/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Data Visualization module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef Q3DCAMERA_H
#define Q3DCAMERA_H

#include <QtDataVisualization/q3dobject.h>

QT_BEGIN_NAMESPACE_DATAVISUALIZATION

class Q3DCameraPrivate;

class QT_DATAVISUALIZATION_EXPORT Q3DCamera : public Q3DObject
{
    Q_OBJECT
    Q_ENUMS(CameraPreset)
    Q_PROPERTY(float xRotation READ xRotation WRITE setXRotation NOTIFY xRotationChanged)
    Q_PROPERTY(float yRotation READ yRotation WRITE setYRotation NOTIFY yRotationChanged)
    Q_PROPERTY(float zoomLevel READ zoomLevel WRITE setZoomLevel NOTIFY zoomLevelChanged)
    Q_PROPERTY(CameraPreset cameraPreset READ cameraPreset WRITE setCameraPreset NOTIFY cameraPresetChanged)
    Q_PROPERTY(bool wrapXRotation READ wrapXRotation WRITE setWrapXRotation NOTIFY wrapXRotationChanged)
    Q_PROPERTY(bool wrapYRotation READ wrapYRotation WRITE setWrapYRotation NOTIFY wrapYRotationChanged)
    Q_PROPERTY(QVector3D target READ target WRITE setTarget NOTIFY targetChanged REVISION 1)
    Q_PROPERTY(float minZoomLevel READ minZoomLevel WRITE setMinZoomLevel NOTIFY minZoomLevelChanged REVISION 1)
    Q_PROPERTY(float maxZoomLevel READ maxZoomLevel WRITE setMaxZoomLevel NOTIFY maxZoomLevelChanged REVISION 1)

public:
    enum CameraPreset {
        CameraPresetNone = -1,
        CameraPresetFrontLow = 0,
        CameraPresetFront,
        CameraPresetFrontHigh,
        CameraPresetLeftLow,
        CameraPresetLeft,
        CameraPresetLeftHigh,
        CameraPresetRightLow,
        CameraPresetRight,
        CameraPresetRightHigh,
        CameraPresetBehindLow,
        CameraPresetBehind,
        CameraPresetBehindHigh,
        CameraPresetIsometricLeft,
        CameraPresetIsometricLeftHigh,
        CameraPresetIsometricRight,
        CameraPresetIsometricRightHigh,
        CameraPresetDirectlyAbove,
        CameraPresetDirectlyAboveCW45,
        CameraPresetDirectlyAboveCCW45,
        CameraPresetFrontBelow,
        CameraPresetLeftBelow,
        CameraPresetRightBelow,
        CameraPresetBehindBelow,
        CameraPresetDirectlyBelow
    };

    explicit Q3DCamera(QObject *parent = Q_NULLPTR);
    virtual ~Q3DCamera();

    float xRotation() const;
    void setXRotation(float rotation);
    float yRotation() const;
    void setYRotation(float rotation);

    bool wrapXRotation() const;
    void setWrapXRotation(bool isEnabled);

    bool wrapYRotation() const;
    void setWrapYRotation(bool isEnabled);

    virtual void copyValuesFrom(const Q3DObject &source);

    CameraPreset cameraPreset() const;
    void setCameraPreset(CameraPreset preset);

    float zoomLevel() const;
    void setZoomLevel(float zoomLevel);
    float minZoomLevel() const;
    void setMinZoomLevel(float zoomLevel);
    float maxZoomLevel() const;
    void setMaxZoomLevel(float zoomLevel);

    void setCameraPosition(float horizontal, float vertical, float zoom = 100.0f);

    QVector3D target() const;
    void setTarget(const QVector3D &target);

Q_SIGNALS:
    void xRotationChanged(float rotation);
    void yRotationChanged(float rotation);
    void zoomLevelChanged(float zoomLevel);
    void cameraPresetChanged(Q3DCamera::CameraPreset preset);
    void wrapXRotationChanged(bool isEnabled);
    void wrapYRotationChanged(bool isEnabled);
    Q_REVISION(1) void targetChanged(const QVector3D &target);
    Q_REVISION(1) void minZoomLevelChanged(float zoomLevel);
    Q_REVISION(1) void maxZoomLevelChanged(float zoomLevel);

private:
    QScopedPointer<Q3DCameraPrivate> d_ptr;

    Q_DISABLE_COPY(Q3DCamera)

    friend class Q3DCameraPrivate;
    friend class Q3DScenePrivate;
    friend class Abstract3DRenderer;
    friend class Bars3DRenderer;
    friend class Surface3DRenderer;
    friend class Scatter3DRenderer;
    friend class SelectionPointer;
    friend class Q3DInputHandler;
    friend class QTouch3DInputHandlerPrivate;
};

QT_END_NAMESPACE_DATAVISUALIZATION

#endif