Qt 3D使用攻略(5)-画3D的圆环、圆锥、圆筒、立方体、平面、球体

清疚 2022-09-02 01:14 33阅读 0赞

# 1.画3D的圆环 #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2pvbGluNjc4_size_16_color_FFFFFF_t_70][]

#include <QtCore/QObject>
    #include <QGuiApplication>
    
    #include <Qt3DRender/qcamera.h>
    #include <Qt3DCore/qentity.h>
    #include <Qt3DRender/qcameralens.h>
    
    #include <QtWidgets/QApplication>
    #include <QtWidgets/QWidget>
    #include <QtWidgets/QHBoxLayout>
    #include <QtWidgets/QCheckBox>
    #include <QtWidgets/QCommandLinkButton>
    #include <QtGui/QScreen>
    
    #include <Qt3DInput/QInputAspect>
    
    #include <Qt3DExtras/qtorusmesh.h>
    #include <Qt3DRender/qmesh.h>
    #include <Qt3DRender/qtechnique.h>
    #include <Qt3DRender/qmaterial.h>
    #include <Qt3DRender/qeffect.h>
    #include <Qt3DRender/qtexture.h>
    #include <Qt3DRender/qrenderpass.h>
    #include <Qt3DRender/qsceneloader.h>
    #include <Qt3DRender/qpointlight.h>
    
    #include <Qt3DCore/qtransform.h>
    #include <Qt3DCore/qaspectengine.h>
    
    #include <Qt3DRender/qrenderaspect.h>
    #include <Qt3DExtras/qforwardrenderer.h>
    
    #include <Qt3DExtras/qt3dwindow.h>
    #include <Qt3DExtras/qfirstpersoncameracontroller.h>
    #include <Qt3DExtras/QPhongMaterial>
    
    int main(int argc, char **argv)
    {
        QApplication app(argc, argv);
        Qt3DExtras::Qt3DWindow *view = new Qt3DExtras::Qt3DWindow();
        view->defaultFrameGraph()->setClearColor(QColor(QRgb(0xFFFFFF)));//设置视图背景色
        QWidget *widget = QWidget::createWindowContainer(view);
        QSize screenSize = view->screen()->size();
        widget->setMinimumSize(QSize(200, 100));
        widget->setMaximumSize(screenSize);
        widget->setWindowTitle(QStringLiteral("Basic shapes"));
    
        // 根实体
        Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();
        view->setRootEntity(rootEntity);
    
        Qt3DInput::QInputAspect *input = new Qt3DInput::QInputAspect;
        view->registerAspect(input);
    
        // 相机
        Qt3DRender::QCamera *cameraEntity = view->camera();
        cameraEntity->lens()->setPerspectiveProjection(45.0f, 16.0f / 9.0f, 0.1f, 1000.0f);
        cameraEntity->setPosition(QVector3D(0, 0, 20.0f));
        cameraEntity->setUpVector(QVector3D(0, 1, 0));
        cameraEntity->setViewCenter(QVector3D(0, 0, 0));
    
        //高光控制
        Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(rootEntity);
        Qt3DRender::QPointLight *light = new Qt3DRender::QPointLight(lightEntity);
        light->setColor("white");
        light->setIntensity(1);
        lightEntity->addComponent(light);
        Qt3DCore::QTransform *lightTransform = new Qt3DCore::QTransform(lightEntity);
        lightTransform->setTranslation(cameraEntity->position());
        lightEntity->addComponent(lightTransform);
    
        // 相机控制
        Qt3DExtras::QFirstPersonCameraController *camController = new Qt3DExtras::QFirstPersonCameraController(rootEntity);
        camController->setCamera(cameraEntity);
    
        Qt3DExtras::QTorusMesh *m_torus = new Qt3DExtras::QTorusMesh();
        m_torus->setRadius(1.0f); //环面的外半径
        m_torus->setMinorRadius(0.4f);//环面的内半径
        m_torus->setRings(100);//网格中的环数
        m_torus->setSlices(20);//网格中的切片数
    
        //环状网变换
        Qt3DCore::QTransform *torusTransform = new Qt3DCore::QTransform();
        torusTransform->setScale(2.0f);//缩放
        torusTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(0.0f, 1.0f, 0.0f), 25.0f));//旋转
        torusTransform->setTranslation(QVector3D(0.0f, 0.0f, 1.0f));
    
