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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QGuiApplication>
#include <Qt3DCore/QEntity>
#include <Qt3DCore/QCamera>
#include <Qt3DCore/QCameraLens>
#include <Qt3DCore/QTransform>
#include <Qt3DCore/QLookAtTransform>
#include <Qt3DCore/QScaleTransform>
#include <Qt3DCore/QRotateTransform>
#include <Qt3DCore/QTranslateTransform>
#include <Qt3DCore/QAspectEngine>
#include <Qt3DInput/QInputAspect>
#include <Qt3DRender/QRenderAspect>
#include <Qt3DRender/QFrameGraph>
#include <Qt3DRender/QForwardRenderer>
#include <Qt3DRender/QPhongMaterial>
#include <Qt3DRender/QCylinderMesh>
#include <Qt3DRender/QSphereMesh>
#include <Qt3DRender/QTorusMesh>
#include <Qt3DRender/QWindow>
#include <QPropertyAnimation>
class OrbitTransformController : public QObject
{
Q_OBJECT
Q_PROPERTY(Qt3DCore::QTransform* target READ target WRITE setTarget NOTIFY targetChanged)
Q_PROPERTY(float radius READ radius WRITE setRadius NOTIFY radiusChanged)
Q_PROPERTY(float angle READ angle WRITE setAngle NOTIFY angleChanged)
public:
OrbitTransformController(QObject *parent = 0)
: QObject(parent)
, m_target(Q_NULLPTR)
, m_matrix()
, m_radius(1.0f)
, m_angle(0.0f)
{
}
void setTarget(Qt3DCore::QTransform *target)
{
if (m_target != target) {
m_target = target;
emit targetChanged();
}
}
Qt3DCore::QTransform *target() const { return m_target; }
void setRadius(float radius)
{
if (!qFuzzyCompare(radius, m_radius)) {
m_radius = radius;
updateMatrix();
emit radiusChanged();
}
}
float radius() const { return m_radius; }
void setAngle(float angle)
{
if (!qFuzzyCompare(angle, m_angle)) {
m_angle = angle;
updateMatrix();
emit angleChanged();
}
}
float angle() const { return m_angle; }
signals:
void targetChanged();
void radiusChanged();
void angleChanged();
protected:
void updateMatrix()
{
m_matrix.setToIdentity();
m_matrix.rotate(m_angle, QVector3D(0.0f, 1.0f, 0.0f));
m_matrix.translate(m_radius, 0.0f, 0.0f);
m_target->setMatrix(m_matrix);
}
private:
Qt3DCore::QTransform *m_target;
QMatrix4x4 m_matrix;
float m_radius;
float m_angle;
};
int main(int argc, char* argv[])
{
QGuiApplication app(argc, argv);
Qt3DRender::QWindow view;
Qt3DInput::QInputAspect *input = new Qt3DInput::QInputAspect;
view.registerAspect(input);
// Root entity
Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();
// Camera
Qt3DCore::QCamera *cameraEntity = view.defaultCamera();
cameraEntity->lens()->setPerspectiveProjection(45.0f, 16.0f/9.0f, 0.1f, 1000.0f);
cameraEntity->setPosition(QVector3D(0, 0, -40.0f));
cameraEntity->setUpVector(QVector3D(0, 1, 0));
cameraEntity->setViewCenter(QVector3D(0, 0, 0));
input->setCamera(cameraEntity);
// Material
Qt3DRender::QMaterial *material = new Qt3DRender::QPhongMaterial(rootEntity);
// Torus
Qt3DCore::QEntity *torusEntity = new Qt3DCore::QEntity(rootEntity);
Qt3DRender::QTorusMesh *torusMesh = new Qt3DRender::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);
Qt3DRender::QSphereMesh *sphereMesh = new Qt3DRender::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);
view.setRootEntity(rootEntity);
view.show();
return app.exec();
}
#include "main.moc"
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