Segmentation fault on Mac with PyQt5

[MrCheatak]

Segmentation fault on Mac with PyQt5

[larsoner]

You haven't used pyvistaqt at all to do this plotting but rather pyvista. So this is either a pyvista bug or -- I would probably argue -- a usage bug where if you want to use pyvista + Qt you should use pyvistaqt.BackgroundPlotter not pyvista.Plotter. Can you try incorporating BackgroundPlotter and adding your sphere to it instead of using pv.Sphere.plot() (which will create a pyvista.Plotter)?

[MrCheatak]

I have managed to incorporate BackgroundPlotter like it is shown below.
Although, does it mean that the pyvista + Qt support is dropped?

  import sys
  import pyvista as pv
  import pyvistaqt as pvqt
  import numpy as np
  
  from PyQt5.QtWidgets import QApplication, QMainWindow, QPushButton
  
  
  class MainWindow(QMainWindow):
      def __init__(self):
          super().__init__()
  
          self.setWindowTitle("My App")
          self.button1 = QPushButton("Press Me!")
  
          # Set the central widget of the Window.
          self.setCentralWidget(self.button1)
  
          self.button1.clicked.connect(self.show_pvqt)
  
      def show_pvqt(self):
          plotter = self.plotter = pvqt.BackgroundPlotter()
          sphere = pv.Sphere()
  
          # Create a plotter window
          self.mesh = plotter.add_mesh(sphere, show_edges=True, name='sphere')
  
          # Customize the color map
          plotter.add_scalar_bar(title="Color Map")
          plotter.add_callback(self.change_color, 100)
  
          # Display the plotter window
          plotter.show()
          x = 0
          return 1
  
      def change_color(self):
          self.plotter.remove_actor('sphere')
          sphere = pv.Sphere()
          colors = np.random.rand(sphere.n_points, 3)
          self.mesh = self.plotter.add_mesh(sphere, scalars=colors, show_edges=True, name='sphere')
          self.plotter.update()
  
  
  app = QApplication(sys.argv)
  window = MainWindow()
  window.show()
  app.exec()