        Qt3DExtras::QPhongMaterial *torusMaterial = new Qt3DExtras::QPhongMaterial();
        torusMaterial->setDiffuse(QColor(QRgb(0x55aaff)));//漫反射颜色
        
        Qt3DCore::QEntity *m_torusEntity = new Qt3DCore::QEntity(rootEntity);
        m_torusEntity->addComponent(m_torus);
        m_torusEntity->addComponent(torusMaterial);
        m_torusEntity->addComponent(torusTransform);
    
        widget->show();
        widget->resize(500, 500);
    
        return app.exec();
    }

# 2.画3D的圆锥体 #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2pvbGluNjc4_size_16_color_FFFFFF_t_70 1][]

#include <QtCore/QObject>
    #include <QGuiApplication>
    
    #include <Qt3DRender/qcamera.h>
    #include <Qt3DCore/qentity.h>
    #include <Qt3DRender/qcameralens.h>
    
    #include <QtWidgets/QApplication>
    #include <QtWidgets/QWidget>
    #include <QtWidgets/QHBoxLayout>
    #include <QtWidgets/QCheckBox>
    #include <QtWidgets/QCommandLinkButton>
    #include <QtGui/QScreen>
    
    #include <Qt3DInput/QInputAspect>
    
    #include <Qt3DExtras/qtorusmesh.h>
    #include <Qt3DRender/qmesh.h>
    #include <Qt3DRender/qtechnique.h>
    #include <Qt3DRender/qmaterial.h>
    #include <Qt3DRender/qeffect.h>
    #include <Qt3DRender/qtexture.h>
    #include <Qt3DRender/qrenderpass.h>
    #include <Qt3DRender/qsceneloader.h>
    #include <Qt3DRender/qpointlight.h>
    
    #include <Qt3DCore/qtransform.h>
    #include <Qt3DCore/qaspectengine.h>
    
    #include <Qt3DRender/qrenderaspect.h>
    #include <Qt3DExtras/qforwardrenderer.h>
    
    #include <Qt3DExtras/qt3dwindow.h>
    #include <Qt3DExtras/qfirstpersoncameracontroller.h>
    #include <Qt3DExtras/QPhongMaterial>
    
    #include <Qt3DExtras/QConeMesh>
    
    int main(int argc, char **argv)
    {
        QApplication app(argc, argv);
        Qt3DExtras::Qt3DWindow *view = new Qt3DExtras::Qt3DWindow();
        view->defaultFrameGraph()->setClearColor(QColor(QRgb(0xFFFFFF)));//设置视图背景色
        QWidget *widget = QWidget::createWindowContainer(view);
        QSize screenSize = view->screen()->size();
        widget->setMinimumSize(QSize(200, 100));
        widget->setMaximumSize(screenSize);
        widget->setWindowTitle(QStringLiteral("Basic shapes"));
    
        // 根实体
        Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();
        view->setRootEntity(rootEntity);
    
        Qt3DInput::QInputAspect *input = new Qt3DInput::QInputAspect;
        view->registerAspect(input);
    
        // 相机
        Qt3DRender::QCamera *cameraEntity = view->camera();
        cameraEntity->lens()->setPerspectiveProjection(45.0f, 16.0f / 9.0f, 0.1f, 1000.0f);
        cameraEntity->setPosition(QVector3D(0, 0, 20.0f));
        cameraEntity->setUpVector(QVector3D(0, 1, 0));
        cameraEntity->setViewCenter(QVector3D(0, 0, 0));
    
        //高光控制
        Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(rootEntity);
        Qt3DRender::QPointLight *light = new Qt3DRender::QPointLight(lightEntity);
        light->setColor("white");
        light->setIntensity(1);
        lightEntity->addComponent(light);
        Qt3DCore::QTransform *lightTransform = new Qt3DCore::QTransform(lightEntity);
        lightTransform->setTranslation(cameraEntity->position());
        lightEntity->addComponent(lightTransform);
    
        // 相机控制
        Qt3DExtras::QFirstPersonCameraController *camController = new Qt3DExtras::QFirstPersonCameraController(rootEntity);
        camController->setCamera(cameraEntity);
    
