1 files changed, 4 insertions, 0 deletions
diff --git a/src/gui/math3d/qvector3d.h b/src/gui/math3d/qvector3d.h
index 40e9035621..4c25451bab 100644
--- a/src/gui/math3d/qvector3d.h
+++ b/src/gui/math3d/qvector3d.h
@@ -43,6 +43,7 @@ QT_BEGIN_NAMESPACE
 class QMatrix4x4;
 class QVector2D;
 class QVector4D;
+class QRect;
 
 #ifndef QT_NO_VECTOR3D
 
@@ -94,6 +95,9 @@ public:
     static QVector3D normal
         (const QVector3D& v1, const QVector3D& v2, const QVector3D& v3);
 
+    QVector3D project(const QMatrix4x4 &modelView, const QMatrix4x4 &projection, const QRect &viewport) const;
+    QVector3D unproject(const QMatrix4x4 &modelView, const QMatrix4x4 &projection, const QRect &viewport) const;
+
     float distanceToPoint(const QVector3D& point) const;
     float distanceToPlane(const QVector3D& plane, const QVector3D& normal) const;
     float distanceToPlane(const QVector3D& plane1, const QVector3D& plane2, const QVector3D& plane3) const;