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Add `FastAppendCurve.draw_last()`

incremental_update_paths
Tyler Goodlet 2022-04-20 12:13:18 -04:00
parent 239c9d701a
commit 3dbce6f891
1 changed files with 24 additions and 17 deletions
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41
piker/ui/_curve.py
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@ -337,9 +337,6 @@ class FastAppendCurve(pg.GraphicsObject):
else: else:
self._xrange = x[0], x[-1] self._xrange = x[0], x[-1]
x_last = x[-1]
y_last = y[-1]
# check for downsampling conditions # check for downsampling conditions
if ( if (
# std m4 downsample conditions # std m4 downsample conditions
@ -498,7 +495,7 @@ class FastAppendCurve(pg.GraphicsObject):
finiteCheck=False, finiteCheck=False,
path=self.fast_path, path=self.fast_path,
) )
profiler(f'generated append qpath') profiler('generated append qpath')
if self.use_fpath: if self.use_fpath:
# an attempt at trying to make append-updates faster.. # an attempt at trying to make append-updates faster..
@ -537,6 +534,28 @@ class FastAppendCurve(pg.GraphicsObject):
# self.disable_cache() # self.disable_cache()
# flip_cache = True # flip_cache = True
self.draw_last(x, y)
profiler('draw last segment')
# trigger redraw of path
# do update before reverting to cache mode
# self.prepareGeometryChange()
self.update()
profiler('.update()')
# if flip_cache:
# # XXX: seems to be needed to avoid artifacts (see above).
# self.setCacheMode(QGraphicsItem.DeviceCoordinateCache)
def draw_last(
self,
x: np.ndarray,
y: np.ndarray,
) -> None:
x_last = x[-1]
y_last = y[-1]
# draw the "current" step graphic segment so it lines up with # draw the "current" step graphic segment so it lines up with
# the "middle" of the current (OHLC) sample. # the "middle" of the current (OHLC) sample.
if self._step_mode: if self._step_mode:
@ -556,21 +575,9 @@ class FastAppendCurve(pg.GraphicsObject):
else: else:
self._last_line = QLineF( self._last_line = QLineF(
x[-2], y[-2], x[-2], y[-2],
x[-1], y_last x_last, y_last
) )
profiler('draw last segment')
# trigger redraw of path
# do update before reverting to cache mode
# self.prepareGeometryChange()
self.update()
profiler('.update()')
# if flip_cache:
# # XXX: seems to be needed to avoid artifacts (see above).
# self.setCacheMode(QGraphicsItem.DeviceCoordinateCache)
# XXX: lol brutal, the internals of `CurvePoint` (inherited by # XXX: lol brutal, the internals of `CurvePoint` (inherited by
# our `LineDot`) required ``.getData()`` to work.. # our `LineDot`) required ``.getData()`` to work..
def getData(self): def getData(self):