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// 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 <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"
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