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**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
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** $QT_BEGIN_LICENSE:LGPL$
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****************************************************************************/
#ifndef QSPHERE3D_H
#define QSPHERE3D_H
#include <Qt3D/qt3dglobal.h>
#include <QtGui/qvector3d.h>
QT_BEGIN_NAMESPACE
class QMatrix4x4;
class QRay3D;
class QBox3D;
class QPlane3D;
class Q_QT3D_EXPORT QSphere3D
{
public:
QSphere3D();
QSphere3D(const QVector3D ¢er, float radius);
QVector3D center() const;
void setCenter(const QVector3D ¢er);
float radius() const;
void setRadius(float radius);
bool contains(const QVector3D &point) const;
bool intersects(const QRay3D &ray) const;
bool intersects(const QSphere3D &sphere) const;
bool intersects(const QBox3D &box) const;
bool intersects(const QPlane3D &plane) const;
bool intersection(const QRay3D &ray, float *minimum_t, float *maximum_t) const;
float intersection(const QRay3D &ray) const;
void transform(const QMatrix4x4 &matrix);
QSphere3D transformed(const QMatrix4x4 &matrix) const;
bool operator==(const QSphere3D &sphere) const;
bool operator!=(const QSphere3D &sphere) const;
private:
QVector3D m_center;
float m_radius;
};
inline QSphere3D::QSphere3D() : m_radius(1.0f) {}
inline QSphere3D::QSphere3D(const QVector3D ¢er_, float radius_)
: m_center(center_), m_radius(radius_) {}
inline QVector3D QSphere3D::center() const
{
return m_center;
}
inline void QSphere3D::setCenter(const QVector3D ¢er_)
{
m_center = center_;
}
inline float QSphere3D::radius() const
{
return m_radius;
}
inline void QSphere3D::setRadius(float radius_)
{
m_radius = radius_;
}
inline bool QSphere3D::contains(const QVector3D &point) const
{
return (point - m_center).lengthSquared() <= (m_radius * m_radius);
}
inline bool QSphere3D::intersects(const QSphere3D &sphere) const
{
float radsum = sphere.radius() + m_radius;
return (sphere.center() - m_center).lengthSquared() <= (radsum * radsum);
}
inline void QSphere3D::transform(const QMatrix4x4 &matrix)
{
*this = transformed(matrix);
}
inline bool QSphere3D::operator==(const QSphere3D &sphere) const
{
return m_center == sphere.m_center && m_radius == sphere.m_radius;
}
inline bool QSphere3D::operator!=(const QSphere3D &sphere) const
{
return m_center != sphere.m_center || m_radius != sphere.m_radius;
}
inline bool qFuzzyCompare(const QSphere3D &sphere1, const QSphere3D &sphere2)
{
return qFuzzyCompare(sphere1.center(), sphere2.center()) &&
qFuzzyCompare(sphere1.radius(), sphere2.radius());
}
#ifndef QT_NO_DEBUG_STREAM
Q_QT3D_EXPORT QDebug operator<<(QDebug dbg, const QSphere3D &sphere);
#endif
#ifndef QT_NO_DATASTREAM
Q_QT3D_EXPORT QDataStream &operator<<(QDataStream &stream, const QSphere3D &sphere);
Q_QT3D_EXPORT QDataStream &operator>>(QDataStream &stream, QSphere3D &sphere);
#endif
QT_END_NAMESPACE
Q_DECLARE_METATYPE(QSphere3D)
#endif
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