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Arrow head color fix to match arrow body #13742

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Arrow head color fix to match arrow body #13742

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72786d6
Fix for arrow heads issue #11759
raunM Mar 23, 2019
c7028d4
Fix for arrow heads issue
raunM Mar 23, 2019
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20 changes: 19 additions & 1 deletion lib/mpl_toolkits/mplot3d/axes3d.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2729,12 +2729,30 @@ def calc_arrow(uvw, angle=15):
# transpose to get a list of lines
heads = heads.swapaxes(0, 1)

lines = [*shafts, *heads]
# create seperate lists for lines, left arrow head lines,
# and right arrow head lines from the computed lines and
# heads to be used for generating gradients
lines = shafts
arrows1 = []
arrows2 = []
for a in range(len(heads)):
if a % 2 == 0:
arrows1.append(heads[a])
else:
arrows2.append(heads[a])
else:
arrows1 = []
arrows2 = []
lines = []

# generate 3D lines with gradient for body, left arrow head lines,
# and right arrow head lines
linec = art3d.Line3DCollection(lines, *args[argi:], **kwargs)
arrow1c = art3d.Line3DCollection(arrows1, *args[argi:], **kwargs)
arrow2c = art3d.Line3DCollection(arrows2, *args[argi:], **kwargs)
self.add_collection(linec)
self.add_collection(arrow1c)
self.add_collection(arrow2c)

self.auto_scale_xyz(XYZ[:, 0], XYZ[:, 1], XYZ[:, 2], had_data)

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