为什么 FirstPersonCameraController {camera: camera} 不能与 QML ApplicationWindow 一起使用？

Question

我正在 ApplicationWindow 中从 PyQT5 加载 QML 3D 场景。但是，我无法使用鼠标平移和旋转我的自定义模型。

import QtQuick.Controls 2.5
import QtQuick.Scene3D 2.12

import Qt3D.Core 2.12
import Qt3D.Render 2.12
import Qt3D.Input 2.12
import Qt3D.Extras 2.13

import QtQuick 2.12 as QQ2

ApplicationWindow{   

    Scene3D {
            id: scene3d
            anchors.fill: parent
            anchors.margins: 10
            focus: true
            aspects: "input"

            FirstPersonCameraController {
                            camera: camera
                            }

            Entity {
                id: sceneRoot


                Camera {
                    id: camera
                    projectionType: CameraLens.PerspectiveProjection
                    fieldOfView: 45
                    nearPlane : 0.1
                    farPlane : 1000.0
                    position: Qt.vector3d( 0.0, 0.0, 40.0 )
                    upVector: Qt.vector3d( 0.0, 1.0, 1.0 )
                    viewCenter: Qt.vector3d( 0.0, 0.0, 0.0 )


                    PointLight{
                        id:pl3

                        }
                }



                ObjectPicker{
                  id: spherePicker
                  onPressed:{
                     console.log("Sphere clicked")
                  }
            }
                components: [
                    RenderSettings {
                        activeFrameGraph: ForwardRenderer {
                            camera: camera
                            clearColor: "transparent"
                        }
                    },
                    InputSettings { }
                ]

                PhongMaterial {
                    id: material
                    diffuse:Qt.rgba(0.5,0.5,0,1)
                }



                 PointLight{
                    id:pl2

                    }

               Mesh {
                    id: esh
                    source: "egg1.obj"

                    }

                Transform {
                    id: torusTransform
                    scale3D: Qt.vector3d(5, 5, 5)
                    rotation: fromAxisAndAngle(Qt.vector3d(1, 1, 0), 45)
                }

                Entity {
                    id: torusEntity
                    components: [ esh, material, torusTransform,spherePicker ]
                }

            }
        }


}

模型加载正确，只是我无法用鼠标控制它的旋转。

我认为这与 "FirstPersonCameraController"

有关

Answer 1

我目前无法自行验证这一点，但我假设您必须将 FirstPersonCameraController 移动到名为 sceneRoot.

的根实体中

现在它是 Scene3D 的子项。尝试将其移动到 Camera 节点下方，看看是否可行。

顺便说一句：我假设你的意思是你无法控制相机，而当你说

时，这就是你想要的

The model loads correctly just that I am not able to control it's rotation wit the mouse.

Answer 2

这是我目前用于旋转和平移对象的工作。 `

Scene3D
{
id:myScene3d

property int rotX:0
property int rotY:0
property int rotZ:0`

Entity
{

    id: sceneRoot


    Camera
    {
        id: camera
        projectionType: CameraLens.PerspectiveProjection
        fieldOfView: 2
        aspectRatio: 16/9
        nearPlane : 0.1
        farPlane : 20.0
        position: Qt.vector3d(posX,posY,posZ)
        upVector: Qt.vector3d( 0.0, 1.0, 0.0 )
        viewCenter: Qt.vector3d( 0.0, 0.0, 0.0 )                                  
    }

    FirstPersonCameraController
    {
        camera: camera
        linearSpeed: 1.0
        acceleration: 0.1
        deceleration: 1.0
    }


        Entity
    {
        id: monkeyEntity
        components: [
            SceneLoader
            {
                id: sceneLoader
            },
            Transform
            {

                rotationX  :   rotX
                rotationY  :   rotY
                rotationZ  :   rotZ
            },

            ObjectPicker
            {
                onPressed: {
                    console.log("Object clicked! Pressed at world-intersection: ", pick.worldIntersection)
                    console.log("Triangle index: ", pick.triangleIndex)
                }
            }

        ]

如您所见，rotX、rotY 和 rotZ 从场景外部用作属性。然后我只是在 MouseX 和 MouseY 值上使用了 case 语句。我希望你明白了。 }

为什么 FirstPersonCameraController {camera: camera} 不能与 QML ApplicationWindow 一起使用？

why FirstPersonCameraController {camera: camera } not working with QML ApplicationWindow?

python

pyqt

qml

qt3d

pyqt5