从QBufferDataGenerator继承

Question

首先我的设置是

python3

requirements.txt

PyQt5>=5.12
pyqt3d>=5.12
pyopengl

example.py

from PyQt5.QtCore import *
from PyQt5.Qt3DCore import *
from PyQt5.Qt3DRender import *

class SomeDataGenerator(QBufferDataGenerator):
    def __init__(self, some_bytes):
        super().__init__()
        self._bytes = some_bytes

    def __call__(self):
        return self._bytes

    def __eq__(self, other):
        return (self._bytes == other._bytes)

    def __neq__(self, other):
        return not (self._bytes == other._bytes)

    def id(self):
        return functorTypeId(SomeDataGenerator)


someBytes = QByteArray()
someBuffer = QBuffer(QBuffer.VertexBuffer)
someDataGenerator = SomeDataGenerator(someBytes)
someBuffer.setDataGenerator(someDataGenerator)

运行时输出：

$ python3 example.py
...
TypeError: PyQt5.Qt3DRender.QBufferDataGenerator cannot be instantiated or sub-classed

所以问题是我怎么打电话给QBuffer::setDataGenerator？

我想做的一件大事：通过Qt3D绑定用PyQt5绘制点或任何东西。