Curve fillLevel behaviour with enableExperimental #2878
Description
Short description
Are fill levels for PlotDataItems supposed to be supported while useOpenGL and enableExperimental are True?
A comment in another issue (#2257) mentions that fill levels are not supported while enableExperimental is False, but I observe the opposite.
Also, why does fill level support depend on enableExperimental, but FillBetweenItem objects are able to display whether enableExperimental is true or false?
Code to reproduce
The code below generates one curve with the fillLevel set and a FillBetweenItem using a different curve, so the two behaviours can be compared.
There is a button to toggle enableExperimental.
import pyqtgraph as pg
from pyqtgraph.Qt import QtWidgets
import numpy as np
pg.setConfigOptions(useOpenGL = True, enableExperimental = False)
app = pg.mkQApp('OpenGL / Experimental Test')
win = pg.GraphicsLayoutWidget(show = True, title = 'OpenGL / Experimental Test')
plot = win.addPlot(title = 'Sinusoidal')
x_data = np.linspace(-10, 10, 1000)
curve = plot.plot(x_data, np.sin(x_data), pen = 'green', fillLevel = 0, fillBrush = pg.mkBrush((150, 0, 200, 100)), name = 'Sinusoidal')
y_data = np.sin(x_data*2.0)
curve2 = plot.plot(x_data, y_data, pen = 'red', name = 'Sinusoidal 2')
filler = pg.FillBetweenItem(curve, curve2, brush = pg.mkBrush((200, 200, 0, 100)), pen = 'pink')
plot.addItem(filler)
button = QtWidgets.QPushButton('enableExperimental = False')
en_exp = False
def toggle_experimental():
global en_exp, button
en_exp = not en_exp
pg.setConfigOptions(enableExperimental = en_exp)
button.setText(f'enableExperimental = {en_exp}')
button.clicked.connect(toggle_experimental)
proxy = QtWidgets.QGraphicsProxyWidget()
proxy.setWidget(button)
win.addItem(plot, 0, 0)
win.addItem(proxy, 1, 0)
win.show()
pg.exec()Expected behavior
The curve with fillLevel set should be filled while enableExperimental = True.
Real behavior
The curve with fillLevel set is not filled while enableExperimental = True. Instead, it is filled while enableExperimental = False.
Tested environment(s)
- PyQtGraph version: 0.13.3
- Qt Python binding: PyQt6 6.5.3 Qt 6.5.3
- Python version: 3.11.1
- NumPy version: 1.24.3
- Operating system: Windows 10
- Installation method: pip