        
    
        Qt3DCore::QEntity *m_coneEntity = new Qt3DCore::QEntity(rootEntity);
    
        // 圆锥形数据
        Qt3DExtras::QConeMesh *cone = new Qt3DExtras::QConeMesh();
        cone->setTopRadius(0.5);
        cone->setBottomRadius(1);
        cone->setLength(3);
        cone->setRings(50);
        cone->setSlices(20);
    
        // 圆锥网格变换
        Qt3DCore::QTransform *coneTransform = new Qt3DCore::QTransform();
        coneTransform->setScale(1.5f);
        coneTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(1.0f, 0.0f, 0.0f), 45.0f));
        coneTransform->setTranslation(QVector3D(0.0f, 4.0f, -1.5));
    
        Qt3DExtras::QPhongMaterial *coneMaterial = new Qt3DExtras::QPhongMaterial();
        coneMaterial->setDiffuse(QColor(QRgb(0x928327)));
    
        // 圆锥
        m_coneEntity = new Qt3DCore::QEntity(rootEntity);
        m_coneEntity->addComponent(cone);
        m_coneEntity->addComponent(coneMaterial);
        m_coneEntity->addComponent(coneTransform);
    
        widget->show();
        widget->resize(500, 500);
    
        return app.exec();
    }

# 3.画3D的圆筒 #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2pvbGluNjc4_size_16_color_FFFFFF_t_70 2][]

#include <QtCore/QObject>
    #include <QGuiApplication>
    
    #include <Qt3DRender/qcamera.h>
    #include <Qt3DCore/qentity.h>
    #include <Qt3DRender/qcameralens.h>
    
    #include <QtWidgets/QApplication>
    #include <QtWidgets/QWidget>
    #include <QtWidgets/QHBoxLayout>
    #include <QtWidgets/QCheckBox>
    #include <QtWidgets/QCommandLinkButton>
    #include <QtGui/QScreen>
    
    #include <Qt3DInput/QInputAspect>
    
    #include <Qt3DExtras/qtorusmesh.h>
    #include <Qt3DRender/qmesh.h>
    #include <Qt3DRender/qtechnique.h>
    #include <Qt3DRender/qmaterial.h>
    #include <Qt3DRender/qeffect.h>
    #include <Qt3DRender/qtexture.h>
    #include <Qt3DRender/qrenderpass.h>
    #include <Qt3DRender/qsceneloader.h>
    #include <Qt3DRender/qpointlight.h>
    
    #include <Qt3DCore/qtransform.h>
    #include <Qt3DCore/qaspectengine.h>
    
    #include <Qt3DRender/qrenderaspect.h>
    #include <Qt3DExtras/qforwardrenderer.h>
    
    #include <Qt3DExtras/qt3dwindow.h>
    #include <Qt3DExtras/qfirstpersoncameracontroller.h>
    #include <Qt3DExtras/QPhongMaterial>
    
    #include <Qt3DExtras/QConeMesh>
    #include <Qt3DExtras/QCylinderMesh>
    #include <Qt3DExtras/QCuboidMesh>
    #include <Qt3DExtras/QPlaneMesh>
    #include <Qt3DExtras/QSphereMesh>
    
    int main(int argc, char **argv)
    {
        QApplication app(argc, argv);
        Qt3DExtras::Qt3DWindow *view = new Qt3DExtras::Qt3DWindow();
        view->defaultFrameGraph()->setClearColor(QColor(QRgb(0xFFFFFF)));//设置视图背景色
        QWidget *widget = QWidget::createWindowContainer(view);
        QSize screenSize = view->screen()->size();
        widget->setMinimumSize(QSize(200, 100));
        widget->setMaximumSize(screenSize);
        widget->setWindowTitle(QStringLiteral("Basic shapes"));
    
        // 根实体
        Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();
        view->setRootEntity(rootEntity);
    
        Qt3DInput::QInputAspect *input = new Qt3DInput::QInputAspect;
        view->registerAspect(input);
    
