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Support linestyle='none' in Patch #18633

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Merged
jklymak merged 2 commits into from
Oct 2, 2020
Merged

Support linestyle='none' in Patch #18633

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2be931b
Patch now support the "None" linestyle
Rezangyal Dec 19, 2015
ea6ca1a
Add a test for Patch accepting 'none' linestyle.
QuLogic Oct 2, 2020
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8 changes: 7 additions & 1 deletion lib/matplotlib/patches.py
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Original file line number Diff line number Diff line change
Expand Up @@ -409,6 +409,10 @@ def set_linestyle(self, ls):
``'--'`` or ``'dashed'`` dashed line
``'-.'`` or ``'dashdot'`` dash-dotted line
``':'`` or ``'dotted'`` dotted line
``'None'`` draw nothing
``'none'`` draw nothing
``' '`` draw nothing
``''`` draw nothing
=========================== =================

Alternatively a dash tuple of the following form can be provided::
Expand All @@ -424,6 +428,8 @@ def set_linestyle(self, ls):
"""
if ls is None:
ls = "solid"
if ls in [' ', '', 'none']:
ls = 'None'
self._linestyle = ls
# get the unscaled dash pattern
offset, ls = self._us_dashes = mlines._get_dash_pattern(ls)
Expand Down Expand Up @@ -540,7 +546,7 @@ def _bind_draw_path_function(self, renderer):
gc.set_foreground(self._edgecolor, isRGBA=True)

lw = self._linewidth
if self._edgecolor[3] == 0:
if self._edgecolor[3] == 0 or self._linestyle == 'None':
lw = 0
gc.set_linewidth(lw)
gc.set_dashes(self._dashoffset, self._dashes)
Expand Down
26 changes: 26 additions & 0 deletions lib/matplotlib/tests/test_patches.py
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Expand Up @@ -238,6 +238,32 @@ def test_patch_linestyle_accents():
fig.canvas.draw()


@check_figures_equal(extensions=['png'])
def test_patch_linestyle_none(fig_test, fig_ref):
circle = mpath.Path.unit_circle()

ax_test = fig_test.add_subplot()
ax_ref = fig_ref.add_subplot()
for i, ls in enumerate(['none', 'None', ' ', '']):
path = mpath.Path(circle.vertices + i, circle.codes)
patch = mpatches.PathPatch(path,
linewidth=3, linestyle=ls,
facecolor=(1, 0, 0),
edgecolor=(0, 0, 1))
ax_test.add_patch(patch)

patch = mpatches.PathPatch(path,
linewidth=3, linestyle='-',
facecolor=(1, 0, 0),
edgecolor='none')
ax_ref.add_patch(patch)

ax_test.set_xlim([-1, i + 1])
ax_test.set_ylim([-1, i + 1])
ax_ref.set_xlim([-1, i + 1])
ax_ref.set_ylim([-1, i + 1])


def test_wedge_movement():
param_dict = {'center': ((0, 0), (1, 1), 'set_center'),
'r': (5, 8, 'set_radius'),
Expand Down