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    41 

    42 #ifndef QVECTOR3D_H

    43 #define QVECTOR3D_H

    44 

    45 #include <QtCore/qpoint.h>

    46 #include <QtCore/qmetatype.h>

    47 

    48 QT_BEGIN_HEADER

    49 

    50 QT_BEGIN_NAMESPACE

    51 

    52 QT_MODULE(Gui)

    53 

    54 class QMatrix4x4;

    55 class QVector2D;

    56 class QVector4D;

    57 

    58 #ifndef QT_NO_VECTOR3D

    59 

    60 class Q_GUI_EXPORT QVector3D

    61 {

    62 public:

    63     QVector3D();

    64     QVector3D(qreal xpos, qreal ypos, qreal zpos);

    65     explicit QVector3D(const QPoint& point);

    66     explicit QVector3D(const QPointF& point);

    67 #ifndef QT_NO_VECTOR2D

    68     QVector3D(const QVector2D& vector);

    69     QVector3D(const QVector2D& vector, qreal zpos);

    70 #endif

    71 #ifndef QT_NO_VECTOR4D

    72     explicit QVector3D(const QVector4D& vector);

    73 #endif

    74 

    75     bool isNull() const;

    76 

    77     qreal x() const;

    78     qreal y() const;

    79     qreal z() const;

    80 

    81     void setX(qreal x);

    82     void setY(qreal y);

    83     void setZ(qreal z);

    84 

    85     qreal length() const;

    86     qreal lengthSquared() const;

    87 

    88     QVector3D normalized() const;

    89     void normalize();

    90 

    91     QVector3D &operator+=(const QVector3D &vector);

    92     QVector3D &operator-=(const QVector3D &vector);

    93     QVector3D &operator*=(qreal factor);

    94     QVector3D &operator*=(const QVector3D& vector);

    95     QVector3D &operator/=(qreal divisor);

    96 

    97     static qreal dotProduct(const QVector3D& v1, const QVector3D& v2);

    98     static QVector3D crossProduct(const QVector3D& v1, const QVector3D& v2);

    99     static QVector3D normal(const QVector3D& v1, const QVector3D& v2);

   100     static QVector3D normal

   101         (const QVector3D& v1, const QVector3D& v2, const QVector3D& v3);

   102 

   103     qreal distanceToPlane(const QVector3D& plane, const QVector3D& normal) const;

   104     qreal distanceToPlane(const QVector3D& plane1, const QVector3D& plane2, const QVector3D& plane3) const;

   105     qreal distanceToLine(const QVector3D& point, const QVector3D& direction) const;

   106 

   107     friend inline bool operator==(const QVector3D &v1, const QVector3D &v2);

   108     friend inline bool operator!=(const QVector3D &v1, const QVector3D &v2);

   109     friend inline const QVector3D operator+(const QVector3D &v1, const QVector3D &v2);

   110     friend inline const QVector3D operator-(const QVector3D &v1, const QVector3D &v2);

   111     friend inline const QVector3D operator*(qreal factor, const QVector3D &vector);

   112     friend inline const QVector3D operator*(const QVector3D &vector, qreal factor);

   113     friend const QVector3D operator*(const QVector3D &v1, const QVector3D& v2);

   114     friend inline const QVector3D operator-(const QVector3D &vector);

   115     friend inline const QVector3D operator/(const QVector3D &vector, qreal divisor);

   116 

   117     friend inline bool qFuzzyCompare(const QVector3D& v1, const QVector3D& v2);

   118 

   119 #ifndef QT_NO_VECTOR2D

   120     QVector2D toVector2D() const;

   121 #endif

   122 #ifndef QT_NO_VECTOR4D

   123     QVector4D toVector4D() const;

   124 #endif

   125 

   126     QPoint toPoint() const;

   127     QPointF toPointF() const;

   128 

   129     operator QVariant() const;

   130 

   131 private:

   132     float xp, yp, zp;

   133 

   134     QVector3D(float xpos, float ypos, float zpos, int dummy);

   135 

   136     friend class QVector2D;

   137     friend class QVector4D;

   138 #ifndef QT_NO_MATRIX4X4

   139     friend QVector3D operator*(const QVector3D& vector, const QMatrix4x4& matrix);

   140     friend QVector3D operator*(const QMatrix4x4& matrix, const QVector3D& vector);

   141 #endif

   142 };

   143 

   144 inline QVector3D::QVector3D() : xp(0.0f), yp(0.0f), zp(0.0f) {}

   145 

   146 inline QVector3D::QVector3D(qreal xpos, qreal ypos, qreal zpos) : xp(xpos), yp(ypos), zp(zpos) {}

   147 

   148 inline QVector3D::QVector3D(float xpos, float ypos, float zpos, int) : xp(xpos), yp(ypos), zp(zpos) {}

   149 

   150 inline QVector3D::QVector3D(const QPoint& point) : xp(point.x()), yp(point.y()), zp(0.0f) {}