        // 相机
        Qt3DRender::QCamera *cameraEntity = view->camera();
        cameraEntity->lens()->setPerspectiveProjection(45.0f, 16.0f / 9.0f, 0.1f, 1000.0f);
        cameraEntity->setPosition(QVector3D(0, 0, 20.0f));
        cameraEntity->setUpVector(QVector3D(0, 1, 0));
        cameraEntity->setViewCenter(QVector3D(0, 0, 0));
    
        //高光控制
        Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(rootEntity);
        Qt3DRender::QPointLight *light = new Qt3DRender::QPointLight(lightEntity);
        light->setColor("white");
        light->setIntensity(1);
        lightEntity->addComponent(light);
        Qt3DCore::QTransform *lightTransform = new Qt3DCore::QTransform(lightEntity);
        lightTransform->setTranslation(cameraEntity->position());
        lightEntity->addComponent(lightTransform);
    
        // 相机控制
        Qt3DExtras::QFirstPersonCameraController *camController = new Qt3DExtras::QFirstPersonCameraController(rootEntity);
        camController->setCamera(cameraEntity);
    
    
        // 圆筒形数据
        Qt3DExtras::QCylinderMesh *cylinder = new Qt3DExtras::QCylinderMesh();
        cylinder->setRadius(1);
        cylinder->setLength(3);
        cylinder->setRings(100);
        cylinder->setSlices(20);
    
        // 圆筒形网格变换
        Qt3DCore::QTransform *cylinderTransform = new Qt3DCore::QTransform();
        cylinderTransform->setScale(1.5f);
        cylinderTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(1.0f, 0.0f, 0.0f), 45.0f));
        cylinderTransform->setTranslation(QVector3D(-5.0f, 4.0f, -1.5));
    
        Qt3DExtras::QPhongMaterial *cylinderMaterial = new Qt3DExtras::QPhongMaterial();
        cylinderMaterial->setDiffuse(QColor(QRgb(0x928327)));
    
        // 圆筒
        Qt3DCore::QEntity *m_cylinderEntity = new Qt3DCore::QEntity(rootEntity);
        m_cylinderEntity->addComponent(cylinder);
        m_cylinderEntity->addComponent(cylinderMaterial);
        m_cylinderEntity->addComponent(cylinderTransform);
    
        widget->show();
        widget->resize(500, 500);
    
        return app.exec();
    }

# 4.画3D的立体 #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2pvbGluNjc4_size_16_color_FFFFFF_t_70 3][]

#include <QtCore/QObject>
    #include <QGuiApplication>
    
    #include <Qt3DRender/qcamera.h>
    #include <Qt3DCore/qentity.h>
    #include <Qt3DRender/qcameralens.h>
    
    #include <QtWidgets/QApplication>
    #include <QtWidgets/QWidget>
    #include <QtWidgets/QHBoxLayout>
    #include <QtWidgets/QCheckBox>
    #include <QtWidgets/QCommandLinkButton>
    #include <QtGui/QScreen>
    
    #include <Qt3DInput/QInputAspect>
    
    #include <Qt3DExtras/qtorusmesh.h>
    #include <Qt3DRender/qmesh.h>
    #include <Qt3DRender/qtechnique.h>
    #include <Qt3DRender/qmaterial.h>
    #include <Qt3DRender/qeffect.h>
    #include <Qt3DRender/qtexture.h>
    #include <Qt3DRender/qrenderpass.h>
    #include <Qt3DRender/qsceneloader.h>
    #include <Qt3DRender/qpointlight.h>
    
    #include <Qt3DCore/qtransform.h>
    #include <Qt3DCore/qaspectengine.h>
    
    #include <Qt3DRender/qrenderaspect.h>
    #include <Qt3DExtras/qforwardrenderer.h>
    
    #include <Qt3DExtras/qt3dwindow.h>
    #include <Qt3DExtras/qfirstpersoncameracontroller.h>
    #include <Qt3DExtras/QPhongMaterial>
    
