b38e2bd8ac
plot_wireframe requires 2D arrays. In recent versions of matplotlib passing a 1D array fails with an error: https://stackoverflow.com/questions/47225830/axes3d-plot-wireframex-y-z-error https://github.com/matplotlib/matplotlib/pull/5166 https://github.com/matplotlib/matplotlib/issues/3116
119 lines
3.1 KiB
Python
119 lines
3.1 KiB
Python
"""Visualize DesignSpaceDocument and resulting VariationModel."""
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from __future__ import print_function, division, absolute_import
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from fontTools.misc.py23 import *
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from fontTools.varLib.models import VariationModel, supportScalar
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from fontTools.designspaceLib import DesignSpaceDocument
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from mpl_toolkits.mplot3d import axes3d
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from matplotlib import pyplot
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from itertools import cycle
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import math
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import logging
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import sys
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log = logging.getLogger(__name__)
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def stops(support, count=10):
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a,b,c = support
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return [a + (b - a) * i / count for i in range(count)] + \
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[b + (c - b) * i / count for i in range(count)] + \
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[c]
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def plotLocations(locations, axes, axis3D, **kwargs):
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for loc,color in zip(locations, cycle(pyplot.cm.Set1.colors)):
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axis3D.plot([loc.get(axes[0], 0)],
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[loc.get(axes[1], 0)],
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[1.],
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'o',
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color=color,
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**kwargs)
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def plotLocationsSurfaces(locations, fig, names=None, **kwargs):
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assert len(locations[0].keys()) == 2
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if names is None:
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names = ['']
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n = len(locations)
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cols = math.ceil(n**.5)
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rows = math.ceil(n / cols)
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model = VariationModel(locations)
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names = [names[model.reverseMapping[i]] for i in range(len(names))]
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ax1, ax2 = sorted(locations[0].keys())
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for i, (support,color, name) in enumerate(zip(model.supports, cycle(pyplot.cm.Set1.colors), cycle(names))):
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axis3D = fig.add_subplot(rows, cols, i + 1, projection='3d')
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axis3D.set_title(name)
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axis3D.set_xlabel(ax1)
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axis3D.set_ylabel(ax2)
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pyplot.xlim(-1.,+1.)
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pyplot.ylim(-1.,+1.)
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Xs = support.get(ax1, (-1.,0.,+1.))
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Ys = support.get(ax2, (-1.,0.,+1.))
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for x in stops(Xs):
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X, Y, Z = [], [], []
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for y in Ys:
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z = supportScalar({ax1:x, ax2:y}, support)
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X.append(x)
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Y.append(y)
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Z.append(z)
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axis3D.plot(X, Y, Z, color=color, **kwargs)
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for y in stops(Ys):
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X, Y, Z = [], [], []
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for x in Xs:
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z = supportScalar({ax1:x, ax2:y}, support)
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X.append(x)
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Y.append(y)
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Z.append(z)
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axis3D.plot(X, Y, Z, color=color, **kwargs)
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plotLocations(model.locations, [ax1, ax2], axis3D)
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def plotDocument(doc, fig, **kwargs):
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doc.normalize()
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locations = [s.location for s in doc.sources]
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names = [s.name for s in doc.sources]
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plotLocationsSurfaces(locations, fig, names, **kwargs)
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def main(args=None):
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from fontTools import configLogger
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if args is None:
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args = sys.argv[1:]
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# configure the library logger (for >= WARNING)
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configLogger()
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# comment this out to enable debug messages from logger
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# log.setLevel(logging.DEBUG)
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if len(args) < 1:
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print("usage: fonttools varLib.plot source.designspace", file=sys.stderr)
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print(" or")
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print("usage: fonttools varLib.plot location1 location2 ...", file=sys.stderr)
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sys.exit(1)
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fig = pyplot.figure()
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if len(args) == 1 and args[0].endswith('.designspace'):
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doc = DesignSpaceDocument()
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doc.read(args[0])
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plotDocument(doc, fig)
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else:
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axes = [chr(c) for c in range(ord('A'), ord('Z')+1)]
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locs = [dict(zip(axes, (float(v) for v in s.split(',')))) for s in args]
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plotLocationsSurfaces(locs, fig)
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pyplot.show()
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if __name__ == '__main__':
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import sys
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sys.exit(main())
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