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+/****************************************************************************
+**
+** Copyright (C) 2016 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QT3DEXTRAS_QABSTRACTCAMERACONTROLLER_H
+#define QT3DEXTRAS_QABSTRACTCAMERACONTROLLER_H
+
+#include <Qt3DCore/QEntity>
+#include <Qt3DExtras/qt3dextras_global.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3DInput {
+class QKeyboardDevice;
+class QMouseDevice;
+}
+
+namespace Qt3DRender {
+class QCamera;
+}
+
+namespace Qt3DExtras {
+
+class QAbstractCameraControllerPrivate;
+
+class QT3DEXTRASSHARED_EXPORT QAbstractCameraController : public Qt3DCore::QEntity
+{
+    Q_OBJECT
+    Q_PROPERTY(Qt3DRender::QCamera *camera READ camera WRITE setCamera NOTIFY cameraChanged)
+    Q_PROPERTY(float linearSpeed READ linearSpeed WRITE setLinearSpeed NOTIFY linearSpeedChanged)
+    Q_PROPERTY(float lookSpeed READ lookSpeed WRITE setLookSpeed NOTIFY lookSpeedChanged)
+    Q_PROPERTY(float acceleration READ acceleration WRITE setAcceleration NOTIFY accelerationChanged)
+    Q_PROPERTY(float deceleration READ deceleration WRITE setDeceleration NOTIFY decelerationChanged)
+
+public:
+    ~QAbstractCameraController();
+
+    Qt3DRender::QCamera *camera() const;
+    float linearSpeed() const;
+    float lookSpeed() const;
+
+    float acceleration() const;
+    float deceleration() const;
+
+    void setCamera(Qt3DRender::QCamera *camera);
+    void setLinearSpeed(float linearSpeed);
+    void setLookSpeed(float lookSpeed);
+
+    void setAcceleration(float acceleration);
+    void setDeceleration(float deceleration);
+
+Q_SIGNALS:
+    void cameraChanged();
+    void linearSpeedChanged();
+    void lookSpeedChanged();
+
+    void accelerationChanged(float acceleration);
+    void decelerationChanged(float deceleration);
+
+protected:
+    explicit QAbstractCameraController(Qt3DCore::QNode *parent = nullptr);
+    QAbstractCameraController(QAbstractCameraControllerPrivate &dd, Qt3DCore::QNode *parent = nullptr);
+
+    Qt3DInput::QKeyboardDevice *keyboardDevice() const;
+    Qt3DInput::QMouseDevice *mouseDevice() const;
+
+    struct InputState
+    {
+        float rxAxisValue;
+        float ryAxisValue;
+        float txAxisValue;
+        float tyAxisValue;
+        float tzAxisValue;
+
+        bool leftMouseButtonActive;
+        bool middleMouseButtonActive;
+        bool rightMouseButtonActive;
+
+        bool altKeyActive;
+        bool shiftKeyActive;
+    };
+
+private:
+    virtual void moveCamera(const InputState &state, float dt) = 0;
+
+private:
+    Q_DECLARE_PRIVATE(QAbstractCameraController)
+};
+
+}   // Qt3DExtras
+
+QT_END_NAMESPACE
+
+#endif // QT3DEXTRAS_QABSTRACTCAMERACONTROLLER_H