    #include <Qt3DExtras/QConeMesh>
    #include <Qt3DExtras/QCylinderMesh>
    #include <Qt3DExtras/QCuboidMesh>
    #include <Qt3DExtras/QPlaneMesh>
    #include <Qt3DExtras/QSphereMesh>
    
    int main(int argc, char **argv)
    {
        QApplication app(argc, argv);
        Qt3DExtras::Qt3DWindow *view = new Qt3DExtras::Qt3DWindow();
        view->defaultFrameGraph()->setClearColor(QColor(QRgb(0xFFFFFF)));//设置视图背景色
        QWidget *widget = QWidget::createWindowContainer(view);
        QSize screenSize = view->screen()->size();
        widget->setMinimumSize(QSize(200, 100));
        widget->setMaximumSize(screenSize);
        widget->setWindowTitle(QStringLiteral("Basic shapes"));
    
        // 根实体
        Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();
        view->setRootEntity(rootEntity);
    
        Qt3DInput::QInputAspect *input = new Qt3DInput::QInputAspect;
        view->registerAspect(input);
    
        // 相机
        Qt3DRender::QCamera *cameraEntity = view->camera();
        cameraEntity->lens()->setPerspectiveProjection(45.0f, 16.0f / 9.0f, 0.1f, 1000.0f);
        cameraEntity->setPosition(QVector3D(0, 0, 20.0f));
        cameraEntity->setUpVector(QVector3D(0, 1, 0));
        cameraEntity->setViewCenter(QVector3D(0, 0, 0));
    
        //高光控制
        Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(rootEntity);
        Qt3DRender::QPointLight *light = new Qt3DRender::QPointLight(lightEntity);
        light->setColor("white");
        light->setIntensity(1);
        lightEntity->addComponent(light);
        Qt3DCore::QTransform *lightTransform = new Qt3DCore::QTransform(lightEntity);
        lightTransform->setTranslation(cameraEntity->position());
        lightEntity->addComponent(lightTransform);
    
        // 相机控制
        Qt3DExtras::QFirstPersonCameraController *camController = new Qt3DExtras::QFirstPersonCameraController(rootEntity);
        camController->setCamera(cameraEntity);
    
    
        // 立方体数据
        Qt3DExtras::QCuboidMesh *cuboid = new Qt3DExtras::QCuboidMesh();
    
        // 立方体网格变换
        Qt3DCore::QTransform *cuboidTransform = new Qt3DCore::QTransform();
        cuboidTransform->setScale(4.0f);
        cuboidTransform->setTranslation(QVector3D(5.0f, -4.0f, 0.0f));
    
        Qt3DExtras::QPhongMaterial *cuboidMaterial = new Qt3DExtras::QPhongMaterial();
        cuboidMaterial->setDiffuse(QColor(QRgb(0x665423)));
    
        //立方体
        Qt3DCore::QEntity *m_cuboidEntity = new Qt3DCore::QEntity(rootEntity);
        m_cuboidEntity->addComponent(cuboid);
        m_cuboidEntity->addComponent(cuboidMaterial);
        m_cuboidEntity->addComponent(cuboidTransform);
    
        widget->show();
        widget->resize(500, 500);
    
        return app.exec();
    }

# 5.画3D的平面 #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2pvbGluNjc4_size_16_color_FFFFFF_t_70 4][]

#include <QtCore/QObject>
    #include <QGuiApplication>
    
    #include <Qt3DRender/qcamera.h>
    #include <Qt3DCore/qentity.h>
    #include <Qt3DRender/qcameralens.h>
    
    #include <QtWidgets/QApplication>
    #include <QtWidgets/QWidget>
    #include <QtWidgets/QHBoxLayout>
    #include <QtWidgets/QCheckBox>
    #include <QtWidgets/QCommandLinkButton>
    #include <QtGui/QScreen>
    
    #include <Qt3DInput/QInputAspect>
    
    #include <Qt3DExtras/qtorusmesh.h>
    #include <Qt3DRender/qmesh.h>
    #include <Qt3DRender/qtechnique.h>
    #include <Qt3DRender/qmaterial.h>
    #include <Qt3DRender/qeffect.h>
    #include <Qt3DRender/qtexture.h>
    #include <Qt3DRender/qrenderpass.h>
    #include <Qt3DRender/qsceneloader.h>
    #include <Qt3DRender/qpointlight.h>
    
    #include <Qt3DCore/qtransform.h>
    #include <Qt3DCore/qaspectengine.h>
    
    #include <Qt3DRender/qrenderaspect.h>
    #include <Qt3DExtras/qforwardrenderer.h>
    
