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[varLib.avarPlanner] Add --samples

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This commit is contained in:
Behdad Esfahbod 2023-07-23 10:27:19 -06:00
parent ffc1cd4801
commit 758fbb7d74
1 changed files with 15 additions and 5 deletions
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20
Lib/fontTools/varLib/avarPlanner.py
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@ -58,8 +58,13 @@ def getGlyphsetBlackness(glyphset, frequencies=None):
def planWeightAxis(
font, minValue, defaultValue, maxValue, weights=WEIGHTS, frequencies=None
font, minValue, defaultValue, maxValue, weights=None, samples=None, frequencies=None
):
if weights is None:
weights = WEIGHTS
if samples is None:
samples = SAMPLES
log.info("Weight min %g / default %g / max %g", minValue, defaultValue, maxValue)
if "avar" in font:
@ -92,10 +97,10 @@ def planWeightAxis(
bias = -1 if extremeValue < defaultValue else 0
log.info("Planning target weights %s.", sorted(targetWeights))
log.info("Sampling %u points in range %g,%g.", SAMPLES, rangeMin, rangeMax)
log.info("Sampling %u points in range %g,%g.", samples, rangeMin, rangeMax)
weightBlackness = axisWeightAverage.copy()
for sample in range(1, SAMPLES + 1):
weight = rangeMin + (rangeMax - rangeMin) * sample / (SAMPLES + 1)
for sample in range(1, samples + 1):
weight = rangeMin + (rangeMax - rangeMin) * sample / (samples + 1)
log.info("Sampling weight %g.", weight)
glyphset = font.getGlyphSet(location={"wght": weight})
weightBlackness[weight] = getGlyphsetBlackness(glyphset, frequencies) / (
@ -151,6 +156,7 @@ def main(args=None):
description="Plan `avar` table for variable font",
)
parser.add_argument("font", metavar="font.ttf", help="Font file.")
parser.add_argument("-s", "--samples", type=int, help="Number of samples.")
parser.add_argument(
"-p", "--plot", action="store_true", help="Plot the resulting mapping."
)
@ -189,7 +195,11 @@ def main(args=None):
if wghtAxis:
out, outNormalized = planWeightAxis(
font, wghtAxis.minValue, wghtAxis.defaultValue, wghtAxis.maxValue
font,
wghtAxis.minValue,
wghtAxis.defaultValue,
wghtAxis.maxValue,
samples=options.samples,
)
if options.plot: