1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
from fontTools.misc.roundTools import noRound, 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. For
rounding the component transform values, a separate round function can be passed to
the pen.
>>> 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, transformRoundFunc=noRound):
super().__init__(outPen)
self.roundFunc = roundFunc
self.transformRoundFunc = transformRoundFunc
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):
xx, xy, yx, yy, dx, dy = transformation
self._outPen.addComponent(
glyphName,
Transform(
self.transformRoundFunc(xx),
self.transformRoundFunc(xy),
self.transformRoundFunc(yx),
self.transformRoundFunc(yy),
self.roundFunc(dx),
self.roundFunc(dy),
),
)
class RoundingPointPen(FilterPointPen):
"""
Filter point pen that rounds point coordinates and component XY offsets to integer.
For rounding the component scale values, a separate round function can be passed to
the pen.
>>> 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, transformRoundFunc=noRound):
super().__init__(outPen)
self.roundFunc = roundFunc
self.transformRoundFunc = transformRoundFunc
def addPoint(
self, pt, segmentType=None, smooth=False, name=None, identifier=None, **kwargs
):
self._outPen.addPoint(
(self.roundFunc(pt[0]), self.roundFunc(pt[1])),
segmentType=segmentType,
smooth=smooth,
name=name,
identifier=identifier,
**kwargs,
)
def addComponent(self, baseGlyphName, transformation, identifier=None, **kwargs):
xx, xy, yx, yy, dx, dy = transformation
self._outPen.addComponent(
baseGlyphName=baseGlyphName,
transformation=Transform(
self.transformRoundFunc(xx),
self.transformRoundFunc(xy),
self.transformRoundFunc(yx),
self.transformRoundFunc(yy),
self.roundFunc(dx),
self.roundFunc(dy),
),
identifier=identifier,
**kwargs,
)
|
