Qt 3D 制作动画 导入一个桌子模型, 然后让桌子转起来 请给出完整代码

好的，下面是一个完整的 Qt 3D 项目代码示例，其中包含了导入桌子模型、创建动画、添加动画到实体、渲染场景等完整的代码。

main.cpp

#include <QGuiApplication>
#include <Qt3DCore/QEntity>
#include <Qt3DCore/QTransform>
#include <Qt3DExtras/Qt3DWindow>
#include <Qt3DExtras/QForwardRenderer>
#include <Qt3DExtras/QPhongMaterial>
#include <Qt3DExtras/QDiffuseMapMaterial>
#include <Qt3DExtras/QOrbitCameraController>
#include <Qt3DRender/QCamera>
#include <Qt3DRender/QCameraLens>
#include <Qt3DRender/QMesh>
#include <Qt3DAnimation/QPropertyAnimation>

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    // 创建 Qt 3D 窗口
    Qt3DExtras::Qt3DWindow view;
    view.defaultFrameGraph()->setClearColor(QColor(QRgb(0x4d4d4f)));
    view.resize(1600, 900);

    // 创建场景根实体
    Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();

    // 创建相机实体
    Qt3DRender::QCamera *cameraEntity = view.camera();
    cameraEntity->setProjectionType(Qt3DRender::QCameraLens::PerspectiveProjection);
    cameraEntity->setPosition(QVector3D(0, 0, 10));
    cameraEntity->setViewCenter(QVector3D(0, 0, 0));

    // 创建桌子实体
    Qt3DCore::QEntity *tableEntity = new Qt3DCore::QEntity(rootEntity);

    // 导入桌子模型
    Qt3DRender::QMesh *tableMesh = new Qt3DRender::QMesh(tableEntity);
    tableMesh->setMeshName("Table");
    tableMesh->setSource(QUrl::fromLocalFile("table.obj"));

    // 创建桌子材质
    Qt3DExtras::QDiffuseMapMaterial *tableMaterial = new Qt3DExtras::QDiffuseMapMaterial(tableEntity);
    tableMaterial->setDiffuse(QUrl::fromLocalFile("table_diffuse.jpg"));

    // 将桌子网格和材质添加到桌子实体中
    tableEntity->addComponent(tableMesh);
    tableEntity->addComponent(tableMaterial);

    // 创建桌子旋转动画
    Qt3DAnimation::QPropertyAnimation *animation = new Qt3DAnimation::QPropertyAnimation;
    animation->setTargetObject(tableEntity->transform());
    animation->setPropertyName("rotation");
    animation->setStartValue(QVector3D(0, 0, 0));
    animation->setEndValue(QVector3D(0, 360, 0));
    animation->setDuration(2000);
    animation->setLoopCount(-1); // 循环播放

    // 将动画添加到桌子实体中
    tableEntity->addComponent(animation);

    // 创建相机控制器
    Qt3DExtras::QOrbitCameraController *cameraController = new Qt3DExtras::QOrbitCameraController(rootEntity);
    cameraController->setCamera(cameraEntity);

    // 将场景根实体添加到 3D 窗口中
    view.setRootEntity(rootEntity);

    // 渲染场景
    Qt3DRender::QRenderAspect *renderAspect = view.renderSettings()->renderAspect();
    renderAspect->setViewport(new Qt3DRender::QViewport(view));
    renderAspect->setCamera(cameraEntity);
    renderAspect->setClearColor(QColor(Qt::black));

    // 显示 3D 窗口
    view.show();

    return app.exec();
}

以上代码中，需要将桌子模型和纹理文件放置在与 main.cpp 文件同一目录下，并分别命名为 table.obj 和 table_diffuse.jpg。

希望对您有所帮助！