   151 

   152 inline QVector3D::QVector3D(const QPointF& point) : xp(point.x()), yp(point.y()), zp(0.0f) {}

   153 

   154 inline bool QVector3D::isNull() const

   155 {

   156     return qIsNull(xp) && qIsNull(yp) && qIsNull(zp);

   157 }

   158 

   159 inline qreal QVector3D::x() const { return qreal(xp); }

   160 inline qreal QVector3D::y() const { return qreal(yp); }

   161 inline qreal QVector3D::z() const { return qreal(zp); }

   162 

   163 inline void QVector3D::setX(qreal aX) { xp = aX; }

   164 inline void QVector3D::setY(qreal aY) { yp = aY; }

   165 inline void QVector3D::setZ(qreal aZ) { zp = aZ; }

   166 

   167 inline QVector3D &QVector3D::operator+=(const QVector3D &vector)

   168 {

   169     xp += vector.xp;

   170     yp += vector.yp;

   171     zp += vector.zp;

   172     return *this;

   173 }

   174 

   175 inline QVector3D &QVector3D::operator-=(const QVector3D &vector)

   176 {

   177     xp -= vector.xp;

   178     yp -= vector.yp;

   179     zp -= vector.zp;

   180     return *this;

   181 }

   182 

   183 inline QVector3D &QVector3D::operator*=(qreal factor)

   184 {

   185     xp *= factor;

   186     yp *= factor;

   187     zp *= factor;

   188     return *this;

   189 }

   190 

   191 inline QVector3D &QVector3D::operator*=(const QVector3D& vector)

   192 {

   193     xp *= vector.xp;

   194     yp *= vector.yp;

   195     zp *= vector.zp;

   196     return *this;

   197 }

   198 

   199 inline QVector3D &QVector3D::operator/=(qreal divisor)

   200 {

   201     xp /= divisor;

   202     yp /= divisor;

   203     zp /= divisor;

   204     return *this;

   205 }

   206 

   207 inline bool operator==(const QVector3D &v1, const QVector3D &v2)

   208 {

   209     return v1.xp == v2.xp && v1.yp == v2.yp && v1.zp == v2.zp;

   210 }

   211 

   212 inline bool operator!=(const QVector3D &v1, const QVector3D &v2)

   213 {

   214     return v1.xp != v2.xp || v1.yp != v2.yp || v1.zp != v2.zp;

   215 }

   216 

   217 inline const QVector3D operator+(const QVector3D &v1, const QVector3D &v2)

   218 {

   219     return QVector3D(v1.xp + v2.xp, v1.yp + v2.yp, v1.zp + v2.zp, 1);

   220 }

   221 

   222 inline const QVector3D operator-(const QVector3D &v1, const QVector3D &v2)

   223 {

   224     return QVector3D(v1.xp - v2.xp, v1.yp - v2.yp, v1.zp - v2.zp, 1);

   225 }

   226 

   227 inline const QVector3D operator*(qreal factor, const QVector3D &vector)

   228 {

   229     return QVector3D(vector.xp * factor, vector.yp * factor, vector.zp * factor, 1);

   230 }

   231 

   232 inline const QVector3D operator*(const QVector3D &vector, qreal factor)

   233 {

   234     return QVector3D(vector.xp * factor, vector.yp * factor, vector.zp * factor, 1);

   235 }

   236 

   237 inline const QVector3D operator*(const QVector3D &v1, const QVector3D& v2)

   238 {

   239     return QVector3D(v1.xp * v2.xp, v1.yp * v2.yp, v1.zp * v2.zp, 1);

   240 }

   241 

   242 inline const QVector3D operator-(const QVector3D &vector)

   243 {

   244     return QVector3D(-vector.xp, -vector.yp, -vector.zp, 1);

   245 }

   246 

   247 inline const QVector3D operator/(const QVector3D &vector, qreal divisor)

   248 {

   249     return QVector3D(vector.xp / divisor, vector.yp / divisor, vector.zp / divisor, 1);

   250 }

   251 

   252 inline bool qFuzzyCompare(const QVector3D& v1, const QVector3D& v2)

   253 {

   254     return qFuzzyCompare(v1.xp, v2.xp) &&

   255            qFuzzyCompare(v1.yp, v2.yp) &&

   256            qFuzzyCompare(v1.zp, v2.zp);

   257 }

   258 

   259 inline QPoint QVector3D::toPoint() const

   260 {

   261     return QPoint(qRound(xp), qRound(yp));

   262 }

   263 

   264 inline QPointF QVector3D::toPointF() const

   265 {

   266     return QPointF(qreal(xp), qreal(yp));

   267 }

   268 

   269 #ifndef QT_NO_DEBUG_STREAM

   270 Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QVector3D &vector);

   271 #endif

   272 

   273 #ifndef QT_NO_DATASTREAM

   274 Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QVector3D &);

   275 Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QVector3D &);

   276 #endif

   277 

   278 #endif

   279 

   280 QT_END_NAMESPACE

   281 

   282 QT_END_HEADER

   283 

   284 #endif