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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 Q3DSSCENEPICKER_H
#define Q3DSSCENEPICKER_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/QObject>
#include <QtCore/QSize>
#include <QtCore/QQueue>
#include <QtCore/QPoint>
#include <Qt3DRender/QRayCaster>
#include "q3dsruntimeglobal_p.h"
QT_BEGIN_NAMESPACE
class Q3DSSceneManager;
class Q3DSGraphObject;
class Q3DSLayerNode;
class Q3DSInputManager;
class Q3DSV_PRIVATE_EXPORT Q3DSScenePicker : public QObject
{
Q_OBJECT
public:
enum PickState {
Unqueued = 0,
Queued,
Triggered,
Ready,
Failed
};
Q3DSScenePicker(Q3DSSceneManager *manager);
~Q3DSScenePicker() override;
QPoint pickPoint() const;
Q3DSLayerNode *pickLayer() const;
bool isHit() const;
void pick(const QPoint &point, Q3DSLayerNode *targetLayer = nullptr);
QVector<Q3DSGraphObject *> objects() const;
QVector<qreal> distances() const;
Q_SIGNAL void ready();
void clearPicks();
void addPick(Q3DSGraphObject *object, qreal distance);
void pickReady();
PickState state() const { return m_pickState; }
void setState(PickState state) { m_pickState = state; }
void reset();
private:
QPoint m_point;
QVector<Q3DSGraphObject *> m_objects;
QVector<qreal> m_distances;
Q3DSLayerNode *m_layer = nullptr;
Q3DSInputManager *m_inputManager = nullptr;
PickState m_pickState = Unqueued;
};
QT_END_NAMESPACE
#endif // Q3DSSCENEPICKER_H
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