QT3DCORE简单的线框查看器

Question

我正在学习Pyside6，我的目标是使用QT3DCore绘制一些3D线框实体（点，线，Bezier Curves .. Uso ..），在3D查看器中。我喜欢那个高级接口。

我使用了不错的基本圆环球示例（），并添加了一些qlinef行，但是我看不到观看器场景中的行。 我认为这是因为我没有此类线框实体的正确图形设置...但是我找不到有关该主题的其他示例或文档:-(

。我仅添加了只有2个修改的QT示例：Qline Import和第121行中的Qline语句：（

"""PySide6 port of the qt3d/simple-cpp example from Qt v5.x"""

import sys
from PySide6.QtCore import (Property, QObject, QPropertyAnimation, Signal,QPoint,QLine,QLineF)
from PySide6.QtGui import (QGuiApplication, QMatrix4x4, QQuaternion, QVector3D)
from PySide6.Qt3DCore import (Qt3DCore)
from PySide6.Qt3DExtras import (Qt3DExtras)
from PySide6.Qt3DRender import (Qt3DRender)

       
class OrbitTransformController(QObject):
    def __init__(self, parent):
        super().__init__(parent)
        self._target = None
        self._matrix = QMatrix4x4()
        self._radius = 1
        self._angle = 0

    def setTarget(self, t):
        self._target = t

    def getTarget(self):
        return self._target

    def setRadius(self, radius):
        if self._radius != radius:
            self._radius = radius
            self.updateMatrix()
            self.radiusChanged.emit()

    def getRadius(self):
        return self._radius

    def setAngle(self, angle):
        if self._angle != angle:
            self._angle = angle
            self.updateMatrix()
            self.angleChanged.emit()

    def getAngle(self):
        return self._angle

    def updateMatrix(self):
        self._matrix.setToIdentity()
        self._matrix.rotate(self._angle, QVector3D(0, 1, 0))
        self._matrix.translate(self._radius, 0, 0)
        if self._target is not None:
            self._target.setMatrix(self._matrix)

    angleChanged = Signal()
    radiusChanged = Signal()
    angle = Property(float, getAngle, setAngle, notify=angleChanged)
    radius = Property(float, getRadius, setRadius, notify=radiusChanged)


class Window(Qt3DExtras.Qt3DWindow):
    def __init__(self):
        super().__init__()

        # Camera
        self.camera().lens().setPerspectiveProjection(45, 16 / 9, 0.1, 1000)
        self.camera().setPosition(QVector3D(0, 0, 40))
        self.camera().setViewCenter(QVector3D(0, 0, 0))

        # For camera controls
        self.createScene()
        self.camController = Qt3DExtras.QOrbitCameraController(self.rootEntity)
        self.camController.setLinearSpeed(50)
        self.camController.setLookSpeed(180)
        self.camController.setCamera(self.camera())

        self.setRootEntity(self.rootEntity)

    def createScene(self):
        # Root entity
        self.rootEntity = Qt3DCore.QEntity()

        # Material
        self.material = Qt3DExtras.QPhongMaterial(self.rootEntity)

        # Torus
        self.torusEntity = Qt3DCore.QEntity(self.rootEntity)
        self.torusMesh = Qt3DExtras.QTorusMesh()
        self.torusMesh.setRadius(5)
        self.torusMesh.setMinorRadius(1)
        self.torusMesh.setRings(100)
        self.torusMesh.setSlices(20)
        

        self.torusTransform = Qt3DCore.QTransform()
        self.torusTransform.setScale3D(QVector3D(1.5, 1, 0.5))
        self.torusTransform.setRotation(QQuaternion.fromAxisAndAngle(QVector3D(1, 0, 0), 45))

        self.torusEntity.addComponent(self.torusMesh)
        self.torusEntity.addComponent(self.torusTransform)
        self.torusEntity.addComponent(self.material)

        # Sphere
        self.sphereEntity = Qt3DCore.QEntity(self.rootEntity)
        self.sphereMesh = Qt3DExtras.QSphereMesh()
        self.sphereMesh.setRadius(3)

        self.sphereTransform = Qt3DCore.QTransform()
        self.controller = OrbitTransformController(self.sphereTransform)
        self.controller.setTarget(self.sphereTransform)
        self.controller.setRadius(20)

        self.sphereRotateTransformAnimation = QPropertyAnimation(self.sphereTransform)
        self.sphereRotateTransformAnimation.setTargetObject(self.controller)
        self.sphereRotateTransformAnimation.setPropertyName(b"angle")
        self.sphereRotateTransformAnimation.setStartValue(0)
        self.sphereRotateTransformAnimation.setEndValue(360)
        self.sphereRotateTransformAnimation.setDuration(10000)
        self.sphereRotateTransformAnimation.setLoopCount(-1)
        self.sphereRotateTransformAnimation.start()

        self.sphereEntity.addComponent(self.sphereMesh)
        self.sphereEntity.addComponent(self.sphereTransform)
        self.sphereEntity.addComponent(self.material)

        self.lineEntity = QLineF(-2000.0, -2000.0, 2000.0, 2000.0)

if __name__ == '__main__':
    app = QGuiApplication(sys.argv)
    view = Window()
    view.show()
    sys.exit(app.exec

））