First try, drop `FastAppendCurve` inheritance from `pg.PlotCurveItem`
Tyler Goodlet
parent
28bf8853aa
commit
5800c10901
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@ -95,8 +95,7 @@ _line_styles: dict[str, int] = {
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}
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# TODO: got a feeling that dropping this inheritance gets us even more speedups
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class FastAppendCurve(pg.PlotCurveItem):
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class FastAppendCurve(pg.GraphicsObject):
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'''
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A faster, append friendly version of ``pyqtgraph.PlotCurveItem``
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built for real-time data updates.
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@ -111,7 +110,11 @@ class FastAppendCurve(pg.PlotCurveItem):
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'''
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def __init__(
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self,
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x: np.ndarray,
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y: np.ndarray,
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*args,
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step_mode: bool = False,
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color: str = 'default_lightest',
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fill_color: Optional[str] = None,
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@ -123,13 +126,19 @@ class FastAppendCurve(pg.PlotCurveItem):
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) -> None:
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# brutaaalll, see comments within..
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self.yData = y
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self.xData = x
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self._name = name
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self.path: Optional[QtGui.QPainterPath] = None
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# TODO: we can probably just dispense with the parent since
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# we're basically only using the pen setting now...
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super().__init__(*args, **kwargs)
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self._xrange: tuple[int, int] = self.dataBounds(ax=0)
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# self._xrange: tuple[int, int] = self.dataBounds(ax=0)
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self._xrange: Optional[tuple[int, int]] = None
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# self._last_draw = time.time()
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self._use_poly = use_polyline
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@ -143,7 +152,7 @@ class FastAppendCurve(pg.PlotCurveItem):
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if 'dash' in style:
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pen.setDashPattern([8, 3])
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self.setPen(pen)
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self._pen = pen
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# last segment is drawn in 2px thickness for emphasis
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# self.last_step_pen = pg.mkPen(hcolor(color), width=2)
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@ -156,7 +165,7 @@ class FastAppendCurve(pg.PlotCurveItem):
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self._step_mode: bool = step_mode
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# self._fill = True
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self.setBrush(hcolor(fill_color or color))
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self._brush = pg.functions.mkBrush(hcolor(fill_color or color))
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# TODO: one question still remaining is if this makes trasform
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# interactions slower (such as zooming) and if so maybe if/when
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@ -171,6 +180,8 @@ class FastAppendCurve(pg.PlotCurveItem):
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QGraphicsItem.DeviceCoordinateCache
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)
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self.update()
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def update_from_array(
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self,
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x: np.ndarray,
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@ -187,7 +198,11 @@ class FastAppendCurve(pg.PlotCurveItem):
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profiler = pg.debug.Profiler(disabled=not pg_profile_enabled())
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flip_cache = False
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istart, istop = self._xrange
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if self._xrange:
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istart, istop = self._xrange
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else:
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istart, istop = x[0], x[-1]
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# print(f"xrange: {self._xrange}")
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# compute the length diffs between the first/last index entry in
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@ -367,20 +382,19 @@ class FastAppendCurve(pg.PlotCurveItem):
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# XXX: seems to be needed to avoid artifacts (see above).
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self.setCacheMode(QGraphicsItem.DeviceCoordinateCache)
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# XXX: lol brutal, the internals of `CurvePoint` (inherited by
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# our `LineDot`) required ``.getData()`` to work..
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def getData(self):
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return self.xData, self.yData
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def clear(self):
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'''
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Clear internal graphics making object ready for full re-draw.
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'''
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# NOTE: original code from ``pg.PlotCurveItem``
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self.xData = None ## raw values
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self.xData = None
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self.yData = None
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self._renderSegmentList = None
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self.fillPath = None
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self._fillPathList = None
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self._mouseShape = None
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self._mouseBounds = None
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self._boundsCache = [None, None]
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# path reservation aware non-mem de-alloc cleaning
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if self.path:
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@ -460,19 +474,17 @@ class FastAppendCurve(pg.PlotCurveItem):
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self._step_mode
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and self._last_step_rect
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):
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brush = self.opts['brush']
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brush = self._brush
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# p.drawLines(*tuple(filter(bool, self._last_step_lines)))
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# p.drawRect(self._last_step_rect)
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p.fillRect(self._last_step_rect, brush)
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# p.drawPath(self.path)
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# profiler('.drawPath()')
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if self._last_line:
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p.setPen(self.last_step_pen)
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p.drawLine(self._last_line)
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profiler('.drawLine()')
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p.setPen(self.opts['pen'])
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p.setPen(self._pen)
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# else:
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if self._use_poly:
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@ -490,11 +502,3 @@ class FastAppendCurve(pg.PlotCurveItem):
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# if self._fill:
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# brush = self.opts['brush']
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# p.fillPath(self.path, brush)
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# now = time.time()
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# print(f'DRAW RATE {1/(now - self._last_draw)}')
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# self._last_draw = now
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# import time
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# _last_draw: float = time.time()
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