Qt3D 骨骼动画

Question

我正在尝试将 KDAB Qt3D QML 示例https://github.com/KDAB/qt3d-examples/tree/master/animated-skinned-mesh转换为 C++。 我真的很难过，因为文档基本上没有用！

这是我到目前为止编写的程序：

#include <QApplication>

#include <Qt3DCore>
#include <Qt3DRender>
#include <Qt3DExtras>
#include <Qt3DAnimation>
#include <QSkeletonLoader>
#include <QSkeletonMapping>
#include <QDebug>

Qt3DCore::QEntity *createScene()
{
    Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity;

    Qt3DRender::QMesh *mesh = new Qt3DRender::QMesh(rootEntity);
    mesh->setSource(QUrl::fromLocalFile("D:/Robot/robot.gltf"));

    Qt3DExtras::QPhongMaterial *meshMaterial = new Qt3DExtras::QPhongMaterial(rootEntity);
    meshMaterial->setDiffuse(QColor(QRgb(0xa69929)));

    Qt3DCore::QEntity *meshEntity = new Qt3DCore::QEntity(rootEntity);
    Qt3DCore::QTransform *meshTransform = new Qt3DCore::QTransform(rootEntity);

    meshEntity->addComponent(mesh);
    meshEntity->addComponent(meshTransform);
    meshEntity->addComponent(meshMaterial);

    auto* animator = new Qt3DAnimation::QClipAnimator(meshEntity);
    auto* clip = new Qt3DAnimation::QAnimationClipLoader(QUrl::fromLocalFile("D:/Robot/robot.gltf"), animator);
    animator->setClip(clip);

    Qt3DCore::QSkeletonLoader* skeletonLoader = new Qt3DCore::QSkeletonLoader(meshEntity);
    skeletonLoader->setSource(QUrl::fromLocalFile("D:/Robot/robot.gltf"));
    skeletonLoader->setCreateJointsEnabled(true);

    Qt3DCore::QArmature *meshArmature = new Qt3DCore::QArmature;
    meshArmature->setSkeleton(skeletonLoader);
    meshEntity->addComponent(meshArmature);

    Qt3DAnimation::QSkeletonMapping* skeletonMapping = new Qt3DAnimation::QSkeletonMapping(meshEntity);
    skeletonMapping->setSkeleton(skeletonLoader);

    Qt3DAnimation::QChannelMapper *m_channelMapper = new Qt3DAnimation::QChannelMapper;
    m_channelMapper->addMapping(skeletonMapping);

    animator->setLoopCount(Qt3DAnimation::QAbstractClipAnimator::Infinite);
    animator->setChannelMapper(m_channelMapper);

    animator->setRunning(true);
    return rootEntity;
}

int main(int argc, char* argv[])
{
    QGuiApplication app(argc, argv);
    Qt3DExtras::Qt3DWindow view;

    Qt3DCore::QEntity *scene = createScene();

    Qt3DRender::QCamera *camera = view.camera();
    camera->lens()->setPerspectiveProjection(45.0f, 16.0f/9.0f, 0.1f, 1000.0f);
    camera->setPosition(QVector3D(0, 0, 40.0f));
    camera->setViewCenter(QVector3D(0, 0, 0));

    Qt3DExtras::QOrbitCameraController *camController = new Qt3DExtras::QOrbitCameraController(scene);
    camController->setLinearSpeed( 50.0f );
    camController->setLookSpeed( 180.0f );
    camController->setCamera(camera);

    Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(scene);
    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(camera->position());
    lightEntity->addComponent(lightTransform);

    Qt3DCore::QEntity *lightEntity2 = new Qt3DCore::QEntity(scene);
    Qt3DRender::QPointLight *light2 = new Qt3DRender::QPointLight(lightEntity2);
    light2->setColor("yellow");
    light2->setIntensity(1);
    lightEntity2->addComponent(light2);
    Qt3DCore::QTransform *lightTransform2 = new Qt3DCore::QTransform(lightEntity2);
    lightTransform2->setTranslation(QVector3D(5.0f, 5.0f, -3.0f));
    lightEntity2->addComponent(lightTransform2);

    view.setRootEntity(scene);
    view.defaultFrameGraph()->setClearColor(QColor(QRgb(0x4d4d4f)));
    view.registerAspect(new Qt3DAnimation::QAnimationAspect());
    view.show();

    return app.exec();
}

它没有抛出任何运行时错误，并显示机器人网格但它没有动画！ 网格渲染时手臂张开，对我来说，看起来骨架没有应用于网格，但我不知道我可能做错了什么.....顺便说一句，QML 示例正在运行。 有没有人看到可能导致问题的原始 QML 的差异？

编辑：文件robot.gltf 是示例中的原始文件！

Answer 1

您没有使用 addComponent 将动画师添加到 meshEntity