Revision control
++ // Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #include <QGuiApplication>
++
++ #include <Qt3DRender/qcamera.h>
++ #include <Qt3DRender/qgeometryrenderer.h>
++ #include <Qt3DExtras/qcylindermesh.h>
++ #include <Qt3DExtras/qspheremesh.h>
++ #include <Qt3DExtras/qphongmaterial.h>
++
++ #include <Qt3DCore/qentity.h>
++ #include <Qt3DCore/qtransform.h>
++
++ #include <Qt3DExtras/qt3dwindow.h>
++ #include <Qt3DExtras/qorbitcameracontroller.h>
++
++ #include <QtGui/qquaternion.h>
++
++ #include <QTimer>
++
++ class ComponentSwapper : public QObject
++ {
++ Q_OBJECT
++ public:
++ ComponentSwapper(Qt3DCore::QEntity *entity,
++ Qt3DCore::QComponent *component1,
++ Qt3DCore::QComponent *component2,
++ QObject * parent = nullptr)
++ : QObject(parent)
++ , m_entity(entity)
++ , m_component1(component1)
++ , m_component2(component2)
++ , m_currentComponent(component1)
++ {
++ // Set initial state
++ m_entity->addComponent(m_component1);
++ }
++
++ public slots:
++ void swapComponents()
++ {
++ if (m_currentComponent == m_component1) {
++ m_entity->removeComponent(m_component1);
++ m_entity->addComponent(m_component2);
++ m_currentComponent = m_component2;
++ } else {
++ m_entity->removeComponent(m_component2);
++ m_entity->addComponent(m_component1);
++ m_currentComponent = m_component1;
++ }
++ }
++
++ private:
++ Qt3DCore::QEntity *m_entity;
++ Qt3DCore::QComponent *m_component1;
++ Qt3DCore::QComponent *m_component2;
++ Qt3DCore::QComponent *m_currentComponent;
++ };
++
++
++ int main(int argc, char **argv)
++ {
++ QGuiApplication app(argc, argv);
++ Qt3DExtras::Qt3DWindow view;
++
++ // Root entity
++ Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();
++
++ // Camera
++ Qt3DRender::QCamera *camera = view.camera();
++ camera->setPosition(QVector3D(0, 0, 20.0f));
++ camera->setViewCenter(QVector3D(0, 0, 0));
++
++ // For camera controls
++ Qt3DExtras::QOrbitCameraController *cameraController = new Qt3DExtras::QOrbitCameraController(rootEntity);
++ cameraController->setCamera(camera);
++
++ // Cylinder mesh data
++ Qt3DExtras::QCylinderMesh *cylinderMesh = new Qt3DExtras::QCylinderMesh();
++ cylinderMesh->setRadius(1);
++ cylinderMesh->setLength(3);
++ cylinderMesh->setRings(5);
++ cylinderMesh->setSlices(40);
++
++ // Sphere mesh data
++ Qt3DExtras::QSphereMesh *sphereMesh = new Qt3DExtras::QSphereMesh();
++ sphereMesh->setRings(20);
++ sphereMesh->setSlices(40);
++
++ // Transform for cylinder
++ Qt3DCore::QTransform *transform = new Qt3DCore::QTransform;
++ transform->setScale(1.5f);
++ transform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(1, 0, 0), 45.0f));
++
++ // Material
++ Qt3DExtras::QPhongMaterial *material = new Qt3DExtras::QPhongMaterial(rootEntity);
++ material->setDiffuse(Qt::red);
++
++ // Cylinder
++ Qt3DCore::QEntity *cylinder = new Qt3DCore::QEntity(rootEntity);
++ cylinder->addComponent(transform);
++ cylinder->addComponent(material);
++
++ // Set root object of the scene
++ view.setRootEntity(rootEntity);
++ view.show();
++
++ ComponentSwapper *swapper = new ComponentSwapper(cylinder, cylinderMesh, sphereMesh);
++ QTimer *timer = new QTimer;
++ QObject::connect(timer, SIGNAL(timeout()), swapper, SLOT(swapComponents()));
++ timer->start(2000);
++
++ return app.exec();
++ }
++
++ #include "main.moc"