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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) allVectors.append(contourVectors)
for contour in contourPens: for contour in contourPens:
stats = GlyphStatistics(contour, glyphset=glyphset) stats = GlyphStatistics(contour, glyphset=glyphset)
size = abs(stats.Area) ** .5 * .5 size = abs(stats.area) ** .5 * .5
vector = ( vector = (
int(size), int(size),
int(stats.MeanX), int(stats.meanX),
int(stats.MeanY), int(stats.meanY),
int(stats.StdDevX * 2), int(stats.stddevX * 2),
int(stats.StdDevY * 2), int(stats.stddevY * 2),
int(stats.Correlation * size), int(stats.correlation * size),
) )
contourVectors.append(vector) contourVectors.append(vector)
#print(vector) #print(vector)

67
Snippets/symfont.py
View File

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