如何使用qt绘制3D立体图，并将特定的点实时显示在三维立体图上

对于使用Qt绘制3D立体图并将特定的点实时显示在三维立体图上，您可以使用Qt自带的3D绘图模块Qt3D，以及Qt Charts模块。以下是一个简单的示例：

import sys
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QGuiApplication
from PyQt5.Qt3DCore import QEntity, QTransform
from PyQt5.Qt3DExtras import Qt3DWindow, QSphereMesh, QCuboidMesh, QPhongMaterial, QOrbitCameraController
from PyQt5.QtCharts import QChart, QChartView, QScatterSeries
from PyQt5.QtWidgets import QWidget, QHBoxLayout, QVBoxLayout

class MainWindow(QWidget):
    def __init__(self):
        super().__init__()

        # 创建Qt3D窗口
        self.view = Qt3DWindow()
        self.view.defaultFrameGraph().setClearColor(Qt.gray)
        container = QWidget.createWindowContainer(self.view)

        # 创建QtCharts图表
        self.chart = QChart()
        self.chart.setTitle("3D Scatter Plot")
        self.series = QScatterSeries()
        self.series.setName("Points")
        self.chart.addSeries(self.series)
        self.chart.createDefaultAxes()
        chart_view = QChartView(self.chart)
        chart_view.setRenderHint(QGuiApplication.Antialiasing)

        # 布局
        layout = QHBoxLayout()
        layout.addWidget(container)
        layout.addWidget(chart_view)
        self.setLayout(layout)

        # 创建3D实体和材料
        entity = QEntity(self.view.scene())
        self.sphere = QSphereMesh()
        self.sphereMeshTransform = QTransform()
        self.sphereMeshTransform.setScale3D(Qt.vector3D(0.1, 0.1, 0.1))
        self.sphereTransform = QTransform()
        self.sphereMaterial = QPhongMaterial(entity)

        # 创建立方体实体和材料
        self.cuboid = QCuboidMesh()
        self.cuboidMaterial = QPhongMaterial(entity)

        # 创建相机控制器
        cam_controller = QOrbitCameraController(entity)
        cam_controller.setLinearSpeed(50.0)
        cam_controller.setLookSpeed(180.0)

        # 添加点方法
        def add_point(x, y, z):
            self.series.append(x, y, z)
            sphere_entity = QEntity(entity)
            sphere_entity.addComponent(self.sphere)
            sphere_entity.addComponent(self.sphereMaterial)
            sphere_entity.addComponent(self.sphereMeshTransform)
            sphere_entity.addComponent(self.sphereTransform)
            self.sphereTransform.setTranslation(Qt.vector3D(x, y, z))
            cuboid_entity = QEntity(entity)
            cuboid_entity.addComponent(self.cuboid)
            cuboid_entity.addComponent(self.cuboidMaterial)
            cuboid_entity.addComponent(self.sphereMeshTransform)
            cuboid_entity.addComponent(self.sphereTransform)
            self.sphereTransform.setTranslation(Qt.vector3D(x, y, z))

        # 添加点
        add_point(0, 0, 0)
        add_point(1, 1, 1)
        add_point(2, 2, 2)

        # 显示窗口
        self.view.setRootEntity(entity)
        self.view.registerAspect(cam_controller)
        self.setWindowTitle("3D Scatter Plot")
        self.setGeometry(100, 100, 800, 600)
        self.show()

if __name__ == '__main__':
    app = QGuiApplication(sys.argv)
    main_window = MainWindow()
    sys.exit(app.exec_())

这个示例程序会创建一个包含3D立体图和QtCharts图表的窗口。添加点的方法`add_point()`可以根据需要修改，将需要实时显示的点添加到3D立体图和QtCharts图表中。希望这可以帮助您实现您的需求。