+ Handle(V3d_View) theView, double& theX, double& theY);
+
+ /// Returns the point of intersection of the two lines, the first is (v0, v1), the second is (v2, v3),
+ /// where vi - {xi,yi}. If the v0 is on the second line, the result is a projection of the v1 to this line
+ /// \param theX0 the horizontal coordinate of 0 point
+ /// \param theY0 the vertical coordinate of 0 point
+ /// \param theX1 the horizontal coordinate of 1 point
+ /// \param theY1 the vertical coordinate of 1 point
+ /// \param theX2 the horizontal coordinate of 2 point
+ /// \param theY2 the vertical coordinate of 2 point
+ /// \param theX3 the horizontal coordinate of 3 point
+ /// \param theY3 the vertical coordinate of 3 point
+ /// \param theX the output horizontal coordinate of the intersection point
+ /// \param theY the outpup vertical coordinate of the intersection point
+ static void IntersectLines(double theX0, double theY0, double theX1, double theY1,
+ double theX2, double theY2, double theX3, double theY3,
+ double& theX, double& theY);
+
+ /// Returns the coordinates of projection of the point to the line
+ /// \param thePointX the projected point horizontal coordinate
+ /// \param thePointY the projected point vertictal coordinate
+ /// \param theX1 the horizontal coordinate of the first line point
+ /// \param theY1 the vertical coordinate of the first line point
+ /// \param theX2 the horizontal coordinate of the second line point
+ /// \param theY2 the vertical coordinate of the second line point
+ static void ProjectPointOnLine(double theX1, double theY1, double theX2, double theY2,
+ double thePointX, double thePointY, double& theX, double& theY);
+
+ /// Returns a feature that is under the mouse point
+ /// \param thePoint a screen point
+ /// \param theView a 3D view
+ /// \param theSketch the sketch feature
+ /// \param theFeatures the list of selected presentations
+ static boost::shared_ptr<ModelAPI_Feature> NearestFeature(QPoint thePoint, Handle_V3d_View theView,
+ boost::shared_ptr<ModelAPI_Feature> theSketch,
+ const std::list<XGUI_ViewerPrs>& theFeatures);
+private:
+ /// Return the distance between the feature and the point
+ /// \param theFeature feature object
+ /// \param theX the horizontal coordinate of the point
+ /// \param theX the vertical coordinate of the point
+ static double DistanceToPoint(boost::shared_ptr<ModelAPI_Feature> theFeature,
+ double theX, double theY);