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+/****************************************************************************
+**
+** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
+** Copyright (C) 2016 The Qt Company Ltd and/or its subsidiary(-ies).
+** 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef ORBITTRANSFORMCONTROLLER_H
+#define ORBITTRANSFORMCONTROLLER_H
+
+#include <QObject>
+#include <QMatrix4x4>
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3DCore {
+class QTransform;
+}
+
+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);
+
+ void setTarget(Qt3DCore::QTransform *target);
+ Qt3DCore::QTransform *target() const;
+
+ void setRadius(float radius);
+ float radius() const;
+
+ void setAngle(float angle);
+ float angle() const;
+
+signals:
+ void targetChanged();
+ void radiusChanged();
+ void angleChanged();
+
+protected:
+ void updateMatrix();
+
+private:
+ Qt3DCore::QTransform *m_target;
+ QMatrix4x4 m_matrix;
+ float m_radius;
+ float m_angle;
+};
+
+QT_END_NAMESPACE
+
+#endif // ORBITTRANSFORMCONTROLLER_H