    #include <Qt3DExtras/qt3dwindow.h>
    #include <Qt3DExtras/qfirstpersoncameracontroller.h>
    #include <Qt3DExtras/QPhongMaterial>
    
    #include <Qt3DExtras/QConeMesh>
    #include <Qt3DExtras/QCylinderMesh>
    #include <Qt3DExtras/QCuboidMesh>
    #include <Qt3DExtras/QPlaneMesh>
    #include <Qt3DExtras/QSphereMesh>
    
    int main(int argc, char **argv)
    {
        QApplication app(argc, argv);
        Qt3DExtras::Qt3DWindow *view = new Qt3DExtras::Qt3DWindow();
        view->defaultFrameGraph()->setClearColor(QColor(QRgb(0xFFFFFF)));//设置视图背景色
        QWidget *widget = QWidget::createWindowContainer(view);
        QSize screenSize = view->screen()->size();
        widget->setMinimumSize(QSize(200, 100));
        widget->setMaximumSize(screenSize);
        widget->setWindowTitle(QStringLiteral("Basic shapes"));
    
        // 根实体
        Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();
        view->setRootEntity(rootEntity);
    
        Qt3DInput::QInputAspect *input = new Qt3DInput::QInputAspect;
        view->registerAspect(input);
    
        // 相机
        Qt3DRender::QCamera *cameraEntity = view->camera();
        cameraEntity->lens()->setPerspectiveProjection(45.0f, 16.0f / 9.0f, 0.1f, 1000.0f);
        cameraEntity->setPosition(QVector3D(0, 0, 20.0f));
        cameraEntity->setUpVector(QVector3D(0, 1, 0));
        cameraEntity->setViewCenter(QVector3D(0, 0, 0));
    
        //高光控制
        Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(rootEntity);
        Qt3DRender::QPointLight *light = new Qt3DRender::QPointLight(lightEntity);
        light->setColor("white");
        light->setIntensity(1);
        lightEntity->addComponent(light);
        Qt3DCore::QTransform *lightTransform = new Qt3DCore::QTransform(lightEntity);
        lightTransform->setTranslation(cameraEntity->position());
        lightEntity->addComponent(lightTransform);
    
        // 相机控制
        Qt3DExtras::QFirstPersonCameraController *camController = new Qt3DExtras::QFirstPersonCameraController(rootEntity);
        camController->setCamera(cameraEntity);
    
    
        // 平面形状数据
        Qt3DExtras::QPlaneMesh *planeMesh = new Qt3DExtras::QPlaneMesh();
        planeMesh->setWidth(2);
        planeMesh->setHeight(2);
    
        // 平面网格变换
        Qt3DCore::QTransform *planeTransform = new Qt3DCore::QTransform();
        planeTransform->setScale(1.3f);
        planeTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(1.0f, 0.0f, 0.0f), 45.0f));
        planeTransform->setTranslation(QVector3D(0.0f, -4.0f, 0.0f));
    
        Qt3DExtras::QPhongMaterial *planeMaterial = new Qt3DExtras::QPhongMaterial();
        planeMaterial->setDiffuse(QColor(QRgb(0xa69929)));
    
        // 平面
        Qt3DCore::QEntity *m_planeEntity = new Qt3DCore::QEntity(rootEntity);
        m_planeEntity->addComponent(planeMesh);
        m_planeEntity->addComponent(planeMaterial);
        m_planeEntity->addComponent(planeTransform);
    
    
        widget->show();
        widget->resize(500, 500);
    
        return app.exec();
    }

# 6.画3D的球体 #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2pvbGluNjc4_size_16_color_FFFFFF_t_70 5][]

#include <QtCore/QObject>
    #include <QGuiApplication>
    
    #include <Qt3DRender/qcamera.h>
    #include <Qt3DCore/qentity.h>
    #include <Qt3DRender/qcameralens.h>
    
    #include <QtWidgets/QApplication>
    #include <QtWidgets/QWidget>
    #include <QtWidgets/QHBoxLayout>
    #include <QtWidgets/QCheckBox>
    #include <QtWidgets/QCommandLinkButton>
    #include <QtGui/QScreen>
    
