main.cpp Example File

simple-cpp/main.cpp
 /****************************************************************************
 **
 ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the Qt3D module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and The Qt Company. For licensing terms
 ** and conditions see https://www.qt.io/terms-conditions. For further
 ** information use the contact form at https://www.qt.io/contact-us.
 **
 ** BSD License Usage
 ** Alternatively, you may use this file under the terms of the BSD license
 ** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of The Qt Company Ltd nor the names of its
 **     contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
 **
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QGuiApplication>

 #include <Qt3DCore/QEntity>
 #include <Qt3DRender/QCamera>
 #include <Qt3DRender/QCameraLens>
 #include <Qt3DCore/QTransform>
 #include <Qt3DCore/QAspectEngine>

 #include <Qt3DInput/QInputAspect>

 #include <Qt3DRender/QRenderAspect>
 #include <Qt3DExtras/QForwardRenderer>
 #include <Qt3DExtras/QPhongMaterial>
 #include <Qt3DExtras/QCylinderMesh>
 #include <Qt3DExtras/QSphereMesh>
 #include <Qt3DExtras/QTorusMesh>

 #include <QPropertyAnimation>

 #include "qt3dwindow.h"
 #include "orbittransformcontroller.h"
 #include "qorbitcameracontroller.h"

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

     // Material
     Qt3DRender::QMaterial *material = new Qt3DExtras::QPhongMaterial(rootEntity);

     // Torus
     Qt3DCore::QEntity *torusEntity = new Qt3DCore::QEntity(rootEntity);
     Qt3DExtras::QTorusMesh *torusMesh = new Qt3DExtras::QTorusMesh;
     torusMesh->setRadius(5);
     torusMesh->setMinorRadius(1);
     torusMesh->setRings(100);
     torusMesh->setSlices(20);

     Qt3DCore::QTransform *torusTransform = new Qt3DCore::QTransform;
     torusTransform->setScale3D(QVector3D(1.5, 1, 0.5));
     torusTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(1, 0, 0), 45.0f));

     torusEntity->addComponent(torusMesh);
     torusEntity->addComponent(torusTransform);
     torusEntity->addComponent(material);

     // Sphere
     Qt3DCore::QEntity *sphereEntity = new Qt3DCore::QEntity(rootEntity);
     Qt3DExtras::QSphereMesh *sphereMesh = new Qt3DExtras::QSphereMesh;
     sphereMesh->setRadius(3);

     Qt3DCore::QTransform *sphereTransform = new Qt3DCore::QTransform;
     OrbitTransformController *controller = new OrbitTransformController(sphereTransform);
     controller->setTarget(sphereTransform);
     controller->setRadius(20.0f);

     QPropertyAnimation *sphereRotateTransformAnimation = new QPropertyAnimation(sphereTransform);
     sphereRotateTransformAnimation->setTargetObject(controller);
     sphereRotateTransformAnimation->setPropertyName("angle");
     sphereRotateTransformAnimation->setStartValue(QVariant::fromValue(0));
     sphereRotateTransformAnimation->setEndValue(QVariant::fromValue(360));
     sphereRotateTransformAnimation->setDuration(10000);
     sphereRotateTransformAnimation->setLoopCount(-1);
     sphereRotateTransformAnimation->start();

     sphereEntity->addComponent(sphereMesh);
     sphereEntity->addComponent(sphereTransform);
     sphereEntity->addComponent(material);

     return rootEntity;
 }

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

     Qt3DCore::QEntity *scene = createScene();

     // Camera
     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));

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

     view.setRootEntity(scene);
     view.show();

     return app.exec();
 }