/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
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**
** $QT_BEGIN_LICENSE:LGPL3$
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** accordance with the commercial license agreement provided with the
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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** 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
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** $QT_END_LICENSE$
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****************************************************************************/

#ifndef QT3DCORE_QRAY3D_H
#define QT3DCORE_QRAY3D_H

#include <Qt3DCore/qt3dcore_global.h>
#include <QtGui/qvector3d.h>
#include <QtGui/qmatrix4x4.h>

QT_BEGIN_NAMESPACE

namespace Qt3DCore {

class QT3DCORESHARED_EXPORT QRay3D
{
public:
    QRay3D();
    explicit QRay3D(const QVector3D &origin, const QVector3D &direction = QVector3D(0.0f, 0.0f, 1.0f));
    ~QRay3D();

    QVector3D origin() const;
    void setOrigin(const QVector3D &value);

    QVector3D direction() const;
    void setDirection(const QVector3D &value);

    bool contains(const QVector3D &point) const;
    bool contains(const QRay3D &ray) const;

    QVector3D point(float t) const;
    float projectedDistance(const QVector3D &point) const;

    QVector3D project(const QVector3D &vector) const;

    float distance(const QVector3D &point) const;

    QRay3D &transform(const QMatrix4x4 &matrix);
    QRay3D transformed(const QMatrix4x4 &matrix) const;

    bool operator==(const QRay3D &other) const;
    bool operator!=(const QRay3D &other) const;

private:
    QVector3D m_origin;
    QVector3D m_direction;
};

#ifndef QT_NO_DEBUG_STREAM
QT3DCORESHARED_EXPORT QDebug operator<<(QDebug dbg, const Qt3DCore::QRay3D &ray);
#endif

#ifndef QT_NO_DATASTREAM
QT3DCORESHARED_EXPORT QDataStream &operator<<(QDataStream &stream, const Qt3DCore::QRay3D &ray);
QT3DCORESHARED_EXPORT QDataStream &operator>>(QDataStream &stream, Qt3DCore::QRay3D &ray);
#endif

} // namespace Qt3DCore

QT_END_NAMESPACE

inline bool qFuzzyCompare(const Qt3DCore::QRay3D &ray1, const Qt3DCore::QRay3D &ray2)
{
    return qFuzzyCompare(ray1.origin(), ray2.origin()) &&
           qFuzzyCompare(ray1.direction(), ray2.direction());
}

Q_DECLARE_METATYPE(Qt3DCore::QRay3D)

#endif // QT3DCORE_QRAY3D_H