    #include <Qt3DInput/QInputAspect>
    
    #include <Qt3DExtras/qtorusmesh.h>
    #include <Qt3DRender/qmesh.h>
    #include <Qt3DRender/qtechnique.h>
    #include <Qt3DRender/qmaterial.h>
    #include <Qt3DRender/qeffect.h>
    #include <Qt3DRender/qtexture.h>
    #include <Qt3DRender/qrenderpass.h>
    #include <Qt3DRender/qsceneloader.h>
    #include <Qt3DRender/qpointlight.h>
    
    #include <Qt3DCore/qtransform.h>
    #include <Qt3DCore/qaspectengine.h>
    
    #include <Qt3DRender/qrenderaspect.h>
    #include <Qt3DExtras/qforwardrenderer.h>
    
    #include <Qt3DExtras/qt3dwindow.h>
    #include <Qt3DExtras/qfirstpersoncameracontroller.h>
    #include <Qt3DExtras/QPhongMaterial>
    
    #include <Qt3DExtras/QConeMesh>
    #include <Qt3DExtras/QCylinderMesh>
    #include <Qt3DExtras/QCuboidMesh>
    #include <Qt3DExtras/QPlaneMesh>
    #include <Qt3DExtras/QSphereMesh>
    
    int main(int argc, char **argv)
    {
        QApplication app(argc, argv);
        Qt3DExtras::Qt3DWindow *view = new Qt3DExtras::Qt3DWindow();
        view->defaultFrameGraph()->setClearColor(QColor(QRgb(0xFFFFFF)));//设置视图背景色
        QWidget *widget = QWidget::createWindowContainer(view);
        QSize screenSize = view->screen()->size();
        widget->setMinimumSize(QSize(200, 100));
        widget->setMaximumSize(screenSize);
        widget->setWindowTitle(QStringLiteral("Basic shapes"));
    
        // 根实体
        Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();
        view->setRootEntity(rootEntity);
    
        Qt3DInput::QInputAspect *input = new Qt3DInput::QInputAspect;
        view->registerAspect(input);
    
        // 相机
        Qt3DRender::QCamera *cameraEntity = view->camera();
        cameraEntity->lens()->setPerspectiveProjection(45.0f, 16.0f / 9.0f, 0.1f, 1000.0f);
        cameraEntity->setPosition(QVector3D(0, 0, 20.0f));
        cameraEntity->setUpVector(QVector3D(0, 1, 0));
        cameraEntity->setViewCenter(QVector3D(0, 0, 0));
    
        //高光控制
        Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(rootEntity);
        Qt3DRender::QPointLight *light = new Qt3DRender::QPointLight(lightEntity);
        light->setColor("white");
        light->setIntensity(1);
        lightEntity->addComponent(light);
        Qt3DCore::QTransform *lightTransform = new Qt3DCore::QTransform(lightEntity);
        lightTransform->setTranslation(cameraEntity->position());
        lightEntity->addComponent(lightTransform);
    
        // 相机控制
        Qt3DExtras::QFirstPersonCameraController *camController = new Qt3DExtras::QFirstPersonCameraController(rootEntity);
        camController->setCamera(cameraEntity);
    
        
    
        // 球体形状数据
        Qt3DExtras::QSphereMesh *sphereMesh = new Qt3DExtras::QSphereMesh();
        sphereMesh->setRings(20);
        sphereMesh->setSlices(20);
        sphereMesh->setRadius(2);
    
        // 球体网格变换
        Qt3DCore::QTransform *sphereTransform = new Qt3DCore::QTransform();
    
        sphereTransform->setScale(1.3f);
        sphereTransform->setTranslation(QVector3D(-5.0f, -4.0f, 0.0f));
    
        Qt3DExtras::QPhongMaterial *sphereMaterial = new Qt3DExtras::QPhongMaterial();
        sphereMaterial->setDiffuse(QColor(QRgb(0xa69929)));
    
        // 球体
        Qt3DCore::QEntity *m_sphereEntity = new Qt3DCore::QEntity(rootEntity);
        m_sphereEntity->addComponent(sphereMesh);
        m_sphereEntity->addComponent(sphereMaterial);
        m_sphereEntity->addComponent(sphereTransform);
    
    
        widget->show();
        widget->resize(500, 500);
    
        return app.exec();
    }

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