+//================================================================================
+/*!
+ * \brief Evaluate curve deflection between two points
+ * \param theCurve - the curve
+ * \param theU1 - the parameter of the first point
+ * \param theU2 - the parameter of the second point
+ * \retval double - deflection value
+ */
+//================================================================================
+
+static double deflection(const GeomAdaptor_Curve & theCurve,
+ double theU1,
+ double theU2)
+{
+ if ( theCurve.GetType() == GeomAbs_Line )
+ return 0;
+ // line between theU1 and theU2
+ gp_Pnt p1 = theCurve.Value( theU1 ), p2 = theCurve.Value( theU2 );
+ gp_Lin segment( p1, gp_Vec( p1, p2 ));
+
+ // evaluate square distance of theCurve from the segment
+ Standard_Real dist2 = 0;
+ const int nbPnt = 7;
+ const double step = ( theU2 - theU1 ) / nbPnt;
+ while (( theU1 += step ) < theU2 )
+ dist2 = Max( dist2, segment.SquareDistance( theCurve.Value( theU1 )));
+
+ return sqrt( dist2 );
+}
+
+//================================================================================
+/*!
+ * \brief Initialize deflection value by the mesh built on the geometry
+ * \param theMesh - the built mesh
+ * \param theShape - the geometry of interest
+ * \retval bool - true if parameter values have been successfully defined
+ */
+//================================================================================
+
+bool StdMeshers_Deflection1D::SetParametersByMesh(const SMESH_Mesh* theMesh,
+ const TopoDS_Shape& theShape)
+{
+ if ( !theMesh || theShape.IsNull() )
+ return false;
+
+ _value = 0.;
+
+ Standard_Real UMin, UMax;
+ TopLoc_Location L;
+
+ int nbEdges = 0;
+ TopTools_IndexedMapOfShape edgeMap;
+ TopExp::MapShapes( theShape, TopAbs_EDGE, edgeMap );
+
+ for ( int iE = 1; iE <= edgeMap.Extent(); ++iE )
+ {
+ const TopoDS_Edge& edge = TopoDS::Edge( edgeMap( iE ));
+ Handle(Geom_Curve) C = BRep_Tool::Curve( edge, L, UMin, UMax );
+ GeomAdaptor_Curve AdaptCurve(C, UMin, UMax);
+ if ( AdaptCurve.GetType() != GeomAbs_Line )
+ {
+ vector< double > params;
+ SMESHDS_Mesh* aMeshDS = const_cast< SMESH_Mesh* >( theMesh )->GetMeshDS();
+ if ( SMESH_Algo::GetNodeParamOnEdge( aMeshDS, edge, params ))
+ {
+ nbEdges++;
+ for ( int i = 1; i < params.size(); ++i )
+ _value = Max( _value, deflection( AdaptCurve, params[ i-1 ], params[ i ]));
+ }
+ }
+ else
+ nbEdges++;
+ }
+ return nbEdges;
+}
+
+//================================================================================
+/*!
+ * \brief Initialize my parameter values by default parameters.
+ * \retval bool - true if parameter values have been successfully defined
+ */
+//================================================================================
+
+bool StdMeshers_Deflection1D::SetParametersByDefaults(const TDefaults& /*dflts*/,
+ const SMESH_Mesh* /*theMesh*/)
+{
+ return false;
+}