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Commit13b4555

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Fix containment and subslice optim. for steps.
#6497 set the `_path` attribute of Line2D to the actually drawn patheven if the drawstyle is `steps-*`; however containment tests and thesubslice optimization for very long paths were not updated accordingly(see#6615). This patch fixes the issues.Note that `contains` returns, for events in a horizontal segment of a"steps-mid" drawstyle plot, the index of the point in the segment,regardless of whether the event occured to the left or the right ofthat point.
1 parent5de9c44 commit13b4555

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+7
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‎lib/matplotlib/lines.py

Lines changed: 7 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -479,6 +479,8 @@ def contains(self, mouseevent):
479479
else:
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# If line, return the nearby segment(s)
481481
ind=segment_hits(mouseevent.x,mouseevent.y,xt,yt,pixels)
482+
ifself._drawstyle.startswith("steps"):
483+
ind//=2
482484

483485
ind+=self.ind_offset
484486

@@ -680,7 +682,8 @@ def recache(self, always=False):
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else:
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interpolation_steps=1
682684
xy=STEP_LOOKUP_MAP[self._drawstyle](*self._xy.T)
683-
self._path=Path(np.asarray(xy).T,None,interpolation_steps)
685+
self._path=Path(np.asarray(xy).T,
686+
_interpolation_steps=interpolation_steps)
684687
self._transformed_path=None
685688
self._invalidx=False
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self._invalidy=False
@@ -693,8 +696,9 @@ def _transform_path(self, subslice=None):
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"""
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# Masked arrays are now handled by the Path class itself
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ifsubsliceisnotNone:
696-
_steps=self._path._interpolation_steps
697-
_path=Path(self._xy[subslice, :],_interpolation_steps=_steps)
699+
xy=STEP_LOOKUP_MAP[self._drawstyle](*self._xy[subslice, :].T)
700+
_path=Path(np.asarray(xy).T,
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_interpolation_steps=self._path._interpolation_steps)
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else:
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_path=self._path
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self._transformed_path=TransformedPath(_path,self.get_transform())

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