def addComponent(self, glyphName, transformation): |
| self._outPen.addComponent( |
| glyphName, |
| Transform( |
| *transformation[:4], |
| self.roundFunc(transformation[4]), |
| self.roundFunc(transformation[5]), |
| ), |
| ) |
| |
| |
| class RoundingPointPen(FilterPointPen): |
| """ |
| Filter point pen that rounds point coordinates and component XY offsets to integer. |
| |
| >>> from fontTools.pens.recordingPen import RecordingPointPen |
| >>> recpen = RecordingPointPen() |
| >>> roundpen = RoundingPointPen(recpen) |
| >>> roundpen.beginPath() |
| >>> roundpen.addPoint((0.4, 0.6), 'line') |
| >>> roundpen.addPoint((1.6, 2.5), 'line') |
| >>> roundpen.addPoint((2.4, 4.6)) |
| >>> roundpen.addPoint((3.3, 5.7)) |
| >>> roundpen.addPoint((4.9, 6.1), 'qcurve') |
| >>> roundpen.endPath() |
| >>> roundpen.addComponent("a", (1.5, 0, 0, 1.5, 10.5, -10.5)) |
| >>> recpen.value == [ |
| ... ('beginPath', (), {}), |
| ... ('addPoint', ((0, 1), 'line', False, None), {}), |
| ... ('addPoint', ((2, 3), 'line', False, None), {}), |
| ... ('addPoint', ((2, 5), None, False, None), {}), |
| ... ('addPoint', ((3, 6), None, False, None), {}), |
| ... ('addPoint', ((5, 6), 'qcurve', False, None), {}), |
| ... ('endPath', (), {}), |
| ... ('addComponent', ('a', (1.5, 0, 0, 1.5, 11, -10)), {}), |
| ... ] |
| True |
| """ |
| |
| def __init__(self, outPen, roundFunc=otRound): |
| super().__init__(outPen) |
| self.roundFunc = roundFunc |
| |
| def addPoint(self, pt, segmentType=None, smooth=False, name=None, **kwargs): |
| self._outPen.addPoint( |
| (self.roundFunc(pt[0]), self.roundFunc(pt[1])), |
| segmentType=segmentType, |
| smooth=smooth, |
| name=name, |
| **kwargs, |
| ) |
| |
| def addComponent(self, baseGlyphName, transformation, **kwargs): |
| self._outPen.addComponent( |
| baseGlyphName, |
| Transform( |
| *transformation[:4], |
| self.roundFunc(transformation[4]), |
| self.roundFunc(transformation[5]), |
| ), |
| **kwargs, |
| ) |