+public:
+
+ SMDS_ElemIteratorPtr nodesIterator() const;
+ SMDS_ElemIteratorPtr edgesIterator() const;
+ SMDS_ElemIteratorPtr facesIterator() const;
+ virtual SMDS_ElemIteratorPtr elementsIterator(SMDSAbs_ElementType type) const;
+
+ // std-like iteration on nodes
+ typedef SMDS_StdIterator< const SMDS_MeshNode*, SMDS_ElemIteratorPtr > iterator;
+ iterator begin_nodes() const { return iterator( nodesIterator() ); }
+ iterator end_nodes() const { return iterator(); }
+
+ virtual int NbNodes() const;
+ virtual int NbEdges() const;
+ virtual int NbFaces() const;
+ int GetID() const;
+
+ ///Return the type of the current element
+ virtual SMDSAbs_ElementType GetType() const = 0;
+ virtual bool IsPoly() const { return false; };
+ virtual bool IsQuadratic() const;
+ //! Return type of entity
+ virtual SMDSAbs_EntityType GetEntityType() const = 0;
+
+ virtual bool IsMediumNode(const SMDS_MeshNode* node) const;
+ virtual int NbCornerNodes() const;
+
+ friend SMDS_EXPORT std::ostream & operator <<(std::ostream & OS, const SMDS_MeshElement *);
+ friend SMDS_EXPORT bool SMDS_MeshElementIDFactory::BindID(int ID,SMDS_MeshElement*elem);
+
+ // ===========================
+ // Access to nodes by index
+ // ===========================
+ /*!
+ * \brief Return node by its index
+ * \param ind - node index
+ * \retval const SMDS_MeshNode* - the node
+ */
+ virtual const SMDS_MeshNode* GetNode(const int ind) const;
+
+ /*!
+ * \brief Return node by its index
+ * \param ind - node index
+ * \retval const SMDS_MeshNode* - the node
+ *
+ * Index is wrapped if it is out of a valid range
+ */
+ const SMDS_MeshNode* GetNodeWrap(const int ind) const { return GetNode( WrappedIndex( ind )); }
+
+ /*!
+ * \brief Return true if index of node is valid (0 <= ind < NbNodes())
+ * \param ind - node index
+ * \retval bool - index check result
+ */
+ virtual bool IsValidIndex(const int ind) const;
+
+ /*!
+ * \brief Return a valid node index, fixing the given one if necessary
+ * \param ind - node index
+ * \retval int - valid node index
+ */
+ int WrappedIndex(const int ind) const {
+ if ( ind < 0 ) return NbNodes() + ind % NbNodes();
+ if ( ind >= NbNodes() ) return ind % NbNodes();
+ return ind;
+ }
+
+ /*!
+ * \brief Check if a node belongs to the element
+ * \param node - the node to check
+ * \retval int - node index within the element, -1 if not found
+ */
+ int GetNodeIndex( const SMDS_MeshNode* node ) const;
+
+protected:
+ SMDS_MeshElement(int ID=-1);
+ virtual void Print(std::ostream & OS) const;
+
+private:
+ int myID;
+};
+
+// ============================================================
+/*!
+ * \brief Comparator of elements by ID for usage in std containers
+ */
+// ============================================================