+//================================================================================
+/*!
+ * \brief Return true if the algorithm can mesh this shape
+ * \param [in] aShape - shape to check
+ * \param [in] toCheckAll - if true, this check returns OK if all shapes are OK,
+ * else, returns OK if at least one shape is OK
+ */
+//================================================================================
+
+bool StdMeshers_Projection_3D::IsApplicable(const TopoDS_Shape & aShape, bool toCheckAll)
+{
+ TopExp_Explorer exp0( aShape, TopAbs_SOLID );
+ if ( !exp0.More() ) return false;
+
+ TopTools_IndexedMapOfOrientedShape blockShapes;
+ TopoDS_Vertex v;
+ TopoDS_Shell shell;
+ for ( ; exp0.More(); exp0.Next() )
+ {
+ int nbFoundShells = 0;
+ TopExp_Explorer exp1( exp0.Current(), TopAbs_SHELL );
+ for ( ; exp1.More(); exp1.Next(), ++nbFoundShells )
+ {
+ shell = TopoDS::Shell( exp1.Current() );
+ if ( nbFoundShells == 2 ) break;
+ }
+ if ( nbFoundShells != 1 ) {
+ if ( toCheckAll ) return false;
+ continue;
+ }
+ bool isBlock = SMESH_Block::FindBlockShapes( shell, v, v, blockShapes );
+ if ( toCheckAll && !isBlock ) return false;
+ if ( !toCheckAll && isBlock ) return true;
+ }
+ return toCheckAll;
+}
