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[symfont] Rename

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This commit is contained in:
Behdad Esfahbod 2017-02-20 12:46:55 -06:00
parent 5132bbe411
commit c14aad81f4
2 changed files with 39 additions and 40 deletions
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12
Snippets/interpolatable.py
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@ -135,14 +135,14 @@ def test(glyphsets, glyphs=None, names=None):
allVectors.append(contourVectors)
for contour in contourPens:
stats = GlyphStatistics(contour, glyphset=glyphset)
size = abs(stats.Area) ** .5 * .5
size = abs(stats.area) ** .5 * .5
vector = (
int(size),
int(stats.MeanX),
int(stats.MeanY),
int(stats.StdDevX * 2),
int(stats.StdDevY * 2),
int(stats.Correlation * size),
int(stats.meanX),
int(stats.meanY),
int(stats.stddevX * 2),
int(stats.stddevY * 2),
int(stats.correlation * size),
)
contourVectors.append(vector)
#print(vector)

67
Snippets/symfont.py
View File

@ -16,7 +16,6 @@ import math
from fontTools.pens.basePen import BasePen
from fontTools.pens.transformPen import TransformPen
from fontTools.pens.momentsPen import MomentsPen
from fontTools.pens.areaPen import AreaPen
from fontTools.misc.transform import Scale
from functools import partial
from itertools import count
@ -180,12 +179,12 @@ class GreenPen(BasePen):
p1 = self.__startPoint
self.value += self._funcs[1](p0[0],p0[1],p1[0],p1[1])
#AreaPen = partial(GreenPen, func=1)
Moment1XPen = partial(GreenPen, func=x)
Moment1YPen = partial(GreenPen, func=y)
Moment2XXPen = partial(GreenPen, func=x*x)
Moment2YYPen = partial(GreenPen, func=y*y)
Moment2XYPen = partial(GreenPen, func=x*y)
AreaPen = partial(GreenPen, func=1)
MomentXPen = partial(GreenPen, func=x)
MomentYPen = partial(GreenPen, func=y)
MomentXXPen = partial(GreenPen, func=x*x)
MomentYYPen = partial(GreenPen, func=y*y)
MomentXYPen = partial(GreenPen, func=x*y)
@ -207,47 +206,47 @@ class GlyphStatistics(object):
self._glyph.draw(transformer)
self.m = m = pen
self.Area = area = m.area
self.Moment1X = m.momentX
self.Moment1Y = m.momentY
self.Moment2XX = m.momentXX
self.Moment2XY = m.momentXY
self.Moment2YY = m.momentYY
self.area = area = m.area
self.momentX = m.momentX
self.momentY = m.momentY
self.momentXX = m.momentXX
self.momentXY = m.momentXY
self.momentYY = m.momentYY
if not area:
self.MeanX = 0.
self.MeanY = 0.
self.VarianceX = 0.
self.VarianceY = 0.
self.StdDevX = 0.
self.StdDevY = 0.
self.Covariance = 0.
self.Correlation = 0.
self.Slant = 0.
self.meanX = 0.
self.meanY = 0.
self.varianceX = 0.
self.varianceY = 0.
self.stddevX = 0.
self.stddevY = 0.
self.covariance = 0.
self.correlation = 0.
self.slant = 0.
return
# Center of mass
# https://en.wikipedia.org/wiki/Center_of_mass#A_continuous_volume
self.MeanX = self.Moment1X / area
self.MeanY = self.Moment1Y / area
self.meanX = self.momentX / area
self.meanY = self.momentY / area
# Var(X) = E[X^2] - E[X]^2
self.VarianceX = self.Moment2XX / area - self.MeanX**2
self.VarianceY = self.Moment2YY / area - self.MeanY**2
self.varianceX = self.momentXX / area - self.meanX**2
self.varianceY = self.momentYY / area - self.meanY**2
self.StdDevX = math.copysign(abs(self.VarianceX)**.5, self.VarianceX)
self.StdDevY = math.copysign(abs(self.VarianceY)**.5, self.VarianceY)
self.stddevX = math.copysign(abs(self.varianceX)**.5, self.varianceX)
self.stddevY = math.copysign(abs(self.varianceY)**.5, self.varianceY)
# Covariance(X,Y) = ( E[X.Y] - E[X]E[Y] )
self.Covariance = self.Moment2XY / area - self.MeanX*self.MeanY
self.covariance = self.momentXY / area - self.meanX*self.meanY
# Correlation(X,Y) = Covariance(X,Y) / ( StdDev(X) * StdDev(Y)) )
# Correlation(X,Y) = Covariance(X,Y) / ( stddev(X) * stddev(Y)) )
# https://en.wikipedia.org/wiki/Pearson_product-moment_correlation_coefficient
corr = self.Covariance / (self.StdDevX * self.StdDevY)
self.Correlation = corr if abs(corr) > 1e-3 else 0
correlation = self.covariance / (self.stddevX * self.stddevY)
self.correlation = correlation if abs(correlation) > 1e-3 else 0
slant = self.Covariance / self.VarianceY
self.Slant = slant if abs(slant) > 1e-3 else 0
slant = self.covariance / self.varianceY
self.slant = slant if abs(slant) > 1e-3 else 0
def test(glyphset, upem, glyphs):